This event was automatically detected and need to be confirmed by one of our analysts.
Type Event
Magnitude 5 mb
Local datetime 2023/08/01 06:12
Universal datetime 2023/07/31 21:12
Latitude 39.77 ° ± 8 km
Longitude 143.11 ° ± 10 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
Sendai  244 1.037562e+06
Kōriyama  354 340560
Akita  259 320069
Aomori  235 298394
Morioka  170 295172
Fukushima  322 294237
Hakodate  301 275730
Yamagata  293 254538
Hachinohe  157 239046
Hirosaki  242 174972
Tomakomai  346 174806
Obihiro  351 173890
Sakata  296 100446
Tsuruoka  307 99820
Muroran  338 96197

Past seismicity

  This map shows the most significant earthquake around this event.

Event details

Parameters

Evaluation status
RMS 0.86
Azimuthal gap 187.94 °
Number of stations used 12
Number of phases used 12

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 21:13:26.92 0.38 0.89 2.25 Automatic
IU MAJO P 21:14:04.67 -0.18 231.65 5.03 Automatic
IU YAK P 21:17:59.82 -1.64 344.28 23.71 Automatic
IU ULN P 21:18:32.17 0.49 299.46 26.97 Automatic
IU CHTO P 21:20:50.59 -0.59 254.21 43.26 Automatic
IU MAKZ P 21:20:57.4 -0.04 300.21 43.92 Automatic
II KDAK P 21:20:58.29 0.3 43.72 44.04 Automatic
II KURK P 21:21:06.82 -0.47 306.35 45.19 Automatic
II AAK P 21:21:48.32 1.69 297 50.25 Automatic
II ALE P 21:22:36.72 0.13 3.83 57.06 Automatic
II KIV P 21:24:02.82 1.02 311.06 69.89 Automatic
IU KIEV P 21:24:17.62 -1.09 322.65 72.67 Automatic