Shallow M6.0 earthquake hits Fox Islands, Alaska
A shallow earthquake registered by the USGS as M6.0 hit Fox Islands, Aleutian Islands, Alaska at 20:57 UTC on September 3, 2025. The agency is reporting a depth of 10 km (6.2 miles).
Alert level raised as unrest increases at Shishaldin volcano, Alaska
The Alaska Volcano Observatory (AVO) raised the Volcano Alert Level for Shishaldin volcano, Alaska, to Advisory and the Aviation Color Code to Yellow at 11:48 AKDT (19:48 UTC) on August 25, 2025, following increased seismicity, gas emissions, and vapor activity.
Mount Spurr quiets after prolonged unrest, alert and aviation codes downgraded
The Alaska Volcano Observatory lowered the Volcano Alert Level for Mount Spurr to Normal and the Aviation Color Code to Green at 10:07 AKDT (18:07 UTC) on August 20, 2025, following a gradual decline in unrest and the absence of ground deformation since March 2025.
Preemptive disaster declaration issued for Juneau region as Suicide Basin overtops near Mendenhall Glacier, Alaska
Suicide Basin above Mendenhall Glacier in Juneau, Alaska, began overtopping its ice dam at about 19:00 LT on August 10, 2025, triggering a unified emergency response and a state disaster declaration the same day ahead of an expected glacial lake outburst flood (GLOF).
Large submarine landslide discovered northwest of 1957 M8.6 Andreanof Islands earthquake epicenter
A massive submarine landslide structure was discovered along the southern slope of the Aleutian Shelf, about 16 km (10 miles) northwest of the 1957 M8.6 Andreanof Islands earthquake epicenter.
Large landslide triggers localized tsunami in Tracy Arm, Alaska
A large landslide hit Tracy Arm, Southeast Alaska at approximately 05:30 LT (13:30 UTC) on August 10, 2025, generating a localized tsunami, according to the Alaska Earthquake Center.
Strong M6.2 earthquake hits near Sand Point days after M7.3, Alaska
A strong earthquake registered by the USGS as M6.2 hit south of Sand Point, Alaska at 22:28 UTC on July 20, 2025. The agency is reporting a depth of 47.3 km (29 miles). EMSC is reporting the same magnitude and depth. The quake hit four days after powerful M7.3 struck the same region, triggering a Tsunami Warning.
Very strong M7.3 earthquake hits Alaska Peninsula, Tsunami Warning issued
A very strong earthquake registered by the USGS as M7.3 hit Alaska Peninsula at 20:37 UTC on July 16, 2025. The agency is reporting a depth of 20 km (12.4 miles). EMSC is reporting the same magnitude and depth.
Cruise ship dislodged during first ever Severe Thunderstorm Warning for Juneau, Alaska
A severe storm triggered the first-ever Severe Thunderstorm Warning for Juneau, Alaska on Monday, June 16, 2025. The storm brought wind gusts up to 95 km/h (60 mph) and hail, damaging trees and infrastructure and forcing a docked cruise ship adrift into Gastineau Channel.
Volcanic unrest persists at Mount Spurr with elevated seismicity and surface deformation, Alaska
Volcanic unrest continues at Mount Spurr, Alaska, with elevated seismic activity, surface deformation, persistent gas emissions, and visible summit steaming. The current unrest indicates that new magma has intruded into the Earth’s crust beneath the volcano and that the probability of an eruption has increased. The last known eruption at this volcano took place in 1992 (VEI 4).
