During the month of July 2022, the Alaska Earthquake Center reported 3871 earthquakes within the state. The largest earthquake was magnitude 5.3 that occurred on July 8 at 01:40:19 AKST (July 8, 09:40:19 UTC), 8 miles E of Koniuji Island (Andreanof islands). A crustal earthquake of M5.2 was recorded at St George Island in Bering Sea, followed by about 40 aftershocks of M2.5-4.2. All other events of magnitude greater than 4.0 occurred along the subduction zone. We continue to monitor seismic activity within  Anchorage, offshore Kodiak, Simeonof-Chignik aftershock zones as well as crustal seismic activity in  Brooks Range and Bering Strait. About 50 icequake were recorded in Prince William Sound, Icy Bay, Yakutat Bay and Mt Ogden. Ten earthquakes were reported as felt in July.


Magnitude 5.3, 8 miles E of Koniuji Island, July 8 01:40:20 AKST
Magnitude 5.2, 48 miles S of St. George, July 4 01:17:41 AKST
Magnitude 4.8, 48 miles SW of Buldir Is, July 6 09:07:31 AKST
Magnitude 4.8, 9 miles SE of Tyonek, July 11 23:24:58 AKST
Magnitude 4.7, 26 miles S of Adak, July 3 12:33:16 AKST
Magnitude 4.4, 11 miles NW of Iliamna Volcano, July 4 13:11:32 AKST
Magnitude 4.4, 6 miles W of Tatitlek, July 9 02:56:02 AKST
Magnitude 4.4, 14 miles SE of Moose Pass, July 11 18:58:59 AKST
Magnitude 4.4, 172 miles SE of Kodiak, July 15 14:33:35 AKST
Magnitude 4.4, 21 miles SE of Semisopochnoi Island, July 19 18:11:26 AKST

This report was compiled by N.Kozyreva

The data in this report are preliminary and subject to revision. The earthquake parameters have been determined by the AEC, with supplemental data provided by the USGS National Earthquake Information Center. The data are released on the condition that none of the cooperating agencies may be held liable for any damaged resulting from its authorized or unauthorized use.

For more information on earthquakes and seismology, contact the AEC at 907-474-7320.