22 APR 2009 (112)
ot = 15:18:19.13 +/- 0.16 TONGA
lat = -17.225 +/- 5.0
lon = -174.455 +/- 3.9 MAGNITUDE 4.7 (GS)
dep = 192.2 (depth phases)
160 km (100 miles) SSW of Hihifo, Tonga (pop 2,000)
165 km (105 miles) NNW of Neiafu, Tonga
440 km (275 miles) N of NUKU'ALOFA, Tonga
2415 km (1500 miles) NNE of Auckland, New Zealand
nph = 125 of 164 se = 0.79 FE=173 A
error ellipse = (148.9, 0.0, 7.2; 58.9, 0.0, 4.0; 0.0, 0.0, 0.0)
mb = 4.7 ( 60) 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
AFI ePn 15:19:17.12 -6.0X 4.2 38 d:4.2+2 6.0X L:1.5+1 .55 5.8X AFI
eS 15:19:59.14 S res = -14.1X g:1.1+1 .90 5.4X
S 15:20:00.66 S res = -12.6X
LR 15:20:23.88
MSVF ePn 15:20:06.48 4.8X 7.2 265 d:1.5+2 6.3X L:1.3-1 1.0 4.3X MSVF
g:1.1-1 1.0 3.8X b:1.1+2 1.0 5.1
FUNA ePn 15:20:48.28 1.6 10.6 324 g:9.5-1 1.5 4.8X b:9.5+2 1.5 6.0X FUNA
RAR ePn 15:21:36.57 1.9 14.4 108 g:2.3-1 1.2 4.5X b:2.3+2 1.2 5.4 RAR
S 15:24:14.32 S res = -0.9X
DZM qP 15:22:23.37 0.9 18.6 252 g:3.7-2 1.2 3.9X b:5.9+1 1.4 4.9 DZM
URZ eP 15:22:58.51 -1.5 22.2 198 g:1.3-1 .78 4.8X b:1.3+2 .78 5.5 URZ
S 15:26:49.01 S res = -1.3X
HNR eP 15:23:34.51 -0.6 26.1 284 g:1.4-1 1.1 4.7X b:1.4+2 1.1 5.6 HNR
KHZ eP 15:23:42.28 -1.9 27.1 200 g:3.3-2 .90 4.2X b:2.7+1 .78 5.0 KHZ
RPZ eP 15:24:01.04 -0.9 29.1 202 RPZ
CTAO iPc 15:25:11.80 -1.1 37.3 259 b:2.9+1 .90 4.9 CTAO
CTA P 15:25:12.55 -0.3 37.3 259 CTA
PMG eP 15:25:20.24 0.5 38.1 277 b:3.0+1 .85 5.0 PMG
COEN eP 15:25:42.63 -0.1 40.9 268 b:2.0+2 1.1 5.5 COEN
STKA eP 15:25:54.05 0.3 42.3 241 b:1.2+1 .95 4.4 STKA
PcP 15:27:45.73 1.7X
BBOO eP 15:26:31.82 0.3 47.0 241 b:3.8+2 1.0 5.8X BBOO
WRAB eP 15:26:41.68 -0.9 48.5 258 b:2.2+1 .60 4.8 WRAB
WRA P 15:26:41.80 -0.9 48.5 258 WRA
PcP 15:28:06.58 0.7X
S 15:33:22.74 S res = -6.4X
AS31 eP 15:26:43.46 -0.3 48.6 253 AS31
ASAR P 15:26:43.67 -0.1 48.6 253 ASAR
PcP 15:28:03.76 -2.6X
S 15:33:27.62 S res = -3.4X
FITZ eP 15:27:44.16 -0.1 56.9 259 b:1.1+1 1.0 4.5 FITZ
VNDA P 15:28:16.85 2.0 61.5 186 VNDA
pP 15:28:57.08 depth = 171.4X
MBWA eP 15:28:18.53 -0.2 61.9 255 b:4.2+1 1.1 5.2 MBWA
KAPI eP 15:28:41.28 -0.6 65.4 272 KAPI
MJAR P 15:29:07.99 -0.1 69.7 321 MJAR
MAJO eP 15:29:08.17 0.1 69.7 321 b:1.6+1 .90 4.8 MAJO
PEA0BeP 15:29:33.73 0.0 74.1 343 PEA0
PETK P 15:29:33.75 0.0 74.1 343 PETK
ISA eP 15:29:37.58 -0.1 74.7 44 b:1.1+1 1.3 4.4 ISA
PFO P 15:29:37.73 -1.5 74.9 47 PFO
pP 15:30:25.30 depth = 198.3
WDC eP 15:29:39.07 -0.5 75.0 38 b:4.3+0 .95 4.2 WDC
GSC eP 15:29:43.16 0.2 75.6 46 b:1.1+1 1.2 4.5 GSC
YBH eP 15:29:43.68 0.4 75.7 37 b:1.1+1 .85 4.6 YBH
BEKR eP 15:29:44.25 -0.6 75.9 40 b:4.3+0 1.0 4.1 BEKR
HUMO eP 15:29:45.63 0.2 76.1 37 b:1.1+1 .98 4.5 HUMO
NVAR P 15:29:47.56 0.1 76.4 42 NVAR
pP 15:30:34.26 depth = 193.5
NV11 eP 15:29:47.91 0.0 76.4 42 NV11
LDFC eP 15:29:49.38 0.5 76.6 46 b:2.7+1 1.2 4.8 LDFC
KDAK P 15:29:49.80 0.1 76.9 12 KDAK
KSAR P 15:29:51.25 1.7 76.8 316 KSAR
MOD eP 15:29:51.83 0.0 77.2 38 b:1.3+1 1.1 4.5 MOD
WVOR eP 15:29:58.61 -0.4 78.5 39 b:9.3+0 1.0 4.4 WVOR
RSO eP 15:30:02.54 -1.0 79.4 11 b:3.5+1 .94 5.1 RSO
SEW eP 15:30:04.22 -0.7 79.7 12 b:2.4+1 .92 4.9 SEW
ELK P 15:30:05.13 -0.2 79.6 42 ELK
pP 15:30:51.10 depth = 188.4
WUAZ eP 15:30:05.32 0.7 79.5 48 WUAZ
HAWA eP 15:30:08.79 0.0 80.3 35 b:5.2+0 .93 4.2 HAWA
BMO eP 15:30:09.93 -0.9 80.7 37 b:6.7+0 1.2 4.2 BMO
MSU eP 15:30:10.13 0.3 80.4 45 b:3.7+0 .76 4.2 MSU
MVU eP 15:30:10.65 1.0 80.4 45 MVU
PMR eP 15:30:10.73 -1.7 81.1 12 b:2.2+1 1.0 4.8 PMR
DUG eP 15:30:11.79 -0.2 80.9 43 DUG
DIV eP 15:30:13.76 -0.4 81.4 14 b:4.3+1 .92 5.2 DIV
BMRM eP 15:30:14.43 -0.4 81.5 14 b:3.9+1 1.2 5.0 BMRM
HLID eP 15:30:16.34 0.2 81.7 40 b:1.5+1 1.4 4.5 HLID
SRU eP 15:30:17.31 0.1 81.8 45 SRU
DAU eP 15:30:18.73 0.6 82.0 43 DAU
TRF eP 15:30:18.75 -1.7 82.6 11 b:2.3+1 .78 5.0 TRF
LAZ eP 15:30:18.90 0.8 82.0 50 b:1.1+1 1.7 4.3 LAZ
PPT LR 15:30:19.07 23.7 95 PPT
HWUT eP 15:30:19.60 -0.5 82.4 42 b:3.1+2 .88 6.1X HWUT
BNM eP 15:30:20.10 0.6 82.3 51 b:5.6+0 1.0 4.3 BNM
LPM eP 15:30:20.49 0.7 82.3 51 b:1.1+1 1.1 4.5 LPM
PV04 eP 15:30:21.46 0.4 82.6 46 PV04
TXAR P 15:30:21.50 1.0 82.5 56 TXAR
pP 15:31:07.42 depth = 186.8
PV01 eP 15:30:21.77 0.0 82.7 47 PV01
TNA eP 15:30:21.88 1.3 82.7 3 b:3.6+1 1.3 4.9 TNA
PAX eP 15:30:22.02 -1.0 83.1 13 b:4.7+0 .78 4.3 PAX
ANMO eP 15:30:22.06 0.1 82.7 50 b:1.5+1 1.2 4.6 ANMO
pP 15:31:09.10 depth = 191.7
SKAG eP 15:30:22.12 0.8 82.8 19 b:8.9+0 .84 4.5 SKAG
MCK eP 15:30:22.12 -0.7 83.1 11 b:4.3+1 .88 5.2 MCK
MENT eP 15:30:24.57 -0.1 83.5 14 MENT
GDL2 eP 15:30:24.58 0.7 83.1 53 b:5.4+0 .72 4.4 GDL2
MCMT eP 15:30:24.65 0.0 83.3 39 b:5.8+0 .98 4.3 MCMT
AHID eP 15:30:24.83 0.2 83.3 42 b:9.6+0 .98 4.5 AHID
DLBC eP 15:30:26.28 -0.1 83.8 22 DLBC
BSMT eP 15:30:26.30 -0.9 83.8 36 b:2.4+0 .72 4.0 BSMT
TPAW eP 15:30:26.94 -0.2 83.8 41 b:1.6+1 1.0 4.7 TPAW
SNOW eP 15:30:27.99 0.4 83.9 41 b:1.5+1 .88 4.7 SNOW
MOOW eP 15:30:28.01 -0.3 84.0 41 b:7.3+0 1.3 4.3 MOOW
CHMT eP 15:30:28.05 -1.0 84.2 37 b:3.5+0 1.0 4.0 CHMT
IMW eP 15:30:28.13 -0.1 84.0 41 b:1.4+1 .98 4.7 IMW
COLA eP 15:30:28.30 -0.7 84.3 11 b:5.3+1 .85 5.3 COLA
ILAR P 15:30:28.85 -0.7 84.4 11 ILAR
pP 15:31:16.26 depth = 192.6
PDAR P 15:30:29.01 -0.7 84.3 42 PDAR
pP 15:31:15.51 depth = 188.6
LR 16:06:56.75
BOZ eP 15:30:29.05 -1.3 84.5 39 b:1.1+1 1.2 4.5 BOZ
QLMT eP 15:30:29.29 0.3 84.2 40 b:2.2+0 1.1 3.8 QLMT
SMCO eP 15:30:29.89 -0.1 84.3 46 SMCO
YMR eP 15:30:31.08 1.1 84.4 40 YMR
EGAK eP 15:30:35.19 -0.3 85.6 14 b:2.6+1 .95 5.0 EGAK
COLD eP 15:30:37.02 -0.7 86.1 9 b:1.7+1 1.2 4.7 COLD
MAW P 15:30:37.39 1.2 85.7 199 MAW
JCT eP 15:30:38.06 -0.1 86.0 57 b:8.0+0 .88 4.6 JCT
IPM eP 15:30:40.28 1.1 86.1 276 b:4.2+1 1.1 5.2 IPM
YKA P 15:31:05.73 -0.7 92.2 24 YKA
pP 15:31:54.88 depth = 197.7
PKKPbc 15:48:19.38 -4.8X
CM31 eP 15:31:09.77 2.1 92.2 289 b:5.3+0 .88 4.6 CM31
CMAR P 15:31:09.80 2.1 92.2 289 CMAR
CHTO eP 15:31:09.86 1.7 92.3 289 b:7.8+0 .80 4.8 CHTO
ULN eP 15:31:20.53 0.0 95.1 319 b:2.8+0 .90 4.5 ULN
MKAR Pdif 15:32:33.05 0.1X 111.4 314 MKAR
PKiKP 15:36:29.97 -0.3X
PP 15:37:12.77 -1.1X
ZALV PKiKP 15:36:27.06 -0.4 110.0 322 ZALV
PP 15:36:57.56 -6.4X
MK31 ePKiKP 15:36:29.99 -0.3 111.4 314 MK31
TKM2 ePKPdf 15:36:39.44 -0.2 116.1 310 TKM2
AAK ePKPdf 15:36:40.71 -0.4 116.9 309 AAK
BRVK ePKPdf 15:36:43.75 -0.4 118.7 321 BRVK
KKAR ePKPdf 15:36:46.10 -0.4 119.8 310 KKAR
KBL ePKPdf 15:36:48.95 -0.9 121.2 300 KBL
ABKARePKPdf 15:36:58.44 0.3 125.9 319 ABKA
ARCESPKP 15:36:58.47 0.3 126.3 351 ARCE
BOSA PKP 15:37:08.97 1.0 130.6 203 BOSA
FINESPKP 15:37:12.23 0.2 133.5 347 FINE
NOA PKP 15:37:16.26 -0.7 136.1 356 NOA
AKASGPKPpre 15:37:21.88 -5.5X 141.6 336 AKAS
PKP 15:37:26.28 -1.1X
KMBO ePKPdf 15:37:32.01 -0.7 143.8 243 KMBO
PKP 15:37:32.17 -0.6X
MALT ePKPdf 15:37:33.12 0.3 144.4 313 MALT
BUR08ePKPdf 15:37:35.59 0.9 145.6 336 BUR0
MORC ePKPbc 15:37:36.26 -0.3 146.1 346 MORC
GRFO ePKPdf 15:37:36.79 -0.5 147.3 353 GRFO
BR131ePKPdf 15:37:37.36 0.3 146.9 318 BR13
ePKPbc 15:37:39.19 -0.1X
BRTR PKP 15:37:37.51 0.4 146.9 318 BRTR
PKPbc 15:37:39.71 0.4X
pPKPbc 15:38:28.85 0.2X
GERESPKP 15:37:38.54 0.3 147.8 350 GERE
PKPbc 15:37:41.68 0.4X
PSZ ePKPbc 15:37:39.94 0.2 147.2 342 PSZ
KHC ePKPbc 15:37:40.91 0.4 147.5 350 KHC
WLF ePKPbc 15:37:41.72 0.9 147.6 359 WLF
BFO ePKPbc 15:37:44.45 0.3 148.9 356 BFO
ECH ePKPbc 15:37:44.84 0.3 149.1 358 ECH
CSS ePKPbc 15:37:46.51 0.3 149.6 311 CSS
TUE ePKPbc 15:37:49.02 0.3 150.7 355 TUE
SSB ePKPbc 15:37:51.91 0.3 152.0 2 SSB
TORD PKP 15:38:05.54 -1.2 174.5 137 TORD
pPKP 15:38:54.73 -2.4X
PKPab 15:39:41.46 0.8X
pPKPab 15:40:29.95 1.3X
ESDC PKPab 15:38:18.71 -0.7 156.2 18 ESDC
ULM LR 16:10:14.29 96.0 39 ULM
Generated 2009 MAY 5 at 19:51 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
