Earthquake 20170421-2

Earthquake 20170421-2
2017-04-21 04:48:44.740 136.10 km 4.41 mb
17.2863°S, 173.8586°W
South Pacfic Ocean; 145 km from Holonga, Vava‘u, Tonga
432 km N of Nuku'alofa, Tonga
Time Error: 0.50 s Num. Stations: 12
Time RMS: 0.25 s Num. Phases: 12
Depth Error: 13.90 km Max. Intensity (MMI):
Azimuth Gap: 131° Effects Type: Seismic
Analysis Type: Automatic
 
UNCHECKED, FULLY AUTOMATIC LOCATION
Magnitudes
Preferred Magnitude Stations Error Author Action
Emblem favorite 4.41 mb NEIC Action show
4.50 M 20 0.4 NEIC Action show
4.40 mb 20 0.1 NEIC Action show
 
Origin Details
Ellipse Major: 27.20 km Fixed Depth: yes
Ellipse Minor: 10.90 km Fixed Phase: yes
Ellipse Strike: 121.0° Fixed Time: yes
Min. Distance: 3.91° Author: NEIC
Max. Distance: 89.97° Event Type: Earthquake
Fixed Location: yes External Event ID: HYDRA_RED@6472
Location Method: Inversion External Origin ID: HYDRA_RED@13103
 
Error Ellipse
Length Azimuth Dip Action
Maximum 65.00 km 301.00° 11.00° Action show
Intermediate 26.20 km 208.00° 14.00° Action show
Minimum 16.20 km 68.00° 71.00° Action show
 

None

Channel Time Amplitude Period/Duration Magnitude Event Distance Event Azimuth Action
IU.SBA.00.BHZ 2017-04-21 04:58:46.210 6.0 0.80 s 4.60 mb 61.34° 184.6° Action show
IU.TUC.00.BHZ 2017-04-21 05:00:29.460 4.4 0.90 s 4.20 mb 77.92° 50.6° Action show
US.WVOR.00.BHZ 2017-04-21 05:00:30.619 10.4 1.30 s 4.40 mb 78.18° 38.5° Action show
US.ELK.00.BHZ 2017-04-21 05:00:35.525 3.2 0.90 s 4.10 mb 79.28° 41.4° Action show
US.HLID.00.BHZ 2017-04-21 05:00:47.375 4.7 0.95 s 4.20 mb 81.36° 39.3° Action show
US.MNTX.00.BHZ 2017-04-21 05:00:49.494 8.2 1.35 s 4.30 mb 81.70° 53.3° Action show
US.HWUT.00.BHZ 2017-04-21 05:00:50.615 4.4 0.95 s 4.20 mb 82.08° 42.2° Action show
IU.ANMO.00.BHZ 2017-04-21 05:00:53.109 9.2 1.30 s 4.40 mb 82.35° 50.0° Action show
US.BW06.00.BHZ 2017-04-21 05:00:59.869 8.7 0.65 s 4.80 mb 83.96° 41.9° Action show
US.BOZ.00.BHZ 2017-04-21 05:01:01.325 5.9 0.90 s 4.40 mb 84.13° 38.7° Action show
US.LKWY.00.BHZ 2017-04-21 05:01:03.769 6.6 0.90 s 4.50 mb 84.34° 40.1° Action show
US.EGAK.00.BHZ 2017-04-21 05:01:06.845 4.1 1.05 s 4.20 mb 85.55° 13.4° Action show
US.ISCO.00.BHZ 2017-04-21 05:01:07.069 9.3 1.90 s 4.30 mb 85.15° 46.0° Action show
US.RLMT.00.BHZ 2017-04-21 05:01:07.375 2.9 1.00 s 4.10 mb 85.32° 40.0° Action show
RV.BRLDA.--.HHZ 2017-04-21 05:01:09.349 6.7 1.06 s 4.40 mb 85.85° 29.5° Action show
TD.TD008.--.HHZ 2017-04-21 05:01:10.359 4.4 0.72 s 4.40 mb 86.04° 31.3° Action show
RV.MKRVA.--.HHZ 2017-04-21 05:01:11.190 11.1 0.64 s 4.90 mb 85.93° 35.6° Action show
CN.NBC2.--.HHZ 2017-04-21 05:01:20.079 73.7 1.48 s 5.40 mb 87.31° 23.3° Action show
IU.RSSD.00.BHZ 2017-04-21 05:01:20.359 5.9 0.80 s 4.70 mb 88.14° 42.6° Action show
US.DGMT.00.BHZ 2017-04-21 05:01:29.244 11.9 0.95 s 4.90 mb 89.97° 38.7° Action show
Channel Phase Time Time Residual Direction Event Distance Event Azimuth Automatic? Defined By Action
IU.AFI.00.BHZ Pn 2017-04-21 04:49:43.309 -0.20 s _ 3.91° 31.1° yes Time Action show
II.MSVF.00.BHZ Pn 2017-04-21 04:50:34.809 0.10 s _ 7.73° 265.4° yes Time Action show
IU.SBA.00.BHZ P 2017-04-21 04:58:45.559 0 s _ 61.34° 184.6° yes Time Action show
IU.TUC.00.BHZ P 2017-04-21 05:00:27.660 -0.30 s _ 77.92° 50.6° yes Time Action show
US.WVOR.00.BHZ P 2017-04-21 05:00:29.220 0 s _ 78.18° 38.5° yes Time Action show
US.ELK.00.BHZ P 2017-04-21 05:00:35.500 0 s _ 79.28° 41.4° yes Time Action show
US.HLID.00.BHZ P 2017-04-21 05:00:46.450 0 s _ 81.36° 39.3° yes Time Action show
US.MNTX.00.BHZ P 2017-04-21 05:00:48.670 0.40 s _ 81.70° 53.3° yes Time Action show
US.HWUT.00.BHZ P 2017-04-21 05:00:49.789 -0.50 s _ 82.08° 42.2° yes Time Action show
IU.ANMO.00.BHZ P 2017-04-21 05:00:51.859 0 s _ 82.35° 50.0° yes Time Action show
US.BW06.00.BHZ P 2017-04-21 05:00:59.170 -0.80 s _ 83.96° 41.9° yes Time Action show
US.BOZ.00.BHZ P 2017-04-21 05:01:00.549 -0.10 s _ 84.13° 38.7° yes Time Action show
US.LKWY.00.BHZ P 2017-04-21 05:01:03.119 1.20 s _ 84.34° 40.1° yes Time Action show
US.ISCO.00.BHZ P 2017-04-21 05:01:05.869 -0.30 s _ 85.15° 46.0° yes Time Action show
US.EGAK.00.BHZ P 2017-04-21 05:01:06.069 -1.00 s _ 85.55° 13.4° yes Time Action show
US.RLMT.00.BHZ P 2017-04-21 05:01:06.650 -0.10 s _ 85.32° 40.0° yes Time Action show
RV.BRLDA.--.HHZ P 2017-04-21 05:01:08.740 -0.20 s _ 85.85° 29.5° yes Time Action show
RV.MKRVA.--.HHZ P 2017-04-21 05:01:08.859 -0.60 s _ 85.93° 35.6° yes Time Action show
TD.TD008.--.HHZ P 2017-04-21 05:01:09.299 -0.60 s _ 86.04° 31.3° yes Time Action show
CN.NBC2.--.HHZ P 2017-04-21 05:01:15.390 -0.30 s _ 87.31° 23.3° yes Time Action show
IU.RSSD.00.BHZ P 2017-04-21 05:01:18.410 -2.00 s _ 88.14° 42.6° yes Time Action show
US.DGMT.00.BHZ P 2017-04-21 05:01:28.970 0.30 s _ 89.97° 38.7° yes Time Action show

Ground Motion

None

Shake Maps

None