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Earthquake Hazards Program
Phase Data

Explanation of Parameters


     18 AUG 2009  (230)

     ot  = 02:50:17.94   +/-   0.34              COLORADO                        
     lat =      40.670   +/-    3.2
     lon =    -107.583   +/-    3.7              MAGNITUDE 3.7 (GS)       
     dep =         5.0  (geophysicist)

     20 km (10 miles) N of Craig, Colorado (pop 9,100)
     65 km (40 miles) WNW of Steamboat Springs, Colorado (pop 9,800)
     75 km (45 miles) NNE of Meeker, Colorado (pop 2,200)
     245 km (150 miles) WNW of DENVER, Colorado
 
     Felt (III) at Craig and Hayden.

     nph =   62 of  74    se = 1.31    FE=479                            A   

     error ellipse = ( 93.9,  0.0,  4.8;183.9,  0.0,  4.2;  0.0,  0.0,  0.0)

 mb = 0.0 (  0)  ML = 4.3 ( 30)  mblg = 3.8 ( 12)  md = 3.7 (  1)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 O20A ePg     02:50:29.54  -2.5    0.7 223                                   O20A
      eS      02:50:38.30  S res =  -3.3X
 RWWY ePg     02:50:37.34  -0.9    1.1  15 L:4.6+0 .68 3.7                   RWWY
      eS      02:50:50.07  S res =  -1.8X
 SMCO ePn     02:50:45.07  -1.6    1.6 162 L:5.2+0 .57 4.1  g:1.1+0 .85 4.0  SMCO
      eS      02:51:05.55  S res =  -2.0X
 PHWY ePn     02:50:48.87  -0.1    1.7  68 d:2.9+2     3.7  L:6.7-1 .30 3.3  PHWY
      eS      02:51:11.26  S res =  -0.3X  g:2.7-1 .63 3.6 
 ISCO ePn     02:50:49.09   0.0    1.7 119 L:1.3+0 .52 3.6  g:6.8-1 1.2 3.7  ISCO
      eSn     02:51:11.35  S res =  -0.5X
 BW06 P       02:50:58.25  -2.1    2.6 325 d:4.1+2     4.3X L:1.1+0 .73 4.0  BW06
                                           g:7.1-1 .73 4.1 
 PV04 ePn     02:50:59.20  -0.1    2.5 205                                   PV04
 PV10 P       02:51:00.69   0.5    2.6 207 L:1.3+1 .34 5.0  g:9.5+0 .72 5.2X PV10
 PV01 P       02:51:00.80  -0.7    2.6 197 d:3.1+2     4.0X L:1.8+1 .52 5.2  PV01
                                           g:1.2+1 .74 5.3X
 SRU  ePn     02:51:01.84  -1.0    2.7 236 L:4.4+0 .54 4.7                   SRU 
 DAU  ePn     02:51:04.48   0.6    2.8 266                                   DAU 
 JLU  ePn     02:51:06.73   1.1    2.9 270 L:1.3+0 .48 4.3                   JLU 
 HWUT P       02:51:07.36  -1.0    3.1 289 d:3.3+2     4.2X L:1.1+0 .83 4.3  HWUT
                                           g:7.7-1 .83 4.2 
 TMUT ePn     02:51:07.39  -0.5    3.1 245 L:4.2+0 .54 4.9                   TMUT
 MPU  ePn     02:51:08.46  -0.1    3.2 259 L:8.0-1 .58 4.1                   MPU 
 Q16A P       02:51:09.60  -0.5    3.3 239 d:2.6+2     4.1X                  Q16A
 CTU  ePn     02:51:11.69   3.1    3.2 272 L:6.4-1 .66 4.0                   CTU 
 REDW ePn     02:51:13.50  -1.5    3.6 319 L:3.6+0 .63 5.0                   REDW
 NLU  ePn     02:51:13.59   0.3    3.5 260 L:5.4-1 .51 4.2                   NLU 
 MVCO ePn     02:51:13.76   0.0    3.5 192 L:7.8-1 .98 4.3                   MVCO
 LOHW ePn     02:51:14.05  -1.9    3.7 324 L:2.6+0 .52 4.9                   LOHW
 SNOW ePn     02:51:14.10  -1.3    3.7 321 L:2.0+0 .57 4.8                   SNOW
 SPUT P       02:51:15.04  -1.4    3.7 281 d:2.4+2     4.2X L:2.4-1 .42 3.9  SPUT
                                           g:1.4-1 .68 3.6 
 TPAW ePn     02:51:15.25  -1.8    3.8 319 L:1.7+0 .63 4.7                   TPAW
 MOOW ePn     02:51:16.45  -1.9    3.9 324 L:3.2-1 1.0 4.0                   MOOW
 RRI2 ePn     02:51:16.78  -1.5    3.9 315 L:7.5-1 .63 4.4                   RRI2
 IMW  ePn     02:51:19.25  -1.9    4.1 323 L:3.3+0 .57 5.1                   IMW 
 HVU  ePn     02:51:19.45  -1.5    4.1 287 L:9.8-1 .66 4.6                   HVU 
 DUG  ePn     02:51:21.11   0.8    4.0 265 L:2.6-1 .70 4.0                   DUG 
 MSU  ePn     02:51:21.93  -0.2    4.1 240                                   MSU 
 KSCO P       02:51:23.30   1.1    4.2 112 d:2.3+2     4.2X                  KSCO
 H17A e       02:51:23.57  -1.1    4.3 330 d:1.7+2     4.0X                  H17A
 OGNE         02:51:23.75   0.7    4.2  84 d:1.4+2     3.7X L:4.2-1 .70 4.3  OGNE
      P       02:51:34.19   1.5X           g:2.5-1 .70 3.9 
 RSSD ePn     02:51:24.37  -0.3    4.3  36 g:1.9-1 .85 3.7                   RSSD
 BGU  ePn     02:51:25.26   3.3    4.1 275 L:1.8-1 1.3 3.9                   BGU 
 RLMT P       02:51:28.39   0.1    4.6 345 d:3.3+2     4.7X L:2.5-1 .73 4.2  RLMT
                                           g:2.4-1 1.0 3.8 
 FLWY ePb     02:51:32.24   1.2    4.1 327 L:9.8-1 1.2 4.6                   FLWY
 GCMT P       02:51:37.30  -1.1    5.3 344 d:2.5+2     4.7X L:1.7-1 .98 4.1  GCMT
                                           g:1.4-1 .98 3.7  b:2.3+1 .40 5.2X
 QLMT ePn     02:51:37.40   3.2    5.0 327                                   QLMT
 CCUT ePn     02:51:40.81   0.5    5.5 237 L:1.0-1 .82 3.9X                  CCUT
 MCMT P       02:51:44.22   1.0    5.7 319 d:2.7+2     4.9X L:3.3-2 .96 3.5X MCMT
                                           g:2.8-2 .96 3.0  b:9.0+0 .52 4.7X
 W18A ePn     02:51:44.56  -0.2    5.8 198                                   W18A
 HLID ePn     02:51:45.42   0.0    5.8 302                                   HLID
 WUAZ P       02:51:46.39  -0.4    5.9 211 d:3.0+2     5.1X L:2.9-1 .58 4.5X WUAZ
              02:51:47.29   0.5X           g:1.6-1 .73 3.9  b:1.6+2 .58 5.9X
 DLMT ePn     02:51:47.58   0.7    6.0 324                                   DLMT
      ePb     02:51:56.18  -6.1X
 LRM  ePn     02:51:51.92   0.8    6.3 327                                   LRM 
      ePb     02:52:07.71   0.2X
 R11A ePn     02:51:57.64   1.8    6.6 252                                   R11A
 HRY  ePn     02:51:57.94  -0.2    6.8 334                                   HRY 
 BGNE ePn     02:52:04.97   1.5    7.2  81                                   BGNE
 SHPR ePn     02:52:05.38   0.8    7.2 237                                   SHPR
 BRSD ePn     02:52:06.92   0.3    7.4  57                                   BRSD
 EGMT ePn     02:52:07.06  -1.2    7.5 349                                   EGMT
 AMTX         02:52:07.94   0.9    7.4 139 d:1.8+2     5.0X                  AMTX
      P       02:52:34.78  -5.4X
 CHMT ePn     02:52:08.50   0.8    7.5 329                                   CHMT
 MSO  ePn     02:52:11.65   1.1    7.7 325                                   MSO 
 SLMT ePn     02:52:13.64   1.0    7.8 329                                   SLMT
 LDFC ePn     02:52:16.94  -0.2    8.2 229 d:1.6+1     2.9X                  LDFC
      e       02:52:25.65   8.6X
      ePb     02:52:42.48   2.7X
 SWMT ePn     02:52:19.44   1.2    8.2 328                                   SWMT
 ECSD ePn     02:52:23.01  -1.4    8.7  66                                   ECSD
 YBMT P       02:52:23.32   1.0    8.5 329 d:2.8+1     3.5X L:5.9-3 .62 3.2X YBMT
                                           g:3.9-3 .76 2.6X b:3.3+0 .62 4.8X
 JTMT P       02:52:23.65   1.2    8.6 328 d:1.2+1     2.7X L:4.7-3 .84 3.1X JTMT
                                           g:4.1-3 .98 2.5X b:3.3+0 .84 4.7X
 BSMT ePn     02:52:28.07   1.5    8.8 327                                   BSMT



 Generated 2009 AUG 18 at 05:26 UTC

Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver


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