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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, notices of volcanic activity posted on these pages are preliminary and subject to change as events are studied in more detail.

This is not a comprehensive list of all of Earth's volcanoes erupting during the week, but rather a summary of activity that meet criteria discussed in detail in the "Criteria and Disclaimers" section. Carefully reviewed, detailed narratives on various volcanoes are published as reports of the Bulletin of the Global Volcanism Network.

Smithsonian / USGS Weekly Volcanic Activity Report for the week of 8 April-14 April 2020
Name Location Eruption Start Date Report Status
Kerinci Indonesia 2018 Apr 21 New
Krakatau Indonesia 2018 Jun 18 New
Semeru Eastern Java (Indonesia) 2014 Apr 1 ± 15 days New
Shishaldin Fox Islands (USA) New
Aira Kyushu (Japan) 2017 Mar 25 Continuing
Dukono Halmahera (Indonesia) 1933 Aug 13 Continuing
Ebeko Paramushir Island (Russia) 2016 Oct 20 Continuing
Fuego Guatemala 2002 Jan 4 Continuing
Ibu Halmahera (Indonesia) 2008 Apr 5 Continuing
Klyuchevskoy Central Kamchatka (Russia) Continuing
Mayon Luzon (Philippines) Continuing
Merapi Central Java (Indonesia) Continuing
Rincon de la Vieja Costa Rica 2020 Jan 30 Continuing
Sheveluch Central Kamchatka (Russia) 1999 Aug 15 Continuing
Suwanosejima Ryukyu Islands (Japan) 2004 Oct 23 Continuing
Taal Luzon (Philippines) Continuing
Weekly Reports Archive

Since the Weekly Volcanic Activity Report began in November 2000, there have been 16,134 individual reports over 1,037 weeks (average of 16 per week) on 307 different volcanoes.

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

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Agung Concepcion Ibu Lewotolo Parker Soufriere Hills
Ahyi Copahue Ijen Little Sitkin Pavlof Soufriere St. Vincent
Aira Cotopaxi Iliamna Llaima Peuet Sague South Sarigan Seamount
Akan Cuicocha Iliwerung Loihi Pinatubo Spurr
Alaid Cumbal Inielika Lokon-Empung Planchon-Peteroa St. Helens
Alu-Dalafilla Dabbahu Ioto Lopevi Poas Stromboli
Ambae Dempo Irazu Machin Popocatepetl Sulu Range
Ambang Descabezado Grande Iya Makian Puyehue-Cordon Caulle Sumbing
Ambrym Dieng Volcanic Complex Izu-Torishima Makushin Rabaul Sundoro
Anatahan Dukono Jackson Segment Maly Semyachik Raikoke Suretamatai
Antillanca Volcanic Complex Ebeko Kaba Manam Ranakah Suwanosejima
Antuco Ebulobo Kadovar Manda Hararo Raoul Island Taal
Apoyeque Egon Kambalny Marapi Rasshua Tair, Jebel at
Arenal Ekarma Kanaga Maroa Raung Takawangha
Asamayama Epi Kanlaon Martin Redoubt Talang
Askja Erebus Karangetang Masaya Reventador Tambora
Asosan Erta Ale Karkar Maule, Laguna del Reykjanes Tanaga
Augustine Etna Karthala Mauna Loa Rincon de la Vieja Tandikat-Singgalang
Avachinsky Etorofu-Yakeyama [Grozny Group] Karymsky Mayon Rinjani Tangkoko-Duasudara
Awu Eyjafjallajokull Kasatochi McDonald Islands Ritter Island Tangkuban Parahu
Axial Seamount Fernandina Katla Melimoyu Rotorua Tara, Batu
Azul, Cerro Fogo Katmai Merapi Ruang Telica
Azumayama Fonualei Kavachi Midagahara Ruapehu Tenerife
Bagana Fournaise, Piton de la Kelimutu Misti, El Ruiz, Nevado del Tengger Caldera
Balbi Fourpeaked Kelut Miyakejima Sabancaya Three Sisters
Bamus Fuego Kerinci Momotombo Sakar Tinakula
Banda Api Fujisan Ketoi Monowai Salak Tofua
Bardarbunga Fukutoku-Oka-no-Ba Kharimkotan Montagu Island San Cristobal Tokachidake
Barren Island Galeras Kick 'em Jenny Moyorodake [Medvezhia] San Miguel Tolbachik
Batur Galunggung Kikai Mutnovsky San Vicente Toliman
Bezymianny Gamalama Kilauea Myojinsho Sangay Tongariro
Bogoslof Gamkonora Kirishimayama Nabro Sangeang Api Tungurahua
Brava Gaua Kizimen Negra, Sierra Santa Ana Turrialba
Bristol Island Gorely Klyuchevskoy Negro, Cerro Santa Maria Ubinas
Bulusan Great Sitkin Kolokol Group Nightingale Island Sarigan Ulawun
Calbuco Grimsvotn Korovin Nishinoshima Sarychev Peak Unnamed
Callaqui Guagua Pichincha Koryaksky Nisyros Saunders Unnamed
Cameroon Guallatiri Krakatau Novarupta Semeru Veniaminof
Campi Flegrei del Mar di Sicilia Guntur Krummel-Garbuna-Welcker NW Rota-1 Semisopochnoi Villarrica
Cayambe Hachijojima Kuchinoerabujima Nyamuragira Seulawah Agam West Mata
Cereme Hakoneyama Kurikomayama Nyiragongo Sheveluch Westdahl
Chachadake [Tiatia] Heard Kusatsu-Shiranesan Okataina Shishaldin Whakaari/White Island
Chaiten Hekla Kverkfjoll Okmok Simbo Witori
Chiginagak Helgrindur Lamington Ontakesan Sinabung Wolf
Chikurachki Hierro Lamongan Oraefajokull Sinarka Yasur
Chiles-Cerro Negro Hokkaido-Komagatake Langila Osorno Siple Zaozan [Zaosan]
Chillan, Nevados de Home Reef Lanin Pacaya Sirung Zavodovski
Chirinkotan Hood Lascar Pagan Slamet Zhupanovsky
Chirpoi Huaynaputina Lateiki Palena Volcanic Group Snaefellsjokull Zubair Group
Cleveland Hudson, Cerro Lengai, Ol Doinyo Paluweh Soputan
Colima Huila, Nevado del Leroboleng Panarea Sorikmarapi
Colo Hunga Tonga-Hunga Ha'apai Lewotobi Papandayan Sotara
 News Feeds and Google Placemarks


Download Smithsonian / USGS Weekly Volcanic Activity Report Network RSS Feed

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.



Download Smithsonian / USGS Weekly Volcanic Activity Report Network CAP Feed

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Download Smithsonian/USGS Weekly Volcanic Activity Report Network Link Download Smithsonian / USGS Weekly Volcanic Activity Report Network Link

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 monthly, and 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 Kerinci
According to the Darwin VAAC, PVMBG reported that on 10 April an ash plume from Kerinci rose 600 m above the summit and drifted NW. On 13 April an observer noted that an ash plume rose to 900 m above the summit; the emission was not visible in satellite data. An ash plume rose 400 m above the summit on 14 April; meteorological clouds obscured views. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 3-km exclusion zone.
Sources: Darwin Volcanic Ash Advisory Centre (VAAC), Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Krakatau
PVMBG reported that at 2158 and 2235 on 10 April an eruptive event at Anak Krakatau generated dense white, gray, and black ash plumes that rose as high as 2 km above the summit and drifted S and E. The events were followed by Strombolian activity that ejected incandescent material onto the crater floor and summit areas; video revealed lightning visible in the ash cloud. The Darwin VAAC issued a notice at 0145 on 11 April stating that an eruption plume had risen to 14.3 km (47,000 ft) a.s.l., but noted low confidence in the altitude due to the possible mixing of the eruption plume with meteorological storm clouds. An intense thermal anomaly was visible. An hour later the VAAC reported an on-going sulfur-rich plume rising to 11.3 km (37,000 ft) a.s.l. and drifting W; the previous plume remained visible and continued to drift NW. Later that day ash plumes rose to 3 km (10,000 ft) a.s.l. and drifted N. During 12-13 April plumes comprised mostly of sulfur dioxide and steam rose to 3 km (10,000 ft) a.s.l.; the plumes did not have a strong ash signal. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km-radius hazard zone from the crater.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Semeru
PVMBG reported that during 6-12 April dense white-gray plumes rose 200-500 m above Semeru’s summit. Incandescent material was ejected 20 m above the Jonggring-Seloko Crater. Incandescent material from the ends of lava flows descended 200-1,000 m, reaching a maximum distance of 750-1,500 m from the crater. The Alert Level remained at 2 (on a scale of 1-4), and the public was reminded to stay outside of the general 1-km radius from the summit and 4 km on the SSE flank.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Shishaldin
AVO reported elevated seismicity at Shishaldin during 8-13 April characterized by occasional low-frequency earthquakes. Minor steaming from the summit crater was sometimes seen in satellite and webcam data. A small thermal anomaly was visible in satellite data during 8-9 April. 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 Aira
JMA reported that during 6-13 April incandescence from Minamidake Crater (at Aira Caldera’s Sakurajima volcano) was visible nightly. The seismic network recorded 16 eruptive events and 6 explosions. Ash plumes rose as high as 2 km above the crater rim and material was ejected 300-500 m away from the crater. The Alert Level remained at 3 (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
Report for Dukono
Based on satellite and wind model data, the Darwin VAAC reported that during 8-14 April ash plumes from Dukono rose to 2.1-3 km (7,000-10,000 ft) a.s.l. and drifted in multiple directions. The Alert Level remained at 2 (on a scale of 1-4), and the public was warned to remain outside of the 2-km exclusion zone.
Sources: Darwin Volcanic Ash Advisory Centre (VAAC), Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Ebeko
Volcanologists in Severo-Kurilsk (Paramushir Island), about 7 km E of Ebeko, observed explosions during 4-5 and 9 April that sent ash plumes up to 1.5 km (4,900 ft) a.s.l. Ash plumes drifted NE. A thermal anomaly was visible in satellite images on 5 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Fuego
In a special report from 6 April INSIVUMEH reported a change in the eruptive pattern at Fuego indicated by seismic and acoustic data. Lava effused from a summit vent and traveled 400 m down the Ceniza (SSW) drainage. Avalanches of material descended the flank as far as 1 km, reaching vegetated areas. Explosions caused rumbling, shock waves, and ash plumes that rose 1.1 km above the summit. The report noted that this activity was similar to the eight-day phase during 16-24 March.

There were 5-14 explosions per hour recorded during 7-14 April, generating ash plumes that rose as high as 1.1 km above the crater rim and generally drifted 10-20 km in multiple directions. Minor ashfall was reported in several areas downwind including Santa Sofía (12 km SW), Morelia (9 km SW), Panimaché I and II (8 km SW), Quisache, and Sangre de Cristo (8 km WSW). Explosions sometimes produced shock waves that rattled houses in communities within a 25-km radius. Incandescent material was ejected 100-600 m high. Lava flows in the Ceniza drainage had variable lengths during the week, from 200 to 600 m long. Avalanches of blocks from the lava flows traveled sometimes long distances, and in some cases set fire to vegetated areas.
Source: Instituto Nacional de Sismologia, Vulcanologia, Meteorologia, e Hidrologia (INSIVUMEH)
Report for Ibu
The Darwin VAAC reported that during 8-10 and 13 April ash plumes from Ibu rose 1.8-2.1 km (6,000-7,000 ft) a.s.l. and drifted N, SE, and S based on satellite images and weather models. 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.
Sources: Darwin Volcanic Ash Advisory Centre (VAAC), Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Klyuchevskoy
KVERT reported that Strombolian activity at Klyuchevskoy was visible during 3-10 April along with a bright thermal anomaly identified in satellite images. Vulcanian activity was visible during 6-9 April; ash plumes drifted 200 km S, SE, and E at altitudes of 5.5-6 km (18,000-19,700 ft) a.s.l. on those same days. The Aviation Color Code remained at Orange.
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Mayon
PHIVOLCS reported that during 7-14 April white steam plumes periodically emitted from Mayon rose as high as 400 m above the summit and drifted mainly NW, W, and SW. Crater incandescence was visible nightly. 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)
Report for Merapi
PVMBG reported that an eruption at Merapi began at 0910 on 10 April and lasted for one minute and 43 seconds. A gray ash plume rose as high as 3 km above the summit and drifted NW. The Alert Level remained at 2 (on a scale of 1-4), and residents were warned to stay outside of the 3-km exclusion zone.
Source: Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG, also known as CVGHM)
Report for Rincon de la Vieja
OVSICORI-UNA reported periodic hydrothermal explosions at Rincón de la Vieja during 8-14 April. A possible small eruption occurred at 0658 on 8 April and was followed by a decrease in the amplitude of tremor signals. Beginning at 0033 on 11 April a small-scale hydrothermal explosion was recorded by the infrasoiund and seismic networks for 20 seconds. Water and sediment was ejected onto the upper flanks of the volcano. The event was recorded by the webcam located in Sensoria, 4 km N of the crater. In the morning local residents noted that the water in the Pénjamo River was milky white. A small hydrothermal explosion at 0251 on 13 April produced a plume of steam and gas that rose 500 m.
Source: Observatorio Vulcanologico y Sismologico de Costa Rica-Universidad Nacional (OVSICORI-UNA)
Report for Sheveluch
KVERT reported that a thermal anomaly over Sheveluch was identified in satellite images during 3-10 April. Explosions on 8 April generated ash plumes that rose to 10 km (32,800 ft) a.s.l. and drifted 526 km SE during 8-9 April. The Aviation Color Code remained at Orange (the second highest level on a four-color scale).
Source: Kamchatkan Volcanic Eruption Response Team (KVERT)
Report for Suwanosejima
JMA reported that during 3-10 April incandescence from Suwanosejima’s Ontake Crater was visible nightly. Small eruptions occasionally occurred, producing gray-white plumes that rose as high as 900 m above the crater rim; rumbling sounds were noted in a village 4 km SSW. The Alert Level remained at 2 (on a 5-level scale).
Source: Japan Meteorological Agency (JMA)
Report for Taal
PHIVOLCS reported that during 8-9 April steam plumes rose 100-300 m above the Taal’s main vent and drifted SW. Weak steaming (plumes up to 20 m high) from ground cracks was visible during 8-14 April along the Daang Kastila trail which connects the N part of Volcano Island to the N part of the main crater. PHIVOLCS had lowered the Alert Level to 1 (on a scale of 0-5) on 19 March and recommended no entry onto Volcano Island, the area defined as the Permanent Danger Zone.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)