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Earthquake Hazards Program
Phase Data

Explanation of Parameters


     20 JUL 2007  (201)

     ot  = 17:50:20.35   +/-   0.00          NORTHERN CALIFORNIA             
     lat =      38.807   +/-    0.0
     lon =    -122.806   +/-    0.0              MAGNITUDE 3.8 (NC)       
     dep =         1.3   +/-    0.0   

     25 km (15 miles) SW of Clearlake, California (pop 13,000)
     40 km (25 miles) NNW of Santa Rosa, California (pop 147,000)
     50 km (30 miles) SE of Ukiah, California (pop 15,000)
     115 km (75 miles) WNW of SACRAMENTO, California (pop 407,000)
 
     Felt at Cloverdale, Eureka, Healdsburg, Kelseyville, Middletown,
     Saint Helena and The Sea Ranch.

     nph =   29 of  29    se = 0.00    FE=036                            held

     error ellipse = (  0.0,  0.0,  0.0;  0.0,  0.0,  0.0;  0.0,  0.0,  0.0)

 mb = 0.0 (  0)  ML = 3.3 ( 12)  mblg = 0.0 (  0)  md = 3.9 (  6)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 HOPS ePg     17:50:26.17   0.5    0.3 312 d:1.9+2     3.8  L:2.9+1 .53 3.2  HOPS
 NSHM ePg     17:50:26.82   0.2    0.3 151 d:1.5+2     3.6                   NSHM
 MCCM ePg     17:50:33.83   0.7    0.7 185 d:1.5+2     3.8  L:3.3+0 .73 3.3  MCCM
 KCPM ePg     17:50:41.08   0.3    1.1 326                                   KCPM
 OHCM ePg     17:50:41.52  -1.0    1.2  62 d:1.6+2     4.0                   OHCM
 KIPM ePg     17:50:42.14   0.1    1.1 333 d:1.6+2     4.0                   KIPM
 WDC  ePn     17:50:51.61  -0.6    1.8   6 d:1.8+2     4.3  L:2.1-1 1.0 2.8  WDC 
 CMB  ePn     17:50:55.04  -0.9    2.1 111 d:1.9+2     4.5X L:3.2-1 .58 3.2  CMB 
 SAO  ePn     17:50:57.98  -1.5    2.3 152 d:1.5+2     4.4X L:1.3-1 .60 2.9  SAO 
 PAHR ePn     17:51:06.66   0.2    2.8  70 d:1.7+2     4.7X L:2.1-1 .74 3.4  PAHR
 KRMB ePn     17:51:07.31   0.4    2.8 343 d:1.1+2     4.3X                  KRMB
 YBH  ePn     17:51:10.00   2.0    2.9   1 d:1.4+2     4.5X L:1.2-1 1.5 3.2  YBH 
 MOD  ePn     17:51:15.66  -2.2    3.6  31 d:1.3+2     4.8X L:7.8-2 1.2 3.4  MOD 
 PTRM ePn     17:51:18.74  -0.8    3.8 146                                   PTRM
 MTUM ePn     17:51:19.90   1.8    3.6 112 d:1.9+2     5.1X                  MTUM
 HUMO ePn     17:51:24.66   4.7    3.8 358 d:1.5+2     5.0X L:4.4-2 .80 3.1  HUMO
 TPH  qPn     17:51:27.39  -1.7    4.4  98 d:5.0+1     4.3X L:7.3-2 1.1 3.6  TPH 
 ISA  ePn     17:51:32.19   0.2    4.7 131 d:2.0+2     5.6X L:7.0-2 1.0 3.6  ISA 
 BMN  ePg     17:51:40.52  -8.1    4.6  68 d:4.5+1     4.2X L:4.0-2 1.3 3.4  BMN 
 TPNV ePn     17:51:44.07   0.4    5.5 108 d:1.7+2     5.7X L:4.9-2 1.2 3.7X TPNV
                                           b:6.0+1 1.2 5.1X
 GSC  ePn     17:51:48.25  -1.2    5.9 124 d:8.0+1     5.2X L:1.4-2 .65 3.2X GSC 
                                           b:8.1+0 .65 4.6X
 ELK  ePn     17:51:54.89   2.5    6.1  69 d:9.7+1     5.5X L:1.1-2 1.1 3.1X ELK 
                                           b:1.1+1 1.1 4.6X
 BMO  ePn     17:52:10.50   2.3    7.3  32 d:2.4+1     4.7X L:8.2-3 1.4 3.2X BMO 
                                           b:1.3+1 1.4 5.0X
 RSW  qPn     17:52:12.29  -4.7    7.9  16 d:2.9+1     5.2X                  RSW 
 HAWA ePn     17:52:14.82  -2.2    8.0  17                                   HAWA
 LNOR qPn     17:52:16.75   1.6    7.8  24 d:2.4+1     4.9X                  LNOR
 DUG  ePn     17:52:16.81   1.1    7.9  77 d:8.0+1     6.0X L:1.4-2 1.2 3.5X DUG 
                                           b:1.8+1 1.2 5.2X
 MSU  ePn     17:52:23.18   0.8    8.3  89 d:6.7+1     6.0X                  MSU 
 FLWY eP      17:52:59.55   7.4   10.5  56 b:2.2+1 1.4 5.4X                  FLWY



 Generated 2007 JUL 25 at 19:56 UTC

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

 


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