WEEK SEISMICITY REPORT FOR NOVEMBER 14, 2022 TO NOVEMBER 20, 2022

During the week of November 14, 2022, the Alaska Earthquake Center reported 1144 earthquakes within the state. The largest earthquake was magnitude 4.9 that occurred on November 17 at 15:03:09 AKST (November 18, 00:03:09 UTC), 13 miles NW of Anchorage.

Other notable events include a M4.1 earthquake that occurred on November 16, 2022 at 11:27:00 AKST and was located 25 miles E of Denali Park at a depth of 5.8 miles and a M4.0 earthquake that occurred on November 17, 2022 at 13:34:41 AKST and was located 9 miles W of Salcha at a depth of 9.1 miles. Both of these earthquakes were felt widely in the interior.  A M4.0 earthquake that occurred on November 19, 2022 10:12:06 AKST was located 206 miles E of Kaktovik in the Beaufort Sea region at a depth of 25.0 miles.

We observed continued increased activity within the Purcell Mountains swarm region with over 35 events located during this week, ranging in magnitudes between 0.8 - 2.3 (most events occurred on November 14th and 18th).

We also observed activity under the Tanaga volcano with 67 shallow events (depth 1 to 8 miles), located this week between November 18th and November 20th.  These event range in magnitude from M1.5 to M4.2

There were 42 icequakes recorded in the southern and southeast Alaska including Prince William Sound, Ice Bay, and Yakutat regions.

6 events were reported as felt with magnitudes ranging between M2.3 to M4.9

NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE


Magnitude 4.9, 13 miles NW of Anchorage, November 17 15:03:10 AKST
Magnitude 4.6, 2 miles SW of Novarupta, November 20 05:35:34 AKST
Magnitude 4.2, 21 miles NW of Tanaga Volcano, November 14 07:15:29 AKST
Magnitude 4.2, 7 miles E of Tanaga Volcano, November 19 00:42:38 AKST
Magnitude 4.1, 25 miles E of Denali Park, November 16 11:27:00 AKST
Magnitude 4.0, 94 miles SW of Akhiok, November 14 11:20:00 AKST
Magnitude 4.0, 9 miles W of Salcha, November 17 13:34:41 AKST
Magnitude 4.0, 4 miles N of Little Sitkin Pass, November 17 13:40:38 AKST
Magnitude 4.0, 206 miles E of Kaktovik, November 19 10:12:06 AKST
Magnitude 3.9, 124 miles S of Mt. Gareloi, November 17 08:44:47 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.