Weekly Seismicity Report For August 5, 2019 to August 11, 2019

During the week of August 5, 2019, the Alaska Earthquake Center reported 972 earthquakes within the state. The largest earthquake was magnitude 4.3 that occurred on August 10 at 13:38:56 AKST (August 10, 21:38:56 UTC), 62 miles SE of Nikolski. Three earthquakes of M3.9-4.2 occured at Semisopochnoi Island, Andreanof Islands. A M4.0 occured 3 km SE of Big Lake, it was an aftershock of M7.1 Anchorage earthquake on November 30, 2018. Another M4.0 was located in SE Alaska, 52 miles W of Elfin Cove. There were also a M3.6 Kaktovik aftershock and M3.5 event in Bering Sea, 111 miles SW of St.Paul. Three events were felt.

Notable Events in Descending Order of Magnitude

Magnitude 4.3, 62 miles SE of Nikolski, August 10 11:38:56 AKST
Magnitude 4.0, 29 miles E of Amchitka, August 5 16:27:22 AKST
Magnitude 4.0, 16 miles W of Wasilla, August 5 07:59:58 AKST
Magnitude 4.0, 52 miles W of Elfin Cove, August 5 01:46:08 AKST
Magnitude 3.9, 21 miles S of Yunaska Island, August 5 02:32:56 AKST
Magnitude 3.8, 66 miles SE of Herbert Island, August 4 20:48:17 AKST
Magnitude 3.8, 71 miles SW of Amchitka, August 4 14:08:43 AKST
Magnitude 3.7, 11 miles SE of Semisopochnoi Island, August 9 09:45:32 AKST
Magnitude 3.6, 50 miles SW of Kaktovik, August 10 15:45:01 AKST
Magnitude 3.5, 111 miles SW of St. Paul, August 6 03:12:12 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.