Phase Data

Explanation of Parameters


     20 APR 2013  (110)

     ot  = 09:33:37.02   +/-   1.86              OFF THE COAST OF EL SALVADOR    
     lat =      12.281   +/-    9.7
     lon =     -88.708   +/-   12.9              MAGNITUDE 4.4 (GS)       
     dep =        35.2   +/-    3.2   

     144 km (89 miles) SSW of San Miguel, El Salvador (pop 183,000)
     167 km (104 miles) SSE of SAN SALVADOR, El Salvador
     173 km (108 miles) WSW of Chinandega, Nicaragua
     1369 km (850 miles) ESE of MEXICO CITY, D.F., Mexico

     nph =   30 of  47    se = 0.92    FE=076                            A   

     error ellipse = (127.0,  0.0, 24.7;227.0, 86.0,  4.9; 37.0,  3.0,  2.3)

 mb = 4.4 (  1)  ML = 0.0 (  0)  mblg = 0.0 (  0)  md = 0.0 (  0)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 CSGN ePn     09:34:05.80   6.8X   1.3  58                                   CSGN
 TGUH ePn     09:34:17.16   5.2X   2.3  38                                   TGUH
      eSn     09:34:38.82  S res =   0.2 
 ESTN ePn     09:34:20.98   6.7X   2.4  70                                   ESTN
 JTS  ee      09:34:47.34   0.0X   4.2 118                                   JTS 
 ESPN ePn     09:34:48.58   8.5X   4.3  91                                   ESPN
 CCIG ePn     09:34:56.97   4.7X   5.2 321                                   CCIG
 TEIG ePn     09:35:33.71   4.1X   7.9   3                                   TEIG
 LVIG ePn     09:36:08.96   4.3X  10.5 316                                   LVIG
 TLIG ePn     09:36:15.42   5.0X  10.9 300                                   TLIG
 HKT  eP      09:37:53.24  -0.1   18.8 341 b:5.5+0 1.2 3.6                   HKT 
 435B eP      09:38:09.24   0.8   20.2 337 b:2.2+1 .60 4.7                   435B
 JCT  eP      09:38:16.10   0.5   20.8 332 b:6.8+0 .75 4.1                   JCT 
 WHTX eP      09:38:19.69   0.0   21.2 339 b:2.0+1 1.2 4.4                   WHTX
 HPIG eP      09:38:25.32   1.2   21.6 315 b:5.0+0 1.0 3.9                   HPIG
 TX31 eP      09:38:28.85   1.1   21.9 323 b:3.9+0 .70 4.0                   TX31
      eP      09:38:29.31   1.3 
 ABTX eP      09:38:34.90   0.3   22.6 335 b:7.9+0 .95 4.2                   ABTX
 MIAR eP      09:38:35.49   0.9   22.6 350 b:1.9+1 .95 4.5                   MIAR
 HUMP eP      09:38:36.34  -0.6X  22.8  72 b:6.0+1 1.5 4.8                   HUMP
 W39A eP      09:38:41.00  -0.7   23.3 349 b:2.2+1 1.1 4.6                   W39A
 HBAR eP      09:38:44.02   2.7X  23.2 356 b:3.9+1 .54 5.1                   HBAR
 PARMOeP      09:38:47.74  -3.4X  24.3 358 b:2.0+1 .64 4.8                   PARM
 WMOK eP      09:38:48.51  -1.5   24.2 339                                   WMOK
 PBMO eP      09:38:51.14  -1.3   24.4 357 b:6.3+0 .70 4.3                   PBMO
 TUL1 eP      09:38:52.17   0.2   24.4 346 b:9.4+0 1.0 4.3                   TUL1
 T47A eP      09:38:54.95   0.6   24.6   3 b:8.5+0 .70 4.4                   T47A
 AMTX eP      09:38:58.01  -3.3X  25.4 335 b:2.0+1 1.3 4.5                   AMTX
 CCM  eP      09:39:04.75   0.2   25.8 355 b:1.7+1 .70 4.7                   CCM 
 BNM  eP      09:39:17.13  -0.7   27.2 326                                   BNM 
 LENM eP      09:39:18.01  -1.6   27.4 326                                   LENM
 LAZ  eP      09:39:19.51  -0.8   27.5 326                                   LAZ 
 M48A eP      09:39:36.06  -0.1   29.3   6 b:2.2+1 1.1 4.8                   M48A
 SPMN eP      09:40:08.30  -0.5   33.0 355 b:1.6+1 .55 5.1                   SPMN
 SNOW eP      09:40:39.40   0.6   36.4 333 b:4.9+0 1.0 4.3                   SNOW
 REDW eP      09:40:39.61   1.2X  36.4 332 b:8.3+0 1.3 4.5                   REDW
 MDND eP      09:40:40.11   0.3   36.6 348 b:1.4+1 .80 4.9                   MDND
 LOHW eP      09:40:40.22   1.1   36.5 333 b:3.4+0 1.3 4.1                   LOHW
 HAL  eP      09:40:57.37  -0.6X  38.8  29 b:7.3+1 1.2 5.3                   HAL 
 CMB  epP     09:41:09.08   6.3X  38.1 318                                   CMB 
 F10A eP      09:41:19.67  -0.2   41.4 330 b:8.7+0 1.3 4.3                   F10A
 GO05 epP     09:42:43.97   9.1X  49.6 162                                   GO05
 GO06 eP      09:42:58.01  -0.1   54.0 164 b:7.2+0 .60 4.9                   GO06
 DLBC eP      09:43:06.99  -1.7   55.5 335 b:6.5+0 .35 5.1                   DLBC
 SCM  eP      09:44:10.78  -0.6   64.7 333 b:1.4+1 .92 5.0                   SCM 
 KNK  eP      09:44:12.42  -1.1   65.0 333 b:3.2+1 1.4 5.2                   KNK 
 KLU  epP     09:44:16.42  -0.2   63.9 333                                   KLU 



 Generated 2013 APR 20 at 10:05 UTC

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