21 APR 2009 (111)
ot = 10:25:44.64 +/- 0.92 ALABAMA
lat = 33.011 +/- 10.7
lon = -87.145 +/- 5.0 MAGNITUDE 3.8 (GS)
dep = 5.0 (geophysicist)
40 km (25 miles) SW of Alabaster, Alabama (pop 22,000)
45 km (30 miles) ESE of Tuscaloosa, Alabama (pop 77,000)
65 km (40 miles) SSW of Birmingham, Alabama (pop 242,000)
105 km (65 miles) NW of MONTGOMERY, Alabama (pop 201,000)
mbLg 3.8 (GS).
nph = 15 of 28 se = 1.05 FE=507 A
error ellipse = ( 3.6, 0.0, 14.1; 93.6, 0.0, 6.5; 0.0, 0.0, 0.0)
mb = 0.0 ( 0) ML = 0.0 ( 0) mblg = 3.8 ( 8) md = 0.0 ( 0) MS = 0.0 ( 0)
sta phase arrival res dist azm amp per mag amp per mag sta
LRAL ePg 10:25:47.04 -0.2 0.1 79 LRAL
eSg 10:25:49.75 S res = 0.8X
OXF ePn 10:26:24.89 0.2 2.4 309 d:2.9+2 3.4X g:4.4-1 .80 3.8 OXF
eSg 10:27:00.43 S res = -1.6X
SWET ePn 10:26:25.05 0.1 2.4 24 SWET
eSg 10:27:00.52 S res = -1.9X
VBMS ePn 10:26:31.30 -0.9 3.0 255 g:1.0-1 .75 3.3 VBMS
WVT ePn 10:26:34.93 -0.1 3.2 350 d:3.9+2 3.7X g:2.8-1 .65 3.8 WVT
eSn 10:27:12.79 S res = -0.4X
GOGA ePn 10:26:34.98 0.6 3.1 82 GOGA
ePn 10:26:35.16 0.8X
HALT ePn 10:26:36.55 -2.0 3.4 329 d:1.8+2 3.0X HALT
eSg 10:27:35.95 S res = 1.6X
CPCT ePn 10:26:36.65 0.2 3.3 41 CPCT
GNAR ePn 10:26:43.54 -0.1 3.8 322 GNAR
ePn 10:26:43.75 0.2X
HBAR ePn 10:26:47.42 2.8 3.9 312 d:1.7+2 2.9X HBAR
PARMOePn 10:26:49.61 -0.1 4.2 330 PARM
TZTN ePn 10:26:54.40 -0.5 4.6 39 g:1.8-1 .77 3.8 TZTN
UALR ePn 10:26:55.90 0.1 4.7 294 g:1.5-1 .70 3.7 UALR
eSn 10:27:08.04 S res = -42.3X
USIN ePn 10:26:59.53 -0.3 5.0 355 g:3.7-1 1.2 3.9 USIN
eSn 10:27:11.67 S res = -45.9X
JSC P 10:27:01.28 0.0 5.1 74 d:3.2+2 3.5X JSC
MIAR ePn 10:27:07.60 -0.5X 5.6 288 d:2.7+2 3.4X g:7.0-2 .75 3.5 MIAR
P 10:27:16.19 -6.1X
COW 10:27:10.07 4.0X 5.4 84 COW
CNNC ePn 10:27:42.32 0.9X 8.0 71 g:1.5-1 .73 4.1 CNNC
Generated 2009 APR 21 at 10:38 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
