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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 13 July-19 July 2022
Name Country Volcanic Region Eruption Start Date Report Status
Ebeko Russia Kuril Volcanic Arc New
Turrialba Costa Rica Central America Volcanic Arc New
Aira Japan Ryukyu Volcanic Arc 2017 Mar 25 Continuing
Great Sitkin United States Aleutian Ridge Volcanic Arc 2021 May 25 Continuing
Kama'ehuakanaloa United States Hawaiian-Emperor Hotspot Volcano Group Continuing
Karymsky Russia Eastern Kamchatka Volcanic Arc 2025 Apr 30 Continuing
Kilauea United States Hawaiian-Emperor Hotspot Volcano Group 2024 Dec 23 Continuing
Krakatau Indonesia Sunda Volcanic Arc Continuing
Lewotolok Indonesia Sunda Volcanic Arc 2025 Jan 16 Continuing
Little Sitkin United States Aleutian Ridge Volcanic Arc Continuing
Manam Papua New Guinea Bismarck Volcanic Arc 2018 May 10 ± 10 days Continuing
Merapi Indonesia Sunda Volcanic Arc 2020 Dec 31 Continuing
Pavlof United States Aleutian Ridge Volcanic Arc Continuing
Popocatepetl Mexico Trans-Mexican Volcanic Arc 2005 Jan 9 Continuing
Sao Jorge Portugal Azores-Terceira Rift Volcanic Province Continuing
Semeru Indonesia Sunda Volcanic Arc 2017 Jun 6 Continuing
Sheveluch Russia Eastern Kamchatka Volcanic Arc 1999 Aug 15 Continuing
Suwanosejima Japan Ryukyu Volcanic Arc 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 21,396 individual reports over 1,275 weeks (average of 17 per week) on 339 different volcanoes.

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Adams Cotopaxi Ijen Lewotobi Peuet Sague St. Helens
Agung Cuicocha Iliamna Lewotolok Pinatubo Stromboli
Ahyi Cumbal Iliwerung Little Sitkin Planchon-Peteroa Sulu Range
Aira Dabbahu Inielika Llaima Poas Sumbing
Akan Davidof Ioto Lokon-Empung Popocatepetl Sumisujima
Alaid Dempo Irazu Lonquimay Purace Sundoro
Alu-Dalafilla Descabezado Grande Iwatesan Lopevi Puyehue-Cordon Caulle Suoh
Ambae Dieng Volcanic Complex Iya Machin Rabaul Suretamatai
Ambang Dukono Izu-Torishima Makushin Raikoke Suwanosejima
Ambrym East Epi Jackson Segment Maly Semyachik Ranakah Taal
Anatahan Ebeko Kaba Manam Raoul Island Tair, Jebel at
Aniakchak Ebulobo Kadovar Manda Hararo Rasshua Takawangha
Antillanca Volcanic Complex Edgecumbe Kaitoku Seamount Marapi Raung Talang
Antuco Egon Kama'ehuakanaloa Maroa Redoubt Tambora
Apoyeque Ekarma Kambalny Martin Reventador Tanaga
Arenal Eldey Kanaga Masaya Reykjanes Tandikat-Singgalang
Asamayama Erebus Kanlaon Matthew Island Rincon de la Vieja Tangkoko-Duasudara
Askja Erta Ale Karangetang Maule, Laguna del Rinjani Tangkuban Parahu
Asosan Etna Karkar Mauna Loa Ritter Island Tara, Batu
Atka Volcanic Complex Etorofu-Yakeyama [Grozny Group] Karthala Mayon Rotorua Ta'u
Augustine Eyjafjallajokull Karymsky McDonald Islands Ruang Taupo
Avachinsky Fagradalsfjall Kasatochi Melebingoy Ruapehu Telica
Awu Fentale Katla Melimoyu Ruby Tenerife
Axial Seamount Fernandina Katmai Merapi Ruiz, Nevado del Tengger Caldera
Azul, Cerro Fogo Kavachi Midagahara Sabancaya Three Sisters
Azumayama Fonualei Kelimutu Misti, El Sakar Tinakula
Bagana Fournaise, Piton de la Kelud Miyakejima Salak Tofua
Balbi Fourpeaked Kerinci Momotombo San Cristobal Tokachidake
Bamus Fuego Ketoi Monowai San Miguel Tolbachik
Banda Api Fujisan Kharimkotan Montagu Island San Vicente Toliman
Bardarbunga Fukutoku-Oka-no-Ba Kick 'em Jenny Moyorodake [Medvezhia] Sangay Tongariro
Barren Island Galeras Kie Besi Mutnovsky Sangeang Api Trident
Batur Galunggung Kikai Myojinsho Santa Ana Tungurahua
Bezymianny Gamalama Kilauea Nabro Santa Maria Turrialba
Bogoslof Gamkonora Kirishimayama Negra, Sierra Sao Jorge Ubinas
Brava Gareloi Kita-Ioto Negro, Cerro Sarigan Ugashik-Peulik
Bristol Island Gaua Kizimen Nightingale Island Sarychev Peak Ukinrek Maars
Bulusan Gede Klyuchevskoy Nishinoshima Saunders Ulawun
Calbuco Gorely Kolokol Group Nisyros Savo Unnamed
Callaqui Great Sitkin Kolumbo Northern EPR at 9.8°N Semeru Unnamed
Cameroon Grimsvotn Koryaksky Novarupta Semisopochnoi Veniaminof
Campi Flegrei Guagua Pichincha Krakatau NW Rota-1 Seulawah Agam Villarrica
Campi Flegrei del Mar di Sicilia Guallatiri Krummel-Garbuna-Welcker Nyamulagira Sheveluch Vulcano
Cayambe Guntur Krysuvik-Trolladyngja Nyiragongo Shishaldin West Mata
Chachadake [Tiatia] Hachijojima Kuchinoerabujima Ofu-Olosega Simbo Westdahl
Chaiten Hakoneyama Kurikomayama Okataina Sinabung Whakaari/White Island
Chiginagak Heard Kusatsu-Shiranesan Okmok Sinarka Witori
Chikurachki Hekla Kverkfjoll Ontakesan Siple Wolf
Chiles-Cerro Negro Helgrindur La Palma Oraefajokull Sirung Wrangell
Chillan, Nevados de Hierro Lamington Osorno Slamet Yakedake
Chirinkotan Hokkaido-Komagatake Lamongan Pacaya Snaefellsjokull Yasur
Chirpoi Home Reef Langila Pagan Soputan Yellowstone
Ciremai Hood Lanin Palena Volcanic Group Sorikmarapi Yufu-Tsurumi
Cleveland Huaynaputina Lascar Paluweh Sotara Zaozan [Zaosan]
Colima Hudson, Cerro Late Panarea Soufriere Hills Zavodovski
Colo Huila, Nevado del Lateiki Papandayan Soufriere St. Vincent Zhupanovsky
Concepcion Hunga Tonga-Hunga Ha'apai Lengai, Ol Doinyo Pavlof South Sarigan Seamount Zubair Group
Copahue Ibu Leroboleng Pelee Spurr
 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 Ebeko
KVERT reported that moderate activity at Ebeko was ongoing during 7-14 July. According to volcanologists in Severo-Kurilsk (Paramushir Island, about 7 km E) explosions generated ash plumes that rose up to 3 km (10,000 ft) a.s.l. and drifted E. A thermal anomaly over the volcano was identified in satellite images during 10-11 July. According to observers, an explosion at 1740 local time on 16 July produced an ash plume that rose to 4.5 km (14,800 ft) a.s.l. and drifted 5 km SE. 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 Turrialba
OVSICORI-UNA reported that at 0749 on 17 July a brief ash emission from Turrialba rose 200 m above the crater and drifted SW. Minor amounts of ash fell in Irazú Volcano National Park.
Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)
Report for Aira
JMA reported that nighttime incandescence at Minamidake Crater (at Aira Caldera’s Sakurajima volcano) was visible during 11-18 July. Sulfur dioxide emissions were measured at 1,400 tons per day on 13 July. One explosion, recorded at 1852 on 17 July, produced an ash plume that rose as high as 2.8 km above the crater rim and ejected material as high as 1.1 km above the summit. The Alert Level remained at 3 (on a 5-level scale), and residents were warned to stay 2 km away from the crater.
Source: Japan Meteorological Agency (JMA)
Report for Great Sitkin
AVO reported that slow lava effusion at Great Sitkin continued during 12-19 July. Elevated surface temperatures were identified in satellite images on most days; weather clouds sometimes obscured satellite and webcam views. Seismicity was low, and occasional local earthquakes were recorded. 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 Kama'ehuakanaloa
An earthquake swarm began at Kama'ehuakanaloa at about 0200 on 16 July and was characterized by seismic tremor accompanied by pulses of seismic energy every 15-20 seconds. The pattern of elevated seismicity continued through at least 1453 on 17 July, the posting time of the HVO’s information statement. The report also noted that around 24 earthquakes in the M 1.8-3 range were recorded during 0130-0600 on 17 July. The Scientist-in-Charge stated that the seismicity was likely the result of magma movement beneath the seamount, but there were no show signs of an imminent eruption. The most recent swarm was recorded on 11 May 2020 and consisted of 18 events in the M 3-3.9 range. The Volcano Alert Level and the Aviation Color Code both remained at Unassigned; there are no working monitoring instruments on the volcano so information is based on and-based seismometers.
Source: US Geological Survey Hawaiian Volcano Observatory (HVO)
Report for Karymsky
KVERT reported that a thermal anomaly over Karymsky was identified in satellite images during 7-14 July. At 2250 local time on 13 July ash plumes were identified in satellite images rising 10-11 km (32,800-36,100 ft) a.s.l. and drifting 360 km SW. 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 12-19 July, entering the lava lake and flowing onto the crater floor. The lake level was relatively low, though by 16 July it had risen to the bounding levees along the margins. Incandescence from the W vent complex was visible during 16-19 July. Lava oozed from the lake margins during the early morning of 19 July. 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 Krakatau
PVMBG reported that several eruptive events were recorded at Anak Krakatau during 16-18 July. Eruptions at 2253 and 2339 on 16 July, 0847 on 17 July, and 0826, 1549, and 1730 on 18 July produced dense gray-to-black ash plumes that rose 1-2.5 km above the summit and drifted NE, S, SW, and W. Webcam image acquired at 2308 and 2344 on 16 July showed incandescence at the vent. The Alert Level remained at 3 (on a scale of 1-4), and the public was warned to stay at least 5 km away from the crater.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Lewotolok
PVMBG reported that the eruption at Lewotolok continued during 12-19 July. Daily white or white-and-gray emissions rose as high as 800 m above the summit and drifted in multiple directions. Photos in some posted reports showed Strombolian activity from the crater. 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 Little Sitkin
On 14 July AVO moved the Aviation Color Code for Little Sitkin to Green and the Volcano Alert Level from Unassigned to Normal because an upgraded communication link to installed instruments allowed better monitoring of unrest. The volcano is monitored using local seismic and infrasound sensors, satellite data, web cameras, and remote infrasound and lightning networks.
Source: US Geological Survey Alaska Volcano Observatory (AVO)
Report for Manam
The Darwin VAAC reported that on 14 July ash plumes from Manam rose to 2.1 km (7,000 ft) a.s.l. and drifted NW based on satellite and RVO webcam images.
Source: Darwin Volcanic Ash Advisory Centre (VAAC)
Report for Merapi
BPPTKG reported that the eruption at Merapi continued during 8-14 July. The heights and morphologies of the SW and central lava domes were unchanged from the previous week, and seismicity remained at high levels. As many as 43 lava avalanches traveled down the Bebeng drainage on the SW flank, reaching a maximum distance of 2 km. 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 Pavlof
AVO reported that a minor eruption at a vent on Pavlof’s upper E flank was ongoing during 12-19 July. Seismic tremor persisted and multiple daily explosions were detected in seismic and infrasound data. Elevated surface temperatures identified in satellite images on a few of the days possibly reflected ongoing minor lava effusion; cloud cover prevented views on most of the days during the week. Minor ash emissions were seen in webcam images during 18019 July. 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 Popocatepetl
CENAPRED reported that each day during 12-18 July there were 8-39 steam-and-gas emissions rising from Popocatépetl that drifted SW and WNW. The Alert Level remained at Yellow, Phase Two (the middle level on a three-color scale).
Source: Centro Nacional de Prevencion de Desastres (CENAPRED)
Report for Sao Jorge
A seismic swarm at São Jorge began at 1605 on 19 March along a WNW-ESE fissure system stretching from Ponta dos Rosais to Norte Pequeno - Silveira. The seismic data as well as deformation data indicated a magmatic intrusion, though by early April no significant deformation was detected. The frequency of earthquakes had decreased in late May-early June, leading CIVISA to lower the Alert Level to V3 (on a scale of V0-V6) on 8 June. Seismicity continued to be elevated; by 18 July a total of 43,410 low-magnitude tectonic events had been recorded.
Source: Centro de Informação e Vigilância Sismovulcânica dos Açores (CIVISA)
Report for Semeru
PVMBG reported that the eruption at Semeru continued during 12-18 July. At 0614 on 14 July an ash plume rose 500 m above the summit and drifted SW. 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 from Kobokan drainages within 17 km of the summit, 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 Sheveluch
KVERT reported that the ongoing eruption at Sheveluch was characterized by explosions, hot avalanches, and lava-dome extrusion. A thermal anomaly was identified in satellite images during 7-14 July. Satellite images showed ash plumes drifting 82 km SW and SE during 11-13 July. 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 the eruption at Suwanosejima's Ontake Crater continued during 11-18 July. There were 13 explosions, producing eruption plumes that rose as high as 1.5 km above the crater rim and ejecting material 700 m from the vent. Crater incandescence was observed nightly. The Alert Level remained at 2 and the public was warned to stay 1 km away from the crater.
Source: Japan Meteorological Agency (JMA)