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 05:43
Universal datetime 2021/08/03 20:43
Latitude 36.35 ° ± 7 km
Longitude 141.80 ° ± 5 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  199 8.336599e+06
Yokohama  223 3.574443e+06
Kawasaki  210 1.306785e+06
Sendai  226 1.037562e+06
Hachiōji  236 579399
Utsunomiya  174 449865
Iwaki  113 357309
Kōriyama  173 340560
Kawagoe  213 337931
Fukushima  194 294237
Maebashi  245 282711
Yamagata  250 254538
Mito  119 246538
Nagaoka  289 195318
Kōfu  300 190000

Past seismicity

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

Event details

Parameters

Evaluation status
RMS 1.52
Azimuthal gap 161.3 °
Number of stations used 27
Number of phases used 27

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 20:44:00.82 0.62 274.89 2.9 Automatic
IU YSS P 20:45:45.80 -0.25 3.55 10.63 Automatic
IU INCN P 20:46:12.32 4.59 279.84 12.17 Automatic
IU MA2 P 20:48:27.47 -0.6 11.22 23.94 Automatic
IU YAK P 20:48:52.87 -0.99 347.37 26.77 Automatic
IU ULN P 20:49:04.52 -0.23 305.28 27.93 Automatic
II TLY P 20:49:31.32 -0.11 311.83 30.94 Automatic
IU CHTO P 20:50:58.69 -1.98 256.75 41.41 Automatic
IU MAKZ P 20:51:28.22 -0.64 302.93 44.83 Automatic
II KAPI P 20:51:36.97 -0.75 211.19 46.23 Automatic
II KURK P 20:51:40.77 -1 308.78 46.46 Automatic
II KDAK P 20:51:46.99 -0.92 41.39 47.25 Automatic
II AAK P 20:52:16.47 0.08 299.07 50.94 Automatic
II ALE P 20:53:24.62 -0.64 3.51 60.54 Automatic
IU KBS P 20:53:30.32 0.84 350.3 61.15 Automatic
II OBN P 20:54:16.87 -1.31 323.65 68.58 Automatic
II KIV P 20:54:34.72 -0.6 311.4 71.36 Automatic
IU GNI P 20:54:41.42 1.37 307.16 72.15 Automatic
II UOSS P 20:54:39.22 -0.78 288.27 72.18 Automatic
II FFC P 20:54:52.97 2.89 32.64 73.83 Automatic
IU KIEV P 20:54:53.82 -1.66 322.69 74.76 Automatic
IU KONO P 20:55:03.47 -0.42 337.33 76.22 Automatic
II BORG P 20:55:15.32 1.24 352.73 78.04 Automatic
II RAYN P 20:55:28.77 -1.46 292.69 81.05 Automatic
IU ANMO P 20:55:49.92 1.33 49.89 84.55 Automatic
II BFO P 20:55:53.12 -1.47 331.06 85.73 Automatic
IU CCM P 20:56:22.4 2.84 39 90.91 Automatic