Magnitude 5.8 earthquake strikes 99 km SE of Atka, Alaska
A magnitude 5.8 earthquake struck 99 km southeast of Atka, Alaska, at 08:35:18 GMT on Sunday, July 26, 2026. The U.S. Geological Survey (USGS) issued a green PAGER alert level for the event, indicating a low likelihood of fatalities and economic losses. The peak modeled instrumental intensity was 4.174, suggesting that shaking in the epicentral area would have been light to moderate and likely felt by some people indoors, potentially causing dishes and windows to rattle, but generally without causing significant damage.
The earthquake occurred at a depth of 10 kilometers. Despite the notable magnitude, no felt reports have been submitted to the USGS. This is common in regions with sparse populations where fewer people use the reporting system. The USGS assigned a significance score of 518 out of 1000 to this event.