Event 20210504-12
2021-05-04 18:10:50.160 UTC 55 km 5.2 mb
37.3003°N, 141.6056°E
North Pacific Ocean; 52 km from Tomioka, Fukushima, Japan
Time Error: 0.88 s Analysis Type: Manual
Time RMS: 0.43 s Num. Stations: 30
Depth Error: 21 km Num. Phases: 30
Reference Elevation: 0 km Max. Intensity (MMI):
Azimuth Gap: 151° Effects Type: Seismic
 
UNCHECKED, FULLY AUTOMATIC LOCATION
Magnitudes
Preferred Magnitude Stations Error Author Action
5.2 M 0 0 NCMS Action show
Emblem favorite 5.2 mb 0 0 BH Action show
5.3 M 20 0.5 NEIC Action show
5.2 mb 20 0.1 NEIC Action show
 
Origin Details
Ellipse Major: 10.40 km Seismic Moment:
Ellipse Minor: 7.10 km Corner Frequency:
Ellipse Strike: 156.0° Stress Drop:
Min. Distance: 19.71° Source Radius:
Max. Distance: 90.56° Location Method: Inversion
Fixed Location: no Author: NEIC
Fixed Depth: no Event Type: Earthquake
Fixed Phase: no External Event ID: HYDRA_RED@65880
Fixed Time: no External Origin ID: HYDRA_RED@123990
 
Error Ellipse
Length Azimuth Dip Action
Maximum 32.10 km 81.00° 76.00° Action show
Intermediate 24.40 km 339.00° 2.00° Action show
Minimum 15.20 km 249.00° 12.00° Action show
 

None

Channel Time Amplitude Period/Duration Magnitude Event Distance Event Azimuth Action
IU.PET.00.BHZ 2021-05-04 18:15:16.890 UTC 300.8 1.20 s 5.5 mb 19.71° 31.7° Action show
IU.MAKZ.00.BHZ 2021-05-04 18:19:05.164 UTC 42.1 0.85 s 5.2 mb 44.32° 302.0° Action show
II.KAPI.00.BHZ 2021-05-04 18:19:16.213 UTC 15.0 1.05 s 4.8 mb 46.77° 210.6° Action show
IU.COLA.00.BHZ 2021-05-04 18:19:31.160 UTC 23.6 0.75 s 5.3 mb 48.77° 32.3° Action show
II.AAK.00.BHZ 2021-05-04 18:19:57.859 UTC 26.3 0.80 s 5.3 mb 50.50° 298.3° Action show
IU.KBL.--.BHZ 2021-05-04 18:20:50.944 UTC 16.3 1.00 s 5.1 mb 57.46° 291.0° Action show
II.KIV.00.BHZ 2021-05-04 18:22:14.009 UTC 212.0 0.80 s 6.1 mb 70.85° 311.0° Action show
AE.SHM.--.HHZ 2021-05-04 18:22:15.789 UTC 31.3 0.74 s 5.3 mb 71.35° 289.1° Action show
II.FFC.00.BHZ 2021-05-04 18:22:17.609 UTC 22.0 0.90 s 5.1 mb 73.40° 32.8° Action show
II.UOSS.10.BHZ 2021-05-04 18:22:18.835 UTC 13.7 0.75 s 5.0 mb 71.87° 287.9° Action show
AE.ALN.--.HHZ 2021-05-04 18:22:23.559 UTC 12.3 0.64 s 5.0 mb 72.70° 287.4° Action show
IU.GNI.00.BHZ 2021-05-04 18:22:24.849 UTC 21.6 0.90 s 5.1 mb 71.67° 306.8° Action show
QK.SLY.--.HHZ 2021-05-04 18:22:29.099 UTC 8.2 0.88 s 4.7 mb 73.71° 302.6° Action show
QK.KSDD.--.HHZ 2021-05-04 18:22:30.279 UTC 13.9 0.74 s 5.0 mb 73.83° 302.0° Action show
IU.KIEV.00.BHZ 2021-05-04 18:22:32.259 UTC 125.8 0.70 s 5.9 mb 74.18° 322.4° Action show
AE.MZR.--.HHZ 2021-05-04 18:22:37.109 UTC 23.7 0.84 s 5.2 mb 75.02° 287.7° Action show
AE.MKZ.--.HHZ 2021-05-04 18:22:40.690 UTC 33.8 0.74 s 5.4 mb 75.73° 288.1° Action show
II.BFO.00.BHZ 2021-05-04 18:23:21.670 UTC 5.8 0.90 s 4.7 mb 85.14° 330.9° Action show
GE.EIL.--.BHZ 2021-05-04 18:23:28.740 UTC 22.4 0.90 s 5.2 mb 84.36° 303.2° Action show
IU.NWAO.00.BHZ 2021-05-04 18:24:55.029 UTC 72.3 1.90 s 5.3 mb 73.47° 201.3° Action show
Channel Phase Time Time Residual Direction Event Distance Event Azimuth Automatic? Defined By Action
IU.PET.00.BHZ P 2021-05-04 18:15:14.390 UTC -0.40 s _ 19.71° 31.7° no Time Action show
IU.MAKZ.00.BHZ P 2021-05-04 18:18:54.839 UTC 0.20 s _ 44.32° 302.0° yes Time Action show
II.KURK.10.BHZ P 2021-05-04 18:19:06.890 UTC -0.10 s _ 45.89° 308.0° yes Time Action show
II.KDAK.00.BHZ P 2021-05-04 18:19:13.940 UTC -0.10 s _ 46.80° 42.0° no Time Action show
II.KAPI.00.BHZ P 2021-05-04 18:19:14.640 UTC 0.40 s _ 46.77° 210.6° yes Time Action show
IU.COLA.00.BHZ P 2021-05-04 18:19:30.069 UTC 0.90 s _ 48.77° 32.3° no Time Action show
II.AAK.00.BHZ P 2021-05-04 18:19:42.710 UTC -0.20 s _ 50.50° 298.3° yes Time Action show
IU.KBL.--.BHZ P 2021-05-04 18:20:33.869 UTC 0 s _ 57.46° 291.0° yes Time Action show
II.KIV.00.BHZ P 2021-05-04 18:22:01.799 UTC 0.60 s _ 70.85° 311.0° no Time Action show
AE.SHM.--.HHZ P 2021-05-04 18:22:05.220 UTC 0.80 s _ 71.35° 289.1° yes Time Action show
IU.GNI.00.BHZ P 2021-05-04 18:22:06.700 UTC 0.30 s _ 71.67° 306.8° no Time Action show
OM.ASH.--.HHZ P 2021-05-04 18:22:07.759 UTC -1.40 s _ 72.13° 287.8° no Time Action show
II.UOSS.10.BHZ P 2021-05-04 18:22:08.160 UTC 0.50 s _ 71.87° 287.9° no Time Action show
DN.HAT.--.HHZ P 2021-05-04 18:22:08.289 UTC -0.10 s _ 71.99° 287.9° no Time Action show
AE.ALN.--.HHZ P 2021-05-04 18:22:12.250 UTC -0.30 s _ 72.70° 287.4° no Time Action show
DN.ASU.--.HHZ P 2021-05-04 18:22:13.009 UTC 0.40 s _ 72.71° 288.1° no Time Action show
II.FFC.00.BHZ P 2021-05-04 18:22:15.809 UTC -0.40 s _ 73.40° 32.8° yes Time Action show
IU.NWAO.00.BHZ P 2021-05-04 18:22:15.930 UTC -0.80 s _ 73.47° 201.3° no Time Action show
QK.SLY.--.HHZ P 2021-05-04 18:22:18.569 UTC 0 s _ 73.71° 302.6° yes Time Action show
QK.KSDD.--.HHZ P 2021-05-04 18:22:19.279 UTC 0.20 s _ 73.83° 302.0° yes Time Action show
UE.UMZA.--.HHZ P 2021-05-04 18:22:19.359 UTC -0.30 s _ 73.90° 286.6° yes Time Action show
IU.KIEV.00.BHZ P 2021-05-04 18:22:20.660 UTC -0.10 s _ 74.18° 322.4° yes Time Action show
QK.KHWL.--.HHZ P 2021-05-04 18:22:21.420 UTC -0.10 s _ 74.23° 303.7° no Time Action show
AE.MZR.--.HHZ P 2021-05-04 18:22:26.099 UTC 0 s _ 75.02° 287.7° yes Time Action show
AE.MKZ.--.HHZ P 2021-05-04 18:22:30.089 UTC -0.10 s _ 75.73° 288.1° yes Time Action show
IU.ANTO.00.BHZ P 2021-05-04 18:22:49.309 UTC -0.10 s _ 79.20° 312.2° no Time Action show
GE.EIL.--.BHZ P 2021-05-04 18:23:17.039 UTC 0.40 s _ 84.36° 303.2° yes Time Action show
IU.ANMO.10.HHZ P 2021-05-04 18:23:17.410 UTC 0.90 s _ 84.30° 49.9° no Time Action show
II.BFO.00.BHZ P 2021-05-04 18:23:20.769 UTC 0.50 s _ 85.14° 330.9° no Time Action show
IU.CCM.10.BHZ P 2021-05-04 18:23:46.460 UTC 0 s _ 90.56° 38.9° no Time Action show

Ground Motion

No ground motions for this event.