Logo link to homepage

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 5 June-11 June 2024
Name Country Eruption Start Date Report Status
Bezymianny Russia 2016 Dec 5 New
Ibu Indonesia 2008 Apr 5 New
Kanlaon Philippines 2024 Jun 3 New
Kilauea United States New
Lewotobi Indonesia 2023 Dec 23 New
Reykjanes Iceland 2023 Dec 18 New
San Cristobal Nicaragua New
Taal Philippines 2024 Apr 12 New
Aira Japan 2017 Mar 25 Continuing
Dukono Indonesia 1933 Aug 13 Continuing
Ebeko Russia 2022 Jun 11 Continuing
Great Sitkin United States 2021 May 25 Continuing
Lewotolok Indonesia 2020 Nov 27 Continuing
Marapi Indonesia 2023 Dec 3 Continuing
Merapi Indonesia 2020 Dec 31 Continuing
Nyiragongo DR Congo 2002 May 17 (?) Continuing
Reventador Ecuador 2008 Jul 27 Continuing
Semeru Indonesia 2017 Jun 6 Continuing
Sheveluch Russia 1999 Aug 15 Continuing
Suwanosejima Japan 2004 Oct 23 Continuing
All times are local unless otherwise stated.
Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 20,183 individual reports over 1,223 weeks (average of 17 per week) on 334 different volcanoes.

Search by Date



Use the dropdowns to choose the year and week for archived Weekly Reports.

Use the dropdowns to choose the year and week for archived Weekly Reports.          



Search by Volcano



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


Download Smithsonian / USGS Weekly Volcanic Activity Report Network RSS Feed

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.



Download Smithsonian / USGS Weekly Volcanic Activity Report Network CAP Feed

The CAP (Common Alerting Protocol) feeds are XML files specifically formatted for disaster management. They are similar in content to the RSS feed, but contain no active links.



Download Smithsonian/USGS Weekly Volcanic Activity Report Network Link Download Smithsonian / USGS Weekly Volcanic Activity Report Network Link

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 Bezymianny
KVERT reported that a daily thermal anomaly over Bezymianny was identified in satellite images during 31 May-6 June. According to the Tokyo VAAC an ash plume was identified in satellite images at 1350 (local time) on 5 June rising to 5.5 km (18,000 ft) a.s.l. and drifting E. The ash plume had dissipated by 1720 (local time). Dates are UTC; specific events are in local time where noted.
Sources: Kamchatkan Volcanic Eruption Response Team (KVERT), Tokyo Volcanic Ash Advisory Center (VAAC)
Report for Ibu
PVMBG reported that the eruption at Ibu continued during 5-11 June with occurrences of tall ash plumes. White, gray, and black ash plumes rose as high as 5 km above the crater rim and drifted in multiple directions during 5-6 and 9 June. White steam-and-gas plumes rose 200-1,000 m above the crater rim and drifted in multiple directions during on 29 May and 3 June. White-and-gray ash plumes rose as high as 4 km and drifted in multiple directions on 11 June. The Alert Level remained at 4 (the highest level on a four-level scale) and the public was advised to stay 4 km away from the active crater and 7 km away from the N crater wall opening.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Kanlaon
PHIVOLCS reported that intense rain on 6 June mobilized ash deposited during the 3 June eruption at Kanlaon causing lahars to descend the S flank and impact local communities. The lahars began at around 1300 and lasted 25 minutes based on seismic data. They deposited cohesive gray mud, plant debris, and gravel in at least four stream channels including Tamburong Creek, which courses through Biak-na-bato and Calapnagan, La Castellana; Intiguiwan River in Guinpanaan and upstream Baji-Baji Falls in Cabacungan, La Castellana; Padudusan Falls, Masulog, Canlaon City; and the Binalbagan River, which drains the S flank of the volcano. Lahars overflowed parts of Tamburong Creek and deposited material a few centimeters thick along a section of the main road in Biak-na-Bato, making it impassable to motorists. Thunderstorms continued and channel-confined lahars on the S and W flank were detected the next day. The lahars began at around 1450 on 7 June and lasted 80 minutes based on seismic data. They were described as cohesive and cement-like and carried tree debris along the Baji-Baji Falls and Ibid Creek, in Cabacungan, La Castellana. Lahars also descended the Santo Guintubdan, Ara-al, La Carlota City and muddy waters were observed in the Buslugan, Busay Oro, Busay Abaga, Busay Mayor, Busay Kapid, Kabkaban, Ezzy, Busay Ambon, and Labi Labi falls. Voluminous gas-and-steam emissions rose 1.5-2 km above the summit and drifted NE and SW during 6-8 June.

A special notice was issued on 8 June due to elevated sulfur dioxide levels. During a field survey sulfur dioxide flux averaged of 4,397 tonnes per day (t/d) which was the highest level recorded so far this year and the second highest land-based measurement for Kanlaon. Sulfur dioxide emissions were elevated in 2024, averaging 1,458 t/d, though after the 3 June eruption the daily average increased to 3,347 t/d. Emisisons had decreased on 9 June, averaging 3,304 t/d. The rate of volcanic earthquakes persisted at above-background levels with an average of 33 events per day. Moderate steam-and-gas emissions rose 300-500 m above the summit and drifted NE and SW during 9-11 June. At least 1,237 families or 4,190 residents of five barangays remained in evacuation shelters according to a 12 June news article; many had health problems from exposure to sulfur dioxide gas and ash. The Alert Level remained at 2 (on a scale of 0-5) and PHIVOLCS reminded the public to remain outside of the 4-km-radius Permanent Danger Zone.
Sources: Philippine Institute of Volcanology and Seismology (PHIVOLCS), The Philippine Star
Report for Kilauea
HVO lowered the Volcano Alert Level for Kilauea to Advisory and the Aviation Color Code to Yellow on 5 June, noting that the fissure eruption that had occurred in a remote area along the Southwest Rift Zone on 3 June was unlikely to restart. Tremor, degassing, and incandescence associated with the fissure vents had substantially decreased. A sulfur dioxide emission rate of 5,500 tonnes per day (t/d) was measured at the eruption site on 4 June, well above background levels (100 t/d or less). Sulfur dioxide emissions decreased to 400 t/d on 6 June and likely continued to decline over subsequent days. Lava flows only covered about 350,000 square meters (0.35 square kilometers). Incandescence from the flow field was visible in webcam images, but decreased daily and was no longer visible by 10 June.
Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Report for Lewotobi
PVMBG reported that eruptive activity at Lewotobi’s Laki-laki volcano increased during 26 May-9 June. Eruptive activity increased daily, and ash-and-steam plumes became taller, rising 100-900 m above the summit on average and drifting in multiple directions; dense ash emissions rose 1-1.1 km above them summit on 5 and 9 June. The number of volcanic earthquakes as well as earthquake signals indicating eruptive events and avalanches significantly increased. PVMBG noted that there was also a significant increase in other types of seismic signals, though those increases were unrelated to the eruption; repairs and changes to the seismic network resulted in better detection of seismic signals. Incandescence at the summit was visible in a 5 June webcam image, and Strombolian activity was periodically visible on 9 June. At 0900 on 10 June the Alert Level was raised to 3 (the second lowest level on a scale of 1-4) and the public was warned to stay outside of the exclusion zone, defined as a 3-km radius around Laki-laki crater, 4 km to the NNE, and 5 km on the NE flanks. Strombolian activity continued on 10 June and several ash emissions rose 600-1,000 m above the summit. Gray ash emissions rose 300-600 m above the summit and drifted SW and W on 11 June.

The lava flows on the NE flank advanced 20 m during 29 February-9 April to a total length of 4.34 km; the advancement was due to gravitational forces and not eruptive activity, and no additional advancement had been recorded since.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Reykjanes
IMO reported that the eruption that began on 29 May near Sundhnúk, NE of Sýlingarfell, within the Reykanes volcanic system, continued through 11 June. The lava field had an estimated area of 8.6 square kilometers and the erupted volume was about 36 million cubic meters based on a 3 June drone survey. The estimated flow rate during 29 May-3 June was 30 cubic meters per second. Only one crater was active by the morning of 4 June, and the flow rate had likely decreased. Lava flows advanced NW towards Sýlingarfell and S towards Hagafell on 5 June. On 7 June flows continued to advance N towards Sýlingarfell, causing the flow field in that area to thicken, and continued on expand N and W. Deformation data indicated that deflation had ceased. A small collapse of the crater wall was visible according to a news source. The rate of lava advancement increased during 7-8 June in an area N of Sýlingarfell, towards Grindavíkurvegur. By 1030 on 8 June lava had crossed Grindavík road just to the N of where work was being done to close a gap in an earthen barrier. Lava also moved along the barrier and in some areas flowed over the top. The flows had slowed by noon, reaching 800 m from hot water pipelines. Inflation began to be detected sometime during 8-9 June though the rate of uplift had not been determined. The eruption continued during 9-11 June. Lava continued to accumulate in a lava pond just SE of Sýlingarfell. Notable sulfur dioxide pollution from the eruption was measured in many parts of Reykjavík and in the W part of South Iceland. Vog was noticeable in the W part of the country during the morning of 11 June.
Sources: Icelandic Meteorological Office (IMO), Icelandic National Broadcasting Service (RUV)
Report for San Cristobal
The Washington VAAC reported that ash plumes from San Cristóbal were visible in webcam images at around 1500 and 1700 on 7 June rising above the summit and drifting N. The plumes were not identified in satellite images due to weather conditions. According to a news report the ash plume rose 1 km above the summit.
Sources: Washington Volcanic Ash Advisory Center (VAAC), Centinela35
Report for Taal
In a special report, PHIVOLCS noted that sulfur dioxide emissions were elevated at Taal, averaging 11,072 tonnes per day (t/d) on 6 June. Sulfur dioxide emissions have been continuously released since 2021 and averaged 8,294 t/d during 2024. Hazy or voggy conditions were reported at Alitagtag, Tingloy, San Nicolas, Laurel, Taysan, Lobo, and Batangas City, and were observed during field surveys in Agoncillo, Lemery, Taal, Santa Teresita, Alitagtag, Cuenca, Lipa, Balete, and Malvar.

Daily steam-and-gas emissions that were sometimes voluminous rose 1.9-2.4 km above the rim of Main Crater and drifted NNW, NW, SW, and SSE based on webcam images during 6-11 June. Two volcanic earthquakes were recorded during the week. During 7-8 June there were five periods of volcanic tremor lasting as short as three minutes and as long as 10 hours and eight minutes. A two-minute phreatic event was also recorded. Upwelling gases and hot fluids in the lake were observed during 8-10 June. Sulfur dioxide emissions averaged 2,470 t/d on 10 June. The Alert Level remained at 1 (on a scale of 0-5), and PHIVOLCS reminded the public that the entire Taal Volcano Island was a Permanent Danger Zone (PDZ) and to take extra precaution around Main Crater and along the Daang Kastila fissure.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
Report for Aira
JMA reported ongoing eruptive activity at Minamidake Crater (Aira Caldera’s Sakurajima volcano) during 27 May-3 June with nighttime crater incandescence. Sulfur dioxide emissions were high, averaging 2,000 tons per day on 30 May. The Alert Level remained at 3 (on a 5-level scale), and the public was warned to stay 1 km away from both craters.
Source: Japan Meteorological Agency (JMA)
Report for Dukono
PVMBG reported that the eruption at Dukono was ongoing during 5-11 June. Gray-and-white ash plumes rose 100-1,600 m above the summit and drifted E and W on most days; no emissions were observed on 7 June. The Alert Level remained at Level 2 (on a scale of 1-4), and the public was warned to remain outside of the 3-km exclusion zone.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Ebeko
KVERT reported that moderate explosive activity was ongoing at Ebeko during 30 May-6 June. According to volcanologists in Severo-Kurilsk (Paramushir Island, about 7 km E), explosions during 31 May and 1-2 June generated ash plumes that rose as high as 2 km (6,600 ft) a.s.l. and drifted SE and S. A thermal anomaly was identified in satellite images on 30 May, 1 June, and 3 June; on other days either no activity was observed or weather conditions prevented views. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are UTC; specific events are in local time where noted.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Great Sitkin
AVO reported that slow lava effusion in Great Sitkin’s summit crater continued during 5-11 June. Seismicity was low with few daily small earthquakes. Slightly elevated surface temperatures at the summit were identified in satellite images during 4-6 June and diffuse steam emissions were visible in webcam images during 5-6 June. Weather clouds sometimes obscured satellite and webcam views. The Volcano Alert Level remained at Watch (the third level on a four-level scale) and the Aviation Color Code remained at Orange (the third color on a four-color scale).
Source: US Geological Survey Alaska Volcano Observatory (AVO)
Report for Lewotolok
PVMBG reported that the eruption at Lewotolok continued during 5-11 June. Daily white steam-and-gas plumes rose as high as 600 m above the summit and drifted multiple directions. On 11 June white-and-gray ash plumes rose 100-400 m and drifted W and E. Summit incandescence and incandescent material being ejected at the summit were visible in webcam images during the week. The Alert Level remained at 3 (on a scale of 1-4) and visitors and residents of Lamawolo, Lamatokan, and Jontona were warned to stay 2 km away from the vent and 3 km away from the vent on the S and SE flanks.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Marapi
PVMBG reported that eruptive activity at Marapi (on Sumatra) was ongoing during 5-11 June. White gas-and-steam plumes rose 200-300 m above the summit and drifted in multiple directions during 5-6 and 8 June. White-and-gray ash plumes rose 300-750 m above the summit and drifted multiple directions during 7 and 9-10 June. One of the ash plumes, recorded at 0810 on 9 June, was gray-to-brown and rose 300 m and drifted SE. Emissions were not visible on 11 June. The Alert Level remained at 3 (on a scale of 1-4), and the public was warned to stay 4.5 km away from the active crater.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Merapi
BPPTKG reported that the eruption at Merapi (on Java) continued during 31 May-6 June. Seismicity had decreased compared to the previous week. The SW lava dome produced 141 lava avalanches that traveled as far as 1.9 km down the upper part of the Bebeng drainage on the SW flank. Three pyroclastic flows also descended the Bebeng, traveling as far as 1 km. Morphological changes to the SW lava dome were due to continuing effusion and collapses of material. The volume of the SW dome was an estimated 2,335,200 cubic meters and the dome in the main crater was stable at an estimated 2,362,800 cubic meters based on a 6 June drone survey. The highest temperature of the SW dome was around 243 degrees Celsius, lower than the previous measurement. The Alert Level remained at 3 (on a scale of 1-4), and the public was warned to stay 3-7 km away from the summit, based on location.
Source: Balai Penyelidikan dan Pengembangan Teknologi Kebencanaan Geologi (BPPTKG)
Report for Nyiragongo
Thermal anomalies on Nyiragongo’s crater floor were identified in satellite images on 31 May and 5 June.
Source: Copernicus
Report for Reventador
In a special report issued on 10 June IG-EPN reported that the number and amplitude of explosions at Reventador had increased beginning on 21 March and remained elevated, based on seismic data. Additionally, during this period a slight increase in sulfur dioxide emissions was identified in satellite data. The daily explosion count peaked on 26 May and again on 9 June. IG noted that the characteristics of the ash emissions had not changed and remained at normal levels with plumes typically rising 1 km above the crater rim; plumes to 1.6 km indicate higher activity, and 2 km is considered notable. Since 2 May morphological changes in the crater area reflected the generation of small pyroclastic flows that descended the S and SE flanks but did not impact residents or infrastructure. Explosive activity during 2-3 June created a small ravine on the SSE flank and a 125-m-wide depression at the crater rim, at the head of the ravine. Incandescence at the SE part of the crater became visible and persisted. Subsequent pyroclastic flows were channeled down the ravine, reaching the base of the cone.

During 1-6 June the Washington VAAC issued 584 reports of ash emissions, or an average of two reports per day, according to IG. The plumes rose 400-2,800 m above the crater rim, averaging 1 km high. There were 62-85 daily explosions during 7-11 June. Weather clouds prevented views during 7-9 June. Ash plumes during 10-11 June rose 700-800 m and drifted WNW and NW.
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
Report for Semeru
PVMBG reported that eruptive activity continued at Semeru. Continuous tiltmeter and GPS data showed that inflation was detected in May and seismic data showed that magma continued to rise to the surface. During 5-11 June white-and-gray ash plumes that were sometimes dense rose 300-800 m above the summit and drifted S and SW on all days except for 7 June. Several additional daily eruptive events were recorded by the seismic network, though plumes were not visually confirmed. During 0000-0600 on 10 June there were 28 lava avalanches that descended the Kobokan drainage as far as 2.5 km. The Alert Level remained at 3 (the third highest level on a scale of 1-4). The public was warned to stay at least 5 km away from the summit in all directions, 13 km from the summit to the SE, 500 m from the banks of the Kobokan drainage as far as 17 km from the summit, and to avoid other drainages 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 Sheveluch
KVERT reported that thermal anomalies over both the new and older lava domes at Sheveluch were identified in satellite images during 1-2 and 4-6 June; the domes were obscured by weather clouds on 31 May and 3 June. The Aviation Color Code remained at Orange (the third level on a four-color scale). Dates are based on UTC times; specific events are in local time where noted.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Suwanosejima
JMA reported that eruptive activity at Suwanosejima's Ontake Crater continued during 3-10 June and produced volcanic plumes that rose as high as 700 m above the crater rim. Crater incandescence was observed nightly in webcam images. No explosions were recorded. The Alert Level remained at 2 (on a 5-level scale) and the public was warned to stay at least 1.5 km away from the crater.
Source: Japan Meteorological Agency (JMA)