This event was automatically detected and need to be confirmed by one of our analysts.
Type Event
Magnitude 5.2 mb
Local datetime 2017/10/22 00:50
Universal datetime 2017/10/21 15:50
Latitude 36.24 ° ± 5 km
Longitude 142.17 ° ± 7 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  226 8.336599e+06
Yokohama  249 3.574443e+06
Kawasaki  236 1.306785e+06
Sendai  249 1.037562e+06
Hachiōji  264 579399
Utsunomiya  209 449865
Iwaki  145 357309
Kōriyama  205 340560
Kawagoe  244 337931
Fukushima  224 294237
Maebashi  278 282711
Yamagata  278 254538
Mito  152 246538
Nagaoka  324 195318
Kōfu  330 190000

Past seismicity

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

Event details

Parameters

Evaluation status
RMS 1.48
Azimuthal gap 123.05 °
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 15:51:48.2 0.32 276.59 3.2 Automatic
II ERM P 15:52:21.37 -2.11 7.28 5.82 Automatic
IU YSS P 15:53:30.40 -0.26 2.18 10.72 Automatic
IU YAK P 15:56:38.27 -0.45 347.07 26.94 Automatic
IU ULN P 15:56:51.37 0.6 305.34 28.23 Automatic
IU TIXI P 15:57:59.62 0.65 352.93 36.06 Automatic
IU MAKZ P 15:59:17.9 2.48 303.08 45.13 Automatic
IU PMG P 15:59:19.17 1.29 173.13 45.89 Automatic
II KURK P 15:59:26.52 -0.9 308.9 46.76 Automatic
II AAK P 16:00:01.87 -0.17 299.25 51.25 Automatic
II BRVK P 16:00:03.77 0.34 313.08 51.45 Automatic
II NIL P 16:00:31.37 -0.44 289.15 55.3 Automatic
II WRAB P 16:00:35.22 -3.2 188.79 56.66 Automatic
II KIV P 16:02:20.97 0.57 311.58 71.65 Automatic
II UOSS P 16:02:23.72 -1.47 288.49 72.49 Automatic
IU ANMO P 16:03:33.87 2.75 50.08 84.39 Automatic