U.S. DEPARTMENT OF THE INTERIOR NO. 3-13-EXP GEOLOGICAL SURVEY MAY 15, 2013 ROUTINE MINING SEISMICITY IN THE UNITED STATES MARCH 2013 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 16 53 27.1 33.703 N 87.294 W 0 G A 1.0 76 22 ALABAMA. mbLg 2.7 (GS). 14 km (9 miles) S of Jasper. Felt at Cordova. 02 15 29 40.8 33.777 N 87.417 W 0 G A 1.3 77 23 ALABAMA. mbLg 2.7 (GS). 14 km (9 miles) WSW of Jasper. Felt at Jasper. 03 19 01 31.8 43.795 N 105.292 W 0 G A 1.1 72 11 WYOMING. ML 3.0 (GS). 58 km (36 miles) SSE of Gillette. 06 19 43 50.1* 43.709 N 105.154 W 0 G B 1.2 116 8 WYOMING. ML 3.2 (GS). 70 km (44 miles) SSE of Gillette. 06 21 06 28.7 43.745 N 105.330 W 0 G A 1.0 56 18 WYOMING. mbLg 3.1 (GS). 64 km (40 miles) SSE of Gillette. 07 22 30 04.7 43.635 N 105.194 W 0 G A 1.0 181 11 WYOMING. ML 3.3 (GS). 77 km (48 miles) SSE of Gillette. 08 21 38 14.2 43.654 N 105.245 W 0 G A 1.3 76 42 WYOMING. ML 3.4 (GS). 73 km (45 miles) SSE of Gillette. 09 17 30 17.2 45.859 N 106.748 W 0 G A 1.5 83 10 EASTERN MONTANA. ML 2.8 (GS). 11 km (7 miles) WSW of Colstrip. 10 18 00 04.3* 43.797 N 105.180 W 0 G B 0.9 107 8 WYOMING. ML 2.9 (GS). 61 km (38 miles) SSE of Gillette. 11 05 56 02.1 38.038 N 88.728 W 0 G A 0.8 25 56 ILLINOIS. mbLg 2.7 (GS). 35 km (21 miles) SSE of Mount Vernon. mbLg 2.7 (GS). Felt at Carbondale, Ewing, Harrisburg and Herrin. 18 19 08 49.6 43.778 N 105.095 W 0 G A 1.1 144 48 WYOMING. ML 3.1 (GS). 66 km (41 miles) SSE of Gillette. 20 20 40 15.1 45.205 N 106.735 W 0 G A 1.5 66 32 EASTERN MONTANA. ML 2.8 (GS). 49 km (30 miles) NNE of Sheridan. 21 15 52 27.7* 44.125 N 105.180 W 0 G B 1.4 105 7 WYOMING. ML 2.9 (GS). 32 km (20 miles) SE of Gillette. 21 17 59 21.6 43.795 N 105.170 W 0 G A 1.1 89 35 WYOMING. ML 3.2 (GS). 61 km (38 miles) SSE of Gillette. 24 19 29 21.0 43.969 N 105.210 W 0 G A 1.4 61 11 WYOMING. ML 2.7 (AEIC). 43 km (27 miles) SSE of Gillette. 24 23 02 35.7 43.794 N 105.216 W 0 G A 0.7 82 10 WYOMING. ML 2.8 (GS). 60 km (37 miles) SSE of Gillette. 26 20 00 22.8 43.839 N 105.204 W 0 G A 1.2 55 18 WYOMING. ML 3.1 (GS). 56 km (35 miles) SSE of Gillette. 26 20 21 28.0* 45.196 N 106.895 W 0 G B 0.6 102 9 EASTERN MONTANA. ML 2.5 (GS). 45 km (28 miles) N of Sheridan. 27 17 00 21.9* 47.566 N 92.990 W 0 G B 1.0 100 8 MINNESOTA. mbLg 3.0 (GS). 17 km (11 miles) NNW of Hibbing. 28 23 35 45.9* 43.945 N 105.430 W 0 G B 2.4 111 6 WYOMING. ML 3.2 (GS). 39 km (24 miles) S 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.