Bulletin: February 2012

 
U.S. DEPARTMENT OF THE INTERIOR                                                                         NO.  2-12-EXP
GEOLOGICAL SURVEY                                                                                        MAY  1, 2012
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                       FEBRUARY 2012
 
 
  ORIGIN TIME       GEOGRAPHIC      DEPTH MAGNITUDE Q SD  GAP  NO.   F-E REGION, CONTRIBUTED MAGNITUDES AND COMMENTS
      UTC          COORDINATES               GS                STA                                                
DAY HR MN SEC     LAT       LONG           mb  MS              USED                                                
 
01  18 06 47.3  43.545 N  105.256 W   0 G           A 1.6  127   16  WYOMING. ML 3.1 (GS). 84 km (52 miles) E of Midwest.
01  21 39 37.3  45.180 N  106.878 W   0 G           A 0.9  100   10  EASTERN MONTANA. mbLg 2.8 (GS). 43 km (27 miles) N of
                                                                      Sheridan.
02  20 06 40.0  43.804 N  105.262 W   0 G           A 1.2   69   19  WYOMING. ML 3.3 (GS). 59 km (37 miles) SSE of Gillette.
03  19 05 45.0  43.835 N  105.176 W   0 G           A 1.2   33   33  WYOMING. ML 3.4 (GS). 57 km (35 miles) SSE of Gillette.
05  19 00 51.7  43.563 N  105.422 W   0 G           A 1.0   96   12  WYOMING. ML 2.8 (GS). 71 km (44 miles) ENE of Midwest.
06  21 36 35.4  45.907 N  106.820 W   0 G           A 0.8   75   11  EASTERN MONTANA. mbLg 2.9 (GS). 16 km (10 miles) W of
                                                                      Colstrip.
07  19 05 30.8  43.785 N  105.251 W   0 G           A 1.4   26   31  WYOMING. ML 3.3 (GS). 60 km (37 miles) SSE of Gillette.
07  20 45 47.0* 44.656 N  105.540 W   0 G           B 2.6  102   10  WYOMING. ML 2.7 (GS). 41 km (25 miles) N of Gillette.
08  19 42 22.3  43.555 N  105.335 W   0 G           A 1.0   58   15  WYOMING. ML 3.1 (GS). 78 km (48 miles) ENE of Midwest.
08  22 00 22.8  43.921 N  105.266 W   0 G           A 0.5   76   11  WYOMING. mbLg 2.7 (GS). 44 km (27 miles) SSE of
                                                                      Gillette.
09  17 01 31.1* 41.648 N  110.542 W   0 G           B 0.4   81    8  WYOMING. ML 2.0 (GS). 16 km (10 miles) S of Kemmerer.
09  22 36 52.4* 45.998 N  106.490 W   0 G           B 2.9   81   11  EASTERN MONTANA. ML 2.8 (GS). 16 km (10 miles) NE of
                                                                      Colstrip.
11  21 01 46.2  43.822 N  105.271 W   0 G           A 0.9   68   17  WYOMING. ML 3.5 (GS). 55 km (34 miles) SSE of Gillette.
11  21 02 01.7* 43.226 N  107.157 W   0 G           B 1.2   95    8  WYOMING. ML 2.6 (GS). 75 km (47 miles) WSW of Midwest.
13  19 44 58.9  43.782 N  105.195 W   0 G           A 1.1   71   12  WYOMING. ML 3.1 (GS). 62 km (38 miles) SSE of Gillette.
13  23 43 47.8  44.515 N  105.314 W   0 G           A 1.0  128   10  WYOMING. mbLg 2.7 (GS). 27 km (17 miles) NE of Gillette.
16  19 00 40.4  43.703 N  105.232 W   0 G           A 1.3  120   16  WYOMING. ML 3.2 (GS). 69 km (43 miles) SSE of Gillette.
16  20 16 51.0  43.593 N  105.094 W   0 G           A 1.4   45   25  WYOMING. ML 3.4 (GS). 77 km (48 miles) WSW of Newcastle.
17  23 36 47.6* 45.237 N  106.900 W   0 G           B 1.9   65   15  EASTERN MONTANA. ML 2.6 (GS). 45 km (28 miles) NNE of
                                                                      Sheridan.
20  20 02 45.9  43.482 N  105.105 W   0 G           A 1.3  106   12  WYOMING. ML 2.9 (GS). 83 km (52 miles) NNE of Douglas.
21  18 59 51.2* 43.909 N  105.326 W   0 G           B 2.3   75   14  WYOMING. ML 3.0 (GS). 45 km (28 miles) SSE of Gillette.
22  12 49 56.9  37.908 N   81.556 W   0 G           A 1.1   58   15  WEST VIRGINIA. mbLg 3.2 (GS). 35 km (22 miles) WNW of
                                                                      Beckley.
24  18 26 12.3  44.106 N  105.220 W   0 G           A 0.8   95   15  WYOMING. ML 3.1 (GS). 31 km (19 miles) SE of Gillette.
24  19 14 43.1* 43.630 N  105.130 W   0 G           B 1.9  127   17  WYOMING. ML 3.2 (GS). 79 km (49 miles) WSW of Newcastle.
24  20 01 13.4  43.510 N  105.248 W   0 G           A 1.3   81   13  WYOMING. ML 3.0 (GS). 85 km (53 miles) E of Midwest.
24  23 12 34.3* 44.055 N  105.341 W   0 G           B 0.9  126    6  WYOMING. ML 2.7 (GS). 29 km (18 miles) SSE of Gillette.
25  21 28 02.7* 43.522 N  105.660 W   0 G           B 1.4  121   10  WYOMING. ML 2.8 (GS). 52 km (32 miles) ENE of Midwest.
26  19 07 51.7  43.710 N  105.206 W   0 G           A 1.3   93   16  WYOMING. mbLg 3.0 (GS). 69 km (43 miles) SSE of
                                                                      Gillette.
28  00 32 16.5  43.676 N  105.238 W   0 G           A 0.9  150   11  WYOMING. mbLg 2.5 (GS). 72 km (44 miles) SSE of
                                                                      Gillette.
28  19 02 05.8  43.702 N  105.252 W   0 G           A 1.1   51   21  WYOMING. ML 3.2 (GS). 69 km (43 miles) SSE of Gillette.
28  20 42 02.1  42.676 N  111.160 W   0 G           A 1.5   37   26  SOUTHERN IDAHO. ML 3.1 (GS). 20 km (12 miles) WSW of
                                                                      Afton.

For origin times after September 30, 2002, USGS computations of hypocenters and magnitudes for routine mining events are listed in this publication only for exceptionally large events and for events that are also listed in the Reviewed Event Event Bulletins (REB) of the International Data Center of the United Nations' Comprehensive Nuclear-Test-Ban Treaty Organization.

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