Bulletin: March 2011
U.S. DEPARTMENT OF THE INTERIOR NO. 3-11-EXP
GEOLOGICAL SURVEY JUN 15, 2011
ROUTINE MINING SEISMICITY IN THE UNITED STATES
MARCH 2011
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 23 16 20.4 40.273 N 107.768 W 0 G A 0.9 47 30 COLORADO. ML 3.4 (GS). 28 km (17 miles) NNE of Meeker.
03 20 39 46.6 45.849 N 106.659 W 0 G A 0.9 77 11 EASTERN MONTANA. ML 2.8 (GS). 5 km (3 miles) SW of
Colstrip.
04 21 06 27.5 43.787 N 105.199 W 0 G A 0.9 71 24 WYOMING. ML 3.2 (GS). 61 km (38 miles) SSE of Gillette.
04 23 07 05.9 40.198 N 107.804 W 0 G A 1.1 81 12 COLORADO. ML 2.7 (GS). 21 km (13 miles) NNE of Meeker.
08 18 19 51.4 44.038 N 105.287 W 0 G A 1.2 129 15 WYOMING. ML 2.9 (GS). 33 km (20 miles) SSE of Gillette.
08 20 11 45.4 43.611 N 105.070 W 0 G A 1.4 83 24 WYOMING. ML 3.2 (GS). 75 km (47 miles) WSW of Newcastle.
10 20 06 12.3 43.616 N 105.023 W 0 G A 1.2 84 23 WYOMING. ML 3.4 (GS). 71 km (44 miles) WSW of Newcastle.
10 22 34 56.5 44.704 N 106.074 W 0 G A 1.1 104 13 WYOMING. ML 2.8 (GS). 63 km (39 miles) NE of Buffalo.
12 19 09 10.0 43.794 N 105.221 W 0 G A 1.4 51 33 WYOMING. ML 3.4 (GS). 61 km (38 miles) SSE of Gillette.
14 20 10 06.9 43.541 N 105.112 W 0 G A 1.3 133 23 WYOMING. ML 3.2 (GS). 81 km (50 miles) WSW of Newcastle.
18 18 08 05.9 43.639 N 105.185 W 0 G A 1.6 125 19 WYOMING. ML 3.1 (GS). 77 km (48 miles) SSE of Gillette.
18 21 00 46.1 45.967 N 106.697 W 0 G A 1.3 100 11 EASTERN MONTANA. ML 2.7 (GS). 10 km (6 miles) NNW of
Colstrip.
20 17 56 25.7* 44.142 N 105.348 W 0 G B 2.6 119 13 WYOMING. ML 2.8 (GS). 22 km (13 miles) SE of Gillette.
21 19 05 55.6 43.804 N 105.205 W 0 G A 1.3 51 26 WYOMING. ML 3.1 (GS). 59 km (37 miles) SSE of Gillette.
26 18 36 54.0 43.770 N 105.254 W 0 G A 1.1 28 42 WYOMING. ML 3.2 (GS). 61 km (38 miles) SSE of Gillette.
27 22 49 06.5 40.407 N 107.096 W 0 G A 1.0 37 28 COLORADO. ML 3.5 (GS). 24 km (15 miles) WSW of
Steamboat Springs.
29 19 16 51.5 43.575 N 105.276 W 0 G A 1.4 50 26 WYOMING. ML 3.0 (GS). 82 km (51 miles) SSE of Gillette.
31 17 14 13.5 43.647 N 105.135 W 0 G A 0.8 51 58 WYOMING. ML 4.0 (GS). 78 km (49 miles) SSE of Gillette.
31 18 12 10.7 44.001 N 105.234 W 0 G A 1.3 114 16 WYOMING. ML 2.9 (GS). 39 km (24 miles) SE 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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