Update: Seismic activity on Sept. 1 – 5.0 magnitude earthquake near Old Harbor, AK reported

Published Sep 30, 2025

KODIAK ISLAND BOROUGH, AK — A 5.0 magnitude quake was detected close to Old Harbor Monday morning, according to the U.S. Geological Survey.

At 11:02 a.m. (1:02 a.m. local time), the region was shaken by a tremor. The earthquake jolted at a depth of 11 miles, with its epicenter about 81 miles southeast of Old Harbor. Seismologists first reported it as a 2.1 event, but later upgraded it to 5.0.

In response to the quake, the National Tsunami Center issued a Tsunami statement. For the most recent details, please check tsunami.gov.

Did you feel it?

If you experienced the tremor, you can submit a report via the USGS Felt Report form.

Impact and estimated losses

Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.

Structure information summary
Overall, the population in this region resides in structures that are resistant to earthquake shaking, though vulnerable structures exist. The predominant vulnerable building types are unreinforced brick masonry and reinforced masonry construction.

Source: The U.S. Geological Survey