In August of 2025, the Alaska Earthquake Center reported 2255 earthquakes within the state, with magnitudes ranging from 1.1 to 5.9. There were 15 events this month of magnitude 4.0 or greater, the largest of which was an earthquake of magnitude 5.9 that occurred on August 28 at 03:07:47 AKST (August 28, 11:07:47 UTC), 19 miles NE of Semisopochnoi Island.

On August 10, 2025 at 5:36 a.m. AKDT, a large-scale landslide occurred near the South Sawyer Glacier in the Tracy Arm fjord, with the estimated volume of displaced material being larger than 100 million cubic meters. After this landslide occurred, several tsunami-sized waves in the area were reported. More than 100 precursor landslide events were detected in the region leading up to the M5.4 landslide. For more information on this Tracy Arm event, visit the "Significant Events" page for it here.

The aftershock sequence of July 16th's M7.3 earthquake near Sand Point continued through this month, generating nearly 500 aftershock events ranging from 1.4 to 5.0 in magnitude. For more information regarding Sand Point's mainshock and aftershock sequences, please visit the "Significant Event" page here.

There were 11 earthquakes reported as felt in August.