Earthquake with magnitude of Mwp 6.3 on date 18-04-2020 and time 08:25:38 (UTC) in region Japan [Sea]

A magnitude Mwp 6.3 earthquake occured in region: Japan [Sea], on

  • 18-04-2020 08:25:38 (UTC)
  • 18-04-2020 10:25:38 (UTC +02:00) Italian time
  • 18-04-2020 17:25:38 (UTC +09:00) local time in the region of the earthquake (Asia/Tokyo)

and geographic coordinates (lat, lon) 27, 140.21 at 472 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 mb 5.7
Mwp 6.3

Mwpd 6.4
2020-04-18
08:25:38
27 140.21 472 2020-04-18
08:41:11
Sala Sismica INGV-Roma 78349351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-18 08:25:38
Latitude 27.00
Longitude 140.21
Depth (km) 472 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 78349351

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 7801
Semi-minor axis of confidence ellipse (meter) 4340
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 284
Circular confidence region, given by single value of horizontal uncertainty (meter) 6985.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 46.1955
Number of associated phases, regardless of their use for origin computation 68
Number of defining phases 68
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.31778
Epicentral distance of station closest to the epicenter (degree) 1.76481
Epicentral distance of station farthest from the epicenter (degree) 48.26237
Number of stations at which the event was observed 56
Number of stations from which data was used for origin computation 56
Magnitudes information

Mwpd:6.5

Field Value
Value 6.5
Uncertainty 0.1
Num. used stations 17
Type of magnitude Mwpd
Reference to an origin 78349351
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-04-18 08:41:11

Mwp:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 34
Type of magnitude Mwp
Reference to an origin 78349351
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-04-18 08:41:11

mb:5.7

Field Value
Value 5.7
Uncertainty 0.1
Num. used stations 37
Type of magnitude mb
Reference to an origin 78349351
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2020-04-18 08:41:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.GSI.BHZ. 2020-04-18T08:33:34.52 10.0 negative automatic P 245 48.2624 0.104951 0
GE.MNAI.BHZ. 2020-04-18T08:33:29.57 10.0 positive automatic P 235 47.7261 -0.82347 0.591558
IU.JOHN.BHZ.00 2020-04-18T08:33:30.60 10.0 positive automatic P 92 47.4542 2.27271 0.610373
AT.AKUT.BHZ. 2020-04-18T08:33:29.74 10.0 positive automatic P 40 47.5735 0.517477 0.620108
IU.CTAO.BHZ.00 2020-04-18T08:33:27.52 10.0 negative automatic P 172 47.453 -0.854315 0
IU.PMG.BHZ.00 2020-04-18T08:33:25.57 10.0 positive automatic pP 169 37.0263 -5.33795 0
IU.TIXI.BHZ.00 2020-04-18T08:33:09.42 10.0 positive automatic P 355 45.0737 -0.757428 0.637388
GE.SMRI.BHZ. 2020-04-18T08:33:06.57 10.0 positive automatic P 225 44.6111 -0.056972 0.630884
IU.BILL.BHZ.00 2020-04-18T08:33:01.07 10.0 negative automatic P 14 43.9697 -0.603075 0.65697
MY.KUM.BHZ. 2020-04-18T08:32:58.72 10.0 negative automatic P 247 43.4559 1.09946 0.682043
GE.JAGI.BHZ. 2020-04-18T08:32:56.27 10.0 positive automatic P 219 43.5432 -2.05094 0.649508
MY.KOM.BHZ. 2020-04-18T08:32:55.22 10.0 negative automatic P 240 42.9966 1.20192 0.674473
IN.SHL.HHZ. 2020-04-18T08:32:55.51 10.0 negative automatic P 279 43.1033 0.666701 0.701924
IU.HNR.BHZ.00 2020-04-18T08:32:41.32 10.0 negative automatic P 150 41.165 1.79088 0.699905
MY.KKM.BHZ. 2020-04-18T08:32:39.37 10.0 positive automatic pP 232 30.9847 1.9721 0
AU.COEN.BHZ. 2020-04-18T08:32:38.25 10.0 positive automatic P 176 41.0605 -0.486832 0
IU.TARA.BHZ.00 2020-04-18T08:32:36.60 10.0 positive automatic P 124 40.5209 2.22555 0.68804
IU.ADK.BHZ.00 2020-04-18T08:32:35.95 10.0 positive automatic P 40 40.6461 0.554629 0.734789
GE.SOEI.BHZ. 2020-04-18T08:32:27.82 10.0 positive automatic P 205 39.8767 -1.54299 0.732143
GE.MMRI.BHZ. 2020-04-18T08:32:26.77 10.0 positive automatic P 209 39.6676 -0.751991 0.703378
IU.CHTO.BHZ.00 2020-04-18T08:32:20.57 10.0 negative automatic P 267 38.7009 0.839719 0
II.KAPI.BHZ.00 2020-04-18T08:32:10.80 10.0 positive automatic P 215 37.6324 -0.177255 0.812901
IU.PMG.BHZ.00 2020-04-18T08:32:05.47 10.0 positive automatic P 169 37.0263 -0.476219 0.704932
II.TLY.BHZ.00 2020-04-18T08:32:05.12 10.0 negative automatic P 322 36.8719 0.364426 0.808731
MY.SBM.BHZ. 2020-04-18T08:32:00.52 10.0 positive automatic P 232 36.3436 0.192529 0.78212
AT.SMY.BHZ. 2020-04-18T08:31:59.16 10.0 positive automatic P 35 35.9837 1.85897 0.826647
GE.BKB.BHZ. 2020-04-18T08:31:58.62 10.0 positive automatic P 222 35.9626 1.4851 0.827076
IU.YAK.BHZ.00 2020-04-18T08:31:53.72 10.0 negative automatic P 352 35.7217 -1.41562 0.812621
AU.RABL.BHZ.00 2020-04-18T08:31:35.98 10.0 positive automatic P 158 33.2649 1.47567 0.882709
IU.MA2.BHZ.00 2020-04-18T08:31:34.92 10.0 positive automatic P 10 33.3757 -0.531092 0.859913
IU.ULN.BHZ.00 2020-04-18T08:31:33.87 10.0 negative automatic P 318 33.1588 0.0417461 0.884933
GE.BNDI.BHZ. 2020-04-18T08:31:31.82 10.0 positive automatic P 199 33.0598 -0.891696 0.887012
GE.LUWI.BHZ. 2020-04-18T08:31:27.47 10.0 positive automatic P 214 32.6834 -2.03168 0.874127
GE.SANI.BHZ. 2020-04-18T08:31:23.02 10.0 positive automatic P 207 32.1228 -1.70315 0.885719
MY.KKM.BHZ. 2020-04-18T08:31:16.02 10.0 positive automatic P 232 30.9847 0.933813 0.931144
GE.FAKI.BHZ. 2020-04-18T08:31:11.57 10.0 positive automatic P 196 30.8911 -2.59116 0.955921
AU.MANU.BHZ.00 2020-04-18T08:31:04.98 10.0 positive automatic P 166 29.8547 -0.218693 0.465116
IU.PET.BHZ.00 2020-04-18T08:31:01.27 10.0 negative automatic P 23 29.4104 -0.055738 0.888889
GE.TNTI.BHZ. 2020-04-18T08:30:57.17 10.0 positive automatic P 207 28.9844 -0.427943 0.952381
IU.DAV.BHZ.00 2020-04-18T08:30:16.05 10.0 positive automatic P 218 24.2948 -0.224179 0.987654
IU.YSS.BHZ.00 2020-04-18T08:29:37.15 10.0 negative automatic P 5 20.0555 -0.927094 0.888889
IU.TATO.BHZ.00 2020-04-18T08:29:07.07 10.0 negative automatic P 267 16.9222 -1.24837 0.888889
JP.YOJ.BHZ. 2020-04-18T08:28:55.15 10.0 negative automatic P 265 15.6813 -0.15753 0.930233
IU.INCN.BHZ.00 2020-04-18T08:28:51.27 10.0 negative automatic P 316 15.5131 -2.26944 0.97561
IU.GUMO.BHZ.00 2020-04-18T08:28:39.57 10.0 negative automatic P 161 14.1041 0.923427 0.930233
JP.JTM.BHZ. 2020-04-18T08:28:34.85 10.0 negative automatic P 3 13.8036 -0.586068 0.869565
JP.JTU.BHZ. 2020-04-18T08:28:15.85 10.0 negative automatic P 312 11.9391 0.374993 0.930233
JP.JOW.BHZ. 2020-04-18T08:28:03.75 10.0 positive automatic P 272 10.6368 2.25116 0.97561
JP.JNU.BHZ. 2020-04-18T08:27:57.60 10.0 negative automatic P 309 10.1237 1.56852 0.952381
JP.JSU.BHZ. 2020-04-18T08:27:52.55 10.0 positive automatic P 300 9.6218 1.93387 0.952381
IU.MAJO.BHZ.00 2020-04-18T08:27:49.32 10.0 negative automatic P 350 9.6915 -2.04668 0.909091
JP.JGF.BHZ. 2020-04-18T08:27:42.50 10.0 negative automatic P 345 8.9372 -0.809247 0.851064
JP.JMN.BHZ. 2020-04-18T08:27:42.05 10.0 negative automatic P 322 8.6604 1.70182 0.952381
G.INU.BHZ.00 2020-04-18T08:27:41.61 10.0 negative automatic P 343 8.7758 0.102692 0.97561
JP.JMZ.BHZ. 2020-04-18T08:27:35.55 10.0 positive automatic P 264 8.1287 0.939859 0.952381
JP.JSG.BHZ. 2020-04-18T08:27:31.95 10.0 positive automatic P 348 7.8672 0.0959464 0.952381
JP.JHJ2.BHZ. 2020-04-18T08:27:12.70 10.0 positive automatic P 357 6.1209 -1.12351 0.952381
JP.JCJ.BHZ. 2020-04-18T08:26:37.70 10.0 negative automatic P 87 1.7648 -1.15531 0.952381
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download