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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 June-7 June 2022
Name Location Eruption Start Date Report Status
Bulusan Luzon (Philippines) New
Reykjanes Reykjanes Peninsula New
Ulawun New Britain (Papua New Guinea) New
Bezymianny Central Kamchatka (Russia) 2010 May 21 (?) Continuing
Dukono Halmahera 1933 Aug 13 Continuing
Etna Sicily (Italy) 2013 Sep 3 Continuing
Great Sitkin Andreanof Islands (USA) 2021 May 25 Continuing
Ibu Halmahera 2008 Apr 5 Continuing
Karymsky Eastern Kamchatka (Russia) 2020 Apr 1 Continuing
Kilauea Hawaiian Islands (USA) 2021 Sep 29 Continuing
Lewotolok Lembata Island 2020 Nov 27 Continuing
Manam Northeast of New Guinea 2014 Jun 29 Continuing
Merapi Central Java 2020 Dec 31 Continuing
Pagan Mariana Islands (USA) Continuing
Pavlof Alaska Peninsula, Alaska 2021 Aug 5 Continuing
Rincon de la Vieja Costa Rica 2021 Jun 28 Continuing
Ruapehu North Island (New Zealand) Continuing
Sabancaya Peru 2016 Nov 6 Continuing
Semeru Eastern Java 2014 Apr 1 ± 15 days Continuing
Semisopochnoi Aleutian Islands (USA) Continuing
Sheveluch Central Kamchatka (Russia) 1999 Aug 15 Continuing
Suwanosejima Ryukyu Islands (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 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 Bulusan
At 1037 on 5 June a phreatic eruption at Bulusan produced a gray steam-rich plume, somewhat visible through weather cloud cover, that rose at least 1 km above the summit and drifted W. The event lasted about 17 minutes and was visible from Juban (Sorsogon Province). Ashfall was reported in Puting Sapa, Añog, Guruyan, Catanusan, Buraburan, Bacolod, and Sangkayon in Juban, and Bolos in Irosin, Sorsogon Province. Residents of Añog, Guruyan, and Catanusan also reported rumbling sounds and a sulfur odor. PHIVOLCS raised the Alert Level to 1 (on a scale of 0-5) and reminded the public not to enter the 4-km-radius Permanent Danger Zone (PDZ) nor the 2 km Extended Danger Zone (EDZ) on the SE flank. After the eruption gas emissions rose from the main crater and, for the first time this year, from the NW summit vent.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
Report for Reykjanes
On 2 June IMO reported that the rate of uplift on the Reykjanes Peninsula had significantly decreased, and seismicity had been declining, with only about 150 earthquakes recorded the previous day. The Aviation Color Code was lowered to Green because the data indicated no magma movement.
Source: Icelandic Meteorological Office (IMO)
Report for Ulawun
RVO reported that at 0820 on 2 June a small eruption at Ulawun produced dense gray ash plumes that rose about 3 km above the summit and drifted NW. The elevated activity lasted 10-15 minutes. Minor ashfall was reported in areas downwind, including in Ulamona Mission and on Lolobau Island. Seismicity increased during the event, then dropped back to lower levels. Diffuse white plumes were visible rising from the summit the next day.
Sources: Rabaul Volcano Observatory (RVO), Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Bezymianny
KVERT reported that after a notable explosive eruption phase occurred at Bezymianny on 28 May (local date), eruptive activity characterized by strong fumarolic emissions, lava-dome incandescence, and hot avalanches continued through 3 June. The Aviation Color Code was raised to 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 Dukono
Based on satellite and wind model data, and information from ground observers, the Darwin VAAC reported that during 1-7 June ash plumes from Dukono rose to 2.4 km (8,000 ft) a.s.l. and drifted NE, NW, W, and SW. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km exclusion zone.
Sources: Darwin Volcanic Ash Advisory Centre (VAAC), Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Etna
INGV reported that during 30 May-5 June the fissure located at the upper part of Etna’s Valle del Bove, between 2,700 and 2,900 m elevation, continued to produce lava flows at a variable rate. The flows branched and overlapped, reaching 1,900 m elevation by 5 June. Strombolian activity at Southeast Crater (SEC) varied in intensity and frequency, producing ash emissions that drifted SSE; the most intense activity occurred during 1-3 June. Ash plumes rose to around 5 km (16,400 ft) a.s.l. and drifted S on 3 June. On 7 June a new fissure opened at the base of the N wall of the Valle del Bove, in the Serracozzo area, at 1,900-1,950 m elevation. The fissure produced a lava flow that traveled a few tens of meters.
Source: Sezione di Catania - Osservatorio Etneo (INGV)
Report for Great Sitkin
AVO reported that the eruption at Great Sitkin continued during 31 May-7 June, though weather clouds sometimes hindered observations. Surface temperatures were occasionally identified in satellite data, consistent with lava effusion. A few small earthquakes were detected on a few of the days. 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 31 May-7 June. Daily gray-and-white ash plumes of variable densities generally rose 200-800 m above the summit and drifted in multiple directions. An eruptive event at 1116 on 6 June produced a dense gray ash plume that rose 4 km above the summit and drifted W. 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 Karymsky
KVERT reported that a thermal anomaly over Karymsky was identified in satellite images during 27 May-3 June. 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 continued to effuse from a vent in the lower W wall of Kilauea’s Halema`uma`u Crater during 31 May-7 June, entering the lava lake and flowing onto the crater floor. The surface of the lava lake was continuously active all week, and the lake level was relatively stable, dropping and then rising 6 m. Nearly-continuous breakouts of lava occurred along the margins of the lake. 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
PVMBG reported that the eruption at Lewotolok continued during 1-7 June. Daily white-and-gray emissions rose as high as 1.3 km above the summit and drifted in multiple directions. The summit crater was often incandescent, and the lava flow on the E flank was incandescent during 1-4 June, based on photos in the reports. 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 Manam
The eruption at Manam was ongoing. The Darwin VAAC reported that during 1-3 and 5 June ash plumes rose to 2.4-3 km (8,000-10,000 ft) and drifted NW, W, and SW, based on satellite and webcam images and information from RVO.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Merapi
BPPTKG reported that the eruption at Merapi continued during 27 May-2 June. The heights and morphologies of the SW lava dome and the central lava dome were unchanged from the previous week, and seismicity remained at high levels. As many as 101 lava avalanches, reaching a maximum distance of 1.8 km, traveled down the Bebeng drainage on the SW flank. One pyroclastic flow also traveled 1.8 km down the Bebeng drainage. Seismicity remained high. 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 Pagan
The U.S. Geological Survey reported that a possible sulfur dioxide emission from Pagan was detected on 31 May. The Aviation Color Code and the Volcano Alert Level remained at Unassigned. There are no ground-based instruments, so Pagan is monitored with satellite imagery, distal geophysical data, and mariner reports.
Source: US Geological Survey
Report for Pavlof
AVO reported that the eruption at a vent on Pavlof’s upper E flank was ongoing during 31 May-7 June, and seismic tremor persisted. A short lava flow from the vent was observed during 31 May-1 June, and daily elevated surface temperatures identified in satellite images during the remainder of the week were consistent with continuing activity. 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 continuing eruptive activity at Rincón de la Vieja characterized by small phreatic explosions. A minor emission was possibly recorded on 4 June, though it could not be visually confirmed due to darkness. An eruptive event at 0804 on 6 June produced a steam plume that rose about 3 km above the summit. Sulfur dioxide from the plume was detected by an instrument located to the S. Another event was recorded at 1204 later that day, though a plume was not visible due to weather conditions.
Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)
Report for Ruapehu
On 7 June GeoNet reported that elevated unrest at Ruapehu continued, though at reduced levels. During the previous week volcanic tremor levels had decreased from moderate to weak, and lake water temperatures had declined to 28 degrees Celsius. Weather conditions prevented gas measurement flights during the previous few weeks. The Volcanic Alert Level remained at 2 (on a scale from 0-5) and the Aviation Color Code remained at Yellow.
Source: GeoNet
Report for Sabancaya
Instituto Geofísico del Perú (IGP) reported moderate levels of activity at Sabancaya during 30 May-6 June with a daily average of nine explosions. Gas-and-ash plumes rose as high as 1.5 km above the summit and drifted E and SE. As many as six thermal anomalies originating from the lava dome in the summit crater were identified in satellite data. Minor inflation continued to be detected near Hualca Hualca (4 km N). The Alert Level remained at Orange (the second highest level on a four-color scale) and the public were warned to stay outside of a 12-km radius.
Source: Instituto Geofísico del Perú (IGP)
Report for Semeru
PVMBG reported that the eruption at Semeru continued during 1-7 June. A few eruptive events (recorded at 0701 and 0710 on 1 June, and at 1306 on 6 June) produced ash plumes that rose 300-500 m above the summit and drifted N, W, and SW. Occasionally on the other days white plumes rose 100-600 m and drifted in multiple directions. The Alert Level remained at 3 (on a scale of 1-4). The public was warned to stay at least 5 km away from the summit, and 500 m away from Kobokan drainages within 17 km of the summit, and 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 31 May-6 June. Seismicity remained elevated with intermittent tremor; one explosion was recorded during 31 May-1 June and multiple small explosions were recorded during 4-6 June. Weather clouds mostly prevented satellite and webcam views. Minor ash emissions rising to low heights were visible in webcam images during 6-7 June. 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 27 May-3 June; explosions, hot avalanches, and lava-dome extrusion continued. 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 27 explosions were recorded at Suwanosejima's Ontake Crater during 30 May-6 June. Eruption plumes rose as high as 1.6 km above the crater rim and material was ejected as far as 600 m from the vent. Crater incandescence was visible at night. The Alert Level remained at 3 and the public was warned to stay 2 km away from the crater.
Source: Japan Meteorological Agency (JMA)