MONTH SEISMICITY REPORT FOR JULY 2024

During the month of July 2024, the Alaska Earthquake Center reported 3410 earthquakes within the state with magnitudes ranging between 0.7 and 6.0 and depths between 0 and 268 km  The largest earthquake was magnitude 6.0 that occurred on July 18 at 19:13:46 AKDT (July 19, 03:13:46 UTC), 41 miles S of Chagulak Island. There were 15 other earthquakes of magnitude 4.3-5.4.

We reported 84 seismic events other than regional tectonic earthquakes. Of these 25 were suspected quarry blasts (magnitudes M=0.9-1.5), most of which were located in the vicinity of either Fort Knox or Usibelli mines in Interior Alaska. The reported events included 31 icequakes (magnitudes M=0.8-2.9), primarily located in the Prince William Sound, Icy Bay, Yakutat Bay areas, and at Wright Glacier (Mt. Ogden). We also recorded 26 events associated with volcanic activity and 2 landslides.

Eight earthquake were reported as felt in July. The largest number of Did You Feel It responses, 122, came from earthquake of M3.8 in the Kenai Peninsula, 36 miles E from Homer, on July 11th at 21:26 pm of AKDT.

NOTABLE EVENTS IN DESCENDING ORDER OF MAGNITUDE


Magnitude 6.0, 41 miles S of Chagulak Island, July 18 19:13:46 AKDT
Magnitude 4.9, 11 miles SE of Little Sitkin Pass, July 16 11:51:14 AKDT
Magnitude 4.8, 36 miles SE of Mt. Sergief, July 28 20:49:27 AKDT
Magnitude 4.7, 58 miles SE of Akutan, July 12 18:28:51 AKDT
Magnitude 4.7, 89 miles SE of Perryville, July 23 00:17:57 AKDT
Magnitude 4.6, 47 miles S of Chagulak Island, July 2 16:20:37 AKDT
Magnitude 4.6, 108 miles S of Adak, July 23 19:09:21 AKDT
Magnitude 4.6, 42 miles SE of Yakutat, July 31 00:20:44 AKDT
Magnitude 4.5, 18 miles SE of Redoubt Volcano, July 27 10:12:15 AKDT
Magnitude 4.2, 68 miles SE of Seldovia, July 10 01:00:12 AKDT

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.