U.S. DEPARTMENT OF THE INTERIOR NO. 1-13-EXP GEOLOGICAL SURVEY MAR 22, 2013 ROUTINE MINING SEISMICITY IN THE UNITED STATES JANUARY 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 02 19 54 17.0 41.701 N 110.655 W 0 G A 1.7 52 57 WYOMING. ML 2.9 (GS). 14 km (9 miles) SW of Kemmerer. 02 20 05 14.1 43.830 N 105.225 W 0 G A 1.1 50 82 WYOMING. mbLg 2.8 (GS). ML 3.0 (GS). 56 km (35 miles) SSE of Gillette. 03 17 35 56.5 43.974 N 105.116 W 0 G A 1.1 106 23 WYOMING. ML 3.1 (GS). 47 km (29 miles) SE of Gillette. 03 20 01 18.7* 43.698 N 105.196 W 0 G B 0.5 121 7 WYOMING. ML 2.6 (GS). 70 km (44 miles) SSE of Gillette. 04 19 59 25.0 43.837 N 105.275 W 0 G A 0.9 50 26 WYOMING. ML 3.3 (GS). 54 km (33 miles) SSE of Gillette. 04 21 12 20.8* 45.119 N 106.854 W 0 G B 0.9 105 6 EASTERN MONTANA. mbLg 2.8 (GS). 37 km (23 miles) NNE of Sheridan. 05 19 03 52.1 43.564 N 105.261 W 0 G A 1.3 78 36 WYOMING. ML 3.1 (GS). 83 km (52 miles) SSE of Gillette. 05 20 12 42.8 43.788 N 105.285 W 0 G A 0.7 31 77 WYOMING. ML 3.4 (GS). 58 km (36 miles) SSE of Gillette. 06 21 01 59.9 43.828 N 105.201 W 0 G A 1.0 69 55 WYOMING. mbLg 2.7 (GS). ML 3.5 (GS). 57 km (35 miles) SSE of Gillette. 11 21 59 04.1? 45.96 N 106.66 W 0 G C 0.6 109 5 EASTERN MONTANA. mbLg 2.5 (GS). 9 km (6 miles) NNW of Colstrip. 12 17 18 42.1 43.551 N 105.329 W 0 G A 1.0 58 17 WYOMING. ML 3.3 (GS). 78 km (49 miles) ENE of Midwest. 12 19 13 24.7 43.802 N 105.193 W 0 G A 0.7 70 45 WYOMING. ML 3.4 (GS). 60 km (37 miles) SSE of Gillette. 12 20 34 45.6 43.514 N 105.380 W 0 G A 0.8 49 50 WYOMING. ML 3.3 (GS). 76 km (47 miles) E of Midwest. 13 18 04 40.3* 44.078 N 105.325 W 0 G B 1.1 150 7 WYOMING. ML 2.7 (GS). 28 km (17 miles) SSE of Gillette. 13 23 24 42.9* 44.328 N 105.471 W 0 G B 0.9 101 9 WYOMING. ML 2.5 (GS). 5 km (3 miles) NNE of Gillette. 15 21 02 40.8 43.815 N 105.251 W 0 G A 1.1 68 17 WYOMING. mbLg 3.0 (GS). 57 km (35 miles) SSE of Gillette. 17 20 18 16.6 43.627 N 105.211 W 0 G A 0.9 78 44 WYOMING. ML 3.4 (GS). 77 km (48 miles) SSE of Gillette. 17 21 06 41.5 43.822 N 105.262 W 0 G A 1.4 61 18 WYOMING. ML 3.5 (GS). 58 km (36 miles) SSE of Gillette. 18 23 30 42.5* 43.462 N 105.181 W 0 G B 1.3 208 6 WYOMING. mbLg 2.6 (GS). 80 km (50 miles) NNE of Douglas. 22 19 15 08.8 47.591 N 92.609 W 0 G A 1.3 95 27 MINNESOTA. mbLg 2.5 (GS). 9 km (6 miles) NW of Virginia. 22 21 37 54.7* 44.327 N 105.461 W 0 G B 1.0 89 8 WYOMING. mbLg 2.8 (GS). 5 km (3 miles) NE of Gillette. 24 18 17 29.6 44.158 N 105.325 W 0 G A 0.7 68 14 WYOMING. ML 3.3 (GS). 20 km (13 miles) SE of Gillette. 24 20 17 14.6* 41.776 N 110.636 W 0 G B 1.4 129 8 WYOMING. ML 2.0 (GS). 8 km (5 miles) WSW of Kemmerer. 24 21 04 01.8 43.809 N 105.199 W 0 G A 0.9 50 74 WYOMING. ML 3.4 (GS). 59 km (37 miles) SSE of Gillette. 25 18 48 21.6 43.519 N 105.305 W 0 G A 1.5 63 17 WYOMING. ML 3.1 (GS). 80 km (50 miles) E of Midwest. 27 19 47 05.1 44.219 N 105.211 W 0 G A 1.1 25 160 WYOMING. ML 3.8 (GS). 25 km (15 miles) ESE of Gillette. Felt (III) at Gillette. 29 21 07 58.4* 45.756 N 107.024 W 0 G B 0.4 165 6 EASTERN MONTANA. mbLg 2.8 (GS). 34 km (21 miles) WSW of Colstrip. 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.