Large floating pumice accumulations from the Titan Ridge submarine eruption have inundated coastal villages in Manus Province, Papua New Guinea, this week, blocking sea access and preventing boat movement.
An eruption at Sakurajima’s Minamidake summit crater sent heavy ash over Kagoshima City, Japan, on June 7, 2026, with a plume reaching about 1 300 m (4 300 feet) above the crater.
New activity/unrest was reported for 3 volcanoes from May 28-June 3, 2026. During the same period, ongoing activity was reported for 20 volcanoes.
Sheveluch volcano on Russia’s Kamchatka Peninsula produced an explosive eruption at 08:00 UTC on June 6, 2026, sending ash to about 12 km (39 400 feet) above sea level and triggering a Red aviation color code.
Kīlauea’s ongoing summit eruption reached its 48th lava-fountaining episode in Halemaʻumaʻu crater, Hawaii, at 04:40 HST (14:40 UTC) on June 1, 2026, setting a written-record benchmark for episodic lava fountaining during a single Kīlauea eruption, according to the USGS Hawaiian Volcano Observatory (HVO). The episode ended abruptly at 13:37 HST (23:37 UTC) after just under 9 hours of continuous fountaining from the north vent, and the eruption was paused afterward.
The National Weather Service (NWS) in Honolulu issued an Ashfall Advisory for Hawaiʻi Volcanoes National Park and areas to the north and northeast, including Volcano and Mountain View, after Kīlauea’s episode 48 lava fountaining began inside Halemaʻumaʻu crater on June 1, 2026.
New activity/unrest was reported for 4 volcanoes from May 21-27, 2026. During the same period, ongoing activity was reported for 18 volcanoes.
A submarine eruption that began on May 8, 2026, continues in the central Bismarck Sea, about 130 km (81 miles) southeast of Manus Island, Papua New Guinea. The eruption revealed a previously unmapped underwater volcano, now provisionally named Titan Ridge Volcano, in a remote and tectonically active area of the Pacific Ocean.
Authorities in Michoacán, Mexico, evacuated a residence and nearby homes and suspended classes at a nearby preschool after hot water, steam, mud, and gases vented from the ground at a residential property in the community of El Salitre, municipality of Ixtlán, during the night of May 25–26, 2026. Protección Civil described the phenomenon as hydrothermal activity under assessment.
New activity/unrest was reported for 7 volcanoes from May 14 to 20, 2026. During the same period, ongoing activity was reported for 20 volcanoes.
