MONTH SEISMICITY REPORT FOR OCTOBER 2022
During the month of October 2022, the Alaska Earthquake Center reported 4136 earthquakes within the state. The largest earthquake was magnitude 4.9 that occurred on October 26th at 01:30:51 AKST (October 26, 09:30:51 UTC), 32 miles S of Sand Point.
Twenty three more earthquakes had magnitude 4.0-4.8. There were 26 earthquakes reported as felt. The two largest numbers of DYFI responses, 600 and 327, came from the the M4.8 earthquake 44 miles SE of Sutton on October 6th, and the M4.2 28 miles E of Palmer on October 30th respectively. These earthquakes rattled the south-central Alaska.
We located earthquakes in Bering Sea: a M4.7 event 17 miles E of St George and a M4.2 and M3.7 39 miles S of Gambell in St Laurence Island.
In October, we also reported 191 ice quakes, primarily located in the Prince William Sound, Icy Bay and Yakutat Bay areas as well as glacier swarms near Wright Glacier NE of Juneau and Mt. Spurr's Pothole glacier, and 28 suspected quarry blasts.
We continue to monitor seismic activity within Anchorage, offshore Kodiak, Simeonof-Chignik, and Purcell Mt aftershock zones as well as crustal seismic activity in Brooks Range, Seward Peninsula and Bering Strait.
NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE
Magnitude 4.9, 32 miles S of Sand Point, October 26 01:30:52 AKST
Magnitude 4.8, 41 miles SE of Kantishna, October 5 14:16:50 AKST
Magnitude 4.8, 44 miles E of Sutton, October 6 12:43:14 AKST
Magnitude 4.8, 17 miles SE of Yunaska Island, October 9 16:54:03 AKST
Magnitude 4.8, 57 miles SE of Mt. Sergief, October 29 05:24:07 AKST
Magnitude 4.7, 78 miles S of Attu, October 7 22:12:13 AKST
Magnitude 4.7, 52 miles S of Makushin Volcano, October 11 14:07:33 AKST
Magnitude 4.7, 47 miles SE of Mt. Sergief, October 20 14:50:51 AKST
Magnitude 4.7, 17 miles E of St. George, October 26 08:25:29 AKST
Magnitude 4.7, 54 miles SE of Mt. Sergief, October 29 11:41:36 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.