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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 2 March-8 March 2022
Name Location Eruption Start Date Report Status
Fuego South-Central Guatemala 2002 Jan 4 New
Kirishimayama Kyushu (Japan) New
Langila New Britain (Papua New Guinea) 2015 Oct 22 (?) New
Manam Northeast of New Guinea 2014 Jun 29 New
Davidof Aleutian Islands (USA) Continuing
Descabezado Grande Central Chile Continuing
Great Sitkin Andreanof Islands (USA) 2021 May 25 Continuing
Karymsky Eastern Kamchatka (Russia) 2020 Apr 1 Continuing
Kilauea Hawaiian Islands (USA) 2021 Sep 29 Continuing
Merapi Central Java 2020 Dec 31 Continuing
Pavlof Alaska Peninsula, Alaska 2021 Aug 5 Continuing
Popocatepetl Mexico 2005 Jan 9 Continuing
Santa Maria Southwestern Guatemala 1922 Jun 22 Continuing
Semeru Eastern Java 2014 Apr 1 ± 15 days Continuing
Semisopochnoi Aleutian Islands (USA) 2021 Feb 2 ± 2 days Continuing
Sheveluch Central Kamchatka (Russia) 1999 Aug 15 Continuing
Suwanosejima Ryukyu Islands (Japan) 2004 Oct 23 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 17,900 individual reports over 1,120 weeks (average of 16 per week) on 321 different volcanoes.

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

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Agung Copahue Ijen Lewotolok Pinatubo Spurr
Ahyi Cotopaxi Iliamna Little Sitkin Planchon-Peteroa St. Helens
Aira Cuicocha Iliwerung Llaima Poas Stromboli
Akan Cumbal Inielika Lokon-Empung Popocatepetl Sulu Range
Alaid Dabbahu Ioto Lonquimay Purace Sumbing
Alu-Dalafilla Davidof Irazu Lopevi Puyehue-Cordon Caulle Sundoro
Ambae Dempo Iya Machin Rabaul Suretamatai
Ambang Descabezado Grande Izu-Torishima Makushin Raikoke Suwanosejima
Ambrym Dieng Volcanic Complex Jackson Segment Maly Semyachik Ranakah Taal
Anatahan Dukono Kaba Manam Raoul Island Tair, Jebel at
Aniakchak Ebeko Kadovar Manda Hararo Rasshua Takawangha
Antillanca Volcanic Complex Ebulobo Kama'ehuakanaloa Marapi Raung Talang
Antuco Edgecumbe Kambalny Maroa Redoubt Tambora
Apoyeque Egon Kanaga Martin Reventador Tanaga
Arenal Ekarma Kanlaon Masaya Reykjanes Tandikat-Singgalang
Asamayama Epi Karangetang Maule, Laguna del Rincon de la Vieja Tangkoko-Duasudara
Askja Erebus Karkar Mauna Loa Rinjani Tangkuban Parahu
Asosan Erta Ale Karthala Mayon Ritter Island Tara, Batu
Atka Volcanic Complex Etna Karymsky McDonald Islands Rotorua Telica
Augustine Etorofu-Yakeyama [Grozny Group] Kasatochi Melimoyu Ruang Tenerife
Avachinsky Eyjafjallajokull Katla Merapi Ruapehu Tengger Caldera
Awu Fernandina Katmai Midagahara Ruiz, Nevado del Three Sisters
Axial Seamount Fogo Kavachi Misti, El Sabancaya Tinakula
Azul, Cerro Fonualei Kelimutu Miyakejima Sakar Tofua
Azumayama Fournaise, Piton de la Kelud Momotombo Salak Tokachidake
Bagana Fourpeaked Kerinci Monowai San Cristobal Tolbachik
Balbi Fuego Ketoi Montagu Island San Miguel Toliman
Bamus Fujisan Kharimkotan Moyorodake [Medvezhia] San Vicente Tongariro
Banda Api Fukutoku-Oka-no-Ba Kick 'em Jenny Mutnovsky Sangay Tungurahua
Bardarbunga Galeras Kie Besi Myojinsho Sangeang Api Turrialba
Barren Island Galunggung Kikai Nabro Santa Ana Ubinas
Batur Gamalama Kilauea Negra, Sierra Santa Maria Ugashik-Peulik
Bezymianny Gamkonora Kirishimayama Negro, Cerro Sao Jorge Ukinrek Maars
Bogoslof Gareloi Kita-Ioto Nightingale Island Sarigan Ulawun
Brava Gaua Kizimen Nishinoshima Sarychev Peak Unnamed
Bristol Island Gorely Klyuchevskoy Nisyros Saunders Unnamed
Bulusan Great Sitkin Kolokol Group Novarupta Savo Veniaminof
Calbuco Grimsvotn Koryaksky NW Rota-1 Semeru Villarrica
Callaqui Guagua Pichincha Krakatau Nyamulagira Semisopochnoi Vulcano
Cameroon Guallatiri Krummel-Garbuna-Welcker Nyiragongo Seulawah Agam West Mata
Campi Flegrei del Mar di Sicilia Guntur Krysuvik-Trolladyngja Okataina Sheveluch Westdahl
Cayambe Hachijojima Kuchinoerabujima Okmok Shishaldin Whakaari/White Island
Chachadake [Tiatia] Hakoneyama Kurikomayama Ontakesan Simbo Witori
Chaiten Heard Kusatsu-Shiranesan Oraefajokull Sinabung Wolf
Chiginagak Hekla Kverkfjoll Osorno Sinarka Yakedake
Chikurachki Helgrindur La Palma Pacaya Siple Yasur
Chiles-Cerro Negro Hierro Lamington Pagan Sirung Zaozan [Zaosan]
Chillan, Nevados de Hokkaido-Komagatake Lamongan Palena Volcanic Group Slamet Zavodovski
Chirinkotan Home Reef Langila Paluweh Snaefellsjokull Zhupanovsky
Chirpoi Hood Lanin Panarea Soputan Zubair Group
Ciremai Huaynaputina Lascar Papandayan Sorikmarapi
Cleveland Hudson, Cerro Lateiki Parker Sotara
Colima Huila, Nevado del Lengai, Ol Doinyo Pavlof Soufriere Hills
Colo Hunga Tonga-Hunga Ha'apai Leroboleng Pelee Soufriere St. Vincent
Concepcion Ibu Lewotobi Peuet Sague South Sarigan Seamount
 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 Fuego
In a series of special bulletins, INSIVUMEH summarized increased activity at Fuego during 6-8 March that culminated in multiple pyroclastic flows and evacuations. A new period of effusion had begun on 5 March, resulting in a 300-m-long lava flow in the Ceniza drainage on the SSW flank. Explosions were weak to moderate in intensity, incandescent pulses were visible, and avalanches descended the Ceniza valley. Staff at the Observatorio Vulcanológico del Volcán de Fuego (OVFGO) in Panimaché I (8 km SW) noted that Strombolian activity intensified at around 1800 on 6 March. Incandescent material was ejected 200 m high and ash plumes rose along avalanches that traveled down the Ceniza and Trinidad (S) drainages. Rumbling sounds became more intense and frequent. By around 0930 on 7 March lava flows were 400 and 200 m long in the Ceniza and Santa Teresa (W) ravines, respectively. Incandescent material was ejected 100-200 m high and avalanches descended the Ceniza, Trinidad, and Santa Teresa.

By the afternoon activity again significantly increased based on both seismic and acoustic data as well as reports from observers at OVFGO and Observatorio Vulcanológico del Volcán de Agua (OVAGU). RSAM values increased just after 1200, peaking at a value just under 8,000, and notable pyroclastic flows were observed from OVFGO descending the Ceniza drainage at 1300. According to CONRED about 370 people were evacuated from Panimaché I and San Pedro Yepocapa (8 km NW). During the next hour larger, and more significant and frequent pyroclastic flows descended the Ceniza, sometimes spilling over the banks of the drainage. Ash fell in San Pedro Yepocapa and in other areas downwind. RSAM values decreased around 1400 but remained high. Pyroclastic flows continued to descend the drainage into the evening, and rumbling sounds, weak to moderate in intensity, were constantly audible. Weather clouds prevented clear views of the upper flanks. Ashfall was reported in Panimaché I and II, Morelia (9 km SW), Santa Sofía (12 km SW), Yucales, El Porvenir 8 km ENE), and Sangré de Cristo (8 km WSW). Between 1900-2200 RSAM values significantly increased and reached a peak value of around 14,000. Weather clouds cleared allowing for observations of the summit and upper flanks; pyroclastic flows continued to descend the Ceniza and avalanches and possible smaller pyroclastic flows traveled towards the Las Lajas drainage on the SE flank. A sulfur odor was reported in areas near the volcano and ash plumes drifted as far as 100 km NW and 40 km W and SW. Activity progressively declined during the morning of 8 March, with decreased effusion and eruption sounds; RSAM values declined by 0300 and remained low though 0735.
Sources: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH), Coordinadora Nacional para la Reducción de Desastres (CONRED)
Report for Kirishimayama
JMA reported an increase in volcanic earthquakes just below Shinmoedake (Shinmoe peak, a stratovolcano of the Kirishimayama volcano group). A total of 17 events were recorded during 1-2 March, prompting JMA to raise the Alert Level to 2 (on a scale of 1-5) on 2 March. No changes were seen at the volcano during a field visit that same day. Volcanic earthquakes persisted, with 5-12 events per day recorded through 7 March. Emissions had risen no higher than 30 m above the crater rim since 1 January, and fumarolic plumes continued to rise no higher than 100 m from a fissure on the W flank. During a field survey conducted on 4 March at the base of the volcano, sulfur dioxide emissions were below the detectable limit and no changes to area hot springs were observed.
Source: Japan Meteorological Agency (JMA)
Report for Langila
The Darwin VAAC reported that on 6 March an ash plume from Langila rose 3 km (10,000 ft) a.s.l. and drifted SE. The plume had dissipated within an hour. On 8 March an ash plume rose to 3.7 km (12,000 ft) a.s.l. and drifted NW. Ash was no longer visible in satellite images within three hours.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Manam
RVO reported that a small pyroclastic flow descending Manam’s flank was visually observed and recorded in webcam images at 0911 on 8 March. Minor ash emissions drifting NW were occasionally visible throughout the day. RSAM values sharply increased at 1900 coincident with escalating activity. An intense Strombolian phase at Southern Crater was observed during 1910-2030, characterized by loud roaring and rumbling heard on the mainland (22 km SW), bright summit incandescence, and ash emissions. The Alert Level was raised to Stage 3. The Darwin VAAC estimated that by 1950 the ash plume had risen as high as 15.2 km (50,000 ft) a.s.l. and drifted W. The plume had detached from the summit by 2050 and dissipated by 0050 on 9 March. Following the more intense eruptive phase, activity at Southern Crater was quiet and only white vapor emissions were visible. Observatory staff conducted a field visit the next day and noted no reports of roof collapses nor casualties in areas to the NW; vegetation including food crops were covered with ash.
Source: Rabaul Volcano Observatory (RVO)
Report for Davidof
According to AVO the earthquake swarm that began on 24 January in the vicinity at Davidof continued at least through 8 March with a few small earthquakes recorded each day by seismometers on Little Sitkin (15 km E). The earthquakes were shallow (less than 10 km deep) and the largest recorded during the last 7-10 days was a M 3.9. The swarm was either related to tectonic processes or volcanic unrest. The volcano is also monitored by satellite and remote infrasound and lightning networks. 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 Descabezado Grande
According to the Buenos Aires VAAC a diffuse cloud of resuspended ash from Descabezado Grande was visible in a satellite data on 8 March.
Source: Buenos Aires Volcanic Ash Advisory Center (VAAC)
Report for Great Sitkin
AVO reported that slow lava effusion at Great Sitkin likely continued during 2-8 March and very low seismicity persisted. Elevated surface temperatures were periodically identified in satellite images. A possible steam plume rising above the weather clouds was visible during 4-5 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 Karymsky
KVERT reported that a thermal anomaly over Karymsky was visible in satellite images during 25-28 February. The volcano was obscured by clouds on the other days during 1-4 March. The Aviation Color Code remained at Orange (the second highest 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 Kilauea
HVO reported that lava effusion at the vent of the main cone in the lower W wall of Kilauea’s Halema`uma`u Crater continued at variable rates during 2-8 March. After a brief pause effusion from the W vent resumed at about 0100 on 2 March and continued through 7 March. Lava from the vent traveled S and W, into the western active lava lake. Lava occasionally oozed out from the margins of the lake during 3-6 March, particularly along the E and N margins. A pause in effusion began in the evening of 7 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 Merapi
BPPTKG reported no significant morphological changes at Merapi’s summit lava dome during 25 February-3 March but there had been collapses at the SW dome, located just below the SW rim. Seismicity remained at high levels. As many as 73 lava avalanches traveled a maximum of 2 km down the Bebeng drainage on the SW flank. 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.
Source: Balai Penyelidikan dan Pengembangan Teknologi Kebencanaan Geologi (BPPTKG)
Report for Pavlof
AVO reported that the eruption at Pavlof was ongoing during 2-8 March. Small explosions were detected on most days. Lava effusion likely continued from a vent just E of the summit, possibly sending lava flows a short distance down the NE flank, though weather clouds often obscured views. Elevated surface temperatures were often identified in satellite images. A high-resolution satellite image acquired during 5-6 March showed a developing spatter cone in the E crater, as well as no active lava flows nor widespread ash deposits on the flanks. 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 Popocatepetl
During an overflight of Popocatépetl on 23 February, Instituto de Geofísica de la Universidad Nacional Autónoma de México (UNAM) and CENAPRED scientists noted that the inner crater dimensions were similar to those recorded in November 2021. The inner crater was 390-410 m in diameter and 160-200 m deep; the crater floor was covered in tephra and the remains of recent lava domes. Each day during 1-8 March there were 9-50 steam-and-gas emissions with diffuse ash rising from the crater and drifting W and NE. An explosion was recorded at 0959 on 4 March. The Alert Level remained at Yellow, Phase Two (the middle level on a three-color scale).
Source: Centro Nacional de Prevencion de Desastres (CENAPRED)
Report for Santa Maria
INSIVUMEH reported that the eruption at Santa María’s Santiaguito lava-dome complex continued during 1-8 March. Incandescence from Caliente crater and the lava flows on the W and SW flanks was visible nightly. Avalanches generated by both lava effusion and collapsing material descended the W, SW, and S flanks, often reaching the base of the dome. Periodically the avalanches produced ash along their paths that fell on to the flanks or dissipated near the volcano.
Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Report for Semeru
PVMBG reported that the eruption at Semeru continued during 2-8 March, causing the observatory to issue several VONAs mostly for ash plumes. Ground observers noted an ash plume at 0540 on 3 March that rose vertically 4.2 km above the summit. At 2004 later that day a pyroclastic flow originating from the end of a lava flow descended the Kobokan drainage on the SE flank; an ash plume was not visible. Ash plumes at 0742 on 5 March, and at 0603 and 0734 on 6 March, rose 400-500 m above the summit and drifted N and NW. Ash plumes at 0534 and 0735 on 7 March rose 1 km and drifted SSE and NW, respectively. More ash plumes at 0541 and 0758 on 8 March rose 400 m and drifted SW and S. 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 1-8 March. Local seismic and infrasound instruments recorded daily small explosions. Weather clouds often prevented satellite and webcam views of the volcano, though explosions likely produced low ash clouds from the summit and they were visually confirmed during 4-8 March. 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 Sheveluch
KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 25 February-4 March. The Aviation Color Code remained at Orange (the second highest 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 eruption plumes at Suwanosejima's Ontake Crater rose as high as 2.4 km during 28 February-7 March and blocks were ejected as far as 800 m from the crater. Three explosions were recorded and crater incandescence was visible nightly. Ashfall was reported in areas as far as 5 km from the vent including in Toshima village (3.5 km SSW). 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 Wolf
IG reported that the eruption at Wolf continued during 1-8 March. Daily thermal alert counts, as many as 125, indicated active and advancing lava flows on the SSE flank.
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG)