Latest Volcanic Activity

The Wellington Volcanic Ash Advisory Center (VAAC) reported that ash-and-gas plumes from Ambae were identified in satellite and/or webcam images on 17 May rising to 1.8-3 km (6,000-10,000 ft) a.s.l. and drifting E and NW. The Alert Level remained at 3 (on a scale of 0-5), and the public was warned t...

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported increased seismicity at Bulusan in a 20 May advisory, with a total of 442 volcano-tectonic (VT) earthquakes recorded by the seismic network since 1600 on 18 May. The VT earthquakes were associated with rock fracturing, with 5...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity at Dukono?s Malupang Warirang Crater remained high after the 8 May eruption. During 9-16 May an average of 52 eruptive events per day were recorded with ash plumes rising 400-4,300 m above the summit and drift...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported an earthquake of magnitude 2.1 near Iya on 16 May 2026, followed by an increase in seismicity at Iya through 17 May. In general, white plumes rose as high as 200 m above the summit and drifted in multiple directions between 14-20 Ma...

The Japan Meteorological Agency (JMA) reported that an eruption at Iodake Crater (at Satsuma Iwo-jima, a subaerial part of Kikai?s NW caldera rim) was recorded at 0207 on 17 May, the first since 29 December 2025. An ash-and-gas plume rose 400 m above the crater rim and drifted S. The report noted th...

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported eruptive activity at Taal during 14-21 May. The seismic network recorded 3-15 daily volcanic earthquakes; the counts included 2-14 periods of tremor, each lasting 1-28 minutes, during 17-18 May. Daily diffuse gas-and-steam em...

The Rabaul Volcano Observatory (RVO) reported that the eruption in the Central Bismarck Sea that began at around 0115 on 8 May (based on regional infrasound data) continued during 13-20 May. During 13-14 May, plumes of steam and gas of variable densities and vigor rose from the eruption site and dri...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that unrest activity increased at Awu. During 1-18 May, seismicity increased, with 24 deep volcanic earthquakes and 519 shallow volcanic earthquakes recorded over the period. White plumes rose 100-200 m above the lava dome. Shallow ...

The Kamchatkan Volcanic Eruption Response Team (KVERT) reported increasing activity at Bezymianny and an explosive eruption during 13-20 May. On 13 May the Aviation Color Code was raised to Orange (the second highest level on a four-level scale) due to hot avalanches descending the flanks and an int...

The Instituto Nacional de Sismolog�a, Vulcanologia, Meteorologia e Hidrolog�a (INSIVUMEH) reported that eruptive activity at Fuego continued during 14-21 May. Daily Strombolian explosions recorded by the seismic network, at rates of 5-12 per hour when reported, generated gas-and-ash plumes that rose...

The Alaska Volcano Observatory (AVO) reported that slow lava effusion continued to feed a thick flow in Great Sitkin?s summit crater during 14-20 May. Small earthquakes and rockfalls associated with the activity were periodically detected in seismic data. Lava-dome growth and resulting rockfalls wer...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity at Ibu continued during 14-20 May, with daily eruptive events recorded by the seismic network and by visual observation. Daily gray ash plumes rose 200-1,000 m above the summit and drifted in multiple directions. Incan...

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported continuing eruptive activity at Kanlaon during 14-20 May. The seismic network recorded 6-31 daily volcanic earthquakes including 20 episodes of tremor ranging from 4 to 61 minutes. Sulfur dioxide emissions ranged from 142 to ...

The Hawaiian Volcano Observatory (HVO) reported that the eruption within Kilauea?s Kaluapele summit caldera, characterized by episodic fountaining, incandescence, and intermittent spatter from craters along the SW margin of Halema?uma?u Crater, continued at variable levels during 14-20 May. On 14 Ma...

The Japan Meteorological Agency (JMA) reported decreasing unrest at Kusatsu-Shiranesan?s Yugama crater. The report noted that volcanic tremors had not been detected after November 2025 and the chemistry of fumaroles also indicated decreased activity. Seismicity had remained low since March 2026 and ...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity continued at Lewotobi Laki-Laki during 14-20 May. Non-harmonic tremor continued, but surface activity remained low; no eruptions or rockfalls were detected seismically. White steam-and-gas plumes rose as high as 200 m ...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported ongoing eruptive activity at Lewotolok during 14-20 May. Daily white plumes rose as high as 50 m above the summit with up to 13 daily eruptive events recorded by the seismic network. Rumbling was reported on 15 May. The Alert Level ...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that eruptive activity at Marapi (on Sumatra) continued during 14-20 May. Gray plumes rose as high as 100 m above the summit on several days and drifted in multiple directions. On 16 May, a gray eruption plume rose to around 500 m a...

The Philippine Institute of Volcanology and Seismology (PHIVOLCS) reported that the eruption at Mayon continued during 14-20 May, characterized by lava effusion, pyroclastic density currents (PDCs), incandescent rockfalls, and ash-and-gas plumes. There were also short periods of lava fountaining dur...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that the eruption of Merapi volcano (on Java) continued during 14-20 May with occasional avalanches from the active lava dome on the upper SW flank. White plumes rose as high as 400 m above the summit on most days and drifted in all...

The Centro de Informa��o e Vigil�ncia Sismovulc�nica dos A�ores (CIVISA) reported a renewal of low-magnitude seismic activity off the NW coast of Pico, in a NE-SW zone along the Faial-Pico channel, W of Madalena to N of Lagido, and encompassing the Cachorro Submarine Volcanic System. The earthquake ...

The Servicio Geologico Colombiano (SGC) reported ongoing low-level eruptive activity at Purac� during 12-18 May. Seismic activity associated with rock fracturing processes was mainly located beteen Piocollo and Purac� volcanoes at depths of 1-2 km, with magnitudes less than 1.6; the level of seismic...

The Instituto Geof�sico del Per�?s (IGP) Centro Vulcanol�gico Nacional (CENVUL) reported continuing eruptive activity at Sabancaya during 11-17 May. The seismic network detected 38 seismic events related to the movement of magmatic fluids and additional earthquakes indicating rock fracturing. No exp...

The Instituto Nacional de Sismolog�a, Vulcanolog�a, Meteorolog�a e Hidrolog�a (INSIVUMEH) reported ongoing eruptive activity at Santa Maria?s Santiaguito dome complex during 14-20 May. Incandescence on the Caliente dome was sometimes observed during dark hours. Daily explosions, 0-4 per hour when re...

The Pusat Vulkanologi dan Mitigasi Bencana Geologi (PVMBG) reported that activity continued at Semeru during 14-20 May, with daily eruptive events recorded by the seismic network. White-to-gray or gray ash plumes rose 500-1,000 m above the summit and drifted in multiple directions during 14, 16-17, ...

The Kamchatkan Volcanic Eruption Response Team (KVERT) reported continuing eruptive activity at the lava domes along the N crater floor of Young Sheveluch (on the SW flank of Old Sheveluch) during 13-20 May. A thermal anomaly was identified in satellite images on most days; weather clouds occasional...

The Japan Meteorological Agency (JMA) reported that eruptive activity at Suwanosejima's Ontake Crater continued during 8-15 May. Incandescence was observed nightly in webcam images. Eruptive events on 13 and 15 May produced eruption plumes that rose as high as 600 m above the crater rim. Ashfall was...