Earthquake 20170420-12

Earthquake 20170420-12
2017-04-20 22:59:27.350 26.70 km 5.43 mb
20.5799°S, 174.0233°W
South Pacfic Ocean; 88 km from Kotomaka, Vava‘u, Tonga
65 km N of Nuku'alofa, Tonga
Time Error: 2.11 s Num. Stations: 28
Time RMS: 1.04 s Num. Phases: 28
Depth Error: 12.90 km Max. Intensity (MMI):
Azimuth Gap: 89° Effects Type: Seismic
Analysis Type: Automatic
 
UNCHECKED, FULLY AUTOMATIC LOCATION
Magnitudes
Preferred Magnitude Stations Error Author Action
Emblem favorite 5.43 mb NEIC Action show
5.20 Ms_BB 5 0.2 NEIC Action show
5.90 mB_BB 14 0.2 NEIC Action show
5.40 mb 56 0.1 NEIC Action show
5.50 M 75 0.2 NEIC Action show
 
Origin Details
Ellipse Major: 9.00 km Fixed Depth: yes
Ellipse Minor: 6.70 km Fixed Phase: yes
Ellipse Strike: 148.0° Fixed Time: yes
Min. Distance: 6.97° Author: NEIC
Max. Distance: 152.25° Event Type: Earthquake
Fixed Location: yes External Event ID: HYDRA_RED@6470
Location Method: Inversion External Origin ID: HYDRA_RED@13099
 
Error Ellipse
Length Azimuth Dip Action
Maximum 22.00 km 148.00° 33.00° Action show
Intermediate 18.50 km 334.00° 56.00° Action show
Minimum 15.60 km 240.00° 2.00° Action show
 

None

Channel Time Amplitude Period/Duration Magnitude Event Distance Event Azimuth Action
IU.AFI.00.BHZ 2017-04-20 23:03:43.593 1.9e+04 9.10 s 5.20 Ms_BB 6.97° 18.3° Action show
IU.HNR.00.BHZ 2017-04-20 23:05:26.859 96.3 0.95 s 5.40 mb 27.43° 289.9° Action show
IU.RAO.00.BHZ 2017-04-20 23:06:21.446 6587.6 8.48 s 4.90 Ms_BB 9.33° 201.5° Action show
IU.CTAO.00.BHZ 2017-04-20 23:06:37.710 112.9 1.50 s 5.50 mb 37.19° 263.6° Action show
IU.PMG.00.BHZ 2017-04-20 23:06:53.910 73.7 1.10 s 5.30 mb 39.01° 280.6° Action show
II.TAU.00.BHZ 2017-04-20 23:06:55.859 91.9 1.40 s 5.30 mb 39.23° 226.5° Action show
IU.WAKE.00.BHZ 2017-04-20 23:07:33.559 504.5 1.50 s 6.10 mb 43.91° 333.2° Action show
IU.RAR.00.BHZ 2017-04-20 23:07:54.886 2.1e+04 5.85 s 5.70 Ms_BB 13.33° 95.2° Action show
IU.WAKE.00.BHZ 2017-04-20 23:08:16.660 3144.0 3.15 s 6.30 mB_BB 43.91° 333.2° Action show
IU.GUMO.00.BHZ 2017-04-20 23:08:42.059 227.9 1.00 s 6.10 mb 52.78° 306.5° Action show
IU.SBA.00.BHZ 2017-04-20 23:09:34.414 216.2 1.85 s 5.90 mb 58.07° 184.7° Action show
IU.NWAO.00.BHZ 2017-04-20 23:09:45.259 107.5 1.40 s 5.80 mb 61.65° 242.9° Action show
IU.MAJO.00.BHZ 2017-04-20 23:10:53.859 464.4 1.20 s 5.70 mB_BB 72.55° 321.3° Action show
IU.ADK.00.BHZ 2017-04-20 23:10:56.109 128.2 1.20 s 5.80 mb 72.19° 358.3° Action show
IU.MAJO.00.BHZ 2017-04-20 23:11:06.910 32.4 0.80 s 5.40 mb 72.55° 321.3° Action show
II.PFO.00.BHZ 2017-04-20 23:11:34.109 34.9 1.20 s 5.30 mb 76.89° 46.4° Action show
IU.YSS.00.BHZ 2017-04-20 23:11:35.640 792.7 1.60 s 5.90 mB_BB 77.69° 331.3° Action show
IU.YSS.00.BHZ 2017-04-20 23:11:36.690 56.9 1.00 s 5.60 mb 77.69° 331.3° Action show
US.TPNV.00.BHZ 2017-04-20 23:11:45.894 13.7 1.10 s 4.90 mb 78.98° 43.7° Action show
US.HAWA.00.BHZ 2017-04-20 23:11:51.674 52.8 1.45 s 5.40 mb 82.85° 34.7° Action show
US.BMO.00.BHZ 2017-04-20 23:11:52.095 12.5 1.00 s 5.00 mb 83.10° 36.9° Action show
US.WVOR.00.BHZ 2017-04-20 23:11:52.525 28.8 1.15 s 5.20 mb 80.85° 38.2° Action show
US.WUAZ.00.BHZ 2017-04-20 23:11:52.650 29.0 1.30 s 5.10 mb 81.43° 47.2° Action show
US.ELK.00.BHZ 2017-04-20 23:11:52.744 14.6 1.20 s 4.90 mb 81.85° 41.1° Action show
IU.TUC.00.BHZ 2017-04-20 23:11:56.910 55.4 1.50 s 5.40 mb 80.13° 50.2° Action show
US.HLID.00.BHZ 2017-04-20 23:11:58.000 34.9 1.30 s 5.40 mb 84.00° 39.2° Action show
US.DUG.00.BHZ 2017-04-20 23:11:59.025 15.7 1.35 s 5.00 mb 83.05° 42.6° Action show
IU.MA2.00.BHZ 2017-04-20 23:12:01.410 165.2 1.90 s 5.90 mb 84.90° 342.8° Action show
CN.LLLB.--.HHZ 2017-04-20 23:12:03.140 58.2 1.74 s 5.50 mb 84.43° 30.4° Action show
US.NEW.00.BHZ 2017-04-20 23:12:06.849 8.7 1.15 s 4.90 mb 85.30° 34.2° Action show
US.MSO.00.BHZ 2017-04-20 23:12:10.144 32.3 1.80 s 5.30 mb 86.17° 36.7° Action show
US.AHID.00.BHZ 2017-04-20 23:12:13.619 21.8 1.15 s 5.30 mb 85.55° 41.2° Action show
IU.COLA.00.BHZ 2017-04-20 23:12:14.109 43.7 1.00 s 5.70 mb 87.53° 10.9° Action show
US.MNTX.00.BHZ 2017-04-20 23:12:15.795 70.2 1.85 s 5.60 mb 83.79° 53.1° Action show
US.HWUT.00.BHZ 2017-04-20 23:12:15.900 12.4 0.95 s 5.10 mb 84.62° 42.0° Action show
TD.TD009.--.HHZ 2017-04-20 23:12:18.089 66.9 1.49 s 5.80 mb 88.20° 31.3° Action show
US.EGAK.00.BHZ 2017-04-20 23:12:20.194 327.3 1.60 s 5.80 mB_BB 88.77° 13.5° Action show
IU.ANMO.00.BHZ 2017-04-20 23:12:20.210 57.1 1.30 s 5.60 mb 84.58° 49.8° Action show
US.EGAK.00.BHZ 2017-04-20 23:12:20.744 52.6 1.40 s 5.70 mb 88.77° 13.5° Action show
CN.NBC5.--.HHZ 2017-04-20 23:12:21.039 15.2 1.12 s 5.20 mb 88.77° 25.0° Action show
RV.BRLDA.--.HHZ 2017-04-20 23:12:21.319 86.4 1.20 s 6.00 mb 88.78° 29.5° Action show
TD.TD008.--.HHZ 2017-04-20 23:12:21.579 42.6 1.32 s 5.60 mb 88.92° 31.3° Action show
RV.WTMTA.--.HHZ 2017-04-20 23:12:21.730 113.2 1.78 s 5.90 mb 88.98° 27.6° Action show
CN.NBC4.--.HHZ 2017-04-20 23:12:22.519 7.4 1.18 s 4.90 mb 88.36° 27.1° Action show
US.ISCO.00.BHZ 2017-04-20 23:12:25.569 5.2 1.15 s 4.70 mb 87.55° 45.9° Action show
CN.NBC6.--.HHZ 2017-04-20 23:12:25.599 8.6 0.94 s 5.00 mb 90.01° 24.7° Action show
US.HWUT.00.BHZ 2017-04-20 23:12:28.450 335.2 5.40 s 5.70 mB_BB 84.62° 42.0° Action show
CN.NBC2.--.HHZ 2017-04-20 23:12:28.720 437.2 1.18 s 6.60 mb 90.38° 23.4° Action show
RV.STPRA.--.HHZ 2017-04-20 23:12:29.589 105.3 1.40 s 5.90 mb 90.46° 28.9° Action show
US.BOZ.00.BHZ 2017-04-20 23:12:30.095 29.0 1.50 s 5.30 mb 86.79° 38.6° Action show
RV.BRLDA.--.HHZ 2017-04-20 23:12:31.339 823.6 3.14 s 6.20 mB_BB 88.78° 29.5° Action show
US.LKWY.00.BHZ 2017-04-20 23:12:32.345 17.2 1.35 s 5.10 mb 86.95° 40.0° Action show
TD.TD09A.--.HHZ 2017-04-20 23:12:33.109 30.5 1.23 s 5.50 mb 88.54° 30.8° Action show
RV.HILA.--.BHZ 2017-04-20 23:12:34.444 1128.3 1.45 s 7.10 mb 91.72° 26.2° Action show
CN.NBC3.--.HHZ 2017-04-20 23:12:34.869 10.0 1.04 s 5.10 mb 90.97° 24.1° Action show
RV.WAPA.--.BHZ 2017-04-20 23:12:34.924 23.7 0.95 s 5.50 mb 88.64° 28.0° Action show
US.AMTX.00.BHZ 2017-04-20 23:12:36.150 54.4 1.70 s 5.60 mb 88.01° 51.7° Action show
CN.INK.--.BHZ 2017-04-20 23:12:41.069 14.2 1.00 s 5.30 mb 93.41° 14.0° Action show
IU.HKT.00.BHZ 2017-04-20 23:12:41.259 299.3 6.20 s 5.70 mB_BB 90.41° 58.3° Action show
IU.RSSD.00.BHZ 2017-04-20 23:12:44.109 14.6 1.20 s 5.20 mb 90.66° 42.7° Action show
US.WVOR.00.BHZ 2017-04-20 23:12:46.775 580.7 6.20 s 5.80 mB_BB 80.85° 38.2° Action show
RV.HSPGA.--.HHZ 2017-04-20 23:12:47.509 26.9 1.48 s 5.30 mb 87.79° 34.7° Action show
US.WMOK.00.BHZ 2017-04-20 23:12:47.724 12.1 1.60 s 4.90 mb 90.10° 52.9° Action show
RV.HSPGA.--.HHZ 2017-04-20 23:12:47.980 594.9 5.76 s 6.10 mB_BB 87.79° 34.7° Action show
TD.TD008.--.HHZ 2017-04-20 23:12:48.470 586.6 4.60 s 6.10 mB_BB 88.92° 31.3° Action show
IU.HKT.00.BHZ 2017-04-20 23:12:48.559 18.3 1.30 s 5.20 mb 90.41° 58.3° Action show
US.DGMT.00.BHZ 2017-04-20 23:12:58.224 58.1 1.20 s 5.90 mb 92.62° 38.8° Action show
US.ECSD.00.BHZ 2017-04-20 23:13:09.920 41.5 1.30 s 5.70 mb 95.32° 45.4° Action show
CN.NBC5.--.HHZ 2017-04-20 23:13:37.160 199.7 4.46 s 5.60 mB_BB 88.77° 25.0° Action show
CN.LLLB.--.HHZ 2017-04-20 23:13:48.150 516.7 5.82 s 5.90 mB_BB 84.43° 30.4° Action show
RV.MKRVA.--.HHZ 2017-04-20 23:14:22.069 36.2 0.26 s 6.20 mb 88.68° 35.6° Action show
RV.MKRVA.--.HHZ 2017-04-20 23:14:44.269 1078.9 0.22 s 6.30 mB_BB 88.68° 35.6° Action show
IU.HNR.00.BHZ 2017-04-20 23:15:24.309 2566.1 15.90 s 5.30 Ms_BB 27.43° 289.9° Action show
CN.NBC4.--.HHZ 2017-04-20 23:15:28.920 221.8 5.10 s 5.60 mB_BB 88.36° 27.1° Action show
IU.SNZO.00.BHZ 2017-04-20 23:16:50.555 2853.5 15.55 s 5.20 Ms_BB 22.77° 202.4° Action show
Channel Phase Time Time Residual Direction Event Distance Event Azimuth Automatic? Defined By Action
IU.AFI.00.BHZ Pn 2017-04-20 23:01:02.960 -4.90 s _ 6.97° 18.3° yes Time Action show
IU.RAR.00.BHZ Pn 2017-04-20 23:02:25.910 -9.10 s _ 13.33° 95.2° yes Time Action show
IU.HNR.00.BHZ P 2017-04-20 23:05:12.160 1.00 s _ 27.43° 289.9° yes Time Action show
IU.CTAO.00.BHZ P 2017-04-20 23:06:35.259 -1.30 s _ 37.19° 263.6° yes Time Action show
IU.PMG.00.BHZ P 2017-04-20 23:06:51.910 0 s _ 39.01° 280.6° yes Time Action show
II.TAU.00.BHZ P 2017-04-20 23:06:52.759 -0.70 s _ 39.23° 226.5° yes Time Action show
IU.WAKE.00.BHZ P 2017-04-20 23:07:32.660 0.70 s _ 43.91° 333.2° yes Time Action show
IU.GUMO.00.BHZ P 2017-04-20 23:08:40.460 -0.10 s _ 52.78° 306.5° yes Time Action show
IU.SBA.00.BHZ P 2017-04-20 23:09:19.589 1.90 s _ 58.07° 184.7° yes Time Action show
IU.NWAO.00.BHZ P 2017-04-20 23:09:42.509 -0.60 s _ 61.65° 242.9° yes Time Action show
IU.ADK.00.BHZ P 2017-04-20 23:10:48.660 -0.80 s _ 72.19° 358.3° yes Time Action show
IU.MAJO.00.BHZ P 2017-04-20 23:10:52.210 0.10 s _ 72.55° 321.3° yes Time Action show
II.PFO.00.BHZ P 2017-04-20 23:11:16.859 -0.60 s _ 76.89° 46.4° yes Time Action show
IU.YSS.00.BHZ P 2017-04-20 23:11:22.539 1.10 s _ 77.69° 331.3° yes Time Action show
US.TPNV.00.BHZ P 2017-04-20 23:11:29.519 0.40 s _ 78.98° 43.7° yes Time Action show
IU.TUC.00.BHZ P 2017-04-20 23:11:35.309 0 s _ 80.13° 50.2° yes Time Action show
US.WVOR.00.BHZ P 2017-04-20 23:11:39.200 0.20 s _ 80.85° 38.2° yes Time Action show
US.WUAZ.00.BHZ P 2017-04-20 23:11:43.799 1.50 s _ 81.43° 47.2° yes Time Action show
US.ELK.00.BHZ P 2017-04-20 23:11:44.569 0 s _ 81.85° 41.1° yes Time Action show
US.HAWA.00.BHZ P 2017-04-20 23:11:49.750 0.50 s _ 82.85° 34.7° yes Time Action show
US.DUG.00.BHZ P 2017-04-20 23:11:50.849 0.20 s _ 83.05° 42.6° yes Time Action show
US.BMO.00.BHZ P 2017-04-20 23:11:51.170 0.40 s _ 83.10° 36.9° yes Time Action show
US.MNTX.00.BHZ P 2017-04-20 23:11:54.769 0.20 s _ 83.79° 53.1° yes Time Action show
US.HLID.00.BHZ P 2017-04-20 23:11:56.049 0.50 s _ 84.00° 39.2° yes Time Action show
CN.LLLB.--.HHZ P 2017-04-20 23:11:57.539 0.20 s _ 84.43° 30.4° yes Time Action show
US.HWUT.00.BHZ P 2017-04-20 23:11:58.400 -0.30 s _ 84.62° 42.0° yes Time Action show
IU.ANMO.00.BHZ P 2017-04-20 23:11:58.809 0.10 s _ 84.58° 49.8° yes Time Action show
IU.MA2.00.BHZ P 2017-04-20 23:11:59.910 0.40 s _ 84.90° 342.8° yes Time Action show
US.NEW.00.BHZ P 2017-04-20 23:12:01.299 -0.50 s _ 85.30° 34.2° yes Time Action show
US.AHID.00.BHZ P 2017-04-20 23:12:03.869 0.50 s _ 85.55° 41.2° yes Time Action show
US.MSO.00.BHZ P 2017-04-20 23:12:06.819 0.60 s _ 86.17° 36.7° yes Time Action show
US.BOZ.00.BHZ P 2017-04-20 23:12:09.369 0 s _ 86.79° 38.6° yes Time Action show
IU.COLA.00.BHZ P 2017-04-20 23:12:11.160 -1.10 s _ 87.53° 10.9° yes Time Action show
US.LKWY.00.BHZ P 2017-04-20 23:12:11.619 1.30 s _ 86.95° 40.0° yes Time Action show
RV.HSPGA.--.HHZ P 2017-04-20 23:12:14.400 0.40 s _ 87.79° 34.7° yes Time Action show
US.ISCO.00.BHZ P 2017-04-20 23:12:16.319 2.90 s _ 87.55° 45.9° yes Time Action show
US.AMTX.00.BHZ P 2017-04-20 23:12:16.400 1.00 s _ 88.01° 51.7° yes Time Action show
TD.TD009.--.HHZ P 2017-04-20 23:12:16.869 0.90 s _ 88.20° 31.3° yes Time Action show
CN.NBC4.--.HHZ P 2017-04-20 23:12:16.980 0.60 s _ 88.36° 27.1° yes Time Action show
TD.TD09A.--.HHZ P 2017-04-20 23:12:17.650 0.20 s _ 88.54° 30.8° yes Time Action show
RV.WAPA.--.BHZ P 2017-04-20 23:12:17.799 0 s _ 88.64° 28.0° yes Time Action show
RV.MKRVA.--.HHZ P 2017-04-20 23:12:18.430 0.20 s _ 88.68° 35.6° yes Time Action show
US.EGAK.00.BHZ P 2017-04-20 23:12:18.670 0.50 s _ 88.77° 13.5° yes Time Action show
CN.NBC5.--.HHZ P 2017-04-20 23:12:18.990 0.70 s _ 88.77° 25.0° yes Time Action show
RV.BRLDA.--.HHZ P 2017-04-20 23:12:19.029 0.40 s _ 88.78° 29.5° yes Time Action show
TD.TD008.--.HHZ P 2017-04-20 23:12:19.589 0.30 s _ 88.92° 31.3° yes Time Action show
RV.WTMTA.--.HHZ P 2017-04-20 23:12:19.730 0.30 s _ 88.98° 27.6° yes Time Action show
CN.NBC6.--.HHZ P 2017-04-20 23:12:24.299 0.20 s _ 90.01° 24.7° yes Time Action show
US.WMOK.00.BHZ P 2017-04-20 23:12:26.099 0.90 s _ 90.10° 52.9° yes Time Action show
CN.NBC2.--.HHZ P 2017-04-20 23:12:26.779 1.00 s _ 90.38° 23.4° yes Time Action show
RV.STPRA.--.HHZ P 2017-04-20 23:12:27.680 1.30 s _ 90.46° 28.9° yes Time Action show
IU.RSSD.00.BHZ P 2017-04-20 23:12:27.809 0 s _ 90.66° 42.7° yes Time Action show
IU.HKT.00.BHZ P 2017-04-20 23:12:28.660 2.10 s _ 90.41° 58.3° yes Time Action show
CN.NBC3.--.HHZ P 2017-04-20 23:12:29.460 1.00 s _ 90.97° 24.1° yes Time Action show
RV.HILA.--.BHZ P 2017-04-20 23:12:32.970 0.90 s _ 91.72° 26.2° yes Time Action show
US.DGMT.00.BHZ P 2017-04-20 23:12:36.950 0.40 s _ 92.62° 38.8° yes Time Action show
CN.INK.--.BHZ P 2017-04-20 23:12:39.670 0 s _ 93.41° 14.0° yes Time Action show
US.ECSD.00.BHZ P 2017-04-20 23:12:48.720 -0.30 s _ 95.32° 45.4° yes Time Action show
II.AAK.00.BHZ PKPdf 2017-04-20 23:18:13.859 -0.60 s _ 119.28° 307.9° yes Time Action show
II.BRVK.00.BHZ PKPdf 2017-04-20 23:18:16.960 -1.40 s _ 121.59° 320.2° yes Time Action show
II.ARU.00.BHZ PKPdf 2017-04-20 23:18:29.559 0.30 s _ 127.36° 326.1° yes Time Action show
IU.LSZ.00.BHZ PKPdf 2017-04-20 23:18:52.710 1.60 s _ 138.22° 213.0° yes Time Action show
IU.GNI.00.BHZ PKPdf 2017-04-20 23:18:58.259 1.50 s _ 141.67° 309.0° yes Time Action show
II.BFO.00.BHZ PKPbc 2017-04-20 23:19:20.309 -0.30 s _ 152.25° 356.6° yes Time Action show

Ground Motion

None

Shake Maps

None