Bulletin: April 2008

 
U.S. DEPARTMENT OF THE INTERIOR                                                                         NO. 8-177-EXP
GEOLOGICAL SURVEY                                                                                        JUN 25, 2008
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
 
  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                                                

APR 2008
02  20 09 07.7  43.777 N  105.262 W   0 G  4.8      A 1.0   44   38  WYOMING. ML 3.3 (GS). 60 km (35 miles) SSE of Gillette.
02  21 00 12.4  43.796 N  105.329 W   0 G           A 1.2   50   31  WYOMING. ML 3.1 (GS). 55 km (35 miles) SSE of Gillette.
04  19 26 55.5* 44.133 N  105.450 W   0 G           B 1.6  103   13  WYOMING. ML 2.8 (GS). 20 km (10 miles) SSE of Gillette.
05  21 30 59.9  43.539 N  105.230 W   0 G           A 0.7  128   18  WYOMING. ML 2.9 (GS). 85 km (55 miles) SSE of Gillette.
06  19 58 53.8  43.644 N  105.250 W   0 G           A 1.0  122   12  WYOMING. ML 2.8 (GS). 75 km (45 miles) SSE of Gillette.
08  20 05 13.6  43.839 N  105.242 W   0 G           A 1.0   51   30  WYOMING. ML 3.1 (GS). 55 km (35 miles) SSE of Gillette.
09  13 26 18.1  43.791 N  105.267 W   0 G           A 0.6   69   24  WYOMING. ML 3.1 (GS). 60 km (35 miles) SSE of Gillette.
09  22 09 52.5  40.045 N  107.660 W   0 G           A 1.3   54   20  COLORADO. ML 2.7 (GS). 25 km (15 miles) E of Meeker.
12  21 00 59.4  43.708 N  105.236 W   0 G           A 0.8   51   51  WYOMING. ML 3.3 (GS). 70 km (45 miles) SSE of Gillette.
14  21 07 03.3  43.780 N  105.255 W   0 G           A 0.9   51   41  WYOMING. ML 3.2 (GS). 60 km (35 miles) SSE of Gillette.
14  22 23 08.5  44.429 N  105.361 W   0 G           A 1.2   59   26  WYOMING. ML 3.0 (EXP). 20 km (10 miles) NE of Gillette.
16  20 02 32.5  43.801 N  105.231 W   0 G           A 0.9   51   32  WYOMING. ML 3.2 (GS). 60 km (35 miles) SSE of Gillette.
18  13 49 55.6? 43.80  N  105.47  W   0 G           C 1.2  117    5  WYOMING. ML 2.5 (GS). 55 km (35 miles) S of Gillette.
18  20 12 19.5  43.765 N  105.288 W   0 G           A 1.1   70   20  WYOMING. ML 2.9 (GS). 60 km (40 miles) SSE of Gillette.
18  23 30 50.0  45.247 N  106.799 W   0 G           A 1.2  101   15  EASTERN MONTANA. ML 2.3 (GS). 50 km (30 miles) NNE of
                                                                      Sheridan.
18  23 32 51.4  43.497 N  105.134 W   0 G           A 1.1  113   15  WYOMING. ML 2.6 (GS). 85 km (55 miles) NNE of Douglas.
19  18 01 13.5  43.785 N  105.236 W   0 G           A 0.9   51   28  WYOMING. ML 3.1 (GS). 60 km (35 miles) SSE of Gillette.
19  20 06 26.0  43.741 N  105.240 W   0 G           A 0.9   51   38  WYOMING. ML 3.2 (GS). 65 km (40 miles) SSE of Gillette.
22  18 01 13.4  43.706 N  105.217 W   0 G           A 0.8   74   20  WYOMING. ML 3.1 (GS). 70 km (45 miles) SSE of Gillette.
25  17 45 23.5  43.475 N  105.332 W   0 G           A 1.3   50   14  WYOMING. ML 3.1 (GS). 75 km (50 miles) E of Midwest.
25  23 03 37.3* 43.048 N  104.952 W   0 G           B 0.8  193    6  WYOMING. ML 2.7 (GS). 50 km (30 miles) NE of Douglas.
26  20 06 35.0  43.758 N  105.268 W   0 G           A 1.0   51   35  WYOMING. ML 3.2 (GS). 60 km (40 miles) SSE of Gillette.
27  18 17 30.1  43.677 N  105.193 W   0 G           A 1.0  186   21  WYOMING. ML 3.3 (GS). 75 km (45 miles) SSE of Gillette.
27  20 35 57.5* 44.371 N  104.998 W   0 G           B 0.9  203    6  WYOMING. ML 2.7 (GS). 40 km (25 miles) ENE of Gillette.
28  20 04 33.0  43.817 N  105.214 W   0 G           A 0.8   51   42  WYOMING. ML 3.3 (GS). 55 km (35 miles) SSE of Gillette.
28  22 35 15.8* 43.277 N  105.034 W   0 G           B 1.4  191   11  WYOMING. ML 2.6 (GS). 65 km (40 miles) NNE of Douglas.
30  18 07 23.2  43.755 N  105.199 W   0 G           A 1.1   51   50  WYOMING. ML 3.3 (GS). 65 km (40 miles) SSE of Gillette.
 

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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