Monthly Seismicity Report For
February 1, 2017 to February 28, 2017

During February 2017, the Alaska Earthquake Center located 2842 earthquakes within the state. Of these, ten were larger than or equal to magnitude 4.0. Six events were felt. The largest earthquake located in Alaska this month was a moderate earthquake of magnitude 5.3 that occurred on February 13 at 07:17:12.642 UTC (February 12, 22:17:12.642 AKST), Ml 5.3, 62.51N -142.75W, depth=8.9 km), 13 miles NE of Nabesna.

Notable Events in Descending Order of Magnitude

February 13 at 07:17:12.642 UTC (February 12, 22:17:12.642 AKST), Ml 5.3, 62.51N -142.75W, depth=8.9 km:

   A moderate earthquake was located in CENTRAL ALASKA.

   This event was felt in Gakona and Tok.

    This earthquake was:

   13 miles ( 21 km)  NE of Nabesna

   31 miles ( 50 km)  NW of Chisana

   40 miles ( 64 km)  SW of Northway

 

 February 15 at 15:28:17.105 UTC (February 15, 06:28:17.105 AKST), Ml 4.5, 51.93N -173.27W, depth=58.8 km:

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

    This earthquake was:

   43 miles ( 70 km) ESE of Atka

   61 miles ( 98 km) WSW of Amukta Pass

  144 miles (232 km)   E of Adak

 

 February 27 at 16:07:27.774 UTC (February 27, 07:07:27.774 AKST), Ml 4.5, 55.21N -157.69W, depth=36.8 km:

   A light earthquake was located in ALASKA PENINSULA.

    This earthquake was:

   75 miles (120 km)  SE of Perryville

   80 miles (128 km) SSE of Chignik

   85 miles (137 km) SSE of Chignik Lagoon

 

 February 11 at 16:45:17.431 UTC (February 11, 07:45:17.431 AKST), Ml 4.3, 51.15N -178.03W, depth=25.9 km:

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

    This earthquake was:

   78 miles (125 km)  SW of Adak

  131 miles (211 km)   E of Amchitka

  179 miles (289 km) WSW of Atka

 

 February 24 at 10:24:05.366 UTC (February 24, 01:24:05.366 AKST), Ml 4.3, 51.16N 176.21W, depth=27.4 km:

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

    This earthquake was:

   83 miles (134 km)   S of Buldir Is

  123 miles (198 km)   W of Amchitka

  139 miles (224 km)  SE of Shemya

 

 February 28 at 16:18:44.696 UTC (February 28, 07:18:44.696 AKST), Ml 4.2, 51.41N -178.32W, depth=49.8 km:

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

    This earthquake was:

   78 miles (126 km) WSW of Adak

  116 miles (186 km)   E of Amchitka

  184 miles (296 km) WSW of Atka

 

 February 17 at 08:00:45.083 UTC (February 16, 23:00:45.083 AKST), Ml 4.2, 51.59N 178.77W, depth=84.9 km:

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

    This earthquake was:

   11 miles ( 17 km) WNW of Amchitka

  132 miles (212 km) ESE of Buldir Is

  197 miles (317 km)   W of Adak

 

 February 21 at 04:08:57.544 UTC (February 20, 19:08:57.544 AKST), Ml 4.1, 52.30N -169.48W, depth=31.4 km:

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

    This earthquake was:

   51 miles ( 82 km) SSW of Nikolski

  106 miles (171 km)   E of Amukta Pass

  163 miles (263 km)  SW of Unalaska

 

 February 12 at 01:35:24.681 UTC (February 11, 16:35:24.681 AKST), Ml 4.0, 59.29N -153.67W, depth=121.8 km:

   A light earthquake was located in SOUTHERN ALASKA.

    This earthquake was:

   37 miles ( 60 km) SSE of Pedro Bay

   41 miles ( 66 km) ESE of Kokhanok

   52 miles ( 84 km)  SE of Newhalen

 

 February 24 at 19:26:49.954 UTC (February 24, 10:26:49.954 AKST), Ml 4.0, 52.36N -174.39W, depth=201.3 km:

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

    This earthquake was:

   14 miles ( 23 km)  NW of Atka

  101 miles (162 km)   W of Amukta Pass

  102 miles (164 km) ENE of Adak

 

 

This report was compiled by N.Kozyreva. 

 

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.