WEEK SEISMICITY REPORT FOR JULY 4, 2022 TO JULY 10, 2022
During the week of July 4, 2022, the Alaska Earthquake Center reported 1025 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. All other events greater than 3.5 occurred along the subduction zone except for a M5.2 48 miles S of St. George, a M4.4 6 miles W of Tatitlek, a M4.4 11 miles NW of Iliamna Volcano, and a M4.2 53 miles S of St. George. There was a swarm of 37 earthquakes in the area surrounding St George Island from July 4th through July 7th, 25 of which were aftershocks of the M5.2 earthquake. Areas of ongoing seismicity include the Purcell Mountain swarm, Kaktovic, offshore Kodiak, and Simeonof-Chignik zones. There were 9 icequakes recorded in Prince William Sound and Wright Glacier. Three events were reported as felt.
NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE
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 4.4, 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 4.2, 53 miles S of St. George, July 4 01:39:18 AKST
Magnitude 4.2, 46 miles SE of Yantarni Volcano, July 5 05:15:15 AKST
Magnitude 4.2, 35 miles SW of Atka Pass, July 10 12:57:32 AKST
Magnitude 4.1, 49 miles S of St. George, July 4 20:25:30 AKST
Magnitude 4.1, 13 miles SE of Atka, July 8 14:53:46 AKST
This report was compiled by R. Wilkes
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.