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Earthquake Hazards Program
Phase Data

Explanation of Parameters


     18 APR 2008  (109)

     ot  = 15:14:16.68   +/-   0.27              ILLINOIS                        
     lat =      38.478   +/-    3.2
     lon =     -87.869   +/-    3.6              MAGNITUDE 4.6 (GS)       
     dep =        10.0  (geophysicist)

     35 km (20 miles) SE of Olney, Illinois (pop 8,600)
     35 km (25 miles) SW of Vincennes, Indiana (pop 18,000)
     60 km (35 miles) NNW of Evansville, Indiana (pop 121,000)
     215 km (130 miles) SE of SPRINGFIELD, Illinois
 
     Felt widely in Illinois, Indiana, Kentucky and eastern Missouri.

     nph =   75 of 179    se = 1.14    FE=489                            A   

     error ellipse = ( 62.9,  0.0,  5.0;152.9,  0.0,  3.9;  0.0,  0.0,  0.0)

 mb = 4.6 ( 73)  ML = 0.0 (  0)  mblg = 5.1 ( 45)  md = 4.0 (  6)  MS = 0.0 (  0)

 sta  phase     arrival     res   dist azm    amp  per mag     amp  per mag  sta
 OLIL ePg     15:14:23.26   0.3    0.3 325 d:5.0+2     4.0                   OLIL
      eSg     15:14:28.16  S res =   1.0X
 USIN iPgc    15:14:26.96  -0.1    0.5 163 d:5.0+2     4.0  g:1.5+1 .95 4.7  USIN
      eSg     15:14:34.30  S res =   0.1X
 WCI  ePn     15:14:39.18  -1.2    1.3 101 d:5.0+2     4.0  g:6.0+0 .70 4.8  WCI 
      eSb     15:14:57.25  S res =   0.3X
 SIUC ePn     15:14:39.49  -1.5    1.3 235 d:5.0+2     4.0  g:1.5+1 1.0 5.0  SIUC
      eSn     15:14:53.63  S res =  -4.9X
 BLO  ePn     15:14:40.08  -0.3    1.3  56 d:5.0+2     4.0  g:9.9+0 .90 4.9  BLO 
      eSn     15:14:57.60  S res =   0.2X
 SLM  ePn     15:14:48.57  -0.1    1.9 276 d:4.5+2     3.9  g:1.1+1 .60 5.2X SLM 
      eSn     15:15:13.08  S res =   0.9X
 FVM  ePn     15:14:51.63   0.1    2.1 257 g:9.5+0 .60 5.2X                  FVM 
      eSn     15:15:19.27  S res =   1.8X
 UTMT ePn     15:14:54.61   0.3    2.3 201 g:3.2+1 .95 5.6                   UTMT
      eSn     15:15:25.88  S res =   3.5X
      eSn     15:15:26.18  S res =   3.8X
 WVT  ePn     15:14:55.36   0.1    2.3 179 g:4.6+0 .70 4.9                   WVT 
      eSn     15:15:27.18  S res =   3.1X
 PARMOePn     15:14:55.69   0.4    2.3 220                                   PARM
      eSn     15:15:26.71  S res =   2.5X
      eSn     15:15:26.87  S res =   2.7X
 HDIL ePn     15:14:55.90   0.6    2.3 332 g:1.7+1 .73 5.5                   HDIL
      eSn     15:15:26.40  S res =   2.2X
      eSn     15:15:26.82  S res =   2.6X
 PVMO ePn     15:14:56.45  -1.3    2.5 216 d:2.9+2     3.4X g:3.4+1 .75 5.8  PVMO
      eSn     15:15:31.47  S res =   3.0X
 GLAT ePn     15:14:56.57  -0.5    2.5 208                                   GLAT
      eSn     15:15:30.68  S res =   3.3X
 CCM  ePn     15:15:00.66   0.7    2.7 262                                   CCM 
      eSn     15:15:34.47  S res =   1.8X
 HALT ePn     15:15:01.60  -0.2    2.8 205 d:2.8+2     3.4X                  HALT
 GNAR ePn     15:15:04.53  -0.3    3.0 215 g:1.7+2 1.0 6.4X                  GNAR
 PLAL ePn     15:15:10.45  -0.6    3.5 183 g:3.2+0 .90 4.8                   PLAL
 HBAR ePn     15:15:12.64  -0.9    3.7 218                                   HBAR
 SWET ePn     15:15:12.98   0.3    3.6 154                                   SWET
 MET  ePn     15:15:14.19  -0.2    3.7 207 d:2.4+2     3.2X g:1.8+1 .90 5.6  MET 
 TZTN ePn     15:15:18.36   1.1    3.9 118 g:5.7+0 .95 5.1                   TZTN
 CPCT ePn     15:15:19.18   0.6    4.0 137                                   CPCT
 OXF  ePn     15:15:19.18  -0.9    4.1 198 g:8.6+0 .75 5.4                   OXF 
 ACSO ePn     15:15:20.58   0.2    4.2  64 g:7.6+0 .85 5.3                   ACSO
 TKL  ePn     15:15:23.03   0.6    4.3 129                                   TKL 
 AAM  ePn     15:15:32.98   1.3    5.0  39 g:4.8+0 .77 5.3                   AAM 
 SCIA ePn     15:15:35.95  -0.4X   5.3 312 g:6.5+0 .68 5.5                   SCIA
 LRAL ePn     15:15:36.33  -2.0X   5.5 172 g:2.8+0 1.1 4.9                   LRAL
 ELN  ePn     15:15:42.26  -0.1X   5.8 100                                   ELN 
 BLA  ePn     15:15:45.59  -0.4X   6.0 100 g:3.8+0 .78 5.3  b:2.5+1 .13 5.8X BLA 
 MIAR ePn     15:15:45.89  -0.2X   6.0 231 g:6.5+0 1.0 5.4                   MIAR
 GOGA ePn     15:15:49.89   1.8X   6.2 143 g:2.7+0 .82 5.1                   GOGA
 MCWV ePn     15:15:49.92  -0.4X   6.4  77 g:5.3+0 1.3 5.2                   MCWV
 JSC  ePn     15:15:55.50  -0.7X   6.8 126                                   JSC 
 GLMI ePn     15:15:56.07  -0.3X   6.8  20 g:8.5+0 .93 5.6                   GLMI
 KSU1 ePn     15:15:56.37  -0.9X   6.9 278 g:5.0+0 1.0 5.4                   KSU1
 VBMS ePn     15:15:57.52   3.7X   6.6 200 g:4.6+0 1.1 5.3                   VBMS
 LHS  ePn     15:15:59.36   0.8X   7.0 123                                   LHS 
 ERPA ePn     15:15:59.38  -0.3X   7.0  56 g:6.2+0 1.1 5.4                   ERPA
 BRAL ePn     15:16:02.77  -3.0X   7.5 175 g:3.6+0 1.2 5.2                   BRAL
 COWI ePn     15:16:06.39  -2.1X   7.7 353 g:1.4+0 .83 5.0  b:2.5+1 .13 6.3X COWI
 CBN  ePn     15:16:06.41 -10.0X   8.3  89 g:2.3+0 .70 5.3                   CBN 
 SSPA ePn     15:16:10.54  -2.5X   8.0  71 g:1.7+0 1.2 5.0                   SSPA
 NHSC ePn     15:16:17.25   1.1X   8.2 128 g:3.2+0 .88 5.4                   NHSC
      eSb     15:18:22.42  S res =   5.1X
 ECSD ePn     15:16:17.42  -1.5X   8.4 311 g:3.2+0 1.1 5.3                   ECSD
 NATX ePn     15:16:20.60  -2.1X   8.7 222 g:1.1+0 .85 5.0                   NATX
      ePn     15:16:24.08   1.4X
 CBKS ePn     15:16:29.71  -1.0X   9.3 276                                   CBKS
 WMOK ePn     15:16:31.19  -2.8X   9.5 250                                   WMOK
 EYMN ePn     15:16:35.09  -2.9X   9.8 346 g:7.0-1 1.0 4.8                   EYMN
 BINY ePn     15:16:36.20  -1.5X   9.8  64                                   BINY
 OGNE ePn     15:16:55.17  -1.5X  11.2 287                                   OGNE
 AGMN ePn     15:16:56.07  -3.4X  11.4 332 g:8.7-1 1.1 5.0                   AGMN
 DWPF ePn     15:16:59.33  -3.7X  11.7 151 g:7.3-1 .95 5.0  b:4.4+1 .65 5.9X DWPF
 NCB  ePn     15:17:00.38  -2.5X  11.6  58                                   NCB 
 LONY ePn     15:17:00.44  -3.0X  11.7  54                                   LONY
 AMTX ePn     15:17:01.13  -2.0X  11.7 256                                   AMTX
 JCT  ePn     15:17:14.44  -2.5X  12.7 235                                   JCT 
 LBNH ePn     15:17:19.62  -5.6X  13.3  59 g:1.6+0 1.0 5.3  b:4.8+2 1.8 6.3X LBNH
 RSSD ePn     15:17:23.60  -3.3X  13.4 300                                   RSSD
 PHWY ePn     15:17:28.66  -3.9X  13.8 287                                   PHWY
 ISCO ePn     15:17:29.47  -3.7X  13.8 281                                   ISCO
 SDCO ePn     15:17:31.03  -3.0X  13.9 272                                   SDCO
 CPRX ePn     15:17:32.85  -3.4X  14.1 252 g:5.6-1 1.0 4.9  b:7.7+2 .96 6.4X CPRX
 GDL2 ePn     15:17:43.87  -2.8X  14.8 250                                   GDL2
 SMCO ePn     15:17:44.76  -3.1X  14.9 279                                   SMCO
 RWWY ePn     15:17:47.95  -2.9X  15.1 288 b:1.3+2 1.2 5.2                   RWWY
 ANMO ePn     15:17:50.00  -3.1X  15.3 262 b:1.7+1 .70 4.5                   ANMO
 DGMT ePn     15:17:50.17  -4.7X  15.5 315 b:1.3+2 .75 5.3                   DGMT
 LAO  ePn     15:17:54.23  -4.8X  15.8 307 g:6.3-1 .98 5.1  b:3.3+1 1.6 4.3  LAO 
 MNTX ePn     15:17:55.05  -4.7X  15.8 250 g:3.2-1 1.0 4.8  b:9.7+1 1.7 4.7  MNTX
 BNM  ePn     15:17:56.18  -2.3X  15.7 260 g:3.5-1 1.0 4.8  b:1.4+1 .52 4.4  BNM 
 LAZ  ePn     15:18:04.64   2.3X  16.0 261 g:1.3-1 1.0 4.4  b:2.9+2 1.2 5.3  LAZ 
 MVCO ePn     15:18:05.67  -0.8X  16.3 272 b:3.6+1 .85 4.5                   MVCO
 LENM eP      15:18:06.44   4.6X  16.0 260                                   LENM
 RLMT ePn     15:18:14.76  -2.9X  17.3 299 b:2.4+1 .80 4.4                   RLMT
 GCMT ePn     15:18:17.93  -5.5X  17.7 301 g:5.9-1 1.2 5.0  b:1.6+2 .84 5.2  GCMT
 SRU  ePn     15:18:21.81  -1.2X  17.7 279 b:2.4+1 .86 4.4                   SRU 
 LOHW ePn     15:18:26.51   0.8X  17.9 294 b:2.7+1 .70 4.5                   LOHW
 LKWY eP      15:18:26.94   0.9X  17.9 297 b:2.3+1 1.1 4.2                   LKWY
 SNOW eP      15:18:27.10   0.3X  18.0 293 b:2.7+1 .85 4.4                   SNOW
 HWUT ePn     15:18:27.24  -4.8X  18.4 287 b:2.9+1 .85 4.5                   HWUT
 IMW  ePn     15:18:27.36  -1.9X  18.2 295 b:2.0+1 .60 4.4                   IMW 
 REDW ePn     15:18:27.98   0.6X  18.0 293 b:3.3+1 .95 4.4                   REDW
 DAU  ePn     15:18:28.87  -0.3X  18.2 283                                   DAU 
 TPAW ePn     15:18:28.97   0.4X  18.1 293 b:3.0+1 .90 4.4                   TPAW
 TEIG ePn     15:18:29.46   0.1X  18.2 181 b:4.8+1 1.1 4.6                   TEIG
 JLU  ePn     15:18:29.64  -1.3X  18.3 284 b:1.8+1 .88 4.2                   JLU 
 TMUT ePn     15:18:30.09   0.6X  18.2 280 b:3.5+1 .92 4.5                   TMUT
 FFC  eP      15:18:31.16  -5.6X  18.9 334 b:3.6+1 .70 4.7                   FFC 
 EGMT eP      15:18:31.92  -1.3X  18.5 308 b:6.6+1 .60 5.0                   EGMT
 MPU  ePn     15:18:32.39  -0.4X  18.5 282 g:2.1-2 .92 3.8X b:2.1+1 .92 4.3  MPU 
 RRI2 eP      15:18:32.61   1.0X  18.4 293 b:1.9+1 .65 4.4                   RRI2
 QLMT eP      15:18:33.67  -1.4X  18.7 297                                   QLMT
 YFT  eP      15:18:33.73   4.2X  18.2 296 b:2.7+1 .86 4.4                   YFT 
 NLU  ePn     15:18:36.08  -0.9X  18.8 282 b:2.2+1 .76 4.4                   NLU 
 WUAZ ePn     15:18:39.89   0.6X  19.0 268 b:5.5+1 .85 4.8                   WUAZ
 MSU  ePn     15:18:40.53   0.9X  19.0 278                                   MSU 
 DUG  eP      15:18:42.44  -0.1X  19.4 283 b:4.6+1 1.0 4.7                   DUG 
 HVU  ePn     15:18:42.46  -0.5X  19.3 288 b:1.6+1 .84 4.3                   HVU 
 BGU  ePn     15:18:43.20  -2.1X  19.5 285 g:8.2-2 1.0 4.3  b:1.3+2 1.3 5.0  BGU 
 LRM  ePn     15:18:44.49  -2.0X  19.6 300                                   LRM 
 HRY  ePn     15:18:44.63   0.5X  19.4 303                                   HRY 
 MCMT eP      15:18:45.70  -0.3X  19.7 297 g:5.7-2 1.2 4.1  b:7.5+0 .70 4.1  MCMT
 TUC  eP      15:18:45.95   0.3X  19.6 259 b:1.1+1 1.0 4.1                   TUC 
 DLMT ePn     15:18:47.69   1.3X  19.6 298 b:2.1+1 .95 4.4                   DLMT
 ARUT eP      15:18:49.46  -1.3   20.1 276 g:6.0-2 1.1 4.2  b:1.3+3 1.7 6.0X ARUT
 M13A eP      15:18:53.72   0.4   20.3 286 g:1.7-2 .73 3.8X b:1.7+1 .73 4.5  M13A
 N13A ePn     15:18:54.03  -1.8   20.4 285 b:2.6+1 .75 4.7                   N13A
 CCUT ePn     15:18:54.33   1.9   20.1 275 b:1.9+1 .96 4.4                   CCUT
 CHMT ePn     15:18:55.26  -0.8   20.4 303                                   CHMT
 FCC  eP      15:18:56.87   0.2   20.7 351 b:8.6-1 .80 3.2X                  FCC 
 HLID eP      15:18:57.10   0.8   20.6 293 b:1.4+1 .80 4.4                   HLID
 SLMT ePn     15:18:57.61  -1.3   20.7 303                                   SLMT
 MSO  ePn     15:18:59.52  -1.5   20.8 302 b:1.4+1 1.1 4.2                   MSO 
 YBMT eP      15:19:01.81  -0.2   21.2 305                                   YBMT
 SWMT ePn     15:19:01.92  -1.6   21.1 304                                   SWMT
 N12A ePn     15:19:02.32  -0.9   21.0 285 b:1.7+1 .75 4.5                   N12A
 ELK  eP      15:19:02.60   0.2   21.2 285 b:1.6+1 .95 4.4                   ELK 
 JTMT ePn     15:19:04.90  -1.5   21.3 304                                   JTMT
 WALA eP      15:19:05.80   0.4   21.5 308 b:9.0-1 1.1 3.1X                  WALA
 BSMT eP      15:19:09.59   2.1   21.7 304                                   BSMT
 LDFC eP      15:19:13.78   2.1   22.1 270 b:3.2+1 .86 4.8                   LDFC
 GLA  eP      15:19:17.30   1.0   22.5 264 b:3.7+1 1.0 4.8                   GLA 
 BMO  eP      15:19:19.19  -0.5   22.8 296 b:7.8+0 1.0 4.2                   BMO 
 EDM  eP      15:19:19.90  -0.6   22.9 318                                   EDM 
 BMN  eP      15:19:20.38   1.7   22.7 284 b:1.4+1 1.0 4.4                   BMN 
 GSC  eP      15:19:25.92   0.8   23.3 271 b:8.1+1 2.0 4.9                   GSC 
 WVOR eP      15:19:26.97  -1.7   23.7 289 g:1.8-2 .98 3.8X b:1.8+1 .98 4.6  WVOR
 NEW  eP      15:19:27.94   3.4X  23.3 304 b:1.3+1 .75 4.5                   NEW 
 LNOR eP      15:19:33.45   5.4X  23.6 298                                   LNOR
 OD2  eP      15:19:34.36   1.6   24.1 302 g:1.1-2 .92 3.7X b:9.8+0 .92 4.4  OD2 
 TGUH eP      15:19:35.26   0.7   24.3 179 g:6.5-2 .88 4.5  b:6.1+1 .83 5.3  TGUH
 HAWA eP      15:19:35.42  -1.0   24.5 299 g:1.7-2 .88 3.9X b:1.7+1 .88 4.7  HAWA
 ISA  eP      15:19:38.35   1.9   24.5 273 b:2.5+1 1.4 4.7                   ISA 
 MOD  eP      15:19:39.98  -0.1   24.9 288                                   MOD 
 OSI  eP      15:19:41.26   0.3   25.0 271 b:1.9+1 .65 4.9                   OSI 
 RSW  eP      15:19:41.33   4.4X  24.6 299                                   RSW 
 ETW  eP      15:19:44.65   1.6   25.3 302                                   ETW 
 CMB  eP      15:19:47.94   3.0   25.5 279 b:1.7+1 1.0 4.7                   CMB 
 LON  eP      15:19:51.29   0.3   26.1 299 g:1.1-2 .86 3.8X b:1.1+1 .82 4.6  LON 
 RPW  eP      15:19:52.80   1.5   26.2 303                                   RPW 
 SAO  eP      15:19:57.20   2.3X  26.6 277 b:3.0+1 .85 5.0                   SAO 
 SDV  eP      15:20:55.68   0.9   33.3 148 b:8.5+0 1.0 4.6                   SDV 
 RES  eP      15:21:21.07  -0.1   36.4 357 b:4.1+0 .60 4.4                   RES 
 INK  eP      15:21:42.42   1.2   38.8 335 b:1.2+1 1.4 4.4                   INK 
 EGAK eP      15:21:55.78   0.8   40.5 328 b:9.9+0 1.0 4.5                   EGAK
 SUMG eP      15:22:11.78   4.8X  41.9  20 b:1.5+2 2.9 5.2                   SUMG
 COLA eP      15:22:17.05  -1.0   43.3 327 b:8.7+0 .90 4.5                   COLA
 TRF  eP      15:22:25.75   0.0   44.2 325 b:4.7+1 1.7 5.1                   TRF 
 MCK  eP      15:22:25.89   5.0X  43.6 326 b:4.9+1 2.1 4.9                   MCK 
 BPAW eP      15:22:26.81  -1.6   44.6 326 b:1.4+1 1.2 4.7                   BPAW
 KTH  eP      15:22:27.55  -0.4   44.5 325 b:6.9+0 .56 4.7                   KTH 
 PPLA eP      15:22:31.55  -0.8   45.0 324 b:2.9+1 1.1 5.1                   PPLA
 CHUM eP      15:22:31.84  -1.0   45.1 326 b:1.6+1 .70 5.1                   CHUM
 SVW2 eP      15:22:46.50   1.4   46.7 322                                   SVW2
 BILL eP      15:24:23.53  -2.4   60.4 335 b:4.2+0 .80 4.6                   BILL
 TIXI eP      15:25:10.53   0.5   67.1 348 b:2.5+0 .69 4.5                   TIXI
 ARU  eP      15:26:32.44  -0.2   81.3  18 b:1.6+1 1.3 4.9                   ARU 
 ABKAReP      15:27:05.81  -1.6   88.1  20 b:1.8+0 .60 4.6                   ABKA
 KURK eP      15:27:15.94  -2.1   90.4   9 b:4.9+0 1.1 4.7                   KURK



 Generated 2008 APR 18 at 23:00 UTC

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


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