This event was automatically detected and need to be confirmed by one of our analysts.
Type Event
Magnitude 5.4 mb
Local datetime 2021/08/04 13:40
Universal datetime 2021/08/04 04:40
Latitude 36.77 ° ± 4 km
Longitude 141.36 ° ± 4 km
Depth 10 km (from location) ± 0.0 km

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See the seismogram of this event.

Near cities

This table shows only the most populated cities around the epicenter.
Name Distance (km) Population
Tokyo  188 8.336599e+06
Yokohama  217 3.574443e+06
Kawasaki  203 1.306785e+06
Sendai  171 1.037562e+06
Hachiōji  221 579399
Niigata  242 505272
Utsunomiya  136 449865
Iwaki  53 357309
Kōriyama  113 340560
Kawagoe  193 337931
Fukushima  134 294237
Maebashi  209 282711
Yamagata  190 254538
Mito  91 246538
Nagaoka  235 195318

Past seismicity

  This map shows only the 0 most significant earthquakes around this event.

Event details

Parameters

Evaluation status
RMS 1.76
Azimuthal gap 84.54 °
Number of stations used 43
Number of phases used 43

Webservices

The data of this event are available in various formats (QuakeML, GeoJSON and text) through the following links :

QuakeML GeoJSON Text

Phases

Network Station Phase Time Residual (s) Azimuth (°) Distance (°) Mode
IU MAJO P 04:41:11.92 1.45 265.85 2.54 Automatic
II ERM P 04:41:51.7 1.2 14.25 5.42 Automatic
IU YSS P 04:42:58.50 2.61 5.37 10.24 Automatic
IU PET P 04:45:05.57 1.14 31.11 20.24 Automatic
IU GUMO P 04:45:39.84 2.75 171.39 23.39 Automatic
IU MA2 P 04:45:40.82 0.86 11.93 23.6 Automatic
IU YAK P 04:46:05.87 1.22 347.62 26.29 Automatic
IU ULN P 04:46:16.22 1.04 304.75 27.4 Automatic
IU WAKE P 04:46:23.74 1.91 121.42 28.2 Automatic
II TLY P 04:46:43.67 1.85 311.44 30.4 Automatic
IU BILL P 04:47:16.2 0.48 16.33 34.28 Automatic
IU CHTO P 04:48:10.64 -3.18 255.93 41.17 Automatic
IU MAKZ P 04:48:40.7 0.22 302.51 44.3 Automatic
II KURK P 04:48:52.62 -0.09 308.42 45.92 Automatic
II KDAK P 04:49:00.64 -1.82 41.63 47.17 Automatic
IU COLA P 04:49:17.54 -0.23 32 49.16 Automatic
II AAK P 04:49:28.47 0.77 298.65 50.43 Automatic
II ALE P 04:50:37.77 0.05 3.47 60.14 Automatic
IU KBS P 04:50:42.92 1.49 350.19 60.68 Automatic
II PALK P 04:50:50.9 -1.43 257.64 62.28 Automatic
IU KEV P 04:51:00.87 0.86 339.36 63.43 Automatic
II MSVF P 04:51:09.22 4.21 140.94 64.58 Automatic
II OBN P 04:51:29.82 -0.1 323.4 68.03 Automatic
IU COR P 04:51:35.67 3.09 49.67 68.46 Automatic
II KIV P 04:51:47.27 0.07 311.11 70.82 Automatic
IU GNI P 04:51:53.42 1.41 306.86 71.62 Automatic
II UOSS P 04:51:50.97 -1.4 287.91 71.71 Automatic
II FFC P 04:52:02.7 -2.22 32.53 73.67 Automatic
IU KIEV P 04:52:06.32 -1.16 322.43 74.21 Automatic
IU KONO P 04:52:15.87 -0.21 337.11 75.7 Automatic
IU SFJD P 04:52:16.62 -0.18 4.8 75.83 Automatic
II BORG P 04:52:28.52 1.83 352.53 77.57 Automatic
II PFO P 04:52:32.9 -2.46 56.02 79.01 Automatic
IU ANTO P 04:52:35.13 -0.34 312.2 79.17 Automatic
IU RSSD P 04:52:36.2 -2.84 41.55 79.78 Automatic
II RAYN P 04:52:40.99 -1.8 292.39 80.56 Automatic
II ESK P 04:52:56.22 -0.02 340.59 83.06 Automatic
IU ANMO P 04:53:01.12 -2.62 49.68 84.55 Automatic
II BFO P 04:53:05.77 -1.32 330.81 85.19 Automatic
IU CCM P 04:53:30.67 -3.21 38.73 90.8 Automatic
IU WVT P 04:53:46.42 -2.26 37.8 94.01 Automatic
IU HKT P 04:53:50.4 -0.42 46.92 94.41 Automatic
IU SSPA P 04:53:50.44 -1.18 28.8 94.64 Automatic