This event was automatically detected and need to be confirmed by one of our analysts.
Type Event
Magnitude 5.4 mb
Local datetime 2023/09/22 06:22
Universal datetime 2023/09/21 21:22
Latitude 31.02 ° ± 4 km
Longitude 141.96 ° ± 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  557 8.336599e+06
Yokohama  536 3.574443e+06
Nagoya  657 2.191279e+06
Kawasaki  542 1.306785e+06
Shizuoka  552 701561
Hamamatsu  569 605098
Hachiōji  570 579399
Utsunomiya  643 449865
Gifu  687 397714
Iwaki  677 357309
Kawagoe  589 337931
Maebashi  653 282711
Mito  609 246538
Kōfu  602 190000
Tsu  653 163461

Past seismicity

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

Event details

Parameters

Evaluation status
RMS 1.68
Azimuthal gap 115.12 °
Number of stations used 22
Number of phases used 22

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
II ERM P 21:24:51.12 -0.61 4.66 11.04 Automatic
IU INCN P 21:25:39.37 3.87 301.19 14.2 Automatic
IU YSS P 21:25:56.45 -1.83 2 15.95 Automatic
IU GUMO P 21:26:20.87 1.81 170.62 17.64 Automatic
IU TATO P 21:26:34.47 -1.93 256.53 19.02 Automatic
IU ULN P 21:28:35.62 0.13 312.52 31.39 Automatic
II TLY P 21:29:05.87 0.72 317.65 34.79 Automatic
IU CHTO P 21:29:54.49 0.15 262.91 40.59 Automatic
II KAPI P 21:30:01.74 -0.95 214.38 41.81 Automatic
IU MAKZ P 21:30:53.19 -0.72 307.11 48 Automatic
II KURK P 21:31:07.17 -2.33 312.41 50.03 Automatic
II KDAK P 21:31:17.92 -0.8 38.44 51.26 Automatic
IU CTAO P 21:31:15.84 -0.17 174.82 51.28 Automatic
II AAK P 21:31:37.37 -0.36 302.64 53.79 Automatic
IU COLA P 21:31:39.87 2.04 29.65 53.85 Automatic
IU KBS P 21:33:08.79 4.34 350.76 66.44 Automatic
II UOSS P 21:33:50.27 -1.04 289.87 74.04 Automatic
II KIV P 21:33:58.22 1.04 312.66 75.03 Automatic
II FFC P 21:34:14.77 -0.74 31.99 78.27 Automatic
IU KIEV P 21:34:19.7 -1.04 323.5 79.1 Automatic
II PFO P 21:34:34.29 -0.5 55.51 81.84 Automatic
II RAYN P 21:34:40.99 -1.08 293.45 83.26 Automatic