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Smithsonian / USGS Weekly Volcanic Activity Report

Weekly Volcanic Activity Map

The Weekly Volcanic Activity Report is a cooperative project between the Smithsonian's Global Volcanism Program and the US Geological Survey's Volcano Hazards Program. Updated by 2300 UTC every Wednesday and averaging 16 reported volcanoes, this is not a comprehensive list of all eruptions this week, but rather a summary of activity that meet criteria discussed in the "Criteria and Disclaimers" section below.

Volcanic activity reported here is preliminary and subject to change. Carefully reviewed, detailed narratives over longer time periods are published as reports of the Bulletin of the Global Volcanism Network available through volcano profile pages.

Smithsonian / USGS Weekly Volcanic Activity Report for the week of 1 January-7 January 1920
Name Location Eruption Start Date Report Status
Ahyi Mariana Islands (USA) 2024 Jan 1 Continuing
Ambae Vanuatu Continuing
Anatahan Mariana Islands (USA) Continuing
Bardarbunga Iceland Continuing
Bogoslof Fox Islands (USA) Continuing
Calbuco Southern Chile Continuing
Chaiten Southern Chile Continuing
Dabbahu Ethiopia Continuing
Dieng Volcanic Complex Central Java Continuing
Eyjafjallajokull Iceland Continuing
Fernandina Isla Fernandina (Galapagos) 2024 Mar 2 Continuing
Fogo Cabo Verde Continuing
Fuego South-Central Guatemala 2002 Jan 4 Continuing
Grimsvotn Iceland Continuing
Hierro Canary Islands Continuing
Home Reef Tonga Ridge Continuing
Hunga Tonga-Hunga Ha'apai Tonga Ridge Continuing
Jebel at Tair Yemen Continuing
Kadovar Northeast of New Guinea Continuing
Kambalny Southern Kamchatka (Russia) Continuing
Karangetang Sangihe Islands 2018 Nov 25 Continuing
Karthala Grand Comore Island Continuing
Kelud Eastern Java Continuing
Kilauea Hawaiian Islands (USA) Continuing
Krakatau Sunda Strait Continuing
Krummel-Garbuna-Welcker New Britain (Papua New Guinea) Continuing
Kusatsu-Shiranesan Honshu (Japan) Continuing
Leroboleng Flores Island Continuing
Llaima Central Chile Continuing
Lopevi Vanuatu Continuing
Mayon Luzon (Philippines) 2023 Apr 27 ± 2 days Continuing
Merapi Central Java 2020 Dec 31 Continuing
Momotombo Nicaragua Continuing
Nabro Eritrea Continuing
Nevado del Huila Colombia Continuing
Nyiragongo DR Congo Continuing
Ontakesan Honshu (Japan) Continuing
Puyehue-Cordon Caulle Central Chile Continuing
Rabaul New Britain (Papua New Guinea) Continuing
Sarychev Peak Matua Island (Russia) Continuing
Sinabung Northwestern Sumatra Continuing
Sirung Pantar Island Continuing
Soufriere Hills Montserrat Continuing
St. Helens Washington Continuing
Taal Luzon (Philippines) Continuing
Tengger Caldera Eastern Java Continuing
Tongariro North Island (New Zealand) Continuing
Whakaari/White Island North Island (New Zealand) Continuing
Zhupanovsky Eastern Kamchatka (Russia) Continuing
Zubair Group Yemen Continuing
All times are local unless otherwise stated.
Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 19,934 individual reports over 1,212 weeks (average of 16 per week) on 332 different volcanoes.

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Agung Cuicocha Iliwerung Llaima Popocatepetl Sumbing
Ahyi Cumbal Inielika Lokon-Empung Purace Sundoro
Aira Dabbahu Ioto Lonquimay Puyehue-Cordon Caulle Suretamatai
Akan Davidof Irazu Lopevi Rabaul Suwanosejima
Alaid Dempo Iya Machin Raikoke Taal
Alu-Dalafilla Descabezado Grande Izu-Torishima Makushin Ranakah Tair, Jebel at
Ambae Dieng Volcanic Complex Jackson Segment Maly Semyachik Raoul Island Takawangha
Ambang Dukono Kaba Manam Rasshua Talang
Ambrym East Epi Kadovar Manda Hararo Raung Tambora
Anatahan Ebeko Kaitoku Seamount Marapi Redoubt Tanaga
Aniakchak Ebulobo Kama'ehuakanaloa Maroa Reventador Tandikat-Singgalang
Antillanca Volcanic Complex Edgecumbe Kambalny Martin Reykjanes Tangkoko-Duasudara
Antuco Egon Kanaga Masaya Rincon de la Vieja Tangkuban Parahu
Apoyeque Ekarma Kanlaon Maule, Laguna del Rinjani Tara, Batu
Arenal Eldey Karangetang Mauna Loa Ritter Island Ta'u
Asamayama Erebus Karkar Mayon Rotorua Taupo
Askja Erta Ale Karthala McDonald Islands Ruang Telica
Asosan Etna Karymsky Melebingoy Ruapehu Tenerife
Atka Volcanic Complex Etorofu-Yakeyama [Grozny Group] Kasatochi Melimoyu Ruby Tengger Caldera
Augustine Eyjafjallajokull Katla Merapi Ruiz, Nevado del Three Sisters
Avachinsky Fagradalsfjall Katmai Midagahara Sabancaya Tinakula
Awu Fernandina Kavachi Misti, El Sakar Tofua
Axial Seamount Fogo Kelimutu Miyakejima Salak Tokachidake
Azul, Cerro Fonualei Kelud Momotombo San Cristobal Tolbachik
Azumayama Fournaise, Piton de la Kerinci Monowai San Miguel Toliman
Bagana Fourpeaked Ketoi Montagu Island San Vicente Tongariro
Balbi Fuego Kharimkotan Moyorodake [Medvezhia] Sangay Trident
Bamus Fujisan Kick 'em Jenny Mutnovsky Sangeang Api Tungurahua
Banda Api Fukutoku-Oka-no-Ba Kie Besi Myojinsho Santa Ana Turrialba
Bardarbunga Galeras Kikai Nabro Santa Maria Ubinas
Barren Island Galunggung Kilauea Negra, Sierra Sao Jorge Ugashik-Peulik
Batur Gamalama Kirishimayama Negro, Cerro Sarigan Ukinrek Maars
Bezymianny Gamkonora Kita-Ioto Nightingale Island Sarychev Peak Ulawun
Bogoslof Gareloi Kizimen Nishinoshima Saunders Unnamed
Brava Gaua Klyuchevskoy Nisyros Savo Unnamed
Bristol Island Gorely Kolokol Group Novarupta Semeru Veniaminof
Bulusan Great Sitkin Koryaksky NW Rota-1 Semisopochnoi Villarrica
Calbuco Grimsvotn Krakatau Nyamulagira Seulawah Agam Vulcano
Callaqui Guagua Pichincha Krummel-Garbuna-Welcker Nyiragongo Sheveluch West Mata
Cameroon Guallatiri Krysuvik-Trolladyngja Ofu-Olosega Shishaldin Westdahl
Campi Flegrei del Mar di Sicilia Guntur Kuchinoerabujima Okataina Simbo Whakaari/White Island
Cayambe Hachijojima Kurikomayama Okmok Sinabung Witori
Chachadake [Tiatia] Hakoneyama Kusatsu-Shiranesan Ontakesan Sinarka Wolf
Chaiten Heard Kverkfjoll Oraefajokull Siple Wrangell
Chiginagak Hekla La Palma Osorno Sirung Yakedake
Chikurachki Helgrindur Lamington Pacaya Slamet Yasur
Chiles-Cerro Negro Hierro Lamongan Pagan Snaefellsjokull Yufu-Tsurumi
Chillan, Nevados de Hokkaido-Komagatake Langila Palena Volcanic Group Soputan Zaozan [Zaosan]
Chirinkotan Home Reef Lanin Paluweh Sorikmarapi Zavodovski
Chirpoi Hood Lascar Panarea Sotara Zhupanovsky
Ciremai Huaynaputina Late Papandayan Soufriere Hills Zubair Group
Cleveland Hudson, Cerro Lateiki Pavlof Soufriere St. Vincent
Colima Huila, Nevado del Lengai, Ol Doinyo Pelee South Sarigan Seamount
Colo Hunga Tonga-Hunga Ha'apai Leroboleng Peuet Sague Spurr
Concepcion Ibu Lewotobi Pinatubo St. Helens
Copahue Ijen Lewotolok Planchon-Peteroa Stromboli
Cotopaxi Iliamna Little Sitkin Poas Sulu Range
 News Feeds and Google Placemarks


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The RSS (Really Simple Syndication) feed is identical to the Weekly Volcanic Activity Report minus some features including the header information (latitude and longitude and summit elevation), the Geologic Summary, and a link to the volcano's page from the Global Volcanism Program. At the end of each report is a list of the sources used. Each volcano report includes a link from the volcano's name back to the more complete information in the Weekly Volcanic Activity Report on the Smithsonian website. This feature was first made available on 5 March 2008.



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A Google Earth network link for the Weekly Volcanic Activity Report can be loaded into the free Google Earth software, and in turn will load placemarks for volcanoes in the current weekly report. Placemark balloons include the volcano name, report date, report text, sources, and links back to the GVP volcano profile page and to the complete Weekly Report for that week. This feature was first made available on 1 April 2009.

 Criteria & Disclaimers

Criteria



The Weekly Volcanic Activity Report does not necessarily include all volcanic activity that occurred on Earth during the week. More than a dozen volcanoes globally have displayed more-or-less continuous eruptive activity for decades or longer, and such routine activity is typically not reported here. Moreover, Earth's sea-floor volcanism is seldom reported even though in theory it represents the single most prolific source of erupted material. The Weekly Volcanic Activity Report summarizes volcanic activity that meets one or more of the following criteria:

- A volcano observatory raises or lowers the alert level at the volcano.
- A volcanic ash advisory has been released by a volcanic ash advisory center (VAAC) stating that an ash cloud has been produced from the volcano.
- A verifiable news report of new activity or a change in activity at the volcano has been issued.
- Observers have reported a significant change in volcanic activity. Such activity can include, but is not restricted to, pyroclastic flows, lahars, lava flows, dome collapse, or increased unrest.

Volcanoes are included in the "New Activity/Unrest" section of the Weekly Volcanic Activity Report if the activity occurs after at least 3 months of quiescence. Once a volcano is included in the "New Activity/Unrest" section, updates will remain in that section unless the activity continues for more than 1 month without escalating, after which time updates will be listed in the "Continuing Activity" section. Volcanoes are also included in the "New Activity/Unrest" section if the volcano is undergoing a period of relatively high unrest, or increasing unrest. This is commonly equal to Alert Level Orange on a scale of Green, Yellow, Orange, Red, where Red is the highest alert. Or alert level 3 on a scale of 1-4 or 1-5.

It is important to note that volcanic activity meeting one or more of these criteria may occur during the week, but may not be included in the Weekly Volcanic Activity Report because we did not receive a report.

Disclaimers



1. The Weekly Volcanic Activity Report is intended to provide timely information about global volcanism on a weekly basis. Consequently, the report is generated rapidly by summarizing volcanic reports from various sources, with little time for fact checking. The accuracy of the Weekly Volcanic Activity Report is dependent upon the quality of the volcanic activity reports we receive. Reports published in the Bulletin of the Global Volcanism Network are cover longer time periods and are more carefully reviewed, although all of the volcanoes discussed in the Weekly Volcanic Activity Report are not necessarily reported in the Bulletin. Because of our emphasis on rapid reporting on the web we have avoided diacritical marks. Reports are updated on the Weekly Volcanic Activity Report web page as they are received, therefore information may be included regarding events that occurred before the current report period.

2. Rapidly developing events lead to coverage that is often fragmentary. Volcanoes, their eruptions, and their plumes and associated atmospheric effects are complex phenomena that may require months to years of data analysis in order to create a comprehensive summary and interpretation of events.

3. Preliminary accounts sometimes contain exaggerations and "false alarms," and accordingly, this report may include some events ultimately found to be erroneous or misleading.

4. Many news agencies do not archive the articles they post on the Internet, and therefore the links to some sources may not be active. To obtain information about the cited articles that are no longer available on the Internet contact the source.

5. USGS Disclaimer Statement for this Website:

Information presented on this website is considered public information and may be distributed or copied. Use of appropriate byline/photo/image credit is requested. We strongly recommend that USGS data be acquired directly from a USGS server and not through other sources that may change the data in some way. While USGS makes every effort to provide accurate and complete information, various data such as names, telephone numbers, etc. may change prior to updating. USGS welcomes suggestions on how to improve our home page and correct errors. USGS provides no warranty, expressed or implied, as to the accuracy, reliability or completeness of furnished data.

Some of the documents on this server may contain live references (or pointers) to information created and maintained by other organizations. Please note that USGS does not control and cannot guarantee the relevance, timeliness, or accuracy of these outside materials.

For site security purposes and to ensure that this service remains available to all users, this government computer system employs software programs to monitor network traffic to identify unauthorized attempts to upload or change information, or otherwise cause damage. Unauthorized attempts to upload information or change information on this website are strictly prohibited and may be punishable under the Computer Fraud and Abuse Act of 1986 and the National Information Infrastructure Protection Act. Information may also be used for authorized law enforcement investigations. (Last modified September 21, 1999.)

U.S. Department of the Interior, U.S. Geological Survey, Reston, VA, USA
URL: https://volcano.si.edu/reports_weekly.cfm

 Acronyms and Abbreviations

a.s.l. - above sea level

AVO - Alaska Volcano Observatory

AVHRR - Advanced Very High Resolution Radiometer

CENAPRED - Centro Nacionale de Prevencion de Desastres (México)

CONRED - Coordinadora Nacional para la Reducción de Desastres

COSPEC - Correlation Spectrometer

CVGHM (formerly VSI) - Center of Volcanology and Geological Hazard Mitigation

CVO - Cascades Volcano Observatory (USGS)

GMS - Geostationary Meteorological Satellite

GOES - Geostationary Operational Environmental Satellite

GVO - Goma Volcano Observatory

GVP - Global Volcanism Program (Smithsonian Institution)

HVO - Hawaiian Volcano Observatory (USGS)

ICE - Instituto Costarricense de Electricidad (Costa Rica)

IG - Instituto Geofísico (Ecuador)

IGNS - Institute of Geological and Nuclear Sciences (New Zealand) - now GNS Science

INETER - Instituto Nicaragüense de Estudios Territoriales (Nicaragua)

INGEMMET - Instituto Geológical Minero y Metalúrgico (Peru)

INGEOMINAS - Instituto Colombiano de Geología y Minería (Colombia)

INGV-CT - Istituto Nazionale di Geofisica e Vulcanologia - Sezione di Catania (Italy)

INSIVUMEH - Instituto Nacional de Sismologia, Vulcanologia, Meteorologia e Hidrologia (Guatemala)

IRD - Institut de Recherche pour le Développement (France)

JMA - Japanese Meteorological Agency

KEMSD - Kamchatkan Experimental and Methodical Seismilogical Department

KVERT - Kamchatkan Volcanic Eruption Response Team

M - magnitude

METEOSAT - Meteorological Satellite

MEVO - Mount Erebus Volcano Observatory

MODIS - Moderate Resolution Imaging Spectroradiometer

MVO - Montserrat Volcano Observatory

MWO - Meteorological Watch Office

NEIC - National Earthquake Information Center

NIED - National Research Institute for Earth Science and Disaster Prevention (Japan)

NOAA - National Oceanic and Atmospheric Administration

NOTAM - Notice to Airmen

OVDAS - Observatorio Volcanologico de los Andes del Sur (Chile)

OFDA - Office of US Foreign Disaster Assistance

ONEMI - Oficina Nacional de Emergencia - Ministerio del Interior (Chile)

OVPDLF - Observatoire Volcanologique du Piton de la Fournaise (France)

OVSICORI-UNA - Observatorio Vulcanologico y Sismologico de Costa Rica, Universidad Nacional (Costa Rica)

PHIVOLCS - Philippine Institute of Volcanology and Seismology (Philippines)

RSAM - Real-time Seismic Amplitude Measurement

RVO - Rabaul Volcano Observatory

SERNAGEOMIN - Servicio Nacional de Geologia y Mineria (Chile)

SIGMET - Significant Meteorological Information

SNET - Servicio Nacional de Estudios Territoriales (El Salvador)

SVERT - Sakhalin Volcanic Eruption Response Team (Russia)

USAID - US Agency for International Development

USGS - United States Geological Survey

UTC - Coordinated Universal Time

VAAC - Volcanic Ash Advisory Center

VAFTAD - Volcanic Ash Forecast Transport And Dispersion

VDAP - Volcano Disaster Assistance Program (USGS)

VHP - Volcano Hazards Program (USGS)

VRC - Volcano Research Center (Japan)

Report for Ahyi
Seismic stations on Pagan, Sarigan, Anatahan, and Saipan began recording signals starting at 0635 on 24 April believed to be from an undersea volcanic source. While conducting coral reef research at Farallon de Pajaros, NOAA divers reported hearing loud explosions and feeling the shock waves. One of the more powerful explosions was felt by the crew as it reverberated through the hull of the ship.
Figure (see Caption)
Three-dimensional image of the summit of Ahyi submarine volcano gathered on 4 December 2014 with the mid-water data shown above the new crater created by the April 2014 eruption. Image courtesy of Submarine Ring of Fire 2014 - Ironman, NSF/NOAA.

Source:
Report for Ambae
Lava was first observed on 22 September emerging from a vent at the summit of the pyroclastic cone. Ash plumes and fountaining lava persisted for a few weeks as the pyroclastic cone increased in size. Activity became more intermittent by mid-October, but explosions still produced ash plumes; the highest was reported at 9.1 km altitude. By 4 October about 11,600 people had been evacuated but they began returning home later that month.
Figure (see Caption)
Aerial view of the cone that formed in Lake Voui during September 2017 in the summit caldera of Ambae. Photo taken on 1 October 2017. Courtesy of VMGB.

Source:
Report for Anatahan
On 10 May an eruption began at Anatahan, a volcanic island which has had no historically documented eruptions. Scientists on a small ship about 10 km away saw an ash plume that eventually rose to ~12 km a.s.l. The eruption occurred primarily from Anatahan's eastern crater.
Figure (see Caption)
Photograph taken on 10 May 2003 of an ash cloud produced from the eruption of Anatahan that began that day. The cloud top is at ~ 4.6 km and emanates from the eastern crater. The view is toward the SW. Courtesy of CNMI Emergency Management Office.

Source:
Report for Bardarbunga
GPS stations showed movement upward and away from the volcano since early June 2014. Earthquakes increased on 16 August. By 18 August there had been 2,600 earthquakes detected at the volcano; earthquake locations from N and E swarms had been migrating NE, but in the evening activity of the N swarm had decreased significantly. GPS and seismic data indicated that an intrusive dike had increased from 25 to 40 km in length E, NE, and N of the volcano during the next week. On 29 August a small fissure eruption started in Holuhraun along an old fissure about 600 m in length. A fissure eruption ensued, bringing in spectators from all over the world and producing remarkable photographs and video. A local chef had cooked a fancy dinner on the lava flow for a lucky couple.
Figure (see Caption)
Aerial view Bardarbunga fissure eruptions taken on 4 September 2014. The fissure venting these eruptions is in Holuhraun lava field. Courtesy of Peter Hartree (peter@reykjavikcoworking.is).

Source:
Report for Bogoslof
A powerful, short-lived explosion in December heralded a new eruption and sent ash to over 10.3 km altitude. The eruption would last until the July 2017, and in the meantime produce many eruption plumes as high as 11.6 km a.s.l. and drastically change the shape of the island.
Figure (see Caption)
Bogoslof's eruption plume was captured on 20 December shortly after 1530 AKST from an aircraft at 36,000 feet (10.9 km). Photo by Paul Tuvman, courtesy of AVO.

Source:
Report for Calbuco
An eruption began on 22 April, the first since 1972, prompting a declaration of a 20-km exclusion zone. The eruption was preceded by an hour-long period of volcano-tectonic events followed by long-period events. After a large seismic event, a 90-minute eruption generated a sub-Plinian, gray ash plume that rose 15 km above the main crater and drifted mainly ENE, although fine ash drifted N and NW. Column collapses occurred locally and radially. A larger second event on 23 April lasted six hours, and also generated a sub-Plinian ash plume that rose higher than 15 km and drifted N, NE, and E. Incandescent tephra was ejected as far as 5 km; deposits were concentrated to the N and NE, with thicknesses varying from tens of centimeters to a few millimeters. Pyroclastic flows traveled a maximum distance of 7 km and lahars traveled 15 km. Scientists aboard an overflight observed ash emissions from at least six vents on the W, SW, and S sides of the old lava dome. About 5,000 people had been evacuated. Sulfur dioxide was detected as high as 21 km altitude. Although most ash had fallen out of the plume over Chile and Argentina, some may have remained in the stratospheric plume that within a few days had traveled around the globe. The large plume and favorable weather conditions led to breath-taking photographs of the eruption, especially of lightning strikes within the ash cloud.
Figure (see Caption)
Photograph of the Calbuco explosion on 22 April 2015, taken from Puerto Montt, about 30 km SW of the volcano. Photo by Keraunos ob, posted on the Earth of Fire blog by Bernard Duyck.

Source:
Report for Chaiten
The first historical eruption of Chaitén volcano beginning in 2008 produced major rhyolitic explosive activity and growth of a lava dome that filled much of the caldera. The eruption was initially thought to have been from Minchinmávida. Chaitén began erupting on 2 May, following increased seismicity in the region just the day before. A pulsating white to gray ash plume rose to an estimated altitude greater than 21 km (68,900 ft) a.s.l. and drifted SSE. Residents evacuated Chaitén town (10 km SW); lahars and ashfall rendered the town uninhabitable. On 6 May the eruption became more forceful and generated a wider and darker gray ash plume to an estimated altitude of 30 km (98,400 ft) a.s.l. All remaining people in Chaitén were ordered to evacuate, as well as anyone within 50 km of the volcano.
Figure (see Caption)
Chaitén seen from a helicopter on 26 May with the camera aimed NE. A tephra cone stood atop the new and old dome complex. The cone's steep upper walls discharged a broad plume from an unusually ample summit crater. The plume was two-toned, with distinctively shaded material on its left and right sides. Lumpy areas on the middle to lower cone correspond to the obsidian on the now buried older dome. Some burned vegetation exists in the bottom center of the photo along the outflowing Blanco river. Photo by J.N. Marso (USGS).

Source:
Report for Dabbahu
The first historical eruption took place from a fissure vent on the NE flank in September 2005. A team of scientists visited the Da'Ure locality immediately adjacent to the NE flank of the Quaternary Dabbahu (or Boina) felsic complex on 4 and 5 October after receiving reports of volcanic activity there on 26 September. People in the area noted that on 26 September at about 1300 a very strong earthquake shook the area, and was followed by a dark column of "smoke" that rose high into the atmosphere and spread out to form a cloud, which darkened the area for 3 days and 3 nights. The scientists determined that a minor explosive eruption occurred from two semi-circular vents, producing ashfall that was ~5 cm thick near the vent. Ash deposits extended more than 500 m from the vent. Boulders emitted during the eruption were as large as 3 m and were deposited as far as 20 meters away. More than 6,000 people were evacuated from neighboring villages.
Figure (see Caption)
An aerial view of the fissure vent at Da'Ure (Dabbahu) taken around 4-5 October 2005.

Source:
Report for Dieng Volcanic Complex
A phreatic eruption at the Sileri Crater lake occurred in July, ejecting mud and material 150 m high, and 50 m to the N and S. The event injured 11 of 18 tourists that were near the crater. A helicopter on the way to help evacuated people after the event crashed, killing all eight people (four crewmen and four rescuers) on board.
Figure (see Caption)
A plume rises above Kawah Sileri crater in the Dieng volcanic complex, one of many Dieng craters to have erupted in historical time. Anonymous, 1985.

Source:
Report for Eyjafjallajokull
Although the 1,666-m-high volcano has erupted during historical time, it has been less active than other volcanoes of Iceland's eastern volcanic zone. The eruption began in March 2010 from a flank fissure, but it was the summit eruption in April that brought recent world-wide attention to how ash plumes impact air travel and safety. Although the eruption was not large, it caused major travel disruptions across Europe, significant monetary loss, and spurred more research into the finer details of aircraft and ash-plume encounters.
Figure (see Caption)
An Aqua-MODIS (Moderate Resolution Imaging Spectroradiometer) satellite image of Eyjafjallajökull taken on 17 April 2010. Courtesy of NASA Earth Observatory: image by Jeff Schmaltz, MODIS Rapid Response Team; caption by Holli Riebeek.

Source:
Report for Fernandina
Fernandina, the most active of Galápagos volcanoes and the one closest to the Galápagos mantle plume, is a basaltic shield volcano with a deep 5 x 6.5 km summit caldera. Collapse of a nearly 1 cu km section of the east caldera wall during an eruption in 1988 produced a debris-avalanche deposit that covered much of the caldera floor and absorbed the caldera lake. Fissure eruptions were noted in 2005 and 2009. The satellite image and terrain quality of Galápagos volcanoes in Google Earth is spectacular and produces great virtual fly-throughs of the islands.
Figure (see Caption)
A 2002 International Space Station photograph of Fernandina. Image ISS05E06997 (Visible Earth v1 ID 18002)

Source:
Report for Fogo
I was introduced to this volcano when it began erupting again in 2004 from Pico Cone. Lava, sometimes flowing at a rate of 30 meters per hour, overtook structures and caused the almost 1,500 residents of the caldera to evacuate. By 8 December about 90% of Bangaeira and 95% of Portela were overtaken by the flows which, and as noted by the article, destroyed 100 years of town history.
Figure (see Caption)
The photo is undated but was posted online on 2 December 2014. Courtesy of Boston.com. Photo credit (all photos) to Joao Relvas/EPA.

Source:
Report for Fuego
Frequent vigorous historical eruptions have been recorded since the onset of the Spanish era in 1524, and have produced major ashfalls, along with occasional pyroclastic flows and lava flows. The current eruption began in 2002. On 3 June 2018 a large explosive eruption generated an ash plume that rose to 9 km (30,000 ft) a.s.l. Pyroclastic flows traveled at least 8 km and reached temperatures of 700 degrees Celsius. Tephra and lapilli fell in areas more than 25 km away. Eyewitness accounts described the fast-moving pyroclastic flows inundating fields people were working in, overtaking bridges, and burying homes up to their roof lines in some areas. San Miguel Los Lotes, Alotenango, and El Rodeo (10 km SSE) were the worst affected. As of 22 August, the number of people confirmed to have died due to the pyroclastic flows was 169, and 256 remained missing. As I was searching for information about what was happening I came across videos taken by residents showing the seemingly silent and terrifying pyroclastic flows descending valleys and expanding in all directions. Videos also showed stunned and anguished residents covered with tephra as well as some that had perished. It was raw and deeply affected me. These folks have lived with products of Fuego’s activity for a long time; what happened that day? For weeks I grappled with the very existence of the videos, specifically why I could see almost in real time the pain and devastation residents were themselves trying to understand. The video is helpful for event reconstruction and documentation, but also unfiltered and graphic; I watched but should have been uninvited, and I too felt and still feel loss.
Figure (see Caption)
The pyroclastic flows at Fuego on 3 June 2018 descended multiple ravines and damaged or destroyed a number of roadways and bridges. Photo Credit: AFP/Getty, courtesy of The Express.

Source:
Report for Grimsvotn
An eruption on 1 November was preceded by both long-term and short-term precursors and was triggered by the release of overburden pressure associated with a glacial outburst flood (jokulhlaup), originating from the Grímsvötn subglacial caldera lake. The amount of drop in water level in the Grímsvötn caldera at the onset of the eruption is uncertain, but was probably on the order of 10-20 m. An ash plume rose ~12.2 km a.s.l. On 3 November, eruptive activity occurred in pulses, resulting in a changing eruption column height from 8-9 km to 13-14 km above the volcano. The ash fall sector extended at least 150 km from the eruption site. The distal ash plume was observed in Norway, Finland, and Sweden.
Figure (see Caption)
Close-up aerial view of the Grímsvötn eruption, taken from the S between 1530 and 1615 on 2 November 2004. Courtesy of the Icelandic Meteorological Office; photo credit, Matthew J. Roberts.

Source:
Report for Hierro
The triangular island of Hierro is the SW-most and least studied of the Canary Islands, though contains the greatest concentration of young vents. A submarine eruption in 2011 represented the first documented historical activity. A helicopter observed steaming lava fragments floating over the emission area, S of La Restinga village.
Figure (see Caption)
A natural-color satellite image collected on 10 February 2012 showed the site of the Hierro submarine vent eruption, offshore from the fishing village of La Restinga. NASA Earth Observatory image prepared by Jesse Allen and Robert Simmon, using EO-1 ALI data.

Source:
Report for Home Reef
Pumice rafts are sometimes hard to trace back to their source but reports and pictures are always interesting. Large pumice rafts in the Fiji Islands were circulating during August-September. The source was initially thought to be Metis Shoal but due to some great sleuthing was later confirmed to be from Home Reef.
Figure (see Caption)
View of a large pumice raft after the passage of a sailing vessel near the Lau Group of islands, Fiji, on an unknown date in early to mid-September 2006. Courtesy of the Stormsvalen crew via the Encore II.

Source:
Report for Hunga Tonga-Hunga Ha'apai
The 2009 and 2014-2015 eruptions were interesting to write about because of the multitude of non-traditional observations we received, like from passers-by on boats, folks in private planes, and local photographers. And, ultimately, a new island was built.
Figure (see Caption)
Photograph of a steam-and-ash plume rising from Hunga Ha'apai Island and a submarine vent to the S erupting black tephra. Photo from unknown photographer on the Sloban boat provided by Dana Stephenson/Getty Images on boston.com.

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Report for Jebel at Tair
Before a fissure eruption at Jebel at Tair in 2007, explosive eruptions were reported in the 18th and 19th centuries. The 2007 was observed from several passing NATO ships on the evening of 30 September. Witnesses described a fissure eruption that produced lava fountains approximately 100 m high and ash plumes to a height of 300 m (1,000 ft) a.s.l. Multiple 1-km-long lava flows descended to the sea and a large landslide occurred on the W part of the island. Activity continued for at least two days.
Figure (see Caption)
Lava entering the ocean at Jebel at Tair, 2 October 2007. U.S. Navy photo by Mass Communication Specialist 3rd Class Vincent J. Street.

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Report for Kadovar
The entire population of the island (about 500 people) was evacuated by boats and numerous canoes to Blup Blup (15 km N) just after eruption plumes started rising from a vent on the SE side on 5 January. The next day observers 24 km away noted ash emissions rising from Kadovar and they experienced ashfall. As they were later circling near the island a large event ejected large boulders into the ocean. Within weeks, multiple vents opened, and a lava dome emerged at the SE coast. A lava dome also formed at the summit vent and remains active.
Figure (see Caption)
A large explosion at Kadovar witnessed on 6 January 2018. Courtesy of Brandon Buser.

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Report for Kambalny
The onset of the first eruption in almost 700 years was witnessed by staff at the Kronotsky State Nature Reserve. Satellite data showed an ash plume drifting 35 km SW at altitudes of 5-6 km a.s.l. The eruption intensified later that day, with ash plumes rising as high as 7 km a.s.l. and drifting as far as 255 km SSW. This is an eruption from a remote volcano that may not have made it into the record without witnesses or before the age of satellite observations.
Figure (see Caption)
Eruption of Kambalny on 25 March 2017. Photo by Liana Varavskaya, South Kamchatka Federal Wildlife Sanctuary.

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Report for Karangetang
In early February an ’a’a lava from Kawah Dua (North Crater) had traveled 2.5 km NNW down the Melebuhe River drainage, prompting the evacuation of eight families (about 21 people). Drone footage showed that the flow was about 160 m wide where it crossed a main road (about 210 m from the coast) and about 140 m wide at the coast.
Figure (see Caption)
The lava flow entering the ocean at Karangetang in early February 2019. Courtesy of BNPB.

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Report for Karthala
There were reports of ash emissions and lava at the bottom of the crater in April. A phreatomagmatic eruption occurred in November, causing ashfall and the evacuation of 2,000 people. Preliminary assessments revealed that about 118,000 people living in 75 villages may have been affected by the contamination of domestic water tanks.
Figure (see Caption)
On 18 April 2005 the Karthala eruption generated a lava lake in the Chahalé crater. In this photo, taken the morning of 18 April, considerable portions of the lava lake's surface still remained molten and incandescent.. The lake's surface only remained molten for a few hours. This aerial photo was taken looking from the N. Courtesy of Hamid Soulé.

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Report for Kelud
Kelut has a significant history of deadly eruptions. After more than 5,000 people were killed during an eruption in 1919, an ambitious engineering project sought to drain the crater lake. This initial effort lowered the lake by more than 50 m, but the 1951 eruption deepened the crater by 70 m, leaving 50 million cubic meters of water after repair of the damaged drainage tunnels. After more than 200 deaths in the 1966 eruption, a new deeper tunnel was constructed, and the lake's volume before the 1990 eruption was only about 1 million cubic meters. Amazingly, the eruption of a lava dome in 2007 was quite passive and visually fascinating.
Figure (see Caption)
Kelut's dome seen in low-light conditions on 29 or 30 November 2007. Copyrighted photo by Tom Pfeiffer (Volcano Discovery).

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Report for Kilauea
Kilauea is an accessible volcano with a rich history of awe-inspiring eruptions spanning decades. The observatory was established in 1912, though descriptions of eruptions from native Hawaiians and early missionaries go back further. GVP coverage of activity extends back to 1968 during the first year of the Center for Short-Lived Phenomena. Kilauea was featured in the first Weekly Report in 2000, and has been covered nearly every week since then, until the spectacular and destructive end of the eruption in 2018. I participated in a short field school on Kilauea in 2003. This was first experience seeing active lava flows. I had been carrying a "frozen" burrito with me all day. By the evening it was thawed and mushy, so I laid it across a glowing crack to cook it - best burrito I ever ate!
Figure (see Caption)
Kilauea view from E of E Kupapa`u ocean entry at dusk on 10 July 2001. The bench was comparatively large, reaching out about 120 m from the sea cliff. Note the new black sand beach formed by deposition of glass created when lava enters the sea. Courtesy of HVO.

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Report for Krakatau
The partial collapse of the cone and resulting destructive tsunami, Surtseyan activity, and ash plumes with lightning in December 2018 is not covered in the WVAR, as I was under strict orders to not work as part of a government-wide shut down. It was frustrating to follow the unfolding story on my own and not collect the large amounts of reports and observations being shared widely; information from significant events like this can be buried and repeatedly overprinted by more information. Sometimes it is better to wait until it all sorts itself out and authorities have the chance to breath, curate the data, and write a more accurate account of events. Either way, the estimated removed volume above sea level was 150-180 million m3. The summit of the pre-collapse cone was 338 m, while the highest point post-collapse was reduced to 110 m. While the event was fascinating, scary videos of the tsunami emerged, and are reminders that volcanoes can change many lives in an instant.
Figure (see Caption)
Aerial images of the Anak Krakatau, December 23, 2018. Photo courtesy of Tempo/Syaiful Hadi.

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Report for Krummel-Garbuna-Welcker
The last eruption occurred in 150 CE. The first historically witnessed eruption began at Garbuna on the afternoon of 16 October when "white vapor" rose above the volcano and a couple of felt earthquakes occurred. On 17 October, an eruption column rose 3-4 km above the volcano's summit (or 11,700-15,000 ft a.s.l.). At 1100 fine ash fell on the W and NW sides of the volcano, covering two plantations. Water sources originating from Garbuna were affected by the eruption.
Figure (see Caption)
Photograph of Garbuna taken on 19 October 2005. Photo by Steve Saunders provided courtesy of RVO.

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Report for Kusatsu-Shiranesan
In January an eruption began coincident with the onset of volcanic tremor; there were no indications of an impending eruption. Skiers at the popular Kusatsu Kokusai resort took incredible video showing a plume of tephra and ejected bombs rising over the hillside. Tephra hit a gondola, shattering glass and injuring four skiers. Material crashed through the roof of a lodge, where about 100 people had already been evacuated. Ground Self-Defense Force troops were engaging in ski training at the time of the event; one member died, and seven others were injured. All previous historical activity had been from Yagama Crater on Shiranesan. I used Google Earth and the video taken by skiers to identify the vent, which was on the Motoshiranesan edifice, about 2 km SSE of Yagama Crater, to get the most accurate information into the WVAR.
Figure (see Caption)
Tephra from Mount Kusatsu-Shiranesan covers the N flank of the Motoshiranesan cone and much of the Ainomine cone in this view to the W taken on 23 January 2018. Photo by Suo Takeuma, AP, courtesy of CNN.

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Report for Leroboleng
Two ash plumes observed in July 2003, prior eruptive history includes three small eruptions in the late 1800s. Information about these kinds of transient events is often hard to find at the time and not always discoverable years later. Gathering all of the available information as quickly as possible is a critical part in fulfilling GVP's mission of documenting, understanding, and disseminating information about global volcanic activity.
Figure (see Caption)
Google Earth screen capture of Leroboleng looking NNW.

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Report for Llaima
Llaima, one of Chile's largest and most active volcanoes, contains two main historically active craters, one at the summit and the other, Pichillaima, to the SE. An eruption began on the first of the year in 2008 and during January-February was characterized by Strombolian activity, fissure activity, a lava lake, lava flows, lahars, and tall ash plumes.
Figure (see Caption)
Llaima as seen in eruption on 1 January 2008. Photo taken from W of the volcano between Temuco and Vilcun, Chile. Photo by Antonio Vergara via the flikr website (Creative Commons license).

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Report for Lopevi
An eruption at Lopevi that began on 8 June at 1250 produced an ash cloud that rose at least 6 km a.s.l. and drifted to the WNW. The ash cloud was clearly visible in satellite imagery for many hours. More than 0.9 m of ash was deposited on the uninhabited island of Lopevi and several centimeters covered the neighboring island of Paama, contaminating water for the ~1,600 residents and destroying crops. The National Disaster Management Office project officer stated that hundreds of people on Paama suffered from throat, chest, and lung problems as a result of breathing ash and gas. Ashfall had almost ceased by 12 June, but strong trade winds continued to spread the ash.
Figure (see Caption)
The illustrated photograph of Lopevi was taken on 9 June 2001 and shows lava flows from 2000 and 2001. Courtesy of S. Wallez.

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Report for Mayon
In May a phreatic eruption ejected large "room-sized rocks" towards about 30 climbers, killing five and injuring eight. The volcano had been quiet for more than a year. This event highlights the danger of entering an exclusion zone, even during non-eruptive periods, in this case one that encompasses a 6-km-radius.
Figure (see Caption)
Photo taken at 0800 on 7 May 2013 of a phreatic eruption at Mayon. Dense billowy plume is largely white with areas of brown to gray. News reports said eruptions like this were, according to PHIVOLCS, a regular occurrence. PHIVOLCS reported this plume as 500 m tall. According to news reports, rocks discharged by this eruption at 0800 killed five climbers and injured at least seven others in a region close to the summit and well within an exclusionary zone. Courtesy of PHIVOLCS.

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Report for Merapi
One of Indonesia's most active volcanoes and lies in one of the world's most densely populated areas. Merapi dominates the landscape immediately north of the major city of Yogyakarta, 30 km SSW. An eruption in 2006 caused two deaths and the evacuation of about 22,000 people; the eruption was dominated by ash emissions, vigorous dome growth and collapse, and pyroclastic flows that traveled as far as 7 km.
Figure (see Caption)
A Merapi pyroclastic flow in its early stages as seen at 08:50:53 on 10 June 2006. Photo credit to BPPTK; provided courtesy of CVGHM.

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Report for Momotombo
The first eruption at Momotombo after around 100 years began in December with an explosion and a gas-and-ash plume. Explosions ejected incandescent tephra and a slow-moving lava flow traveled on the N flank. Ashfall was reported in nearby communities to the W and SW. Fieldwork revealed a small, incandescent, circular crater halfway up Momotombo's E flank that was fuming during the morning on 6 December. An explosion on 7 December destroyed part of the crater.
Figure (see Caption)
Eruption at Momotombo. Photo courtesy of Jorge Mejía Peralta.

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Report for Nabro
An eruption plume from this remote volcano initially rose to altitudes of 9.1-13.7 km (30,000-45,000 ft) a.s.l. on 13 June, then was later detected at altitudes of 6.1-10.7 km (20,000-35,000 ft) a.s.l. during 13-14 June. Ashfall covered hundreds of kilometers and the government evacuated area residents. A lava flow traveled WNW.
Figure (see Caption)
A false-color image of Nabro, acquired by the Advanced Land Imager (ALI) aboard the Earth Observing-1 (EO-1) satellite on 24 June 2011, highlighted hot areas throughout the lava flow and flow front, as well as above the vent in the center of the caldera. Courtesy of NASA Earth Observatory.

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Report for Nevado del Huila
The first historical eruption from this little-known volcano was an explosive eruption in the mid-16th century. Long-term, persistent steam columns had risen from Pico Central prior to the next eruption in 2007, when explosive activity was accompanied by damaging mudflows. An eruption on 20 November 2008 destroyed part of a new lava dome that had formed during the previous months. Two gas-and-ash plumes rose to altitudes of 12.4-15.4 km (40,700-50,500 ft) a.s.l. and drifted W and SE. Hot material melted areas of the surrounding glacier and caused lahars that damaged infrastructure and destroyed homes; there may have been as many as 10 fatalities and 10 others were missing, and several populations were left without means of communication.
Figure (see Caption)
A series of aerial photos of Nevado del Huila taken from multiple angles and distances on 20 February 2007. Courtesy of the Colombian Air Force and INGEOMINAS.

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Report for Nyiragongo
Nyiragongo is one of Africa's most notable volcanoes, it contained a lava lake in its deep summit crater that was active for half a century before draining catastrophically through its outer flanks in 1977. Another eruption in 2002 produced lava flows that covered much of the city of Goma and led to the self-evacuation of ~400,000 people.
Figure (see Caption)
Nyiragongo's January 2002 lavas slowly advancing across a road at an intersection. This area of Goma is called Signers rotary point. The sign advertises the Ishango Guest House. Note the lava-immersed but still-standing tree, which at this stage, may have only had substantial burns near the base of its trunk. Provided courtesy of Wafula.

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Report for Ontakesan
An unexpected phreatic eruption that killed 47 tourists and injured almost 70 more again was a poignant reminder of the power and unpredictability of a natural system. The eruption produced a pyroclastic flow that traveled more than 3 km down the S flank. Some fleeing tourists recorded the pyroclastic flow descended upon them as they ran, giving viewers an insight into this deadly hazard and the terrifying event.
Figure (see Caption)
Four photos of the Ontakesan 2014 eruption captured by the Chubu Regional Development Bureau's camera at Takigoshi on 27 September.

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Report for Puyehue-Cordon Caulle
Significantly increased seismicity over a period of a few days led to the evacuation of 700 residents on 4 June. Later that day, an explosion produced a 5-km-wide ash-and-gas plume that rose to altitudes of 10.7-13.7 km (35,000-45,000 ft) a.s.l. and drifted 870 km ESE. The next day an ash plume continued to rise to altitudes of 10.7-12.2 km (35,000-40,000 ft) a.s.l. and had drifted as far as 1,778 km ESE, over the coast of Argentina, and out into the Atlantic Ocean, disrupting flights. During 4-5 June ashfall several centimeters thick was reported 100 km SE in Argentina. At least five pyroclastic flows, possibly as long as 10 km, were generated from partial collapses of the eruptive column and traveled N in the Nilahue River drainage. Pumice and vitreous tephra had accumulated in many area lakes and rivers, and ash had turned many rivers darker. Poor visibility and flight disruptions continued on 10 June. On 13 June the eruptive vent diameter was 300-400 m. Gas-and-steam plumes rose from two or three locations along the same fissure as the eruptive vent. Ashfall and column collapses were visible. At night incandescence from the base of the plume reached 1.5-2 km high. By 17 June ash plumes had circumnavigated the globe. Flights in South Africa were disrupted during 18-19 June. A 50-m-wide lava flow from the emissions center had traveled 200 m NW and 100 m NE, filling up a depression by 20 June.
Figure (see Caption)
Puyehue-Cordón Caulle's eruption seen in a long-exposure photo taken during 4-6 June 2011. Courtesy of Daniel Basualto, European Pressphoto Agency.

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Report for Rabaul
The most dramatic event at this volcano during the past several years occurred when a Strombolian explosion on 29 August sent an ash plume to ~18 km altitude. One of my favorite videos showing a shock wave is from an explosion at Rabaul on that same day.
Figure (see Caption)
Incandescent lava exploding from Tavurvur (Rabaul Caldera) on 29 August 2014. Courtesy of Emma Edwards, reported at Traveller.com.

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Report for Sarychev Peak
Eruptions have been recorded since the 1760's and include both quiet lava effusion and violent explosions. One of the largest historical eruptions of Sarychev Peak in 1946 produced pyroclastic flows that reached the sea. A short but incredible series of images of the 2009 eruption was captured by astronauts aboard the International Space Station.
Figure (see Caption)
The field crew on a beach to inspect Sarychev Peak's recent pyroclastic flows. By the time of their 26-28 June visit, waves had eroded the fresh deposits that must have once covered this beach face. Massive, jointed rocks in the cliff backing the beach are older rocks; new deposits drape the upper cliff. Note steaming peak in the background. SVERT volcanologists (from left): Dmitrii Kozlov, Igor Koroteev, Artyom Degterev, Rafael Zharkov (far right), and Alexander Rybin (front right). Courtesy of SVERT.

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Report for Sinabung
The initial phreatic eruption on 27 August heralding the first historic eruption. By 30 August there had been 20,000-30,000 residents evacuated. The next months were characterized by fluctuating but overall increasing levels of activity, and cycles of residents being evacuated and returning to their homes. On 25 November BNPB reported that 17,713 people, out of the 20,270 residents living within 5 km, had been evacuated to 31 shelters. At 1030 on 1 February a large dome collapse generated pyroclastic flows that traveled 4.5 km S, killing 17 people that had entered the 5-km exclusion zone without permission. BNPB lists the victims’ names and their ages; I was saddened to see so many young people among the deceased. On 4 February the number of displaced people reached 31,739 (9,915 families) in 42 evacuation centers, many from outside of the exclusion zone. Activity continued through mid-2018. An eruption period was recorded in mid-2019, and activity again returned in 2020.
Figure (see Caption)
A woman carrying her daughter in an agricultural plot near Sinabung as an ash plume rose and pyroclastic flows descended the flanks on 4 January 2014. Photo by Ifansasti (2014).

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Report for Sirung
On 8 May a three-hour long ash eruption from Sirung was accompanied by loud sounds and incandescence that reached 10 m above the crater. An ash plume rose 3.5 km above the crater and drifted N, producing ashfall up to 4 mm thick near the crater.
Figure (see Caption)
Google Earth screen capture of Sirung looking SW.

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Report for Soufriere Hills
A series of explosions and pyroclastic flows from collapses of parts of the Soufriere Hills lava dome during 12-13 July caused significant falls of ash and rock fragments over all of the inhabited parts of Montserrat. The ashfall deposit was 115 mm thick at Lime Kiln Bay. The ash burden resulted in the collapse of several wooden buildings in the Salem area. Vegetation damage was extensive with downed trees and branches broken from many others. Ashfall from this event was reported on the islands of Nevis, St Kitts, Anguilla, and St Maarten, and resulted in the closure of several airports. Several pyroclastic surges flowing down the Tar River Valley and 2 km over the ocean. This volcano was the subject of my Master's thesis.
Figure (see Caption)
Illustrated photo showing dome growth at Soufriere Hills between February 2002 and February 2003. Courtesy of Robert Benward, Volcano Watch International.

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Report for St. Helens
Shortly before noon on 1 October, Mount St. Helens emitted a plume of steam and minor ash from an area of new crevasses that had opened in a portion of the crater glacier between the headwall of the 1980 crater and the lava dome. This marked the first eruption from Mount St. Helens since a series of phreatic explosions during 1989-1991; the 2004-2008 activity was characterized by rapid dome-building events seen in this time-lapse video.
Figure (see Caption)
An aerial photo looking downward and N-ward into the crater of Mt. St. Helens on 27 October 2004. Courtesy of CVO.

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Report for Taal
A phreatic eruption from a dike intrusion began on 12 January. Activity escalated and a total evacuation of the island and high-risk areas within a 14-km radius began. The eruption plume of steam, gas, and tephra significantly intensified and rose 10-15 km (32,800-49,200 ft) a.s.l., producing frequent lightning. Lava fountaining began the next day; fountains were 500-800 m tall. Ground cracking was observed in areas mainly to the SW. There were a total of 148,987 people in 493 evacuation centers on 21 January; the landscape was eerily gray with tephra deposits which devastated the local residences. In the days following the start of the eruption a fascinating video emerged possibly showing the very start of the eruption.
Figure (see Caption)
Ash plumes from Taal in the initial days of the January 2020 eruption. Courtesy of Eloisa Lopez/Reuters, Kester Ragaza/Pacific Press/Shutterstock, Ted Aljibe/AFP via Getty Images, via The Guardian.

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Report for Tengger Caldera
Nothing exceptional occurred in 2015, except that activity resumed at Bromo, the youngest cone, after almost a year of low-to-no activity. This volcano is included in the list because it is a popular tourist area and the many breath-taking tourist photos posted online are worth browsing through (which I have spent hours doing).
Figure (see Caption)
Photo of a man watching an ash plume rising from the Bromo cone in Tengger Caldera on 5 January 2016. Courtesy of Reuters/Darren Whiteside.

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Report for Tongariro
A short-lived (~1-2 minutes) phreatic eruption occurred at the Te Mari craters area, followed by a series of discrete small earthquakes over the next few tens of minutes. An ash plume drifted E and ashfall was reported in areas around the volcano. Blocks of old and hydrothermally altered lava, as large as 1 m in diameter, ejected by the eruption fell 1.5-2 km from the Te Mari craters area. The last eruption occurred in 1896.
Figure (see Caption)
Photographs taken after Tongariro's 6 August 2012 phreatic eruption showing the Upper Te Maari vent area. Courtesy of GeoNet.

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Report for Whakaari/White Island
A deadly and short-lived (1-2 minutes) eruption on 9 December originated from the crater floor and generated an ash plume that rose 3.7 km (12,000 ft) above the vent. A tour group were on the island at the time of the eruption causing fatalities and victims with severe burns; survivors faced a long recovery, and some would later die. By early February 2020 the death toll was 21. Video of the event emerged, taken by a tourist on a boat who had just left the island and realized that another group was likely there. The event shed light on volcano tourism and the unpredictability of volcanic eruptions once again.
Figure (see Caption)
The beginning of the Whakaari/White Island 9 December 2019 eruption viewed from a boat that left the island about 20-30 minutes prior. Copyright of Michael Schade, used with permission.

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Report for Zhupanovsky
The last major eruption took place about 800-900 years BP. Historical eruptions have consisted of relatively minor explosions from the third cone. On 24 October a phreatic eruption began at about 0300 and generated an ash plume that rose 5 km (16,400 ft) a.s.l. The ash plume was visible in satellite images drifting 40 km SE and S. Ash deposits about 10 cm thick were visible at the summit of the central part of the volcano, and deposits about 1 mm thick covered the Nalychevo Valley. This was the first eruption since the 1950’s.
Figure (see Caption)
A picture of Zhupanovsky taken on 26 October 2013. Captured by S. Samoilenko, Institute of Volcanology and Seismology, Russian Academy of Sciences, Far Eastern Branch (IVS FEB RAS).

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Report for Zubair Group
Fishermen from the port city of Salif on the western Red Sea coast of Yemen reported an offshore eruption from the island of Jebel Zubair, about 60 km SW, with lava fountains rising 20-30 m above the summit on 19 December. On 19 December a SO2 cloud was detected in an OMI satellite image. MODIS imagery from 20 December shows a plume rising from a submarine eruption about 1.5 km SW of Haycock and N of Rugged (near the N end of the Az-Zubair island group), and about 12 km NE of Jebel Zubair island. A bathymetric sketch map made in 1973 indicates a water depth of about 100 m in that area. Two new islands were built.
Figure (see Caption)
NASA Earth Observatory images captured by the Advanced Land Imager (ALI) aboard NASA's Earth Observing-1 (EO-1) satellite on (a) 24 October 2007 and (b) 23 December 2011. Courtesy of Jesse Allen and Michon Scott, NASA Earth Observatory.

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