Monthly Seismicity Report For July 1, 2019 to July 31, 2019

During the month of July 2019, the Alaska Earthquake Center reported 4546 earthquakes within the state. The largest earthquakes were magnitude 5.4 that occurred on July 9 at 10:43:43 AKST (July 9, 18:43:43 UTC), 93 miles E of Nikolski in Fox Islands, and M5.3 100km NNE of Arctic Village in NE Brooks Range. There were also seven earthquakes of M4.5-4.9 all over Alaska from NE Brooks Range in the north to Offshore Kodiak in the south, at Purcell Mountains, Cook Inlet at Pohoe and Homer, and in Rat Islands in western Aleutians. There is ongoing glacial activity in Prince William Sound, Icy Bay and Yakutat Bay. At least twelve events were felt in July.

Notable Events in Descending Order of Magnitude

Magnitude 5.4, 51 miles SE of Okmok Caldera, July 9 08:43:43 AKST
Magnitude 5.3, 72 miles N of Arctic Village, July 2 18:38:22 AKST
Magnitude 4.7, 1 miles SW of Kasilof, July 3 12:29:26 AKST
Magnitude 4.6, 10 miles SW of Nanwalek, July 2 09:30:01 AKST
Magnitude 4.6, 72 miles N of Arctic Village, July 2 18:58:55 AKST
Magnitude 4.5, 43 miles S of Shungnak, July 2 08:17:08 AKST
Magnitude 4.5, 50 miles S of Mt. Sergief, July 26 11:14:48 AKST
Magnitude 4.4, 151 miles SE of Kodiak, July 7 06:03:35 AKST
Magnitude 4.4, 30 miles SW of Amchitka, July 29 20:36:33 AKST
Magnitude 4.4, 58 miles S of Port Alexander, July 4 02:51:36 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 authroized or unauthorized use.

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