Weekly Seismicity Report For October 9, 2017 to October 15, 2017

During the week of October 9, 2017, the Alaska Earthquake Center reported 669 earthquakes within the state. The largest earthquake was magnitude 4.5 that occurred on October 13 at 08:00:48.886 UTC (October 13, 00:00:48.886 AKDT), 91 miles ESE of Amukta Pass. 1 event was felt.

Notable Events in Descending Order of Magnitude


October 13 at 08:00:48.886 UTC (October 13, 00:00:48.886 AKDT), Ml 4.5, 51.82N -170.04W, depth=4.9 km:
A light earthquake was located in FOX ISLANDS, ALEUTIAN ISLANDS.
This earthquake was:
91 miles (147 km) ESE of Amukta Pass
92 miles (148 km) SSW of Nikolski
179 miles (288 km) E of Atka
204 miles (328 km) SW of Unalaska

October 13 at 23:31:49.481 UTC (October 13, 15:31:49.481 AKDT), Ml 4.4, 52.32N -169.61W, depth=18.0 km:
A light earthquake was located in FOX ISLANDS, ALEUTIAN ISLANDS.
This earthquake was:
53 miles ( 85 km) SW of Nikolski
101 miles (162 km) E of Amukta Pass
167 miles (268 km) SW of Unalaska
168 miles (270 km) SW of Dutch Harbor

October 12 at 08:23:03.892 UTC (October 12, 00:23:03.892 AKDT), Ml 4.4, 52.00N -170.05W, depth=45.3 km:
A light earthquake was located in FOX ISLANDS, ALEUTIAN ISLANDS.
This earthquake was:
82 miles (132 km) SW of Nikolski
86 miles (138 km) ESE of Amukta Pass
177 miles (284 km) E of Atka
195 miles (314 km) SW of Unalaska

October 12 at 00:01:54.402 UTC (October 11, 16:01:54.402 AKDT), Ml 4.3, 54.60N -155.88W, depth=2.7 km:
A light earthquake was located in SOUTH OF ALASKA.
This earthquake was:
153 miles (246 km) SE of Chignik
157 miles (253 km) SE of Perryville
159 miles (256 km) SE of Chignik Lagoon
175 miles (281 km) SSW of Akhiok

October 13 at 07:10:32.494 UTC (October 12, 23:10:32.494 AKDT), Ml 4.3, 51.57N -178.43W, depth=4.7 km:
A light earthquake was located in ANDREANOF ISLANDS, ALEUTIAN IS..
This earthquake was:
79 miles (127 km) WSW of Adak
111 miles (178 km) E of Amchitka
185 miles (298 km) WSW of Atka
246 miles (396 km) E of Buldir Is

October 15 at 06:50:30.676 UTC (October 14, 22:50:30.676 AKDT), Ml 4.2, 56.55N -168.36W, depth=29.7 km:
A light earthquake was located in PRIBILOF ISLANDS, ALASKA REGION.
This earthquake was:
74 miles (119 km) SE of St. George
93 miles (149 km) SE of St. Paul
196 miles (315 km) NNW of Akutan
198 miles (318 km) NNW of Dutch Harbor

October 12 at 05:51:17.789 UTC (October 11, 21:51:17.789 AKDT), Ml 4.2, 57.76N -156.35W, depth=124.0 km:
A light earthquake was located in ALASKA PENINSULA.
This earthquake was:
48 miles ( 77 km) ENE of Pilot Point
49 miles ( 78 km) SE of Egegik
65 miles (104 km) S of King Salmon
69 miles (112 km) SSE of South Naknek

October 9 at 22:52:07.920 UTC (October 9, 14:52:07.920 AKDT), Ml 4.0, 53.26N -167.01W, depth=81.1 km:
A light earthquake was located in FOX ISLANDS, ALEUTIAN ISLANDS. It was felt in Unalaska.
This earthquake was:
47 miles ( 75 km) SSW of Unalaska
48 miles ( 77 km) SSW of Dutch Harbor
79 miles (127 km) SW of Akutan
80 miles (129 km) ENE of Nikolski

October 13 at 07:14:12.213 UTC (October 12, 23:14:12.213 AKDT), Ml 3.9, 51.59N -178.43W, depth=6.5 km:
A minor earthquake was located in ANDREANOF ISLANDS, ALEUTIAN IS..
This earthquake was:
78 miles (126 km) WSW of Adak
111 miles (178 km) E of Amchitka
185 miles (297 km) W of Atka
246 miles (395 km) E of Buldir Is

October 11 at 06:05:20.580 UTC (October 10, 22:05:20.580 AKDT), Ml 3.9, 61.59N -141.08W, depth=10.3 km:
A minor earthquake was located in SOUTHERN ALASKA.
This earthquake was:
53 miles ( 85 km) SE of Chisana
62 miles ( 99 km) E of McCarthy
76 miles (122 km) WNW of Burwash Landing
83 miles (133 km) SE of Nabesna

October 13 at 07:39:22.711 UTC (October 12, 23:39:22.711 AKDT), Ml 3.7, 51.84N -170.03W, depth=37.7 km:
A minor earthquake was located in FOX ISLANDS, ALEUTIAN ISLANDS.
This earthquake was:
90 miles (145 km) SSW of Nikolski
91 miles (146 km) ESE of Amukta Pass
179 miles (288 km) E of Atka
202 miles (325 km) SW of Unalaska

October 15 at 16:09:25.485 UTC (October 15, 08:09:25.485 AKDT), Ml 3.7, 63.18N -172.30W, depth=32.3 km:
A minor earthquake was located in BERING SEA.
This earthquake was:
45 miles ( 72 km) SSW of Gambell
66 miles (107 km) WSW of Savoonga
203 miles (327 km) SSW of Little Diomede
204 miles (329 km) N of St. Matthew Is

October 13 at 07:33:32.758 UTC (October 12, 23:33:32.758 AKDT), Ml 3.5, 51.68N -179.24W, depth=96.2 km:
A minor earthquake was located in ANDREANOF ISLANDS, ALEUTIAN IS..
This earthquake was:
76 miles (122 km) E of Amchitka
112 miles (179 km) W of Adak
210 miles (338 km) E of Buldir Is
218 miles (350 km) W of Atka

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 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 damages resulting from its authorized or unauthorized use.

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