Monthly Seismicity Report For
March 1, 2017 to March 31, 2017

During March 2017, the Alaska Earthquake Center located 3360 earthquakes within the state. Of these, 21 were larger than or equal to magnitude 4.0. 9 events were felt. The largest earthquake located in Alaska this month was a moderate earthquake of magnitude 5.5 that occurred on March 27 at 10:50:18.406 UTC (March 27, 02:50:18.406 AKDT), 56 miles WSW of Attu.

Notable Events in Descending Order of Magnitude

March 27 at 10:50:18.406 UTC (March 27, 02:50:18.406 AKDT), Ml 5.5, 52.50N 172.11W, depth=20.0 km:

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

    This earthquake was:

   56 miles ( 90 km) WSW of Attu

   86 miles (138 km)   W of Shemya

  161 miles (260 km)   W of Buldir Is

 

 March  2 at 02:11:30.682 UTC (March  1, 17:11:30.682 AKST), Ml 5.5, 59.58N -152.65W, depth=78.0 km:

   A moderate earthquake was located in SOUTHERN ALASKA. It was felt in Anchorage.

    This earthquake was:

   30 miles ( 48 km) WNW of Nanwalek

   30 miles ( 48 km) WNW of English Bay

   32 miles ( 51 km) WSW of Anchor Point

 

 March 15 at 22:19:40.693 UTC (March 15, 14:19:40.693 AKDT), Ml 5.4, 51.07N 179.07W, depth=18.0 km:

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

    This earthquake was:

   32 miles ( 51 km)   S of Amchitka

  161 miles (259 km) ESE of Buldir Is

  192 miles (309 km) WSW of Adak

 

 March  1 at 10:39:49.191 UTC (March  1, 01:39:49.191 AKST), Ml 5.2, 52.12N -173.32W, depth=63.2 km:

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

    This earthquake was:

   37 miles ( 60 km)   E of Atka

   58 miles ( 94 km) WSW of Amukta Pass

  143 miles (230 km)   E of Adak

 

 March  9 at 02:26:18.404 UTC (March  8, 17:26:18.404 AKST), Ml 5.1, 51.99N 178.34W, depth=129.0 km:

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

    This earthquake was:

   42 miles ( 68 km)  NW of Amchitka

  105 miles (169 km) ESE of Buldir Is

  185 miles (298 km) ESE of Shemya

 

 March 14 at 21:01:09.374 UTC (March 14, 13:01:09.374 AKDT), Ml 4.8, 52.10N -170.41W, depth=24.1 km:

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

    This earthquake was:

   69 miles (112 km) ESE of Amukta Pass

   87 miles (140 km)  SW of Nikolski

  161 miles (259 km)   E of Atka

 

  March  1 at 15:08:01.949 UTC (March  1, 06:08:01.949 AKST), Ml 4.7, 51.80N -175.37W, depth=56.2 km:

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

    This earthquake was:

   55 miles ( 88 km)   E of Adak

   57 miles ( 92 km) WSW of Atka

  148 miles (239 km) WSW of Amukta Pass

 

March 15 at 21:47:13.918 UTC (March 15, 13:47:13.918 AKDT), Ml 4.6, 51.07N 179.04W, depth=19.4 km:

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

    This earthquake was:

   32 miles ( 51 km)   S of Amchitka

  160 miles (257 km) ESE of Buldir Is

  193 miles (311 km) WSW of Adak

 

 March 24 at 23:49:48.171 UTC (March 24, 15:49:48.171 AKDT), Ml 4.5, 57.20N -157.48W, depth=6.6 km:

   A light earthquake was located in ALASKA PENINSULA.

    This earthquake was:

   25 miles ( 40 km)   S of Pilot Point

   49 miles ( 79 km) ENE of Port Heiden

   70 miles (112 km)   S of Egegik

 

 March  7 at 14:23:52.553 UTC (March  7, 05:23:52.553 AKST), Ml 4.5, 51.71N 178.39W, depth=104.1 km:

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

    This earthquake was:

   29 miles ( 47 km) WNW of Amchitka

  114 miles (183 km) ESE of Buldir Is

  194 miles (311 km) ESE of Shemya

 

 March 22 at 09:04:53.541 UTC (March 22, 01:04:53.541 AKDT), Ml 4.4, 65.20N -169.03W, depth=21.2 km:

   A light earthquake was located in EASTERN SIBERIA, RUSSIA.

    This earthquake was:

   37 miles ( 60 km)   S of Little Diomede

   40 miles ( 64 km)  SW of Wales

   74 miles (119 km)   W of Brevig Mission

 

 March 10 at 11:11:05.024 UTC (March 10, 02:11:05.024 AKST), Ml 4.3, 51.11N -177.34W, depth=25.8 km:

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

    This earthquake was:

   61 miles ( 98 km) SSW of Adak

  154 miles (248 km) WSW of Atka

  161 miles (258 km)   E of Amchitka

 

 March 16 at 07:55:45.160 UTC (March 15, 23:55:45.160 AKDT), Ml 4.3, 57.02N -154.17W, depth=43.2 km:

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

    This earthquake was:

    5 miles (  9 km)   N of Akhiok

   35 miles ( 56 km) WSW of Old Harbor

   37 miles ( 59 km) SSW of Larsen Bay

 

 March 28 at 20:59:58.304 UTC (March 28, 12:59:58.304 AKDT), Ml 4.2, 56.31N -156.24W, depth=45.6 km:

   A light earthquake was located in ALASKA PENINSULA.

    This earthquake was:

   83 miles (133 km)   E of Chignik

   87 miles (140 km)   E of Chignik Lagoon

   90 miles (144 km) WSW of Akhiok

 

 March  2 at 02:56:24.279 UTC (March  1, 17:56:24.279 AKST), Ml 4.2, 55.26N -163.33W, depth=189.4 km:

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

    This earthquake was:

   25 miles ( 40 km) WNW of Cold Bay

   28 miles ( 45 km)   N of False Pass

   43 miles ( 69 km) WNW of King Cove

 

 March  7 at 21:34:59.950 UTC (March  7, 12:34:59.950 AKST), Ml 4.2, 52.18N -170.38W, depth=25.3 km:

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

    This earthquake was:

   69 miles (112 km)   E of Amukta Pass

   83 miles (133 km)  SW of Nikolski

  162 miles (260 km)   E of Atka

 

 March  5 at 21:53:13.413 UTC (March  5, 12:53:13.413 AKST), Ml 4.2, 57.24N -152.36W, depth=38.0 km:

   A light earthquake was located in KODIAK ISLAND REGION, ALASKA. It was felt in Kodiak and Eagle River. 

    This earthquake was:

   35 miles ( 57 km)   E of Old Harbor

   38 miles ( 61 km)   S of Kodiak

   47 miles ( 76 km)   S of Ouzinkie

 

 March  3 at 00:41:31.220 UTC (March  2, 15:41:31.220 AKST), Ml 4.2, 61.26N -146.13W, depth=24.1 km:

   A light earthquake was located in SOUTHERN ALASKA. It was felt in Valdez and Anchorage.

    This earthquake was:

   12 miles ( 19 km)  NE of Valdez

   15 miles ( 25 km) WNW of Thompson Pass

   33 miles ( 53 km) NNE of Tatitlek

 

 March 16 at 03:41:04.661 UTC (March 15, 19:41:04.661 AKDT), Ml 4.1, 52.48N 172.82W, depth=37.0 km:

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

    This earthquake was:

   36 miles ( 58 km) SSW of Attu

   57 miles ( 92 km) WSW of Shemya

  131 miles (211 km)   W of Buldir Is

 

 March 18 at 09:01:26.694 UTC (March 18, 01:01:26.694 AKDT), Ml 4.0, 56.69N -157.99W, depth=87.4 km:

   A light earthquake was located in ALASKA PENINSULA.

    This earthquake was:

   31 miles ( 49 km)  NE of Chignik Lagoon

   31 miles ( 49 km) ESE of Port Heiden

   32 miles ( 51 km) NNE of Chignik

 

 March 25 at 01:00:38.385 UTC (March 24, 17:00:38.385 AKDT), Ml 4.0, 57.17N -157.43W, depth=5.7 km:

   A light earthquake was located in ALASKA PENINSULA.

    This earthquake was:

   27 miles ( 44 km) SSE of Pilot Point

   50 miles ( 81 km) ENE of Port Heiden

   70 miles (112 km)  NE of Chignik Lagoon

 

 March  7 at 09:50:08.170 UTC (March  7, 00:50:08.170 AKST), Ml 4.0, 59.76N -152.98W, depth=109.2 km:

   A light earthquake was located in SOUTHERN ALASKA. It was felt in Homer.

    This earthquake was:

   39 miles ( 63 km)   E of Pedro Bay

   40 miles ( 65 km)   W of Anchor Point

   46 miles ( 75 km)  NW of Nanwalek

 

 March  1 at 22:02:28.854 UTC (March  1, 13:02:28.854 AKST), Ml 4.0, 51.96N 176.25W, depth=71.4 km:

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

    This earthquake was:

   30 miles ( 49 km) SSE of Buldir Is

  104 miles (167 km) ESE of Shemya

  121 miles (195 km) WNW of Amchitka

 

 

This report was compiled by M. Braun. 

 

The data in this report are preliminary and subject to revision. Most of the earthquake parameters have been determined by the Alaska Earthquake Center, with supplemental data provided by the USGS National Earthquake Information Center, Box 25046, Denver Federal Center MS 967, Denver, CO 80225. 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.