This event was automatically detected and need to be confirmed by one of our analysts.
Type Event
Magnitude 5 mb
Local datetime 2023/12/21 20:29
Universal datetime 2023/12/21 11:29
Latitude 35.25 ° ± 8 km
Longitude 141.12 ° ± 6 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  134 8.336599e+06
Yokohama  140 3.574443e+06
Kawasaki  133 1.306785e+06
Shizuoka  251 701561
Hachiōji  169 579399
Utsunomiya  184 449865
Nagano  309 360176
Iwaki  202 357309
Kōriyama  249 340560
Kawagoe  166 337931
Fukushima  283 294237
Maebashi  225 282711
Mito  138 246538
Matsumoto  306 210667
Kōfu  235 190000

Past seismicity

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

Event details

Parameters

Evaluation status
RMS 1.36
Azimuthal gap 132.05 °
Number of stations used 16
Number of phases used 16

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 11:30:35.77 0.99 299.67 2.7 Automatic
IU YAK P 11:35:39.27 -0.65 348.47 27.74 Automatic
IU ULN P 11:35:43.72 -0.27 307.17 28.14 Automatic
IU BILL P 11:36:49.79 -1.06 15.86 35.8 Automatic
IU TIXI P 11:36:59.7 -1.57 353.61 36.95 Automatic
IU MAKZ P 11:38:06.39 -1.02 303.77 44.98 Automatic
II KURK P 11:38:19.34 -1.94 309.53 46.73 Automatic
II AAK P 11:38:57.62 3.37 299.68 51.01 Automatic
II WRAB P 11:39:22.89 -1.67 187.71 55.55 Automatic
II KIV P 11:41:15.82 1.19 311.4 71.68 Automatic
II FFC P 11:41:34.74 0.12 32.21 75.06 Automatic
IU KIEV P 11:41:35.2 -1 322.59 75.31 Automatic
II PFO P 11:42:03.9 0.76 55.67 80.03 Automatic
IU TUC P 11:42:27.19 0.98 53.8 84.6 Automatic
IU ANMO P 11:42:32.37 0.7 49.45 85.69 Automatic
IU CCM P 11:43:03.29 1.09 38.61 92.12 Automatic