This event was automatically detected and need to be confirmed by one of our analysts.
Type Event
Magnitude 5.1 mb
Local datetime 2025/03/20 18:15
Universal datetime 2025/03/20 09:15
Latitude 37.50 ° ± 14 km
Longitude 138.70 ° ± 17 km
Depth 157 km (from location) ± 10 km

Have you felt an earthquake ?

You can participate to science by bringing your testimony.

Testify !
See the seismogram of this event.

Near cities

This table shows only the most populated cities around the epicenter.
Name Distance (km) Population
Niigata  55 505272
Utsunomiya  148 449865
Nagano  106 360176
Iwaki  200 357309
Kōriyama  149 340560
Kawagoe  189 337931
Toyama  158 325532
Fukushima  158 294237
Maebashi  127 282711
Yamagata  166 254538
Matsumoto  154 210667
Nagaoka  15 195318
Takaoka  177 170077
Sakata  187 100446
Tsuruoka  166 99820

Past seismicity

  This map shows the most significant earthquake around this event.

Event details

Parameters

Evaluation status
RMS 0.67
Azimuthal gap 186.53 °
Number of stations used 9
Number of phases used 9

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 09:16:06.27 0.09 202.81 1.04 Automatic
IU YSS P 09:17:58.75 -0.35 16.28 9.92 Automatic
IU MA2 P 09:20:35.17 0.1 15.47 23.39 Automatic
IU YAK P 09:20:52.32 1.2 350.04 25.16 Automatic
IU ULN P 09:20:51.77 -0.56 304.36 25.24 Automatic
IU TIXI P 09:22:13.17 -0.49 354.55 34.51 Automatic
IU MAKZ P 09:23:19.2 1.13 301.44 42.12 Automatic
II KURK P 09:23:30.77 -0.64 307.55 43.8 Automatic
II RAYN P 09:27:23.89 -0.48 290.8 78.33 Automatic