Weekly Seismicity Report For October 22, 2018 to October 28, 2018

During the week of October 22, 2018, the Alaska Earthquake Center reported 863 earthquakes within the state. The largest earthquake was magnitude 5.3 that occurred on October 27 at 08:57:27 AKST (October 27, 16:57:27 UTC), 15 miles E of Tanana. 3 earthquakes were felt this week. An earthquake of note during this week is the magnitude 4.9 that occured 43 miles SW of Hooper Bay. This is the largest earthquake the center has ever recorded in the Yukon-Kuskokwim Delta region, and it was felt widely throughout the area. Other earthquakes of note is the ongoing cluster activity in the eastern Brooks Range and the ongoing aftershock sequence produced by the magnitude 7.9 Offshore Kodiak event on January 23rd.  

Notable Events in Descending Order of Magnitude

Magnitude 5.3, 15 miles E of Tanana
Magnitude 4.9, 43 miles SW of Hooper Bay
Magnitude 4.9, 151 miles SE of Kodiak
Magnitude 4.6, 52 miles S of Isanotski Peaks
Magnitude 4.2, 12 miles SW of Anchor Point
Magnitude 3.8, 18 miles SE of Fourpeaked Mountain
Magnitude 3.8, 17 miles NW of Brevig Mission
Magnitude 3.7, 52 miles NW of Mekoryuk
Magnitude 3.7, 22 miles SE of Mt. Gareloi
Magnitude 3.7, 34 miles S of Atka Pass

This report was compiled by M.Braun

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.