Sakurajima eruption sends heavy ash over Kagoshima City, Japan
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.
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The Weekly Volcanic Activity Report: May 28-June 3, 2026
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.
Explosive eruption at Sheveluch sends ash to 12 km (39 400 feet), Red aviation code issued, Russia
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.
NASA ends ISS safe haven procedure after Roscosmos pauses Zvezda tunnel repairs
NASA instructed crew members aboard the International Space Station to end safe haven procedures and return to planned operations on June 5, 2026, after Roscosmos paused structural repair work inside the Zvezda service module transfer tunnel, known as PrK, while additional measurements and data are assessed.
G3 – Strong Geomagnetic Storm Watch issued for June 4 and 5 following three significant solar flares
A G3 – Strong Geomagnetic Storm Watch is in effect for June 4 and 5, 2026, following three significant solar flares from Active Region 4455. NOAA’s Space Weather Prediction Center (SWPC) issued the watch at 14:52 UTC on June 3 after Earth-directed CME components were identified from two eruptions earlier in the day.
X1.0 solar flare erupts from geoeffective Region 4455
An X1.0 solar flare erupted from Active Region 4455 at 11:28 UTC on June 3, 2026, producing R3 – Strong radio blackout conditions on the sunlit side of Earth. This is the third major flare from the same region today, following M9.3 at 01:36 UTC and M7.7 at 07:00 UTC.
M9.3 and M7.7 solar flares erupt from AR 4455, launching Earth-directed CMEs
A strong solar flare measuring M9.3 at its peak erupted from Active Region 4455 at 01:36 UTC on June 3, 2026, producing an Earth-directed coronal mass ejection (CME). The event started at 01:22 UTC and ended at 01:43 UTC. At 07:00 UTC, another strong solar flare — M7.7 — erupted from the same region and produced another Earth-directed CME.
Kīlauea sets lava-fountaining record with episode 48, Hawaii
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.
Ashfall advisory issued as Kīlauea episode 48 begins at north vent, Hawaii
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.
Strong and shallow M6.0 earthquake hits near Valparaíso, Chile
A shallow earthquake registered by the USGS as M6.0 hit offshore Valparaíso, Chile at 21:34 UTC (17:34 LT) on May 31, 2026. The agency is reporting a depth of 15.7 km (9.8 miles). EMSC is reporting M6.0 at a depth of 16 km (9.9 miles).
