During the month of September 2022, the Alaska Earthquake Center reported 3603 earthquakes within the state. The largest earthquake was magnitude 5.1 that occurred on September 20 at 00:37:39 AKST (September 20, 08:37:39 UTC), 76 miles E of Chignik. It was an aftershock of July 28, 2021 M8.2 Chignik earthquake. Also there were two other M5.0 earthquakes: in Rat Islands on September 26th and in Icy Bay on September 29th.

Eleven earthquakes had magnitude of 4.0-4.9, four of which occurred in mainland  Alaska. The most notable of them were a magnitude 4.8 on September 24th  36 miles NE of Valdez, and  a magnitude 4.5   on September 18th  in the Minto Seismic zone 45 miles W of Fairbanks,  These earthquakes rattled interior, and many felt reports from Alaska communities were submitted.

We continue to monitor seismic activity within  Anchorage, offshore Kodiak, Simeonof-Chignik aftershock zones as well as crustal seismic activity in Brooks Range, Seward Peninsula and  Bering Strait. We also located about 90 ice quakes, 28 suspected quarry blasts, and 16 events as possible landslides. Ten earthquakes were reported as felt.