Bulletin: April 2009

 
U.S. DEPARTMENT OF THE INTERIOR                                                                         NO.  4-09-EXP
GEOLOGICAL SURVEY                                                                                        JUN 24, 2009
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                         APRIL 2009
 
 
  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 16 18.6  43.796 N  105.149 W   0 G           A 2.3   52   39  WYOMING. ML 3.4 (GS). 60 km (40 miles) SSE of Gillette.
04  18 59 46.3  43.792 N  105.193 W   0 G           A 0.9   71   47  WYOMING. ML 3.3 (GS). 60 km (40 miles) SSE of Gillette.
05  22 03 42.7  40.129 N  107.694 W   0 G           A 1.0  114   19  COLORADO. ML 2.8 (GS). 20 km (10 miles) ENE of Meeker.
06  18 03 37.5  43.801 N  105.246 W   0 G           A 0.9   51   47  WYOMING. ML 3.3 (GS). 60 km (35 miles) SSE of Gillette.
06  20 12 39.1  43.693 N  105.256 W   0 G           A 0.9   51   42  WYOMING. ML 3.2 (GS). 70 km (45 miles) SSE of Gillette.
08  18 06 56.1  43.810 N  105.257 W   0 G           A 1.0   51   40  WYOMING. ML 3.2 (GS). 60 km (35 miles) SSE of Gillette.
11  16 07 47.4* 44.039 N  104.833 W   0 G           B 1.7  180   15  WYOMING. ML 2.7 (GS). 55 km (35 miles) WNW of Newcastle.
12  00 03 35.7  43.706 N  105.228 W   0 G           A 0.8   97   22  WYOMING. ML 2.8 (GS). 70 km (40 miles) SSE of Gillette.
12  18 01 36.7* 43.646 N  105.324 W   0 G           B 1.3  123   12  WYOMING. ML 2.7 (GS). 75 km (45 miles) SSE of Gillette.
12  18 49 22.4  43.720 N  105.367 W   0 G           A 0.9  121   12  WYOMING. ML 3.0 (GS). 65 km (40 miles) S of Gillette.
13  17 28 07.4  41.721 N  110.687 W   0 G           A 0.9  138   21  WYOMING. ML 2.2 (GS). 55 km (35 miles) NNE of Evanston.
13  19 05 00.7  43.591 N  105.129 W   0 G           A 2.0   82   27  WYOMING. ML 3.2 (GS). 80 km (50 miles) WSW of Newcastle.
18  22 26 04.4* 44.467 N  105.421 W   0 G           B 1.3  173   12  WYOMING. ML 3.0 (GS). 20 km (15 miles) NNE of Gillette.
20  18 03 02.4  43.760 N  105.189 W   0 G           A 0.9   51   46  WYOMING. ML 3.4 (GS). 65 km (40 miles) SSE of Gillette.
21  18 08 09.1  43.744 N  105.245 W   0 G           A 1.1   51   41  WYOMING. ML 3.3 (GS). 65 km (40 miles) SSE of Gillette.
22  22 19 44.3  40.106 N  107.922 W   0 G           A 0.8  123   18  COLORADO. ML 2.6 (GS). NEAR Meeker.
23  06 23 49.3  40.445 N  106.884 W   1 G           A 0.9   71   26  COLORADO. ML 2.9 (GS). NEAR Steamboat Springs.
25  18 23 34.0  43.817 N  105.167 W   0 G           A 1.1   52   40  WYOMING. ML 3.4 (GS). 60 km (35 miles) SSE of Gillette.
27  20 04 31.1  43.808 N  105.218 W   0 G           A 1.0   51   42  WYOMING. ML 3.2 (GS). 60 km (35 miles) SSE of Gillette.
29  18 19 28.5  44.088 N  105.387 W   0 G           A 1.1   95   15  WYOMING. ML 3.0 (GS). 25 km (15 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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