All times are local unless otherwise stated.

Agung | 27 June-3 July 2018 | New Activity / Unrest Cite this Report
Agung Bali	PVMBG reported that seismicity at Agung continued to be dominated by low-frequency events. The number of earthquakes increased from 15/day on 25 June to 69/day on 28 June; harmonic tremor emerged on 27 June, and at 2221 an event generated an ash plume that rose 2 km above the crater rim and drifted W. Gas-and-ash emissions were continuous during 28-29 June, rising around 2 km and drifting W and SW, and incandescence was reflected in the plume; satellite data confirmed that high-temperature (1,200 degrees Celsius) lava flowed onto the crater floor. The intensity of the thermal anomaly on 29 June was the largest recorded at Agung since the beginning of the eruption on 21 November 2017. BNPB noted that the ash plumes on 28 June caused some airlines to cancel flights to Bali, and ashfall was reported in several villages on Bangli. The International Gusti Ngurah Rai (IGNR) airport (60 km SW) in Denpasar, the Blimbing Sari Airport (128 km W) in Banyuwangi, and the Noto Hadinegoro Airport (200 km W) in Jember closed for portions of the day on 29 June. Lava continued to effuse, and by 1 July the estimated volume of new lava was 4-5 million cubic meters making the total volume erupted since 21 November 2017 around 27-28 million cubic meters (50% of the total crater volume). The height difference between the lowest part of the crater rim (SW side) and the highest part of the lava surface (in the center of the crater) was 85-90 m. Satellite data showed that the intensity of the thermal anomaly decreased during 28 June-2 July, though still remained at a high level. At 2104 on 2 July an explosion generated an ash plume that rose 7-9 km above the crater rim, and ejected incandescent lava as far as 2 km onto the flanks. News articles noted that the deposits caused forest fires on the upper flanks, and that the event prompted about 700 people to evacuate. An event at 0413 on 3 July generated an ash plume that rose around 2 km. The Alert Level remained at 3 (on a scale of 1-4) and the exclusion zone was stable at a 4-km radius. Sources: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM), Badan Nacional Penanggulangan Bencana (BNPB), Associated Press
Great Sitkin | 27 June-3 July 2018 | New Activity / Unrest Cite this Report
Great Sitkin Andreanof Islands (USA)	AVO reported that after the brief explosion at Great Sitkin on 10 June seismicity gradually declined to background levels. On 27 June AVO lowered the Volcano Alert Level to Normal and the Aviation Color Code to Green. Source: US Geological Survey Alaska Volcano Observatory (AVO)
Ibu | 27 June-3 July 2018 | New Activity / Unrest Cite this Report
Ibu Halmahera	Based on satellite images and model data, the Darwin VAAC reported that on 27 June an ash plume from Ibu rose to 1.8 km (6,000 ft) a.s.l. and drifted W. The Alert Level remained at 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: Darwin Volcanic Ash Advisory Centre (VAAC)
Krakatau | 27 June-3 July 2018 | New Activity / Unrest Cite this Report
Krakatau Sunda Strait	PVMBG reported that white plumes were seen rising as high as 100 m above Anak Krakatau during infrequent periods of clear weather from 27 June to 3 July. Incandescence from the summit was observed at night during 1-2 July. The Alert Level remained at 2 (on a scale of 1-4); residents and visitors were warned not to approach the volcano within 1 km of the crater. Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Sierra Negra | 27 June-3 July 2018 | New Activity / Unrest Cite this Report
Sierra Negra Isla Isabela (Galapagos)	Based on video and photos shared by Parque Nacional Galápagos staff, IG reported that the eruption at Sierra Negra that began at 1340 on 26 June originated from several fissures on the N flank and one within the caldera. The flank flows reached the sea between Elizabeth Bay and Punta Morena. A gas-and-ash plume rose about 10.5 km and drifted W. Seismic and acoustic data indicated a gradual decrease but continuing activity on 27 June. A small seismic event was recorded at 1552 on 1 July, followed by at least four hours of tremor. At 1600 national park staff observed lava flows on the NW flank. Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
Yasur | 27 June-3 July 2018 | New Activity / Unrest Cite this Report
Yasur Vanuatu	The Vanuatu Meteorology and Geo-hazards Department reported some stronger explosions at Yasur during 27-28 June. Based on webcam images the Wellington VAAC reported that on 29 June intermittent, low-level ash plumes rose to an altitude of 1.8 km (6,000 ft) a.s.l. and drifted NW. The Alert Level remained at 2 (on a scale of 0-4). VGO reminded residents and tourists that hazardous areas were near and around the volcanic crater, within a 395-m-radius permanent exclusion zone, and that volcanic ash and gas could reach areas impacted by trade winds. Sources: Vanuatu Meteorology and Geohazards Department (VMGD), Wellington Volcanic Ash Advisory Center (VAAC)

Aira | 27 June-3 July 2018 | Continuing ActivityCite this Report
Aira Kyushu (Japan)	JMA reported that on 29 June a very small eruption occurred at Minamidake crater (at Aira Caldera’s Sakurajima volcano). An explosion at 2319 on 1 July produced an ash plume that rose 400 m above the crater rim and ejected material 500 m away. Crater incandescence was visible at night on 2 July. The Alert Level remained at 3 (on a 5-level scale). Source: Japan Meteorological Agency (JMA)
Ambae | 27 June-3 July 2018 | Continuing ActivityCite this Report
Ambae Vanuatu	The Vanuatu Meteorology and Geo-hazards Department reported that an ash plume from a cone in Ambae’s Lake Voui was visible on 1 July. The report warned residents that ashfall was expected in areas to the NW and W. The Alert Level remained at 2 (on a scale of 0-5), and the report reminded residents to stay at least 2 km away from the active crater. Source: Vanuatu Meteorology and Geohazards Department (VMGD)
Bezymianny | 27 June-3 July 2018 | Continuing ActivityCite this Report
Bezymianny Central Kamchatka (Russia)	KVERT reported that a thermal anomaly over Bezymianny was identified in satellite images during 22-29 June. The Aviation Color Code remained at Yellow. Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Cleveland | 27 June-3 July 2018 | Continuing ActivityCite this Report
Cleveland Chuginadak Island (USA)	AVO reported that unrest at Cleveland continued during 27 June-3 July, though nothing significant was detected in seismic or infrasound data. Elevated surface temperatures were identified in satellite images during 29 June-2 July; the thermal anomaly extended SW downslope in the crater consistent with a lava flow. The Aviation Color Code remained at Orange and the Volcano Alert Level remained at Watch. Source: US Geological Survey Alaska Volcano Observatory (AVO)
Dukono | 27 June-3 July 2018 | Continuing ActivityCite this Report
Dukono Halmahera	Based on PVMBG observations and satellite data, the Darwin VAAC reported that during 27 June-3 July ash plumes from Dukono rose to altitudes of 1.8-2.1 km (6,000-7,000 ft) a.s.l. and drifted NW and W. Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Ebeko | 27 June-3 July 2018 | Continuing ActivityCite this Report
Ebeko Paramushir Island (Russia)	Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 26-27 June that sent ash plumes as high as 3 km (10,000 ft) a.s.l. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Fuego | 27 June-3 July 2018 | Continuing ActivityCite this Report
Fuego South-Central Guatemala	INSIVUMEH and CONRED reported that 2-7 weak explosions per hour at Fuego generated ash plumes that rose as high as 650 m above the crater rim and drifted W and SW during 27-29 June and 1-3 July. Ashfall was reported on 27 June in areas downwind including Sangre de Cristo and Yepocapa. Avalanches of material descended the S, SW, and W flanks (Santa Teresa, Las Lajas, El Jute, and Cenizas drainages). According to CONRED, as of 3 July, the number of people confirmed to have died due to the 3 June pyroclastic flows was 113, and 197 remained missing. In addition, 12,823 remained evacuated. Sources: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH), Coordinadora Nacional para la Reducción de Desastres (CONRED)
Kilauea | 27 June-3 July 2018 | Continuing ActivityCite this Report
Kilauea Hawaiian Islands (USA)	HVO reported that the eruption at Kilauea’s Lower East Rift Zone (LERZ) and at Halema`uma`u Crater continued during 27 June-3 July. Lava fountaining and spatter was concentrated at Fissure 8, feeding lava flows that spread through Leilani Estates and Lanipuna Gardens subdivisions, and built out the coastline where the fast-moving flow entered the ocean in the area of the former Kapoho Bay. Fissure 22 produced a few short lava flows during 30 June-3 July. Inward slumping of the crater rim and walls of Halema`uma`u continued, adjusting from the withdrawal of magma and subsidence of the summit area. Steam plumes rose from areas in the crater as well as from circumferential cracks adjacent to the crater. Explosions from collapse events occurred almost daily, producing gas-and-ash-poor plumes that rose less than 1.5 km (5,000 ft) a.s.l. and drifted SW. Fountaining at Fissure 8 continued; lava fountains rarely rose higher than the 55-m-high spatter cone. Pele's hair and other volcanic glass from the fountaining fell within Leilani Estates. The fountains continued to feed the fast-moving lava flow that traveled NE, and then SE around Kapoho Crater, and into the ocean. Occasional overflows sent small flows down the sides of the channel. Lava entered the ocean on the S side of the flow front mainly through an open channel, but also along a 1-km-long area marked with billowing laze plumes. A thermal map showed that on 29 June the lava channel had crusted over about 0.8 km inland from the ocean entry, with lava moving beneath the crust. Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Kirishimayama | 27 June-3 July 2018 | Continuing ActivityCite this Report
Kirishimayama Kyushu (Japan)	JMA reported that at Shinmoedake (Shinmoe peak), a stratovolcano of the Kirishimayama volcano group, an event at 1534 on 27 June generated a plume that rose 2.2 km above the crater rim. The report stated that since the beginning of May the rate of deformation had slowed, and tiltmeter data showed no change. In addition, sulfur dioxide emissions had decreased from 1,000 tons/day on mid-March to 80 tons/day on 1 June. On 28 June the Alert Level was lowered to 2 (on a scale of 1-5). Source: Japan Meteorological Agency (JMA)
Klyuchevskoy | 27 June-3 July 2018 | Continuing ActivityCite this Report
Klyuchevskoy Central Kamchatka (Russia)	On 29 June KVERT reported that activity at Klyuchevskoy had decreased, with the last ash plume visible on 15 June. Gas-and-steam emissions continued. The Aviation Color Code was lowered to Yellow (the second lowest level on a four-color scale). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Mayon | 27 June-3 July 2018 | Continuing ActivityCite this Report
Mayon Luzon (Philippines)	PHIVOLCS reported that white steam plumes from Mayon rose 750 m above the crater rim on 30 June and drifted NE, N, NW, and SW. On 1 July white plumes drifted down the flanks. A short-lived event at 1234 produced a gray gas plume. Crater incandescence was visible at night. The Alert Level remained at 2 (on a 0-5 scale) and PHIVOLCS reminded residents to stay away from the 6-km-radius Permanent Danger Zone and the 7-km Extended Danger Zone on the SSW and ENE flanks. Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
Pacaya | 27 June-3 July 2018 | Continuing ActivityCite this Report
Pacaya South-Central Guatemala	INSIVUMEH reported that during 28-29 June and 1-3 July Strombolian explosions at Pacaya’s Mackenney Crater ejected material as high as 30 m above the crater rim. White gas plumes drifted S. Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Reventador | 27 June-3 July 2018 | Continuing ActivityCite this Report
Reventador Ecuador	IG stated that an explosion at Reventador was detected at 1116 on 2 July, producing an ash plume that was reported by the Washington VAAC to have risen 3 km above the crater rim. Ashfall was reported in the Cayambe (57 km WNW) and in the town of Juan Montalvo. Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
Sabancaya | 27 June-3 July 2018 | Continuing ActivityCite this Report
Sabancaya Peru	Observatorio Vulcanológico del Sur del IGP (OVS-IGP) and Observatorio Vulcanológico del INGEMMET (OVI) reported that explosions at Sabancaya averaged 24 per day during 25 June-1 July. Hybrid earthquakes were infrequent and low magnitude. Gas-and-ash plumes rose as high as 2.5 km above the crater rim and drifted 30 km S, SE, and E. The MIROVA system detected six thermal anomalies, and on 21 June the sulfur dioxide gas flux was high at 3,000 tons/day. The report noted that the public should not approach the crater within a 12-km radius. Sources: Instituto Geológico Minero y Metalúrgico (INGEMMET), Instituto Geofísico del Perú (IGP)
Sheveluch | 27 June-3 July 2018 | Continuing ActivityCite this Report
Sheveluch Central Kamchatka (Russia)	KVERT reported that a weak thermal anomaly over Sheveluch was identified in satellite images during 23-29 June. The Aviation Color Code remained at Orange (the second highest level on a four-color scale). Source: Kamchatkan Volcanic Eruption Response Team (KVERT)

Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 20,019 individual reports over 1,216 weeks (average of 16 per week) on 332 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.

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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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 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)