19 APR 2009 (109)
ot = 23:15:53.25 +/- 1.38 TONGA REGION
lat = -22.937 +/- 23.3
lon = -174.936 +/- 10.1 MAGNITUDE 4.7 (GS)
dep = 106.4 +/- 5.3
200 km (125 miles) S of NUKU'ALOFA, Tonga
465 km (290 miles) ESE of Ndoi Island, Fiji
485 km (300 miles) SSW of Neiafu, Tonga
1830 km (1140 miles) NE of Auckland, New Zealand
nph = 28 of 28 se = 0.68 FE=174 A
error ellipse = (351.0, 2.0, 36.3;260.0, 6.0, 14.7;105.0, 82.0, 7.8)
mb = 4.7 ( 32) 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
MSVF ePn 23:17:51.44 -0.6 8.4 306 MSVF
CTAO eP 23:22:44.53 -1.2 36.2 266 b:2.0+1 .80 5.1 CTAO
PMG eP 23:23:07.89 0.8 38.7 284 b:9.8+1 1.5 5.4 PMG
STKA eP 23:23:12.92 0.1 39.4 247 b:8.8+0 1.7 4.3 STKA
ISA eP 23:27:45.74 -0.3 79.1 43 b:7.4+0 1.2 4.4 ISA
CMB eP 23:27:47.32 -0.4 79.4 40 b:6.0+0 1.0 4.3 CMB
GSC eP 23:27:50.14 -0.6 80.0 44 b:2.2+1 1.9 4.7 GSC
MTUM eP 23:27:51.67 0.1 80.1 42 MTUM
TUC eP 23:28:03.21 -0.2 82.4 50 b:6.7+0 1.3 4.3 TUC
CCUT eP 23:28:09.89 0.3 83.5 44 b:7.3+0 1.0 4.5 CCUT
epP 23:28:29.42 depth = -7.7
ELK eP 23:28:12.86 -0.2 84.2 41 b:4.7+0 1.1 4.3 ELK
LON eP 23:28:13.42 0.0 84.4 33 b:3.9+0 .96 4.3 LON
MSU eP 23:28:16.54 0.3 84.9 44 MSU
MVU eP 23:28:16.58 0.4 84.8 44 b:6.9+0 1.1 4.5 MVU
BMO eP 23:28:18.30 -1.1 85.5 37 b:4.7+0 1.2 4.3 BMO
HAWA eP 23:28:18.42 0.3 85.3 34 b:9.4+0 1.2 4.6 HAWA
MFID eP 23:28:19.50 0.3 85.5 38 b:4.7+0 1.1 4.3 MFID
CHGN epP 23:28:19.96 1.2 80.2 9 CHGN
SRU eP 23:28:22.80 -0.4 86.3 44 b:8.2+0 1.3 4.6 SRU
LPM eP 23:28:23.53 -0.2 86.4 50 LPM
ANMO eP 23:28:25.25 -0.6 86.8 49 b:1.1+1 1.2 4.8 ANMO
GDL2 eP 23:28:26.09 -0.5 87.0 53 GDL2
TRF eP 23:28:32.32 -0.1 88.3 10 b:8.4+1 2.3 5.4 TRF
SKAG eP 23:28:35.06 2.5 88.3 19 b:2.0+1 1.5 4.9 SKAG
DOT eP 23:28:39.60 0.9 89.7 13 b:6.7+0 .96 4.7 DOT
EGAK eP 23:28:46.60 0.4 91.3 13 b:2.5+1 1.9 5.1 EGAK
HKT eP 23:28:51.08 -1.0 92.4 58 b:4.6+1 2.0 5.4 HKT
Generated 2009 APR 19 at 23:39 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
