Bulletin: August 2003

U.S. DEPARTMENT OF THE INTERIOR                                                                         NO.  8-03-EXP
GEOLOGICAL SURVEY                                                                                        SEP 26, 2003
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                        AUGUST 2003
 
 
  ORIGIN TIME       GEOGRAPHIC       DEPTH MAGNITUDE  SD  GAP  NO.   F-E REGION, CONTRIBUTED MAGNITUDES AND COMMENTS
      UTC          COORDINATES                GS              STA                                                
DAY HR MN SEC     LAT       LONG            mb  MS            USED                                                
 
03  18 01 08.4  43.737 N  105.329 W    0 G           0.8  124   24  WYOMING. ML 3.1 (GS). 65 km (40 miles) SSE of Gillette.
11  18 02 11.7  43.828 N  105.237 W    0 G           1.2  111   25  WYOMING. ML 3.5 (GS). 55 km (35 miles) SSE of Gillette.
14  18 01 44.3  43.755 N  105.305 W    0 G           1.2  122   15  WYOMING. ML 3.0 (GS). 65 km (40 miles) SSE of Gillette.
15  18 05 10.3  43.762 N  105.312 W    0 G           0.9  123   28  WYOMING. ML 3.4 (GS). 60 km (40 miles) SSE of Gillette.
17  21 21 45.5  44.156 N  105.358 W    0 G           1.3  150   11  WYOMING. ML 2.7 (GS). 20 km (10 miles) SE of Gillette.
21  20 02 22.3  43.721 N  105.321 W    0 G           0.8  121   21  WYOMING. ML 3.2 (GS). 65 km (40 miles) SSE of Gillette.
24  18 01 15.0* 44.006 N  105.428 W    0 G           1.6  105   11  WYOMING. ML 2.7 (GS). 30 km (20 miles) S of Gillette.
25  20 35 44.7  44.181 N  105.294 W    0 G           1.2   88   20  WYOMING. ML 3.4 (GS). 20 km (15 miles) SE of Gillette.
26  18 04 43.9  43.742 N  105.236 W    0 G           1.3  116   24  WYOMING. ML 3.3 (GS). 65 km (40 miles) SSE of Gillette.
27  16 01 12.0  43.690 N  105.321 W    0 G           1.1  119   14  WYOMING. ML 3.5 (GS). 70 km (40 miles) SSE of Gillette.
28  18 06 17.2  43.758 N  105.319 W    0 G           0.6  123   16  WYOMING. ML 3.6 (GS). 60 km (40 miles) SSE of Gillette.
30  18 03 59.8  43.780 N  105.248 W    0 G           1.4   73   28  WYOMING. 60 km (35 miles) SSE of Gillette.
31  18 00 57.3  43.748 N  105.255 W    0 G           1.1  115   26  WYOMING. ML 3.3 (GS). 60 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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