Bulletin: April 2001

 
 
 
 
U.S. DEPARTMENT OF THE INTERIOR                                                                         NO.  4-01-EXP
GEOLOGICAL SURVEY                                                                                        MAY 17, 2001
 
                                      ROUTINE MINING SEISMICITY IN THE UNITED STATES
 
                                                         APRIL 2001
 
 
  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  Msz            USED
 
01  14 13 24.2  40.334 N  107.802 W    0 G           0.7  134   14  COLORADO. ML 2.4 (GS). 20 miles SW of Craig.
01  17 01 07.4? 33.11  N  109.37  W    0 G           0.2  175    4  EASTERN ARIZONA. ML 2.4 (GS). 25 miles NE of Safford.
01  20 09 45.2* 43.771 N  105.335 W    0 G           0.6  238   15  WYOMING. ML 3.1 (GS). 35 miles SSE of Gillette.
01  21 01 51.8  46.734 N  122.743 W    0 G           0.6  102    6  WASHINGTON. MD 3.6 (GS). 10 miles E of Centralia.
01  23 42 28.2? 43.71  N  104.82  W    0 G           1.1  253    9  WYOMING. ML 3.0 (GS). 30 miles WSW of Newcastle.
02  17 22 03.0? 43.89  N  104.82  W    0 G           0.6  256    6  WYOMING. ML 2.5 (GS). 30 miles W of Newcastle.
02  18 24 02.6* 33.018 N  109.328 W    0 G           0.2  177    5  EASTERN ARIZONA. ML 2.8 (GS). 25 miles ENE of Safford.
02  22 03 54.0  40.313 N  107.846 W    0 G           0.9  133   14  COLORADO. ML 2.8 (GS). 20 miles SW of Craig.
02  22 04 23.6  46.735 N  122.732 W    0 G           0.5  145    9  WASHINGTON. MD 3.0 (GS). 10 miles E of Centralia.
03  22 02 56.6  40.183 N  107.777 W    0 G           0.9  128   10  COLORADO. ML 2.5 (GS). 25 miles SSW of Craig.
04  19 50 35.1  33.045 N  109.336 W    0 G           0.8  139    7  EASTERN ARIZONA. ML 3.0 (GS). 25 miles NE of Safford.
04  22 02 18.0  40.315 N  107.830 W    0 G           0.6  132   18  COLORADO. ML 3.1 (GS). 20 miles SW of Craig.
05  18 09 58.8* 43.783 N  105.242 W    0 G           0.7  239   15  WYOMING. ML 3.1 (GS). 35 miles SSE of Gillette.
05  20 03 12.0* 43.847 N  104.727 W    0 G           0.7  255   11  WYOMING. ML 3.3 (GS). 25 miles W of Newcastle.
05  22 11 29.6* 46.807 N  122.741 W    0 G           0.4  130    5  WASHINGTON. MD 3.2 (GS). 10 miles ENE of Centralia.
06  15 37 41.1  41.639 N  108.853 W    0 G           0.8  146   18  WYOMING. ML 2.4 (GS). 20 miles ENE of Rock Springs.
06  20 00 12.5  43.767 N  105.091 W    0 G           0.8  144   18  WYOMING. ML 3.4 (GS). 40 miles SSE of Gillette.
06  21 26 04.4? 33.04  N  109.33  W    0 G           0.3  176    4  EASTERN ARIZONA. ML 2.5 (GS). 25 miles ENE of Safford.
06  22 02 47.0  40.308 N  107.742 W    0 G           0.4  134   14  COLORADO. ML 2.8 (GS). 20 miles SE of Craig.
08  17 03 57.6* 43.733 N  105.255 W    0 G           0.6  241   11  WYOMING. ML 2.9 (GS). 40 miles SSE of Gillette.
08  17 59 05.9  40.318 N  107.789 W    0 G           0.7  134   13  COLORADO. ML 2.5 (GS). 20 miles SW of Craig.
08  19 07 03.3  43.827 N  105.147 W    0 G           0.7  143    9  WYOMING. ML 3.0 (GS). 35 miles SSE of Gillette.
09  20 04 02.0  43.799 N  105.118 W    0 G           0.9  144   19  WYOMING. ML 3.4 (GS). 40 miles SSE of Gillette.
10  18 05 20.7* 32.994 N  109.331 W    0 G           0.6  264    4  EASTERN ARIZONA. ML 2.6 (GS). 25 miles ENE of Safford.
11  21 33 01.0  46.765 N  122.776 W    0 G           0.6   89    9  WASHINGTON. MD 2.8 (GS). 10 miles ENE of Centralia.
11  23 11 56.6  33.008 N  109.330 W    0 G           0.2  178    6  EASTERN ARIZONA. ML 2.7 (GS). 25 miles ENE of Safford.
13  17 09 50.7  41.745 N  108.791 W    0 G           0.8  156   11  WYOMING. ML 2.4 (GS). 25 miles ENE of Rock Springs.
13  19 16 29.2* 33.018 N  109.319 W    0 G           0.3  178    6  EASTERN ARIZONA. ML 3.1 (GS). 25 miles ENE of Safford.
13  19 57 36.6  33.040 N  109.316 W    0 G           0.2  176    6  EASTERN ARIZONA. ML 2.7 (GS). 25 miles ENE of Safford.
16  22 06 19.5* 33.044 N  109.359 W    0 G           0.5  175    5  EASTERN ARIZONA. ML 2.6 (GS). 25 miles NE of Safford.
17  18 01 56.1  43.629 N  105.249 W    0 G           0.8  123   17  WYOMING. ML 3.1 (GS). 45 miles SSE of Gillette.
17  18 44 11.5  41.729 N  108.675 W    0 G           0.7   85   14  WYOMING. ML 2.6 (GS). 30 miles ENE of Rock Springs.
17  20 03 00.8* 43.671 N  105.318 W    0 G           0.8  237   10  WYOMING. ML 3.3 (GS). 45 miles SSE of Gillette.
17  20 56 25.8  33.233 N  109.487 W    0 G           0.3  162    7  EASTERN ARIZONA. ML 2.9 (GS). 30 miles NNE of Safford.
18  18 01 10.2  43.731 N  105.308 W    0 G           0.7  121   13  WYOMING. ML 3.5 (GS). 40 miles SSE of Gillette.
18  21 03 32.9? 33.06  N  109.38  W    0 G           0.2  174    4  EASTERN ARIZONA. ML 2.6 (GS). 25 miles NE of Safford.
19  19 18 59.1  43.975 N  105.302 W    0 G           0.9  146   10  WYOMING. ML 3.1 (GS). 25 miles SSE of Gillette.
19  19 46 38.5* 33.085 N  109.367 W    0 G           1.0  173    5  EASTERN ARIZONA. ML 2.6 (GS). 25 miles NE of Safford.
19  20 42 44.2* 32.981 N  109.265 W    0 G           0.2  181    5  EASTERN ARIZONA. ML 2.7 (GS). 30 miles ENE of Safford.
19  22 05 54.4  40.256 N  107.769 W    0 G           0.8  168    8  COLORADO. ML 2.6 (GS). 20 miles SSW of Craig.
19  22 06 35.0  44.153 N  105.346 W    0 G           0.8  159    7  WYOMING. ML 3.0 (GS). 10 miles SE Gillette.
20  19 02 24.8* 43.853 N  105.066 W    0 G           0.8  242   13  WYOMING. ML 3.4 (GS). 35 miles SE of Gillette.
20  20 58 02.4  41.661 N  108.656 W    0 G           0.6   79   24  WYOMING. ML 3.1 (GS). 30 miles E of Rock Springs.
22  19 00 20.6  43.755 N  105.300 W    0 G           0.4  122   13  WYOMING. ML 3.1 (GS). 40 miles SSE of Gillette.
23  19 02 23.5  43.669 N  105.333 W    0 G           0.8  119   16  WYOMING. ML 3.1 (GS). 45 miles SSE of Gillette.
23  19 51 20.0* 33.068 N  109.343 W    0 G           0.6  174    6  EASTERN ARIZONA. ML 2.9 (GS). 25 miles NE of Safford.
23  22 05 31.7* 33.066 N  109.354 W    0 G           0.2  174    5  EASTERN ARIZONA. ML 2.5 (GS). 25 miles NE of Safford.
24  22 02 50.4  40.280 N  107.775 W    0 G           0.6   72   20  COLORADO. ML 3.2 (GS). 20 miles SSW of Craig.
25  16 39 02.6  45.144 N  106.822 W    0 G           0.8  180   14  MONTANA. ML 2.9 (GS). 25 miles NNE of Sheridan, Wyoming.
25  20 04 08.3  43.702 N  105.301 W    0 G           0.8  119   16  WYOMING. ML 3.2 (GS). 40 miles SSE of Gillette.
25  22 13 02.7* 33.110 N  109.374 W    0 G           1.0  171    7  EASTERN ARIZONA. ML 3.4 (GS). 25 miles NE of Safford.
25  23 35 54.7  33.040 N  109.310 W    0 G           0.2  177    6  EASTERN ARIZONA. ML 2.5 (GS). 25 miles ENE of Safford.
26  22 43 41.7  38.975 N  111.337 W    0 G           0.6  102   15  UTAH. ML 2.5 (GS). 40 miles ENE of Richfield.
30  18 50 22.7* 33.015 N  109.340 W    0 G           0.2  177    5  EASTERN ARIZONA. ML 3.1 (GS). 25 miles ENE of Safford.
30  22 34 18.4* 33.027 N  109.292 W    0 G           0.5  178    6  EASTERN ARIZONA. ML 2.7 (GS). 25 miles ENE of Safford.

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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