All times are local unless otherwise stated.

Colima (Mexico) | 13 November-19 November 2013 | New Activity / Unrest Cite this Report
Colima Trans-Mexican Volcanic Belt	The Washington VAAC reported that at 0730 on 17 November a possible ash emission from Colima produced a plume that drifted almost 20 km E. Source: Washington Volcanic Ash Advisory Center (VAAC)
Etna (Italy) | 13 November-19 November 2013 | New Activity / Unrest Cite this Report
Etna Sicily Volcanic Province	INGV reported that weak Strombolian explosions from Etna’s New Southeast Crater (NSEC) were visible on 13 November. INGV-Osservatorio Etneo staff visited the area the next day and noted that explosions were heard one to three times per minute, and during times of good visibility no pyroclastic material was ejected. Sporadic ejections of incandescent pyroclastics were observed after nightfall. Early on 16 November Strombolian activity gradually intensified; however, only pulsating puffs of vapor, but no ash, were produced. On 17 November a new paroxysmal eruptive episode was characterized by violent Strombolian activity and pulsating lava fountains, emission of lava flows that traveled S, ESE, and NE, and the formation of an eruption column charged with pyroclastic material that drifted NE. The episode ended with a long series of powerful explosions and loud bangs heard tens of kilometers away. Strombolian activity continued until the late evening; after nightfall, a small lava flow issued from an effusive vent located on the lower E flank of the NSEC cone. Source: Sezione di Catania - Osservatorio Etneo (INGV)
Merapi (Indonesia) | 13 November-19 November 2013 | New Activity / Unrest Cite this Report
Merapi Sunda Volcanic Arc	According to news articles, a phreatic eruption at Merapi on 18 November produced an ash plume that rose 2 km above the crater and caused ashfall in areas as far as 60 km E. About 600 families from the Glagaharjo village gathered at evacuation assembly points, while others on the W flank evacuated then returned to their homes hours later. Source: Jakarta Post
Sinabung (Indonesia) | 13 November-19 November 2013 | New Activity / Unrest Cite this Report
Sinabung Sunda Volcanic Arc	Based on webcam data and satellite images, the Darwin VAAC reported that during 13-14 November an ash plume from Sinabung rose to an altitude of 3.7 km (12,000 ft) a.s.l. and drifted almost 150 km NW and W. According to a news article, a pyroclastic flow traveled 1.2 km down the SE flank on 14 November, prompting more evacuations from villages near the base of the volcano. The article noted that more than 7,000 people had been evacuated from 10 villages. An explosion observed with the webcam on 18 November produced an ash plume that rose to an altitude of 7.6 km (25,000 ft) a.s.l. About 30 minutes later an ash plume also visible in satellite images rose to an altitude of 11.3 km (37,000 ft) a.s.l. and drifted 65 km W. Four hours later satellite images showed ash plumes at an altitude of 9.1 km (30,000 ft) a.s.l. to the W of Sinabung and at an altitude of 4.6 km (15,000 ft) a.s.l. over the crater. On 19 November the webcam recorded an ash plume that rose to an altitude of 4.6 km (15,000 ft) a.s.l. over the crater. A news article stated that later that night that an ash plume rose to an altitude of 10 km (32,800 ft) a.s.l. A news article from 20 November noted that volcanologists updated the hazard map for Sinabung. The second-tier disaster-prone area, previously defined as a radius of 2-3 km from Sinabung’s crater, was expanded to 4-5 km. Sources: Darwin Volcanic Ash Advisory Centre (VAAC), Jakarta Post, Jakarta Post, Jakarta Post
Yasur (Vanuatu) | 13 November-19 November 2013 | New Activity / Unrest Cite this Report
Yasur Vanuatu Volcanic Arc	On 19 November, the Vanuatu Geohazards Observatory reported that a new phase of ash emissions from Yasur began on 3 November. The intensity of the explosive activity remained low; therefore the Alert Level remained at 1 (on a scale of 0-4). Source: Vanuatu Meteorology and Geohazards Department (VMGD)

Bagana (Papua New Guinea) | 13 November-19 November 2013 | Continuing ActivityCite this Report
Bagana Solomon Volcanic Arc	Based on analyses of satellite imagery and wind data, the Darwin VAAC reported that during 14-18 November ash plumes from Bagana rose to an altitude of 2.7 km (9,000 ft) a.s.l. and drifted 35-110 km W and SW. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Chirinkotan (Russia) | 13 November-19 November 2013 | Continuing ActivityCite this Report
Chirinkotan Kuril Volcanic Arc	SVERT reported that during 13-15 November a thermal anomaly over Chirinkotan was observed, as well as steam-and-gas emissions during 14-15 November. The Aviation Color Code remained at Yellow. Source: Sakhalin Volcanic Eruption Response Team (SVERT)
Chirpoi (Russia) | 13 November-19 November 2013 | Continuing ActivityCite this Report
Chirpoi Kuril Volcanic Arc	SVERT reported that a thermal anomaly from Snow, a volcano of Chirpoi, was detected in satellite images during 13-15 November. The Aviation Color Code remained at Yellow. Source: Sakhalin Volcanic Eruption Response Team (SVERT)
Copahue (Chile-Argentina) | 13 November-19 November 2013 | Continuing ActivityCite this Report
Copahue Andean Southern Volcanic Arc	Based on ODVAS webcam views and satellite images, the Buenos Aires VAAC reported that on 15 November a low-level diffuse plume from Copahue drifted almost 40 km NW. Later that night a thermal anomaly was detected by satellite and light from a full moon allowed webcam views of a possible ash emission. The next day steam-and-gas emissions were observed with the webcam. The Alert Level remained at Yellow. Source: Buenos Aires Volcanic Ash Advisory Center (VAAC)
Fuego (Guatemala) | 13 November-19 November 2013 | Continuing ActivityCite this Report
Fuego Central America Volcanic Arc	On 18 November INSIVUMEH reported that during the previous week explosions from Fuego produced ash plumes that rose 450-750 m and drifted W and SW. Some of the explosions generated rumbling noises, shock waves detected within 15 km, and rattled structures in Panimaché (8 km SW), Panimaché II (8 km SW), Morelia (9 km SW), Santa Sofía (12 km SW), and Sangre de Cristo (8 km WSW). A 600-m-long lava flow was active on the SE flank, and block avalanches that descended the Ceniza drainage (SSW) reached vegetated areas. Ashfall was reported in Panimaché, Morelia, and Sangre de Cristo. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Karymsky (Russia) | 13 November-19 November 2013 | Continuing ActivityCite this Report
Karymsky Eastern Kamchatka Volcanic Arc	KVERT reported that moderate seismic activity at Karymsky was detected during 8-15 November. Satellite images detected a daily thermal anomaly on the volcano, possibly indicating weak Vulcanian and Strombolian activity. Ash plumes drifted 140 km SE and E during 9-10 November. The Aviation Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Kilauea (United States) | 13 November-19 November 2013 | Continuing ActivityCite this Report
Kilauea Hawaiian-Emperor Hotspot Volcano Group	During 13-19 November HVO reported that the circulating lava lake occasionally rose and fell in the deep pit within Kilauea's Halema'uma'u Crater. The plume from the vent continued to deposit variable amounts of ash, spatter, and Pele's hair onto nearby areas. At Pu'u 'O'o Crater, glow emanated from spatter cones on the N and S portions of the crater floor. On 18 November the southernmost spatter cone produced a lava flow that after a few hours burst out in a dome fountain; lava spread over much of the S crater floor before stopping about 30 minutes later. The 7.1-km-long Kahauale’a 2 lava flow, fed by the NE spatter cone, was active with scattered break-out flows and burned the forest N of Pu'u 'O'o. Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Manam (Papua New Guinea) | 13 November-19 November 2013 | Continuing ActivityCite this Report
Manam Bismarck Volcanic Arc	RVO reported that both Manam's Southern Crater and Main Crater were quiet during 1 October-15 November. White vapor emissions rose from Southern Crater and on some days were slightly bluish. Light gray ash clouds and bright incandescence were visible on 31 October. Main Crater only produced white vapor plumes. Source: Rabaul Volcano Observatory (RVO)
Rabaul (Papua New Guinea) | 13 November-19 November 2013 | Continuing ActivityCite this Report
Rabaul Bismarck Volcanic Arc	RVO reported that Rabaul caldera's Tavurvur cone was quiet during 1-12 November. At 0516 on 13 November a moderate explosion generated a dense billowing ash cloud that rose 1 km above the crater and drifted NW. A few more explosions continued after that, at irregular intervals; notably on 14 November at 0738, 0851, 1308, 2044, and on 15 November at 1903. Ash plumes from these events also drifted NW. During 1-15 November seismicity was very low, except for events associated with the explosions. Deformation measurements showed slight inflation of the central part of the caldera; the long-term inflationary trend continued. Source: Rabaul Volcano Observatory (RVO)
Sheveluch (Russia) | 13 November-19 November 2013 | Continuing ActivityCite this Report
Sheveluch Eastern Kamchatka Volcanic Arc	KVERT reported that during 8-15 November several strong explosions from Shiveluch generated ash plumes that rose to a maximum altitude of 7 km (24,600 ft) a.s.l. Viscous lava continued to effuse onto the N and NE flanks of the lava dome, accompanied by hot avalanches, incandescence, ash explosions, and fumarolic activity. A daily thermal anomaly was detected in satellite images. The Aviation Color Code remained at Orange. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Ulawun (Papua New Guinea) | 13 November-19 November 2013 | Continuing ActivityCite this Report
Ulawun Bismarck Volcanic Arc	RVO reported that during 1 October-15 November activity at Ulawun was low; small volumes of white vapor and gray and gray-brown ash plumes rose 100 m above the crater and drifted S. Seismicity was low with RSAM values fluctuating between 100 and 150 units throughout the period. Source: Rabaul Volcano Observatory (RVO)

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)