The Weekly Volcanic Activity Report: June 4-10, 2026
New activity/unrest was reported for 3 volcanoes from June 4-10, 2026. During the same period, ongoing activity was reported for 21 volcanoes.
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June 10 derecho produces widespread wind damage, tornadoes, and large hail across Midwest and Great Lakes
The Storm Prediction Center (SPC) said a fast-moving convective system that crossed parts of the Midwest and Great Lakes on June 10, 2026, has been preliminarily classified as a derecho after producing widespread wind damage, downed power lines, and measured gusts exceeding 145 km/h (90 mph).
Major explosion recorded at Stromboli volcano, Italy
Italy’s National Institute of Geophysics and Volcanology (INGV) reported a major explosion at Stromboli volcano at 07:12 LT (05:12 UTC) on June 12, 2026.
One dead, hundreds of thousands without power after tornadoes and severe storms hit Midwest and Northeast
Severe storms that produced damaging tornadoes outside Chicago killed one person in Iowa, damaged communities in Illinois and Indiana, and left hundreds of thousands without power across the Midwest and Northeast on Thursday, June 11, 2026. As of 03:00 CDT (08:00 UTC) on Friday, more than 650 000 customers were without power across 8 states, including at least 250 000 in Illinois and 170 000 in Indiana.
Pumice from Titan Ridge eruption blocks sea access in Manus Province, Papua New Guinea
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.
Severe thunderstorm outbreak forecast across Midwest and Great Lakes
A severe thunderstorm outbreak is forecast across parts of the Midwest and Great Lakes this afternoon and evening, with the highest risk focused on northern Illinois, far eastern Iowa, and far southern Wisconsin.
Severe thunderstorms damage more than 150 buildings in Slovenia before spreading into Croatia
Severe thunderstorms damaged more than 150 buildings in Slovenia on June 10, 2026, before the same weather system moved into northern Croatia overnight into June 11, bringing damaging wind, hail, and heavy rainfall.
Strong and shallow M6.1 earthquake hits Cuba region
A strong and shallow earthquake registered by the USGS as M6.1 hit the Cuba region at 18:00 UTC on June 8, 2026. The agency is reporting a depth of 10 km (6.2 miles). EMSC is reporting M6.1 at a depth of 13 km (8 miles). According to PTWC, there is no significant tsunami threat from this earthquake.
Dry thunderstorms add ignition risk in New Mexico as Critical fire weather develops across the western U.S.
A multi-day fire-weather setup is developing across the Southwest, Great Basin and central Rockies, where the Storm Prediction Center and local National Weather Service offices forecast strong southwest winds, very low humidity, dry fuels and isolated dry thunderstorms through at least Tuesday, June 9.
M7.8 earthquake off southern Mindanao leaves at least 47 dead, over 680 injured and 12 600 homes damaged, Philippines
A M7.8 earthquake off southern Mindanao left at least 32 people dead, injured 134 others in preliminary civil-defense figures, and caused widespread damage in General Santos and nearby areas on June 8, 2026.
