All times are local unless otherwise stated.

Barren Island (India) | 3 June-9 June 2015 | New Activity / Unrest Cite this Report
Barren Island Andaman Volcanic Back-Arc	Based on analysis of satellite imagery and wind data, the Darwin VAAC reported that during 5-7 June ash plumes from Barren Island rose to altitudes of 2.4-3 km (8,000-10,000 ft) a.s.l. and drifted 35-45 km NE and E. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Concepcion (Nicaragua) | 3 June-9 June 2015 | New Activity / Unrest Cite this Report
Concepcion Central America Volcanic Arc	In a 9 June statement, INETER noted that 38 gas explosions had been detected in a 24-hour period, bringing the total number to 1,675 detected by the network since an unspecified date of increased activity. Source: Instituto Nicaragüense de Estudios Territoriales (INETER)
Cotopaxi (Ecuador) | 3 June-9 June 2015 | New Activity / Unrest Cite this Report
Cotopaxi Andean Northern Volcanic Arc	IG reported that the seismic network at Cotopaxi had detected increases since mid-April; 628 local earthquakes were detected in April and 3,000 events were detected in May. Very-long-period earthquakes were recorded in May, especially during the last week, located in the N and NE parts of the cone at depths of 3 and 14 km. Sulfur dioxide emissions increased on 20 May, possibly from sporadic emissions becoming more continuous, and were 2,500-3,000 tons/day by the end of May. Baseline values were 500 tons/day. Slight inflation was detected by N and NE inclinometers. Crater fumarolic activity increased, with plumes sometimes visible from Quito (55 km N). Climbers indicated a very intense sulfur dioxide odor on the N part of the cone during 22-23 May. Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
Karangetang (Indonesia) | 3 June-9 June 2015 | New Activity / Unrest Cite this Report
Karangetang Sangihe Volcanic Arc	On 5 June BNPB reported that activity at Karangetang remained high; a total of 339 people (106 families) remained displaced. Source: Badan Nacional Penanggulangan Bencana (BNPB)
Kuchinoerabujima (Japan) | 3 June-9 June 2015 | New Activity / Unrest Cite this Report
Kuchinoerabujima Ryukyu Volcanic Arc	JMA reported that during 3-8 June white plumes rose 100-400 m above Shindake Crater's rim at Kuchinoerabujima. Volcanic earthquakes had declined on 30 May but continued to periodically occur. The Alert Level remained at 5 (the highest level on a 1-5 scale). Source: Japan Meteorological Agency (JMA)
Nevado del Ruiz (Colombia) | 3 June-9 June 2015 | New Activity / Unrest Cite this Report
Nevado del Ruiz Andean Northern Volcanic Arc	Based on webcam views and information from the Manizales Observatory, the Washington VAAC reported that on 6 June an ash emission from Nevado del Ruiz rose 800 m above the summit and drifted WNW. Weather clouds prevented satellite views. Source: Washington Volcanic Ash Advisory Center (VAAC)
Pacaya (Guatemala) | 3 June-9 June 2015 | New Activity / Unrest Cite this Report
Pacaya Central America Volcanic Arc	INSIVUMEH reported that during 7-8 June white and blue fumarolic plumes rose above Pacaya's Mackenney cone. Ash emissions were observed about every 3-4 hours, and the seismic network detected signals indicating collapsed within the crater along with ash emissions. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
San Cristobal (Nicaragua) | 3 June-9 June 2015 | New Activity / Unrest Cite this Report
San Cristobal Central America Volcanic Arc	According to INETER about 41 gas explosions occurred at San Cristóbal between 1354 and 1625 on 6 June. The strongest one occurred at 1355, and generated an ash plume that rose 200 m above the crater rim and drifted SE. After the short period of increased activity, San Cristóbal returned to a calm state. Source: Instituto Nicaragüense de Estudios Territoriales (INETER)
Sinabung (Indonesia) | 3 June-9 June 2015 | New Activity / Unrest Cite this Report
Sinabung Sunda Volcanic Arc	On 5 June BNPB reported that the Alert-Level increase for Sinabung on 2 June prompted 2,727 people (677 families) from the S and SE flanks to evacuate. PVMBG reported that foggy weather often prevented visual observations during 5-10 June, except for a few clearer periods on some days. White plumes rose at most 1 km above the crater, and lava flows on the flanks were incandescent as far as 2 km S and SE. Pyroclastic flows traveled 0.7-1.3 km daily down the S and SE flanks. Ash plumes from pyroclastic flows rose as high as 1 km during 5-6 and 10 June. The Alert Level remained at 4 (on a scale of 1-4). Sources: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Badan Nacional Penanggulangan Bencana (BNPB)
Telica (Nicaragua) | 3 June-9 June 2015 | New Activity / Unrest Cite this Report
Telica Central America Volcanic Arc	On 6 June INETER reported that during the previous day six small gas explosions occurred at Telica, for a total of 806 explosions since an unspecified time of increased activity. A report on 8 June stated that no seismic events had been detected during the previous 72 hours. Source: Instituto Nicaragüense de Estudios Territoriales (INETER)

Aira (Japan) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Aira Ryukyu Volcanic Arc	JMA reported 14 explosions during 1-5 June from Showa Crater at Aira Caldera’s Sakurajima volcano, some that ejected tephra as far as 1,300 m, and incandescence from the crater that was occasionally visible at night. Explosive eruptions on 4 June generated small-scale pyroclastic flows that descended the E flank of Showa Crater. The Alert Level remained at 3 (on a 5-level scale). Source: Japan Meteorological Agency (JMA)
Bagana (Papua New Guinea) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Bagana Solomon Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that during 4-6 June ash plumes from Bagana rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 45-65 km SW, W and NE. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Chirpoi (Russia) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Chirpoi Kuril Volcanic Arc	SVERT reported that satellite images over Snow, a volcano of Chirpoi, detected a thermal anomaly during 1-2 June. Cloud cover obscured views during 3-8 June. The Aviation Color Code remained at Yellow. Source: Sakhalin Volcanic Eruption Response Team (SVERT)
Colima (Mexico) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Colima Trans-Mexican Volcanic Belt	Based on satellite images and webcam views, the Washington VAAC reported that on 3 June an ash plume from Colima rose to an altitude of 5.2 km (17,000 ft) a.s.l. and drifted WSW. Source: Washington Volcanic Ash Advisory Center (VAAC)
Dukono (Indonesia) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Dukono Halmahera Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that during 3-4 and 6 June ash plumes from Dukono rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted 35-100 km W, NW, N, and NE. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Fuego (Guatemala) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Fuego Central America Volcanic Arc	INSIVUMEH reported that during 4-5 June Strombolian activity at Fuego ejected incandescent material 300 m above the crater. Gray plumes rose 1.1 km and drifted 14 km S and SW; ashfall was reported in communities within 11 km, including Panimaché l and ll, Morelia, Sangre de Cristo, and areas in Yepocapa. Lava flows traveled 600 and 1,200 m down the Santa Teresa and Trinidad drainages, respectively. Avalanches of material from the lava-flow fronts descended the drainages. In a special report from 6 June, INSIVUMEH noted that after 30 hours the period of Strombolian activity had ended. Three lava flows, 600, 700, and 1,300 m in length, were no longer active. The report noted that this episode was the fourth for the year. Deformation to the crater had occurred, with two cinder cones visible from several areas. During 6-7 June white plumes rose 150 m and drifted 10 km S and SW. Pulses of incandescence rose 100 m. Explosions during 7-8 June produced ash plumes that rose 750 m and drifted W and S. Ashfall was recorded in areas within a distance of 10 km. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Karymsky (Russia) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Karymsky Eastern Kamchatka Volcanic Arc	KVERT reported moderate activity at Karymsky likely continued during 29 May-5 June. Satellite images detected a thermal anomaly on 30 May. The Aviation Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Kilauea (United States) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Kilauea Hawaiian-Emperor Hotspot Volcano Group	HVO reported that seismicity beneath Kilauea's summit, upper East Rift Zone, and Southwest Rift Zone was at background levels during 3-9 June. The lava lake continued to be active in the deep pit within Halema'uma'u Crater (now called the Overlook vent); the lake level was about 62 m below the crater floor on 9 June. The June 27th NE-trending lava flow continued to be active with surface flows within 8 km NE of Pu'u 'O'o. Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Ruang (Indonesia) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Ruang Sangihe Volcanic Arc	PVMBG reported that seismicity at Ruang decreased from 14 March through 2 June. Emissions were unobserved during periods of clear weather from 1 May through 2 June. The Alert Level was lowered to 1 (on a scale of 1-4) on 3 June. Residents and tourists were warned not to approach the active craters. Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Sheveluch (Russia) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Sheveluch Eastern Kamchatka Volcanic Arc	KVERT reported that during 29 May-5 June lava-dome extrusion onto Sheveluch’s N flank was accompanied by fumarolic activity. A thermal anomaly was detected in satellite images on 30 May. The Aviation Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Shishaldin (United States) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Shishaldin Aleutian Ridge Volcanic Arc	AVO reported that seismicity at Shishaldin continued to be elevated over background levels during 3-9 June, indicating that low-level eruptive activity confined to the summit crater likely continued. Elevated surface temperatures were periodically detected in satellite images, and minor steaming was recorded by the webcam. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch. Source: US Geological Survey Alaska Volcano Observatory (AVO)
Ubinas (Peru) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Ubinas Andean Central Volcanic Arc	Instituto Geofísico del Perú (IGP) Observatorio Volcanológico del Sur (OVS) reported that during 2-8 June long-period earthquakes continued at a high rate, in occurrence and magnitude. A large number of observed ash emissions were related to periods of tremor and swarms of long-period earthquakes. Ash emissions rose 1.2 km above the crater base and drifted in multiple directions. Source: Instituto Geofísico del Perú (IGP)
Villarrica (Chile) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Villarrica Andean Southern Volcanic Arc	On 8 June, OVDAS-SERNAGEOMIN reported that activity at Villarrica continued the gradual decline observed in recent weeks. The Alert Level was lowered to Yellow (the second lowest level on a four-color scale) and the public was warned to stay outside of a 3-km radius around the crater and away from drainages. Source: Servicio Nacional de Geología y Minería (SERNAGEOMIN)
Zhupanovsky (Russia) | 3 June-9 June 2015 | Continuing ActivityCite this Report
Zhupanovsky Eastern Kamchatka Volcanic Arc	On 9 June KVERT reported that the moderate explosive eruption at Zhupanovsky continued; a webcam and satellite images showed an ash plume rising to an altitude of 6 km (19,700 ft) a.s.l. and drifting 30 km S. The Aviation Color Code was raised to Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 20,322 individual reports over 1,229 weeks (average of 17 per week) on 336 different volcanoes.

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

 News Feeds and Google Placemarks

 Criteria & Disclaimers

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.

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.

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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)