This event was automatically detected and need to be confirmed by one of our analysts.
Type Event
Magnitude 5 mb
Local datetime 2021/12/21 01:05
Universal datetime 2021/12/20 16:05
Latitude 42.36 ° ± 4 km
Longitude 142.81 ° ± 4 km
Depth 52 km (from location) ± 4 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
Sapporo  144 1.883027e+06
Asahikawa  159 356612
Akita  373 320069
Aomori  244 298394
Morioka  325 295172
Hakodate  182 275730
Hachinohe  231 239046
Kushiro  145 183612
Hirosaki  279 174972
Tomakomai  108 174806
Obihiro  70 173890
Otaru  176 143792
Kitami  188 113137
Sakata  457 100446
Muroran  151 96197

Past seismicity

  This map shows the most significant earthquake around this event.

Event details

Parameters

Evaluation status
RMS 1.42
Azimuthal gap 85.16 °
Number of stations used 28
Number of phases used 28

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 16:05:37.2 -2.39 143.05 0.43 Automatic
IU YSS P 16:06:36.45 2.26 359.59 4.6 Automatic
IU MAJO P 16:07:04.67 0.1 212.94 6.81 Automatic
IU INCN P 16:08:37.67 3.85 253.88 13.31 Automatic
IU YAK P 16:10:06.12 -2.08 342.84 21.16 Automatic
IU TATO P 16:10:43.77 0.35 232.04 24.7 Automatic
IU ULN P 16:10:50.82 -1.25 294.8 25.58 Automatic
IU TIXI P 16:11:29.92 -1.89 351.28 30.07 Automatic
II KDAK P 16:13:17.62 0.54 45.63 42.36 Automatic
IU MAKZ P 16:13:16.34 -1.65 297.71 42.46 Automatic
II KURK P 16:13:24.87 -1.62 304.12 43.51 Automatic
IU CHTO P 16:13:28.87 0.69 251.34 43.81 Automatic
IU COLA P 16:13:29.82 0.47 34.97 43.88 Automatic
II AAK P 16:14:07.92 -1.05 294.91 48.91 Automatic
II ALE P 16:14:49.92 -0.72 3.91 54.5 Automatic
II WRAB P 16:15:44.4 -1.06 188.94 62.78 Automatic
II KIV P 16:16:23.67 1.13 310.17 68.03 Automatic
II FFC P 16:16:25.9 0.22 34.19 68.39 Automatic
IU KIEV P 16:16:36.87 -0.92 321.99 70.48 Automatic
II UOSS P 16:16:40.37 -0.83 286.93 71.1 Automatic
IU RSSD P 16:17:04.39 0.35 43.13 74.9 Automatic
II PFO P 16:17:05.89 1.25 57.89 75.03 Automatic
IU ANTO P 16:17:13.44 1.74 312.06 76.24 Automatic
IU TUC P 16:17:30.49 1.28 55.57 79.41 Automatic
II RAYN P 16:17:28.74 -0.57 292.33 79.47 Automatic
IU ANMO P 16:17:34.72 1.61 51.09 80.12 Automatic
II BFO P 16:17:37.47 0.35 331.28 80.84 Automatic
IU CCM P 16:18:02.19 -0.14 39.73 85.77 Automatic