Weekly Seismicity Report For
April 24, 2017 to April 30, 2017

During the week of April 24, 2017, the Alaska Earthquake Center reported 908 earthquakes within the state. The largest earthquake was magnitude 5.4 that occurred on April 27 at 14:46:31.675 UTC (April 27, 06:46:31.675 AKDT), 34 miles SSW of Amchitka. Four events were felt.

Notable Events in Descending Order of Magnitude

April 27 at 14:46:31.675 UTC (April 27, 06:46:31.675 AKDT), Ml 5.4, 51.08N 178.70W, depth=1.0 km:

   A moderate earthquake was located in RAT ISLANDS, ALEUTIAN ISLANDS.

    This earthquake was:

   34 miles ( 54 km) SSW of Amchitka

  147 miles (237 km)  SE of Buldir Is

  207 miles (334 km) WSW of Adak

  225 miles (363 km) ESE of Shemya

 

 April 29 at 11:15:48.898 UTC (April 29, 03:15:48.898 AKDT), Ml 5.2, 63.12N -151.17W, depth=11.9 km:

   A moderate earthquake was located in CENTRAL ALASKA.

   It was felt in Talkeetna, Canrwell, Healy, Chugiak, Palmer, Anchorage, and Fairbanks.

    This earthquake was:

   28 miles ( 46 km) SSW of Kantishna

   63 miles (101 km)  SE of Lake Minchumina

   65 miles (104 km) NNW of Talkeetna

   68 miles (109 km) ESE of Telida

 

 April 27 at 23:39:03.987 UTC (April 27, 15:39:03.987 AKDT), Ml 4.9, 51.04N 178.63W, depth=2.7 km:

   A light earthquake was located in RAT ISLANDS, ALEUTIAN ISLANDS.

    This earthquake was:

   38 miles ( 61 km) SSW of Amchitka

  147 miles (236 km)  SE of Buldir Is

  211 miles (340 km) WSW of Adak

  224 miles (361 km) ESE of Shemya

 

 April 24 at 07:25:31.523 UTC (April 23, 23:25:31.523 AKDT), Ml 4.7, 51.51N 179.10W, depth=64.9 km:

   A light earthquake was located in RAT ISLANDS, ALEUTIAN ISLANDS.

    This earthquake was:

    5 miles (  8 km) ESE of Amchitka

  147 miles (237 km) ESE of Buldir Is

  183 miles (295 km)   W of Adak

  227 miles (366 km) ESE of Shemya

 

 April 28 at 06:23:26.258 UTC (April 27, 22:23:26.258 AKDT), Ml 4.7, 51.43N -178.27W, depth=45.7 km:

   A light earthquake was located in ANDREANOF ISLANDS, ALEUTIAN IS..

    This earthquake was:

   76 miles (122 km) WSW of Adak

  118 miles (189 km)   E of Amchitka

  182 miles (292 km) WSW of Atka

  255 miles (411 km) ESE of Buldir Is

 

 April 27 at 14:44:30.466 UTC (April 27, 06:44:30.466 AKDT), Ml 4.5, 57.53N -154.94W, depth=11.0 km:

   A light earthquake was located in KODIAK ISLAND REGION, ALASKA.

    This earthquake was:

   18 miles ( 30 km)   W of Karluk

   36 miles ( 58 km)   W of Larsen Bay

   50 miles ( 80 km)  NW of Akhiok

   65 miles (105 km) WNW of Old Harbor

 

 April 27 at 15:58:49.309 UTC (April 27, 07:58:49.309 AKDT), Ml 4.3, 51.21N 178.62W, depth=29.2 km:

   A light earthquake was located in RAT ISLANDS, ALEUTIAN ISLANDS.

    This earthquake was:

   28 miles ( 44 km)  SW of Amchitka

  139 miles (224 km) ESE of Buldir Is

  208 miles (335 km)   W of Adak

  218 miles (350 km) ESE of Shemya

 

 April 26 at 03:29:10.198 UTC (April 25, 19:29:10.198 AKDT), Ml 4.1, 62.23N -149.35W, depth=41.7 km:

   A light earthquake was located in CENTRAL ALASKA.

   It was felt Talkeetna, Palmer, Eagle River, and Anchorage.

    This earthquake was:

   25 miles ( 41 km) ESE of Talkeetna

   32 miles ( 51 km)   N of Hatcher Pass

   39 miles ( 63 km) NNW of Sutton

   40 miles ( 65 km) NNE of Willow

 

 April 27 at 17:10:32.386 UTC (April 27, 09:10:32.386 AKDT), Ml 4.1, 57.53N -154.96W, depth=10.8 km:

   A light earthquake was located in KODIAK ISLAND REGION, ALASKA.

   It was felt in Larson Bay.

    This earthquake was:

   19 miles ( 31 km)   W of Karluk

   37 miles ( 59 km)   W of Larsen Bay

   50 miles ( 81 km)  NW of Akhiok

   66 miles (106 km) WNW of Old Harbor

 

 April 25 at 17:23:48.622 UTC (April 25, 09:23:48.622 AKDT), Ml 4.1, 55.00N -161.73W, depth=90.5 km:

   A light earthquake was located in ALASKA PENINSULA.

    This earthquake was:

   23 miles ( 38 km)   E of King Cove

   41 miles ( 67 km) ESE of Cold Bay

   54 miles ( 87 km) WSW of Sand Point

   68 miles (109 km)   E of False Pass

 

 April 29 at 12:10:54.967 UTC (April 29, 04:10:54.967 AKDT), Ml 4.0, 53.91N -163.09W, depth=12.7 km:

   A light earthquake was located in UNIMAK ISLAND REGION, ALASKA.

    This earthquake was:

   66 miles (107 km) SSE of False Pass

   85 miles (137 km) SSW of King Cove

   89 miles (144 km)   S of Cold Bay

  110 miles (177 km)   E of Akutan

 

 April 27 at 16:06:51.996 UTC (April 27, 08:06:51.996 AKDT), Ml 3.9, 50.83N 178.70W, depth=8.9 km:

   A light earthquake was located in RAT ISLANDS, ALEUTIAN ISLANDS.

    This earthquake was:

   50 miles ( 80 km) SSW of Amchitka

  159 miles (255 km)  SE of Buldir Is

  213 miles (342 km) WSW of Adak

  235 miles (378 km) ESE of Shemya

 

 April 30 at 11:04:42.221 UTC (April 30, 03:04:42.221 AKDT), Ml 3.9, 57.54N -154.92W, depth=1.6 km:

   A light earthquake was located in KODIAK ISLAND REGION, ALASKA.

    This earthquake was:

   17 miles ( 28 km)   W of Karluk

   35 miles ( 56 km)   W of Larsen Bay

   50 miles ( 80 km) NNW of Akhiok

   65 miles (104 km) WNW of Old Harbor

 

 April 30 at 11:03:56.873 UTC (April 30, 03:03:56.873 AKDT), Ml 3.9, 57.52N -154.93W, depth=9.0 km:

   A light earthquake was located in KODIAK ISLAND REGION, ALASKA.

    This earthquake was:

   18 miles ( 29 km)   W of Karluk

   35 miles ( 57 km)   W of Larsen Bay

   49 miles ( 79 km)  NW of Akhiok

   65 miles (104 km) WNW of Old Harbor

 

 April 25 at 06:52:30.315 UTC (April 24, 22:52:30.315 AKDT), Ml 3.8, 51.80N -175.27W, depth=62.8 km:

   A minor earthquake was located in ANDREANOF ISLANDS, ALEUTIAN IS..

    This earthquake was:

   53 miles ( 85 km) WSW of Atka

   59 miles ( 95 km)   E of Adak

  144 miles (232 km) WSW of Amukta Pass

  246 miles (396 km)   E of Amchitka

 

 April 29 at 08:18:32.375 UTC (April 29, 00:18:32.375 AKDT), Ml 3.7, 51.49N -178.67W, depth=63.3 km:

   A minor earthquake was located in ANDREANOF ISLANDS, ALEUTIAN IS..

    This earthquake was:

   90 miles (146 km) WSW of Adak

  100 miles (161 km)   E of Amchitka

  197 miles (317 km) WSW of Atka

  238 miles (382 km) ESE of Buldir Is

 

 April 24 at 15:18:40.291 UTC (April 24, 07:18:40.291 AKDT), Ml 3.6, 53.13N -166.63W, depth=25.6 km:

   A minor earthquake was located in FOX ISLANDS, ALEUTIAN ISLANDS.

    This earthquake was:

   51 miles ( 83 km)   S of Unalaska

   53 miles ( 85 km)   S of Dutch Harbor

   78 miles (126 km) SSW of Akutan

   94 miles (151 km)   E of Nikolski

 

 April 30 at 21:32:16 UTC (April 30, 01:32 PM AKDT), Ml 3.3, 60.9N -150.75W, depth=4 km:

   A minor earthquake was located in the Kenai Peninsula region of Alaska.

   It was felt in Soldotna, Anchorage, and Homer.

    This earthquake was:

   20 miles ( 32 km)  SE of Tyonek

   22 miles ( 35 km)   N of Sterling

   27 miles ( 43 km)  NE of Kenai

   27 miles ( 44 km) NNE of Soldotna

 

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 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.