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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 9 March-15 March 2022
Name Location Eruption Start Date Report Status
Asosan Kyushu (Japan) New
Bezymianny Central Kamchatka (Russia) 2010 May 21 (?) New
Manam Northeast of New Guinea 2014 Jun 29 New
Davidof Aleutian Islands (USA) Continuing
Fuego South-Central Guatemala 2002 Jan 4 Continuing
Great Sitkin Andreanof Islands (USA) 2021 May 25 Continuing
Ibu Halmahera 2008 Apr 5 Continuing
Kilauea Hawaiian Islands (USA) 2021 Sep 29 Continuing
Lewotolok Lembata Island 2020 Nov 27 Continuing
Merapi Central Java 2020 Dec 31 Continuing
Pavlof Alaska Peninsula, Alaska 2021 Aug 5 Continuing
Rincon de la Vieja Costa Rica 2021 Jun 28 Continuing
Semeru Eastern Java 2014 Apr 1 ± 15 days Continuing
Semisopochnoi Aleutian Islands (USA) Continuing
Suwanosejima Ryukyu Islands (Japan) 2004 Oct 23 Continuing
Taal Luzon (Philippines) Continuing
Wolf Isla Isabela (Galapagos) Continuing
All times are local unless otherwise stated.
Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 18,190 individual reports over 1,134 weeks (average of 16 per week) on 327 different volcanoes.

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Agung Cotopaxi Iliamna Little Sitkin Planchon-Peteroa Stromboli
Ahyi Cuicocha Iliwerung Llaima Poas Sulu Range
Aira Cumbal Inielika Lokon-Empung Popocatepetl Sumbing
Akan Dabbahu Ioto Lonquimay Purace Sundoro
Alaid Davidof Irazu Lopevi Puyehue-Cordon Caulle Suretamatai
Alu-Dalafilla Dempo Iya Machin Rabaul Suwanosejima
Ambae Descabezado Grande Izu-Torishima Makushin Raikoke Taal
Ambang Dieng Volcanic Complex Jackson Segment Maly Semyachik Ranakah Tair, Jebel at
Ambrym Dukono Kaba Manam Raoul Island Takawangha
Anatahan Ebeko Kadovar Manda Hararo Rasshua Talang
Aniakchak Ebulobo Kaitoku Seamount Marapi Raung Tambora
Antillanca Volcanic Complex Edgecumbe Kama'ehuakanaloa Maroa Redoubt Tanaga
Antuco Egon Kambalny Martin Reventador Tandikat-Singgalang
Apoyeque Ekarma Kanaga Masaya Reykjanes Tangkoko-Duasudara
Arenal Epi Kanlaon Maule, Laguna del Rincon de la Vieja Tangkuban Parahu
Asamayama Erebus Karangetang Mauna Loa Rinjani Tara, Batu
Askja Erta Ale Karkar Mayon Ritter Island Ta'u
Asosan Etna Karthala McDonald Islands Rotorua Taupo
Atka Volcanic Complex Etorofu-Yakeyama [Grozny Group] Karymsky Melimoyu Ruang Telica
Augustine Eyjafjallajokull Kasatochi Merapi Ruapehu Tenerife
Avachinsky Fagradalsfjall Katla Midagahara Ruiz, Nevado del Tengger Caldera
Awu Fernandina Katmai Misti, El Sabancaya Three Sisters
Axial Seamount Fogo Kavachi Miyakejima Sakar Tinakula
Azul, Cerro Fonualei Kelimutu Momotombo Salak Tofua
Azumayama Fournaise, Piton de la Kelud Monowai San Cristobal Tokachidake
Bagana Fourpeaked Kerinci Montagu Island San Miguel Tolbachik
Balbi Fuego Ketoi Moyorodake [Medvezhia] San Vicente Toliman
Bamus Fujisan Kharimkotan Mutnovsky Sangay Tongariro
Banda Api Fukutoku-Oka-no-Ba Kick 'em Jenny Myojinsho Sangeang Api Tungurahua
Bardarbunga Galeras Kie Besi Nabro Santa Ana Turrialba
Barren Island Galunggung Kikai Negra, Sierra Santa Maria Ubinas
Batur Gamalama Kilauea Negro, Cerro Sao Jorge Ugashik-Peulik
Bezymianny Gamkonora Kirishimayama Nightingale Island Sarigan Ukinrek Maars
Bogoslof Gareloi Kita-Ioto Nishinoshima Sarychev Peak Ulawun
Brava Gaua Kizimen Nisyros Saunders Unnamed
Bristol Island Gorely Klyuchevskoy Novarupta Savo Unnamed
Bulusan Great Sitkin Kolokol Group NW Rota-1 Semeru Veniaminof
Calbuco Grimsvotn Koryaksky Nyamulagira Semisopochnoi Villarrica
Callaqui Guagua Pichincha Krakatau Nyiragongo Seulawah Agam Vulcano
Cameroon Guallatiri Krummel-Garbuna-Welcker Ofu-Olosega Sheveluch West Mata
Campi Flegrei del Mar di Sicilia Guntur Krysuvik-Trolladyngja Okataina Shishaldin Westdahl
Cayambe Hachijojima Kuchinoerabujima Okmok Simbo Whakaari/White Island
Chachadake [Tiatia] Hakoneyama Kurikomayama Ontakesan Sinabung Witori
Chaiten Heard Kusatsu-Shiranesan Oraefajokull Sinarka Wolf
Chiginagak Hekla Kverkfjoll Osorno Siple Yakedake
Chikurachki Helgrindur La Palma Pacaya Sirung Yasur
Chiles-Cerro Negro Hierro Lamington Pagan Slamet Yufu-Tsurumi
Chillan, Nevados de Hokkaido-Komagatake Lamongan Palena Volcanic Group Snaefellsjokull Zaozan [Zaosan]
Chirinkotan Home Reef Langila Paluweh Soputan Zavodovski
Chirpoi Hood Lanin Panarea Sorikmarapi Zhupanovsky
Ciremai Huaynaputina Lascar Papandayan Sotara Zubair Group
Cleveland Hudson, Cerro Lateiki Parker Soufriere Hills
Colima Huila, Nevado del Lengai, Ol Doinyo Pavlof Soufriere St. Vincent
Colo Hunga Tonga-Hunga Ha'apai Leroboleng Pelee South Sarigan Seamount
Concepcion Ibu Lewotobi Peuet Sague Spurr
Copahue Ijen Lewotolok Pinatubo St. Helens
 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 Asosan
JMA reported that the amplitude of volcanic tremor signals at Asosan had decreased at around 1540 on 27 February and remained low. White plumes rose 600-800 m above the crater during 7-14 March. During field surveys conducted on 8 and 10 March sulfur dioxide gas emissions were 1,300 and 900 tons per day, respectively; these values were higher than those measured before the October 2021 eruption. No other changes were observed. JMA lowered the Alert Level to 2 (on a scale of 1-5) on 14 March and warned the public to stay at least 1 km away from the crater.
Source: Japan Meteorological Agency (JMA)
Report for Bezymianny
According to the Tokyo VAAC an ash plume from Bezymianny was visible in satellite images at 0310 on 15 March drifting W at an altitude of 4.9 km (16,000 ft) a.s.l., signifying renewed explosive activity. By 0600 ash plumes rose to 6.1 (20,000 ft) a.s.l. and drifted S. Ash continued to be emitted through the day. The eruption intensified and at 1322 ash plumes rose to 8.2 km (27,000 ft) a.s.l. and drifted SW. Satellite images showed block-and-ash flows descended the SE flank to the base, with dense, dark brown ash plumes rising along its path. Thermal anomalies were visible at the summit and at the end of the flow. At 1750 possible ash plumes rose to 4.3 km (14,000 ft) a.s.l. and drifted W. Ash emissions continued to be visible in subsequent satellite images. Activity again intensified, and at 0110 on 16 March ash plumes rose to 11.6 km (38,000 ft) a.s.l. and drifted NE. Ash emissions continued to be detected in images through the day.
Sources: Tokyo Volcanic Ash Advisory Center (VAAC), Sentinel Hub
Report for Manam
The Darwin VAAC reported that on 14 March an ash plume from Manam rose to 2.4 km (8,000 ft) a.s.l. and drifted W. Ash plumes later that day and on 15 March rose to 3 km (10,000 ft) a.s.l. and drifted SW and W.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Davidof
According to AVO the earthquake swarm that began on 24 January in the vicinity at Davidof continued at least through 15 March with a few small earthquakes recorded each day by seismometers on Little Sitkin (15 km E). The rate was variable, though the total number of events was similar to the previous week. The Aviation Color Code remained at Yellow and the Volcano Alert Level remained at Advisory.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
Report for Fuego
INSIVUMEH and CONRED confirmed that pyroclastic flows at Fuego descended multiple flanks on 7 March, though those that traveled SW, S, and SE went as far as 7 km. Vegetation and crops were impacted by the farther-traveling, high-temperature pyroclastic flows as well as ashfall, based on satellite data and field reports from staff at the Observatorio Vulcanológico del Volcán de Fuego (OVFGO). A large amount of ash also fell on homes and structures.

As many as 10 explosions per hour were recorded during 8-15 March. Multiple daily ash plumes rose up to 1.3 km above the summit and drifted as far as 20 km W and SW. Ashfall was reported almost daily in areas downwind, including Morelia (9 km SW), Panimaché I and II (8 km SW), Santa Sofía (12 km SW), El Porvenir (8 km ENE), Sangre de Cristo (8 km WSW), finca Palo Verde, Yepocapa (8 km NW). Shock waves from the explosions and rumbling sounds rattled local structures. Block avalanches mainly descended the Ceniza (SSW), Seca (W), Trinidad (S), Taniluyá (SW), and Las Lajas (SE) drainages, often reaching vegetated areas. Explosions ejected incandescent material up to 200-400 m above the summit during 11-14 March.
Sources: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH), Coordinadora Nacional para la Reducción de Desastres (CONRED)
Report for Great Sitkin
AVO reported that slow lava effusion at Great Sitkin continued during 8-15 March and very low seismicity persisted. The rate of effusion slightly increased from 28 February to 11 March, based on radar data collected on those two dates; lava was extruded in all direction from the vent and the southern lobe advanced 20 m. Snow covered most of the flow except for the advancing fronts of the lava lobes and around the vent area. Elevated surface temperatures were periodically identified in satellite images. Minor steaming was visible in webcam images on 12 March. The steaming was dense and also visible in satellite images during 12-13 March. The Aviation Color Code and the Volcano Alert Level remained at Orange and Watch, respectively.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
Report for Ibu
PVMBG reported that the eruption at Ibu continued during 9-15 March. Gray-and-white ash plumes rose 200-1,000 m above the summit and drifted N and NE. Avalanches traveled 100-400 m N and NW during 14-15 March. The Alert Level remained at a 2 (on a scale of 1-4), and the public was warned to stay at least 2 km away from the active crater and 3.5 km away on the N side.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Kilauea
HVO reported that lava effusion from vents in the lower W wall of Kilauea’s Halema`uma`u Crater continued at variable rates during 8-15 March. Throughout February the main cone had broken down and by 4 March lava was effusing from multiple vents, including the tallest cone (19 m high); by 11 March lava was supplied from an embayment just N of the cone which had grown to 27 m high. Lava continued to feed the western active lava lake. Lava breakouts along the SE, NE, and NW lake margins were visible on a few of the days. Minor and slow crustal overturning occurred on the NW and SE parts of the lake’s margins during 13-14 March. The Aviation Color Code and the Volcano Alert Level remained at Orange and Watch, respectively.
Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Report for Lewotolok
The eruption at Lewotolok continued during 8-15 March according to PVMBG. Daily white-and-gray ash plumes rose as high as 1 km above the summit and drifted E, W, and NW. Crater incandescence, lava effusion, and rumbling sounds were reported during 7-10 March. The Alert Level remained at 3 (on a scale of 1-4) and the public was warned to stay 3 km away from the summit crater and 4 km away from the crater on the SE flank.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Merapi
BPPTKG reported that parts of Merapi’s summit lava dome collapsed during 9-10 March, sending pyroclastic flows as far as 5 km SE down the Gendol drainage. At around 2318 on 9 March ash plumes rose at least 3 km above the summit and drifted SE. Ashfall was reported in several villages downwind, including in the Kemalang, Sawangan, Dukun, and Selo sub-districts, and 50 people from Bale Rante Village evacuated. The total volume that collapsed was an estimated 646,000 cubic meters, making the volume of the remaining dome material about 2,582,000 cubic meters.

Overall, during 4-10 March, there was a total of 101 lava avalanches and one pyroclastic flow that descended the Bebeng drainage on the SW flank a maximum distance of 2 km. Extrusion at the SW lava dome continued; the volume of the dome was an estimated 1.58 million cubic meters, similar to the previous few weeks. Pyroclastic flows in the Gendol drainage totaled 18 during the week, and there were 17 lava avalanches that traveled as far as 1.5 km. Seismicity remained at high levels with an increase in the intensity of signals. The Alert Level remained at 3 (on a scale of 1-4), and the public was warned to stay 3-5 km away from the summit based on location.
Sources: Balai Penyelidikan dan Pengembangan Teknologi Kebencanaan Geologi (BPPTKG), Badan Nacional Penanggulangan Bencana (BNPB)
Report for Pavlof
AVO reported that the eruption at a vent on Pavlof’s upper E flank was ongoing during 8-15 March, and small explosions were detected in local seismic and infrasound data on most days. Tremor levels was characterized as strong during 8-10 March and moderate during the rest of the week. A satellite image acquired on 7 March showed highly elevated surface temperatures near the vent (likely due to an accumulation of lava spatter), and a dark lahar deposit extending 750 m down the SE flank. Minor ash deposits were visible around the vent. Elevated surface temperatures were visible on most days of the week, though cloud cover sometimes prevented observations, consistent with continued activity. On 14 March satellite images showed minor lava effusion at the vent. The Volcano Alert Level remained at Watch and the Aviation Color Code remained at Orange.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
Report for Rincon de la Vieja
OVSICORI-UNA reported that an eruptive event at Rincón de la Vieja was recorded at 0956 on 15 March. No plumes were visible due to weather conditions.
Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)
Report for Semeru
PVMBG reported that the eruption at Semeru continued during 8-15 March, though weather conditions sometimes hindered views. Almost daily eruptive events produced white-and-gray plumes that rose as high as 1 km above the summit and drifted S, SW, and W. Avalanches were detected but not visually confirmed during 12-13 March. The Alert Level remained at 3 (on a scale of 1-4). The public was warned to stay at least 500 m away from Kobokan drainages within 17 km of the summit, along with other drainages originating on Semeru, including the Bang, Kembar, and Sat, due to lahar, avalanche, and pyroclastic flow hazards.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Semisopochnoi
AVO reported that low-level eruptive activity at Semisopochnoi's North Cerberus cone continued during 8-15 March. Seismic tremor and sometimes numerous daily explosions were detected in seismic and regional infrasound data. Minor ash emissions were visible in webcam images during 8-9 and 14-15 March; likely plumes on other days may have been hidden due to clouds. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
Report for Suwanosejima
JMA reported that eruptive activity continued to be recorded at Suwanosejima's Ontake Crater during 7-14 March. Eruption plumes rose as high as 1.7 km above the crater rim and ejected blocks 400 m away from the crater. Ashfall was reported in Toshima village (3.5 km SSW) during 7-11 March. The Alert Level remained at 3 and the public was warned to stay 2 km away from the crater.
Source: Japan Meteorological Agency (JMA)
Report for Taal
PHIVOLCS reported that unrest at Taal continued during 7-15 March. Hot volcanic fluids circulated and upwelled in the crater lake, and daily gas-and-steam plumes that rose as high as 2.4 km above the lake drifted SW and NNW. Sulfur dioxide emissions continued to be elevated, averaging 7,695-15,306 tonnes/day during 7, 11, and 13-14 March. There were 8-49 daily volcanic earthquakes recorded during 10-14 March, including as many as 45 daily periods of volcanic tremor, each lasting 2-90 minutes. One hybrid event was recorded during 11-12 March. The Volcano Alert Level remained at a 2 (on a scale of 0-5). PHIVOLCS reminded the public that the entire Taal Volcano Island is a Permanent Danger Zone (PDZ) and warned against extended stays on Taal Lake.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
Report for Wolf
IG reported that the eruption at Wolf continued during 8-15 March. Daily thermal alert counts, as many as around 230, indicated active and advancing lava flows on the SSE flank. Diffuse sulfur dioxide gas plumes were detected in satellite data almost daily.
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG)