This event was automatically detected and need to be confirmed by one of our analysts.
Type Event
Magnitude 6.9 Mwp
Local datetime 2026/04/20 16:52
Universal datetime 2026/04/20 07:52
Latitude 40.19 ° ± 3 km
Longitude 142.77 ° ± 3 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  260 1.037562e+06
Akita  235 320069
Aomori  188 298394
Morioka  149 295172
Fukushima  337 294237
Hakodate  246 275730
Yamagata  300 254538
Hachinohe  110 239046
Kushiro  337 183612
Hirosaki  199 174972
Tomakomai  291 174806
Obihiro  306 173890
Sakata  288 100446
Tsuruoka  302 99820
Muroran  282 96197

Past seismicity

  This map shows the most significant earthquake around this event.

Event details

Parameters

Evaluation status
RMS 1.75
Azimuthal gap 34.65 °
Number of stations used 49
Number of phases used 49

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 07:53:31.82 1.27 9.04 1.84 Automatic
IU MAJO P 07:54:14.24 -1.33 225.87 5.11 Automatic
IU TATO P 07:58:06.92 -1.05 235.89 23.4 Automatic
IU ULN P 07:58:38.22 0.86 298.76 26.53 Automatic
IU MIDW P 07:59:50.72 1.02 97.6 34.74 Automatic
IU CHTO P 08:00:58.22 -1.48 253.48 43.13 Automatic
IU MAKZ P 08:01:03.2 -0.14 299.74 43.48 Automatic
II KURK P 08:01:12.84 -0.38 305.94 44.73 Automatic
IU COLA P 08:01:20.52 -0.19 33.74 45.69 Automatic
IU TARA P 08:01:34.77 1.54 137.07 47.5 Automatic
IU PMG P 08:01:52.84 3.18 174.32 49.77 Automatic
II AAK P 08:01:53.7 0.07 296.56 49.82 Automatic
II KAPI P 08:01:48.92 -2.35 210.6 49.91 Automatic
IU KIP P 08:02:15.29 -2.32 92.04 53.16 Automatic
IU POHA P 08:02:38.97 0.63 92.06 56.01 Automatic
II ALE P 08:02:42.82 -0.5 3.8 56.66 Automatic
IU KBS P 08:02:51.12 1.81 350.07 57.5 Automatic
IU CTAO P 08:03:07.59 1.57 176.23 60.37 Automatic
IU KEV P 08:03:11.22 0.13 339.05 60.62 Automatic
II PALK P 08:03:32.34 -1.15 256.95 64.11 Automatic
IU MBWA P 08:03:33.4 -4.14 203.74 65 Automatic
IU COR P 08:03:44.4 0.8 51.38 65.43 Automatic
IU XMAS P 08:03:46.77 1.4 109 65.97 Automatic
II MSVF P 08:03:45.34 -2.56 143.17 66.6 Automatic
II COCO P 08:03:56.37 2.36 229.49 67.48 Automatic
IU AFI P 08:04:04.84 3.9 132.01 68.59 Automatic
II FFC P 08:04:10.97 -2.45 33.72 70.2 Automatic
IU GNI P 08:04:16.42 1.54 306.56 70.45 Automatic
II UOSS P 08:04:20.97 -1.31 287.6 71.72 Automatic
IU KIEV P 08:04:24.12 -1.24 322.41 72.17 Automatic
IU SFJD P 08:04:25.37 -0.89 5.45 72.32 Automatic
IU KONO P 08:04:30.84 0.7 337.33 72.97 Automatic
II BORG P 08:04:40.67 2.6 353.02 74.32 Automatic
II PFO P 08:04:46.97 -1.88 57.39 76.21 Automatic
IU RSSD P 08:04:49.9 -1.55 42.73 76.51 Automatic
IU NWAO P 08:04:48.39 -0.52 201.81 76.84 Automatic
IU ANTO P 08:04:57.52 0.34 312.41 77.68 Automatic
II DGAR P 08:05:10.62 1.76 251.41 80.1 Automatic
II ESK P 08:05:11.52 0.48 341.15 80.18 Automatic
IU TUC P 08:05:11.49 -1.95 55.23 80.67 Automatic
IU ANMO P 08:05:16.44 -1.54 50.79 81.51 Automatic
II BFO P 08:05:22.57 -1.92 331.41 82.73 Automatic
II TAU P 08:05:23.77 0.75 176.64 83.21 Automatic
IU WCI P 08:05:57.19 -1.22 36.4 89.65 Automatic
IU WVT P 08:06:01.54 -1.48 38.62 90.64 Automatic
IU HRV P 08:06:08.94 1.08 24.57 91.66 Automatic
IU PAB P 08:06:22.52 0.19 335.16 94.8 Automatic
IU KMBO P 08:06:56.84 1.42 279.29 102.53 Automatic
GE KIBK P 08:07:00.47 4.16 277.8 102.74 Automatic