Autor: global-affair

Shiveluch (Kamchatka): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 32000 ft (9800 m) altitude or flight level 320 and is moving at 30 kts in SE direction.
The full report is as follows: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY OBS VA DTG:20/1720Z to 32000 ft (9800 m)

Bezymianny (Kamchatka): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Tokyo warned about a volcanic ash plume that rose up to estimated 28000 ft (8500 m) altitude or flight level 280 and is moving at 10 kts in SE direction.
The full report is as follows: VA CONTINUOUSLY OBS IN SATELLITE IMAGERY OBS VA DTG:20/1720Z to 28000 ft (8500 m)

Canlaon (Central Philippines): Volcanic Ash Advisory Center Tokyo (VAAC) issued the following report: ERUPTION AT 20260520/1219Z FL090 EXTD SW REPORTED OBS VA DTG:20/1210Z
…20 May:
The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption continued at Kanlaon on 19 May 2026 (local). The alert level remained at „2 – Moderate Level of Volcanic Unrest“ (on a 0–5 level scale).
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
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Current Alerts:
Observatory alert level: „2 – Moderate Level of Volcanic Unrest“ (on a 0–5 level scale)

Taal (Luzon, Philippines): The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption continued at Taal on 19 May 2026 (local). The alert level remained at „1 – Low-Level Unrest“ (on a 0–5 level scale).
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
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Current Alerts:
Observatory alert level: „1 – Low-Level Unrest“ (on a 0–5 level scale)

Mayon (Luzon Island, Philippines): The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption continued at Mayon on 19 May 2026 (local). Plume(s) rose to a maximum of 400 m (1,312 ft) above the vent. Volcanic seismicity was recorded 26 times. Tremor episodes were recorded 15 times. There were 326 seismically detected rockfalls. Seismicity related to pyroclastic density currents was recorded 3 times. Crater glow was visible to the naked eye. Sulfur dioxide (SO₂) emissions averaged 658 tonnes per day on 19 May. Ground deformation indicated short-term deflation across the volcanic edifice, with shorter-term inflation localized on the NE flank. The alert level remained at „3 – Increased Tendency Towards Hazardous Eruption“ (on a 0–5 level scale). Activity also included: seismically detected pyroclastic density current(s) (PDCs), tremor, volcanic seismicity.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
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Current Alerts:
Observatory alert level: „3 – Increased Tendency Towards Hazardous Eruption“ (on a 0–5 level scale)

Bulusan (Luzon Island, Philippines): The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that unrest continued at Bulusan on 19 May 2026 (local). Plume(s) rose to a maximum of 100 m (328 ft) above the vent. Volcanic seismicity was recorded 252 times. The alert level remained at „1 – Low Level of Volcanic Unrest“ (on a 0–5 level scale). Activity also included: inflationary deformation, volcanic seismicity.
Source: Philippine Institute of Volcanology and Seismology (PHIVOLCS)
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Current Alerts:
Observatory alert level: „1 – Low Level of Volcanic Unrest“ (on a 0–5 level scale)

Central Bismarck Sea (Admiralty Islands): Volcanic Ash Advisory Center Darwin (VAAC) issued the following report: EMISSION TO FL190 OBS AT 20/0530Z EST VA DTG:20/0940Z

Telong (northern Sumatra, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Telong, Bur ni on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Raung (East Java): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Raung on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Gamalama (Halmahera): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Gamalama on 19 May 2026 (local). Gas and vapor plume(s) rose to a maximum of 500 m (1,640 ft) above the vent. The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Slamet (Central Java, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Slamet on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Ibu (Halmahera, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 8000 ft (2400 m) altitude or flight level 080 and is moving at 05 kts in NE direction.
The full report is as follows: VA TO FL080 REP AT 20/1251Z EST VA DTG:20/1740Z to 8000 ft (2400 m)
…20 May:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Ibu on 19 May 2026 (local). Gas and vapor plume(s) rose to a maximum of 200 m (656 ft) above the vent. There were 119 explosions reported, with plumes rising to a maximum of 800 m (2,625 ft) above the vent. The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Tangkubanparahu (West Java): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) issued a report for Tangkuban Parahu on 19 May 2026 (local). The alert level remained at „Level 1 – Normal“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 1 – Normal“ (on a 4-level scale)

Sangeang Api (Flores Sea, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Sangeang Api on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Tambora (Sumbawa): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Tambora on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Lewotobi (Flores): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Lewotobi (Laki-Laki) on 19 May 2026 (local). Gas and vapor plume(s) rose to a maximum of 200 m (656 ft) above the vent. Low-frequency (LF) earthquakes were detected 6 times. Gas emission seismicity was recorded 4 times. The alert level remained at „Level 3 – Standby“ (on a 4-level scale). Activity also included: gas emission seismicity, low-frequency (LF) seismicity.
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 3 – Standby“ (on a 4-level scale)

Soputan (North Sulawesi, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Soputan on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Lewotolo (Lesser Sunda Islands): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Lewotolok on 19 May 2026 (local). There were 2 seismically detected rockfalls. The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Sorikmarapi (Sumatra): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Sorikmarapi on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Krakatau (Sunda Strait, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Krakatau on 19 May 2026 (local). Gas and vapor plume(s) rose to a maximum of 5 m (16 ft) above the vent. The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Merapi (Central Java, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Merapi on 19 May 2026 (local). Gas and vapor plume(s) rose to a maximum of 10 m (33 ft) above the vent. Seismicity related to pyroclastic density currents was recorded 1 times. There were 6 hot rockfalls, traveling up to 1,700 m. There were 138 seismically detected rockfalls. The alert level remained at „Level 3 – Standby“ (on a 4-level scale). Activity also included: seismically detected pyroclastic density current(s) (PDCs).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 3 – Standby“ (on a 4-level scale)

Semeru (East Java, Indonesia): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 15000 ft (4600 m) altitude or flight level 150 .
The full report is as follows: VA TO FL150 OBS AT 20/1330Z MOV SE OBS VA DTG:20/1330Z to 15000 ft (4600 m)
…20 May:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Semeru on 19 May 2026 (local). There were 53 explosions reported, with plumes rising to a maximum of 1,000 m (3,281 ft) above the vent. There were 3 seismically detected rockfalls. The alert level remained at „Level 3 – Standby“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 3 – Standby“ (on a 4-level scale)

Ijen (East Java, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) issued a report for Ijen on 19 May 2026 (local). The alert level remained at „Level 1 – Normal“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 1 – Normal“ (on a 4-level scale)

Marapi (Western Sumatra, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Marapi on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Dempo (Sumatra): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Dempo on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Dukono (Halmahera): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Darwin warned about a volcanic ash plume that rose up to estimated 10000 ft (3000 m) altitude or flight level 100 and is moving at 05 kts in NE direction.
The full report is as follows: VA TO FL100 LAST REPORTED AT 20/0814Z EST VA DTG:20/1020Z to 10000 ft (3000 m)
…20 May:
The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that the eruption continued at Dukono on 19 May 2026 (local). There were 190 explosions reported, with plumes rising to a maximum of 3,000 m (9,843 ft) above the vent. The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Awu (Sulawesi & Sangihe Islands): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest activity increased at Awu on 19 May 2026 (local). The alert level was raised to „Level 3 – Standby“ (on a 4-level scale) on 19 May 2026 at 0000 by CVGHM/PVMBG.
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 3 – Standby“ (on a 4-level scale)

Kerinci (Sumatra): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Kerinci on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Iya (Flores): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Iya on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Lokon-Empung (North Sulawesi, Indonesia): The Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG) reported that unrest continued at Lokon-Empung on 19 May 2026 (local). The alert level remained at „Level 2 – Alert“ (on a 4-level scale).
Source: Center for Volcanology and Geological Hazard/Pusat Vulkanologi dan Mitigasi Bencana Geologi (CVGHM/PVMBG)
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Current Alerts:
Observatory alert level: „Level 2 – Alert“ (on a 4-level scale)

Kilauea (Hawai’i): The United States Geological Survey – Hawaiian Volcano Observatory (USGS-HVO) reported that there was a pause in eruptive activity at Kilauea between 18 May 2026 (local) and 19 May 2026 (local). The alert level remained at „Advisory“ (level 2 on a 4-level scale). The aviation alert level remained at „Yellow“ (level 2 on a 4-level scale).
Source: United States Geological Survey – Hawaiian Volcano Observatory (USGS-HVO)
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Current Alerts:
Observatory alert level: „Advisory“ (level 2 on a 4-level scale)

Shishaldin (Aleutian Islands, Alaska): The United States Geological Survey – Alaska Volcano Observatory (USGS-AVO) reported that unrest continued at Shishaldin between 18 May 2026 (local) and 19 May 2026 (local). The alert level remained at „Advisory“ (level 2 on a 4-level scale). The aviation alert level remained at „Yellow“ (level 2 on a 4-level scale).
Source: United States Geological Survey – Alaska Volcano Observatory (USGS-AVO)
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Current Alerts:
Observatory alert level: „Advisory“ (level 2 on a 4-level scale)

Great Sitkin (United States, Aleutian Islands): The United States Geological Survey – Alaska Volcano Observatory (USGS-AVO) reported that the eruption continued at Great Sitkin between 18 May 2026 (local) and 19 May 2026 (local). The alert level remained at „Watch“ (level 3 on a 4-level scale). The aviation alert level remained at „Orange“ (level 3 on a 4-level scale).
Source: United States Geological Survey – Alaska Volcano Observatory (USGS-AVO)
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Current Alerts:
Observatory alert level: „Watch“ (level 3 on a 4-level scale)

Kupreanof (United States, Alaska Peninsula): The United States Geological Survey – Alaska Volcano Observatory (USGS-AVO) reported that unrest continued at Kupreanof between 18 May 2026 (local) and 19 May 2026 (local). The alert level remained at „Advisory“ (level 2 on a 4-level scale). The aviation alert level remained at „Yellow“ (level 2 on a 4-level scale).
Source: United States Geological Survey – Alaska Volcano Observatory (USGS-AVO)
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Current Alerts:
Observatory alert level: „Advisory“ (level 2 on a 4-level scale)

Popocatépetl (Central Mexico): The Centro Nacional de Prevención de Desastres (CENAPRED) reported that the eruption continued at Popocatépetl between 18 May 2026 (local) and 19 May 2026 (local). Ash, gas, and vapor plume(s) were reported. A total of 198 low-intensity exhalations were recorded, along with 6.5 minutes of high-frequency tremor. At 0109 on 19 May, a M1.6 volcano-tectonic (VT) earthquake was recorded. The alert level remained at „Yellow Alert – Phase 2“ (level 4 on a 7-level scale).
Source: Centro Nacional de Prevención de Desastres (CENAPRED)
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Current Alerts:
Observatory alert level: „Yellow Alert – Phase 2“ (level 4 on a 7-level scale)

Fuego (Guatemala): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: FRQT EMS ON WEBCAM

Puracé (Colombia): Volcanic Ash Advisory Center Washington (VAAC) issued the following report: VONA RPRTS EMS

Sangay (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 20500 ft (6200 m) altitude or flight level 205 .
The full report is as follows: VA EM DETECTED to 20500 ft (6200 m)
…20 May:
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Sangay between 18 May 2026 (local) and 19 May 2026 (local). The alert level remained at „2 – Yellow“ (on a 4-level scale).
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
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Current Alerts:
Observatory alert level: „2 – Yellow“ (on a 4-level scale)

Reventador (Ecuador): Explosive activity continues. Volcanic Ash Advisory Center (VAAC) Washington warned about a volcanic ash plume that rose up to estimated 14000 ft (4300 m) altitude or flight level 140 .
The full report is as follows: VA EM DETECTED to 14000 ft (4300 m)
…20 May:
The Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN) reported that the eruption continued at Reventador between 18 May 2026 (local) and 19 May 2026 (local). The alert level remained at „3 – Orange“ (on a 4-level scale).
Source: Instituto Geofísico-Escuela Politécnica Nacional (IG-EPN)
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Current Alerts:
Observatory alert level: „3 – Orange“ (on a 4-level scale)

Sabancaya (Peru): The Centro Vulcanológico Nacional del Instituto Geofísico del Perú (CENVUL-IGP) reported that the eruption continued at Sabancaya between 18 May 2026 (local) and 19 May 2026 (local). Ash, gas, and vapor plume(s) rose to a maximum of 600 m (1,969 ft) above the vent. Thermal anomalies were detected 6 times. A total of 5 earthquakes related to the movement of magma and gases were recorded. Ground deformation data indicated minor inflation centered on the N sector of the volcano complex (nevado Hualca Hualca, located approximately 7 km N). The alert level remained at „Orange“ (level 3 on a 4-level scale). Activity also included: thermal anomaly(ies).
Source: Centro Vulcanológico Nacional del Instituto Geofísico del Perú (CENVUL-IGP)
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Current Alerts:
Observatory alert level: „Orange“ (level 3 on a 4-level scale)

Volcano Activity Summary for 20 May 2026:

An alert hike in Indonesia stood out today amid steady activity across several regions. Awu was raised to Level 3 – Standby, while ash was reported at Popocatepetl and Sabancaya but not at Sangay compared with yesterday. In Indonesia, Dukono and Ibu produced triple-digit daily explosions, and Mayon in the Philippines showed frequent rockfalls and tremor.

United States
At Great Sitkin (Watch / Aviation ORANGE), the long-running eruption persisted without notable changes, while Kilauea stayed in eruptive pause (Advisory / Aviation YELLOW). Low-level unrest continued at Shishaldin and Kupreanof (both Advisory / Aviation YELLOW).

Indonesia
A marked development came at Awu, where the alert was raised to Level 3 – Standby. Explosive activity was vigorous at Dukono (~190 explosions; plumes to 3 km) and Ibu (~119 explosions; plumes to 800 m), and Semeru logged 53 explosions with plumes to 1 km. At Merapi, numerous rockfalls and a PDC signal were recorded, while Lewotobi produced low gas plumes with LF and gas-emission quakes and Lewotolok saw two rockfalls. Unrest persisted at several others across the arc, while Ijen and Tangkuban Parahu were assessed at normal background levels.

Philippines
At Mayon (Alert Level 3), activity included plumes to 400 m, frequent rockfalls and tremor, three PDC-related signals, crater glow, and SO2 averaging 658 t/d; deformation showed short-term deflation with localized NE-flank inflation. Eruptive unrest persisted at Kanlaon (Alert Level 2), and low-level unrest at Bulusan featured a 100 m plume, 252 volcanic earthquakes, and inflationary deformation; Taal remained at Alert Level 1.

Mexico
Mexico’s Popocatepetl produced ash-and-gas plumes and 198 low-intensity exhalations with brief tremor; a M1.6 VT quake was recorded (Yellow Alert – Phase 2).

South America
Peru’s Sabancaya emitted ash-and-gas plumes to 600 m with thermal anomalies and minor inflation (Orange Alert), while Ecuador’s Reventador and Sangay maintained ongoing eruptions without notable new details.

Source: Smithsonian/USGS GVP Daily Volcanic Activity Report (19 May 2026).

Activity Summary for 19 May 2026

Volcano	Country	Activity Type	Keynotes
Dukono	Indonesia	Eruption	190 explosions; plumes to 3,000 m.
Great Sitkin	United States	Eruption	Eruption ongoing; Watch / Aviation ORANGE.
Ibu	Indonesia	Eruption	119 explosions; plumes to 800 m; gas-and-steam to 200 m.
Kilauea	United States	Pause	Eruptive pause; Advisory; Aviation YELLOW.
Kanlaon	Philippines	Eruption	Eruption ongoing; Alert Level 2 – Moderate Unrest.
Lewotobi	Indonesia	Eruption	Gas plumes 200 m; 6 LF quakes; 4 gas-emission quakes.
Lewotolok	Indonesia	Eruption	2 seismically detected rockfalls.
Marapi	Indonesia	Eruption	Eruption ongoing; Alert Level 2 – Alert.
Mayon	Philippines	Eruption	Plumes 400 m; 326 rockfalls with tremor and 3 PDC signals; crater glow, SO2 658 t/d.
Merapi	Indonesia	Eruption	6 hot rockfalls to 1.7 km; 138 rockfalls; 1 PDC signal.
Popocatepetl	Mexico	Eruption	Ash and gas plumes; 198 exhalations with 6.5 min tremor; M1.6 VT quake.
Reventador	Ecuador	Eruption	Eruption ongoing; Alert Level 3 – Orange.
Sabancaya	Peru	Eruption	Ash-gas plumes to 600 m; 6 thermal anomalies; 5 magmatic quakes, minor N-sector inflation.
Sangay	Ecuador	Eruption	Eruption ongoing; Alert Level 2 – Yellow.
Semeru	Indonesia	Eruption	53 explosions; plumes to 1,000 m; 3 rockfalls.
Taal	Philippines	Eruption	Eruption ongoing; Alert Level 1 – Low-Level Unrest.
Awu	Indonesia	Unrest	Unrest increased; Alert Level 3 – Standby.
Bulusan	Philippines	Unrest	Plumes 100 m; 252 volcanic quakes; inflationary deformation.
Bur ni Telong	Indonesia	Unrest	Ongoing unrest; Alert Level 2 – Alert.
Dempo	Indonesia	Unrest	Ongoing unrest; Alert Level 2 – Alert.
Gamalama	Indonesia	Unrest	Gas-and-steam plumes to 500 m.
Iya	Indonesia	Unrest	Ongoing unrest; Alert Level 2 – Alert.
Kerinci	Indonesia	Unrest	Ongoing unrest; Alert Level 2 – Alert.
Krakatau	Indonesia	Unrest	Gas-and-steam plume 5 m.
Kupreanof	United States	Unrest	Ongoing unrest; Advisory / Aviation YELLOW.
Lokon-Empung	Indonesia	Unrest	Ongoing unrest; Alert Level 2 – Alert.
Raung	Indonesia	Unrest	Ongoing unrest; Alert Level 2 – Alert.
Sangeang Api	Indonesia	Unrest	Ongoing unrest; Alert Level 2 – Alert.
Shishaldin	United States	Unrest	Ongoing unrest; Advisory / Aviation YELLOW.
Slamet	Indonesia	Unrest	Ongoing unrest; Alert Level 2 – Alert.
Soputan	Indonesia	Unrest	Ongoing unrest; Alert Level 2 – Alert.
Sorikmarapi	Indonesia	Unrest	Ongoing unrest; Alert Level 2 – Alert.
Tambora	Indonesia	Unrest	Ongoing unrest; Alert Level 2 – Alert.
Ijen	Indonesia	Background	Background activity; Alert Level 1 – Normal.
Tangkuban Parahu	Indonesia	Background	Background activity; Alert Level 1 – Normal.