Earthquake with magnitude of Mwp 6.4 on date 29-11-2021 and time 13:40:46 (Italy) in region Southeast of Honshu, Japan [Sea: Japan]

A magnitude Mwp 6.4 earthquake occured in region: Southeast of Honshu, Japan [Sea: Japan], on

  • 29-11-2021 12:40:46 (UTC)
  • 29-11-2021 13:40:46 (UTC +01:00) Italian time
  • 29-11-2021 21:40:46 (UTC +09:00) local time in the region of the earthquake (Asia/Tokyo)

and geographic coordinates (lat, lon) 31.2570, 142.7620 at 35 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

Municipalities within 20 km from the epicenter

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

No Italian municipalities within 100 km from the epicenter with at least 50000 inhabitants.

Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
mb 5.8
Mwp 6.4
2021-11-29
12:40:46
31.2574 142.762 35 2021-11-29
12:55:36
Sala Sismica INGV-Roma 97940281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-29 12:40:46
Latitude 31.2574
Longitude 142.7620
Depth (km) 35 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 97940281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 5738
Semi-minor axis of confidence ellipse (meter) 4096
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 103
Circular confidence region, given by single value of horizontal uncertainty (meter) 5414.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171.709
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.14092
Epicentral distance of station closest to the epicenter (degree) 3.11068
Epicentral distance of station farthest from the epicenter (degree) 19.74023
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

Mwp:6.4

Field Value
Value 6.4
Uncertainty 0.1
Num. used stations 15
Type of magnitude Mwp
Reference to an origin 97940281
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-11-29 12:55:36

mb:5.8

Field Value
Value 5.8
Uncertainty 0.1
Num. used stations 14
Type of magnitude mb
Reference to an origin 97940281
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-11-29 12:55:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.TATO.BHZ.00 2021-11-29T12:45:11.42 10.0 negative automatic P 257 19.7402 -1.19845 0.869565
JP.YOJ.BHZ. 2021-11-29T12:44:59.65 10.0 negative automatic P 254 18.6990 -1.55091 0.930233
IU.GUMO.BHZ.00 2021-11-29T12:44:51.32 10.0 positive automatic P 173 17.7730 0.793855 0.987654
IU.YSS.BHZ.00 2021-11-29T12:44:24.60 10.0 negative automatic P 360 15.7006 0.156005 0.952381
IU.INCN.BHZ.00 2021-11-29T12:44:12.37 10.0 negative automatic P 299 14.6739 1.40361 0.615385
JP.JOW.BHZ. 2021-11-29T12:43:52.10 10.0 positive automatic P 254 13.4030 -1.5878 0.43956
JP.JTU.BHZ. 2021-11-29T12:43:29.75 10.0 positive automatic P 290 11.6790 -0.366975 0.43956
JP.JMZ.BHZ. 2021-11-29T12:43:28.75 10.0 positive automatic P 245 11.4927 1.18786 0.952381
II.ERM.BHZ.00 2021-11-29T12:43:16.57 10.0 positive automatic P 2 10.7617 -0.995658 0.952381
JP.JSU.BHZ. 2021-11-29T12:43:14.80 10.0 positive automatic P 275 10.5058 0.678755 0.952381
JP.JTM.BHZ. 2021-11-29T12:43:02.05 10.0 positive automatic P 352 9.6294 -0.0223887 0.888889
JP.JMN.BHZ. 2021-11-29T12:42:37.85 10.0 positive automatic P 291 7.8890 -0.438571 0.888889
IU.MAJO.BHZ.00 2021-11-29T12:42:19.62 10.0 negative automatic P 326 6.5000 0.416385 0.97561
G.INU.BHZ.00 2021-11-29T12:42:17.26 10.0 positive automatic P 312 6.2991 0.866896 0.930233
JP.JGF.BHZ. 2021-11-29T12:42:16.95 10.0 positive automatic P 315 6.2636 0.964545 0.952381
JP.JSG.BHZ. 2021-11-29T12:42:01.20 10.0 positive automatic P 313 5.1424 0.692861 0.930233
JP.JHJ2.BHZ. 2021-11-29T12:41:30.85 10.0 negative automatic P 307 3.1107 -1.73023 0.952381
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download