Event 20210427-36
2021-04-27 20:18:03.420 UTC 214 km 4.5 mb
27.7403°N, 140.8308°E
Phillipine Sea; 152 km from Nishimachi, Tokyo, Japan
Time Error: 1.46 s Analysis Type: Manual
Time RMS: 0.72 s Num. Stations: 0
Depth Error: 25 km Num. Phases: 22
Reference Elevation: 0 km Max. Intensity (MMI):
Azimuth Gap: 163° Effects Type: Seismic
 
UNCHECKED, FULLY AUTOMATIC LOCATION
Magnitudes
Preferred Magnitude Stations Error Author Action
Emblem favorite 4.5 mb BH Action show
4.6 M 13 0.5 NEIC Action show
4.5 mb 13 0.2 NEIC Action show
 
Origin Details
Ellipse Major: 37.00 km Seismic Moment:
Ellipse Minor: 16.10 km Corner Frequency:
Ellipse Strike: 162.0° Stress Drop:
Min. Distance: 49.35° Source Radius:
Max. Distance: 81.82° Location Method: Inversion
Fixed Location: no Author: NCMS
Fixed Depth: no Event Type: Earthquake
Fixed Phase: no External Event ID: HYDRA_RED@65424
Fixed Time: no External Origin ID: HYDRA_RED@123105
 
Error Ellipse
Length Azimuth Dip Action
Maximum 83.60 km 344.00° 1.00° Action show
Intermediate 37.60 km 254.00° 5.00° Action show
Minimum 28.60 km 92.00° 83.00° Action show
 

None

Channel Time Amplitude Period/Duration Magnitude Event Distance Event Azimuth Action
IU.MAKZ.00.BHZ 2021-04-27 20:26:32.534 UTC 14.8 1.65 s 4.2 mb 49.86° 309.5° Action show
II.AAK.00.BHZ 2021-04-27 20:27:13.210 UTC 7.4 0.70 s 4.5 mb 55.39° 304.6° Action show
II.NIL.00.BHZ 2021-04-27 20:27:31.410 UTC 14.8 0.60 s 4.9 mb 57.94° 294.3° Action show
AE.SHM.--.HHZ 2021-04-27 20:29:15.880 UTC 8.9 0.60 s 4.7 mb 74.47° 291.7° Action show
AE.MSF.--.HHZ 2021-04-27 20:29:17.220 UTC 4.0 0.72 s 4.2 mb 74.67° 291.0° Action show
AE.ALN.--.HHZ 2021-04-27 20:29:21.789 UTC 4.6 0.66 s 4.3 mb 75.53° 289.9° Action show
II.KIV.00.BHZ 2021-04-27 20:29:33.210 UTC 27.9 0.90 s 5.0 mb 77.24° 313.0° Action show
AE.MZR.--.HHZ 2021-04-27 20:29:34.319 UTC 7.4 0.68 s 4.5 mb 77.86° 289.8° Action show
AE.MKZ.--.HHZ 2021-04-27 20:29:38.400 UTC 8.6 0.64 s 4.6 mb 78.63° 290.1° Action show
MM.KI05.--.HHZ 2021-04-27 20:29:39.980 UTC 10.4 0.90 s 4.6 mb 78.78° 304.6° Action show
QK.SLY.--.HHZ 2021-04-27 20:29:41.240 UTC 2.1 0.96 s 3.8 mb 78.89° 304.4° Action show
IU.KIEV.00.BHZ 2021-04-27 20:29:56.910 UTC 25.2 0.80 s 5.0 mb 81.91° 323.5° Action show
II.FFC.00.BHZ 2021-04-27 20:29:57.460 UTC 7.5 0.70 s 4.5 mb 82.02° 31.4° Action show
Channel Phase Time Time Residual Direction Event Distance Event Azimuth Automatic? Defined By Action
IU.MAKZ.00.BHZ P 2021-04-27 20:26:31.559 UTC 0.40 s _ 49.86° 309.5° yes Time Action show
II.KURK.10.BHZ P 2021-04-27 20:26:48.390 UTC 0 s _ 52.19° 314.5° yes Time Action show
II.AAK.00.BHZ P 2021-04-27 20:27:12.359 UTC 0.10 s _ 55.39° 304.6° yes Time Action show
II.NIL.00.BHZ P 2021-04-27 20:27:30.910 UTC 0.50 s _ 57.94° 294.3° yes Time Action show
OM.BID.--.HHZ P 2021-04-27 20:29:11.250 UTC -0.80 s _ 73.74° 288.5° yes Time Action show
AE.SHM.--.HHZ P 2021-04-27 20:29:15.440 UTC -0.60 s _ 74.47° 291.7° yes Time Action show
OM.SOH.--.HHZ P 2021-04-27 20:29:16.920 UTC -1.40 s _ 74.84° 289.7° yes Time Action show
AE.MSF.--.HHZ P 2021-04-27 20:29:17.059 UTC -0.30 s _ 74.67° 291.0° yes Time Action show
DN.HAT.--.HHZ P 2021-04-27 20:29:17.930 UTC -0.80 s _ 74.91° 290.5° yes Time Action show
OM.ASH.--.HHZ P 2021-04-27 20:29:18.420 UTC -1.00 s _ 75.03° 290.4° yes Time Action show
DN.NAZ.--.HHZ P 2021-04-27 20:29:19.140 UTC -1.40 s _ 75.23° 290.8° yes Action show
DN.FAQ.--.HHZ P 2021-04-27 20:29:20.170 UTC -1.30 s _ 75.39° 290.6° yes Action show
AE.ALN.--.HHZ P 2021-04-27 20:29:21.369 UTC -0.90 s _ 75.53° 289.9° yes Action show
UE.UMZA.--.HHZ P 2021-04-27 20:29:26.430 UTC -1.80 s _ 76.57° 288.8° yes Action show
II.KIV.00.BHZ P 2021-04-27 20:29:32.609 UTC 1.30 s _ 77.24° 313.0° yes Time Action show
AE.MZR.--.HHZ P 2021-04-27 20:29:33.950 UTC -1.50 s _ 77.86° 289.8° yes Action show
AE.MKZ.--.HHZ P 2021-04-27 20:29:37.980 UTC -1.70 s _ 78.63° 290.1° yes Action show
MM.KI05.--.HHZ P 2021-04-27 20:29:39.380 UTC -0.70 s _ 78.78° 304.6° yes Action show
QK.SLY.--.HHZ P 2021-04-27 20:29:40.019 UTC -0.80 s _ 78.89° 304.4° yes Action show
IU.KIEV.00.BHZ P 2021-04-27 20:29:56.160 UTC -0.10 s _ 81.91° 323.5° yes Time Action show
II.FFC.00.BHZ P 2021-04-27 20:29:56.309 UTC -2.20 s _ 82.02° 31.4° yes Time Action show

Ground Motion

No ground motions for this event.