Bulletin: May 2012

 
 
U.S. DEPARTMENT OF THE INTERIOR                                                                         NO.  5-12-EXP
GEOLOGICAL SURVEY                                                                                        JUL 19, 2012
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                          MAY 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  17 11 16.8  44.109 N  105.242 W   0 G  4.5      A 1.0    9  193  WYOMING. 29 km (18 miles) SE of Gillette. Felt (II) at
                                                                      Gillette. Also felt at Upton.
06  18 01 12.9* 43.901 N  105.384 W   0 G           B 1.8  190   11  WYOMING. mbLg 2.8 (GS). 44 km (28 miles) SSE of
                                                                      Gillette.
06  20 03 46.1  43.488 N  105.082 W   0 G           A 1.2  103   13  WYOMING. mbLg 2.9 (GS). 82 km (51 miles) WSW of
                                                                      Newcastle.
07  18 11 31.7  43.757 N  105.298 W   0 G           A 1.1   50   33  WYOMING. ML 3.3 (GS). 62 km (38 miles) SSE of Gillette.
07  21 08 41.8* 45.283 N  106.938 W   0 G           B 1.4  198   11  EASTERN MONTANA. ML 2.5 (GS). 54 km (34 miles) N of
                                                                      Sheridan.
09  21 35 56.0* 45.845 N  106.704 W   0 G           B 0.5  227    6  EASTERN MONTANA. mbLg 2.6 (GS). 8 km (5 miles) SW of
                                                                      Colstrip.
11  23 39 09.7* 43.106 N  105.043 W   0 G           B 1.7  216   11  WYOMING. ML 3.3 (GS). 47 km (29 miles) NE of Douglas.
13  20 02 57.5  43.806 N  105.301 W   0 G           A 1.2   63   18  WYOMING. mbLg 2.9 (GS). 56 km (35 miles) SSE of
                                                                      Gillette.
18  18 19 49.7  43.652 N  105.192 W   0 G           A 1.4   51   70  WYOMING. ML 3.5 (GS). 75 km (47 miles) SSE of Gillette.
19  07 39 24.7  44.316 N  105.185 W   0 G           A 0.9   48   68  WYOMING. ML 3.5 (GS). 25 km (16 miles) E of Gillette.
21  18 06 23.2  43.867 N  105.220 W   0 G           A 0.4   66   13  WYOMING. ML 3.3 (GS). 52 km (32 miles) SSE of Gillette.
21  21 22 19.7  43.631 N  105.254 W   0 G           A 0.9   76   15  WYOMING. ML 3.4 (GS). 76 km (47 miles) SSE of Gillette.
21  21 25 02.8  43.712 N  105.426 W   0 G           A 0.6  113   12  WYOMING. ML 2.6 (GS). 65 km (40 miles) S of Gillette.
23  20 39 58.3* 45.911 N  106.680 W   0 G           B 1.2   81    8  EASTERN MONTANA. ML 3.0 (GS). 5 km (3 miles) NW of
                                                                      Colstrip.
23  21 03 51.0* 40.926 N  116.470 W   0 G           B 0.9  106    9  NEVADA. ML 2.3 (GS). 50 km (31 miles) NE of Battle
                                                                      Mountain.
25  18 04 22.8  43.658 N  105.231 W   0 G           A 1.1   56   23  WYOMING. ML 3.4 (GS). 74 km (46 miles) SSE of Gillette.
31  20 12 42.1* 43.497 N  105.204 W   0 G           B 0.9  122    7  WYOMING. ML 2.7 (GS). 83 km (52 miles) N of Douglas.
 

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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