This event was automatically detected and need to be confirmed by one of our analysts.
Type Event
Magnitude 5.4 mb
Local datetime 2025/12/09 08:59
Universal datetime 2025/12/08 23:59
Latitude 40.88 ° ± 4 km
Longitude 142.74 ° ± 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
Sapporo  271 1.883027e+06
Sendai  323 1.037562e+06
Asahikawa  321 356612
Akita  260 320069
Aomori  172 298394
Morioka  188 295172
Hakodate  196 275730
Hachinohe  109 239046
Kushiro  270 183612
Hirosaki  195 174972
Tomakomai  221 174806
Obihiro  231 173890
Otaru  296 143792
Sakata  329 100446
Muroran  220 96197

Past seismicity

  This map shows the most significant earthquake around this event.

Event details

Parameters

Evaluation status
RMS 1.47
Azimuthal gap 131.47 °
Number of stations used 27
Number of phases used 27

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 23:59:26.22 0.82 15.11 1.18 Automatic
IU MAJO P 00:00:28.87 2.1 220.72 5.59 Automatic
IU YSS P 00:00:35.45 2.02 0.11 6.08 Automatic
IU MA2 P 00:03:32.7 2.78 12.32 19.36 Automatic
IU YAK P 00:04:01.7 -2.96 343.97 22.57 Automatic
IU ULN P 00:04:38.77 -0.12 297.55 26.19 Automatic
II TLY P 00:05:04.22 3 305.44 28.68 Automatic
IU BILL P 00:05:11.22 -1.71 17.46 30.04 Automatic
IU TIXI P 00:05:24.9 -1.94 351.69 31.53 Automatic
IU CHTO P 00:07:05.44 -0.26 252.76 43.31 Automatic
II KURK P 00:07:13.49 -1.01 305.37 44.32 Automatic
II AAK P 00:07:55.22 0.07 296.04 49.5 Automatic
II KAPI P 00:08:00.84 0.63 210.29 50.49 Automatic
II ALE P 00:08:42.37 -0.69 3.83 55.98 Automatic
II WRAB P 00:09:14.62 -2.39 188.99 61.31 Automatic
II OBN P 00:09:47.2 -0.6 322.83 65.4 Automatic
II KIV P 00:10:10.37 0.16 310.58 68.95 Automatic
IU GNI P 00:10:17.92 1.04 306.36 70.03 Automatic
II UOSS P 00:10:24.62 -0.89 287.37 71.49 Automatic
IU KIEV P 00:10:25.12 -1.51 322.27 71.62 Automatic
II PFO P 00:10:52.77 1.35 57.52 75.86 Automatic
IU RSSD P 00:10:52.34 -0.1 42.83 76.02 Automatic
IU ANTO P 00:10:59.49 0.39 312.28 77.2 Automatic
IU TUC P 00:11:17.34 1.34 55.31 80.29 Automatic
IU ANMO P 00:11:20.37 0.02 50.86 81.1 Automatic
II BFO P 00:11:25.47 -0.43 331.35 82.12 Automatic
IU CCM P 00:11:49.7 -1.1 39.63 86.94 Automatic