All times are local unless otherwise stated.

Pavlof (United States) | 4 June-10 June 2014 | New Activity / Unrest Cite this Report
Pavlof Aleutian Ridge Volcanic Arc	AVO reported that the Strombolian eruption at Pavlof continued during 3-10 June. On 3 June the FAA webcam showed a high steam plume rising above a vent on the NE flank and lower-level ash from pyroclastic flows on the N flank. During 3-4 June seismicity remained unchanged and persistent elevated surface temperatures were detected in satellite images. A steam plume with minor amounts of ash but rich in sulfur dioxide drifted 100 km W. Incandescence from lava fountaining was visible in webcam images on 4 June. According to a news article, flights in and out of Cold Bay and Unalaska were canceled on 4 June, affecting about 200 people. Two strong explosions were detected by the seismic network at 0205 and 0245 on 5 June. Lightning was detected by the World Wide Lightning Location Network indicating the presence of ash; satellite images did not detected ash above the meteorological cloud tops at about 8.5 km (28,000 ft) a.s.l. A third event was detected at 0844. The level of activity declined during 5-6 June; ash emissions appeared to be greatly reduced although cloud cover continued to obscure satellite views. Elevated surface temperatures were observed in mostly cloudy satellite images during 8-9 June. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch. Sources: US Geological Survey Alaska Volcano Observatory (AVO), Alaska Public Media
San Miguel (El Salvador) | 4 June-10 June 2014 | New Activity / Unrest Cite this Report
San Miguel Central America Volcanic Arc	According to SNET, the Ministerio de Medio Ambiente y Recursos Naturales (MARN) reported that during 4-5 June seismicity at San Miguel declined dramatically. Small dark gray plumes of gas and ash rose 200 m above the crater. During 7-8 June gas-and-ash emissions continued; observers noted 1 mm of ashfall on the N flank. Source: Servicio Nacional de Estudios Territoriales (SNET)
Sangeang Api (Indonesia) | 4 June-10 June 2014 | New Activity / Unrest Cite this Report
Sangeang Api Sunda Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that during 4-7 June ash plumes from Sangeang Api rose to an altitude of 3 km (10,000 ft) a.s.l. and drifted 45-110 km W and NW. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Santa Maria (Guatemala) | 4 June-10 June 2014 | New Activity / Unrest Cite this Report
Santa Maria Central America Volcanic Arc	On 6 June INSIVUMEH reported that the Santiaguito Observatory (OBSAN) was seriously affected by a large lahar that descended the Nima I river drainage on the S flank of Santa María's Santiaguito lava-dome complex. The lahar came in waves, 5-9 m high, was 80 m wide, and carried blocks up to 5 m in diameter. It overtopped the river banks and flowed to a nearby farm. The staff working at OBSAN had to evacuate; some important scientific equipment was lost and damaged. On 7 June a lahar descended the Samala river, a tributary of the Nima I river, carrying blocks up to 1 m in diameter, and lahars in the Nima I drainage had a sulfur odor. During 7-8 June slow-moving lava flows descended the E flank. Explosions during 8-9 June generated ash plumes that rose 500 m and drifted SW. Large avalanches in the collapsed area were incandescent at night. During 9-10 June explosions generated white and gray plumes that rose 500 m, the lava flows on the E flank produced avalanches, and Domo del Brujo began degassing. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Zhupanovsky (Russia) | 4 June-10 June 2014 | New Activity / Unrest Cite this Report
Zhupanovsky Eastern Kamchatka Volcanic Arc	KVERT reported that an eruption at Zhupanovsky began on 6 June, producing an ash plume that rose to an altitude of 6 km (19,900 ft) a.s.l., as suggested by Tokyo VAAC and UHPP notices. Cloud cover prevented views from satellite. The Aviation Color Code was raised to Yellow. Satellite images on 9 June showed ash plumes rising to altitudes of 3-4 km (9,800-13,100 ft) a.s.l. and drifting 60 km E. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Aira (Japan) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Aira Ryukyu Volcanic Arc	JMA reported that during 19-23 May two explosions from Showa Crater at Aira Caldera’s Sakurajima volcano ejected tephra that landed as far as 1,300 m away. Incandescence from the crater was detected at night during 19-20 May. The Alert Level remained at 3 (on a scale of 1-5). The Tokyo VAAC reported that on 6 and 9 June plumes rose to altitudes of 2.1-5.5 km (7,000-18,000 ft) a.s.l. Plumes drifted NW on 9 June. Sources: Japan Meteorological Agency (JMA), Tokyo Volcanic Ash Advisory Center (VAAC)
Bagana (Papua New Guinea) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Bagana Solomon Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that on 10 June an ash plume from Bagana rose to an altitude of 2.4 km (8,000 ft) a.s.l. and drifted over 35 km SW. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Batu Tara (Indonesia) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Batu Tara Sunda Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that on 6 June an ash plume from Batu Tara rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted 150 km NW. During 7-9 June ash plumes rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted over 35 km NW and W. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Chirinkotan (Russia) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Chirinkotan Kuril Volcanic Arc	SVERT reported that an eruption at Chirinkotan had begun on 24 May; thermal anomalies and gas emissions sometimes containing ash were detected in satellite images. On 5 June seldom and weak thermal anomalies suggested cooling lava flows. The Aviation Color Code was lowered to Green. Source: Sakhalin Volcanic Eruption Response Team (SVERT)
Chirpoi (Russia) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Chirpoi Kuril Volcanic Arc	In a 5 June report, SVERT summarized activity at Snow, a volcano of Chirpoi, over the previous two years: an effusive eruption started on 10 November 2012, producing steam-and-gas emissions and thermal anomalies thorough April 2013; the volcano was quiet; steam-and-gas emissions and thermal anomalies were again detected starting on 12 July 2013, suggesting a new period of lava effusion. Weak thermal anomalies during 2-4 June implied cooling lava flows. The Aviation Color Code was lowered to Green. Source: Sakhalin Volcanic Eruption Response Team (SVERT)
Dukono (Indonesia) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Dukono Halmahera Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that on 4 June an ash plume from Dukono rose to an altitude of 2.1 km (7,000 ft) a.s.l. and drifted 150 km N. The next day an ash plume rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted 55 km NW. On 9 June ash plumes rose to altitudes of 1.5-1.8 km (5,000-6,000 ft) a.s.l. and drifted 25-30 km NW. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Fuego (Guatemala) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Fuego Central America Volcanic Arc	INSIVUMEH reported that on 5 June lahars descended Fuego's Honda (E), El Jute (SE), Ceniza (SSW), and Santa Teresa (S) drainages, carrying blocks as large as 1.5 m in diameter. Explosions during 5-6 June generated ash plumes that rose 250-350 m and drifted 8-10 km W and NW. Explosions during 8-10 June generated ash plumes that rose 350-750 m and drifted 8-10 km N. Incandescent material ejected 100 m above the crater landed on the flank and formed avalanches. On 9 June lahars in the El Jute and Las Lajas drainages carried blocks up to 1.5 m in diameter. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Karymsky (Russia) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Karymsky Eastern Kamchatka Volcanic Arc	KVERT reported that Strombolian and weak Vulcanian activity continued at Karymsky during 30 May-6 June. Satellite images detected no activity or were obscured by clouds. The Aviation Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Kilauea (United States) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Kilauea Hawaiian-Emperor Hotspot Volcano Group	During 4-10 June HVO reported that the circulating lava lake occasionally rose and fell in the deep pit within Kilauea's Halema'uma'u Crater. Gas emissions remained elevated. The plume from the vent continued to deposit variable amounts of ash, spatter, and Pele's hair onto nearby areas; smaller particles may have been dropped several kilometers away. At Pu'u 'O'o Crater, glow emanated from spatter cones on the N, SE, and S portions of the crater floor, and from a small lava lake in the NE spatter cone. On 22 May geologists mapped the farthest point of activity from the Kahauale’a 2 lava flow, 8.4 km NE of Pu’u 'O'o, and on 6 June they mapped four small breakouts as far as 6.5 km from Pu’u 'O'o. Smoke plumes rising from forested areas suggested advancing breakout flows. Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Merapi (Indonesia) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Merapi Sunda Volcanic Arc	PVMBG reported that during 30 May-5 June seismicity at Merapi fluctuated at normal levels and declined as compared to the previous two weeks. Deformation measurements showed no significant changes. Solfatara plumes rose 400 m and drifted W on 31 May. The Alert Level remained at 1 (on a scale of 1-4). Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Sheveluch (Russia) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Sheveluch Eastern Kamchatka Volcanic Arc	KVERT reported that during 30 May-6 June lava-dome extrusion onto Shiveluch’s SE flank was accompanied by ash explosions, incandescence, hot avalanches, and fumarolic activity. Satellite images detected a thermal anomaly over the dome on 31 May and 1 and 3 June. The Aviation Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Shishaldin (United States) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Shishaldin Aleutian Ridge Volcanic Arc	AVO reported that, although cloud cover frequently obscured views of Shishaldin during 4-9 June, seismicity indicated that the low-level eruption continued. Elevated surface temperatures at the summit were detected in mostly cloudy satellite images during 7-9 June. 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) | 4 June-10 June 2014 | Continuing ActivityCite this Report
Ubinas Central Andean Volcanic Arc	In a press release from 5 June, IGP's Observatorio Volcanologico de Arequipa (IGP-OVA) and Observatorio Vulcanológico del INGEMMET (OVI) reported that an Alert Level Orange continued for residents affected by the Ubinas eruption. Residents of Querapi and Tonohaya remained evacuated. The report noted that a significant and continuous release of ash emissions and gasses were observed during the previous days. Gas-and-ash plumes observed during 5-7 June rose 0.2-2 km above the crater. Minor ashfall was reported in Lloque and Yungas during 6-7 June. Sources: Instituto Geofísico del Perú (IGP), Instituto Geológico Minero y Metalúrgico (INGEMMET)

Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 20,652 individual reports over 1,244 weeks (average of 17 per week) on 338 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.

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)