Earthquake with magnitude of Mwp 6.1 on date 13-05-2021 and time 23:58:14 (UTC) in region Near east coast of eastern Honshu, Japan [Sea: Japan]

A magnitude Mwp 6.1 earthquake occured in region: Near east coast of eastern Honshu, Japan [Sea: Japan], on

  • 13-05-2021 23:58:14 (UTC)
  • 14-05-2021 01:58:14 (UTC +02:00) Italian time
  • 14-05-2021 08:58:14 (UTC +09:00) local time in the region of the earthquake (Asia/Tokyo)

and geographic coordinates (lat, lon) 37.607, 141.957 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

These three maps show the results of the analysis using the software ShakeMap designed to provide the level of ground shaking experienced in a region using the data recorded by seismometers and strong motion instruments and seismological information regarding the attenuation of the wavefield with distance and the site characteristics. The Shakemaps are determined for research purposes to provide fast estimates of the level of ground shaking produced by the earthquake. The maps are calculated automatically and adjourned progressively as more data become available. See http://shakemap.rm.ingv.it/ for additional information.

The red star indicates the epicenter. The red triangles show the stations of the INGV Italian National Seismic Network and the blue triangles those of the Nationa Accelerometric Network of the Dipartimento della Protezione Civile.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of the istrumentally derived intensities. To this purpose, it is used a conversion relation between ground acceleration and velocity, and the Mercalli Modificata (MMI - Modified Mercalli Intensity) scale. In general, the Mercalli intensity scale relies on the effects that the ground shaking produces as reported by an observer.
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows This map shows the distribution of peak ground acceleration expressed as per cent of the acceleration of gravity (i.e., g = 9.81 m/s²).
Peak velocity Shakemap

Peak velocity Shakemap

This map shows the distribution of peak ground velocities expressed in cm/s.
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Reviewed
Rev100
mb 5.5
Mwp 6.1

Mwpd 6.2
2021-05-13
23:58:14
37.6066 141.957 35 2021-05-14
00:27:40
Sala Sismica INGV-Roma 90067701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-13 23:58:14
Latitude 37.6066
Longitude 141.9570
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 90067701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 7433
Semi-minor axis of confidence ellipse (meter) 4541
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 125
Circular confidence region, given by single value of horizontal uncertainty (meter) 6957.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 128.746
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 57
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.50245
Epicentral distance of station closest to the epicenter (degree) 2.95377
Epicentral distance of station farthest from the epicenter (degree) 54.5512
Number of stations at which the event was observed 47
Number of stations from which data was used for origin computation 47
Magnitudes information

Mwpd:6.3

Field Value
Value 6.3
Uncertainty 0.1
Num. used stations 13
Type of magnitude Mwpd
Reference to an origin 90067701
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-05-14 00:27:40

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.2
Num. used stations 26
Type of magnitude Mwp
Reference to an origin 90067701
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-05-14 00:27:40

mb:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 23
Type of magnitude mb
Reference to an origin 90067701
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-05-14 00:27:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GE.GSI.BHZ. 2021-05-14T00:07:37.52 10.0 positive automatic P 239 54.5512 -0.787013 0
GE.SMRI.BHZ. 2021-05-14T00:07:29.62 10.0 positive automatic P 220 53.4586 -0.728377 0
GE.JAGI.BHZ. 2021-05-14T00:07:22.92 10.0 positive automatic P 215 52.8965 -3.29076 0
GE.LHMI.BHZ. 2021-05-14T00:07:21.62 10.0 positive automatic P 243 52.1638 0.865231 0
IU.MA2.BHZ.00 2021-05-14T00:07:17.57 10.0 negative automatic S 12 22.6824 -0.276984 0
AU.MTN.BHZ.00 2021-05-14T00:07:14.63 10.0 negative automatic P 194 51.4617 -0.920097 0
AU.KDU.BHZ.00 2021-05-14T00:07:11.35 10.0 positive automatic P 192 51.0736 -1.27144 0.548923
GE.SOEI.BHZ. 2021-05-14T00:07:04.37 10.0 positive automatic P 203 50.1725 -1.62465 0.563917
MY.KUM.BHZ. 2021-05-14T00:07:00.77 10.0 positive automatic P 240 49.5445 -0.287645 0.588497
IU.COLA.BHZ.00 2021-05-14T00:06:52.00 10.0 positive automatic P 32 48.1973 2.24518 0.583595
II.KDAK.BHZ.00 2021-05-14T00:06:49.92 10.0 positive automatic sP 42 46.2334 0.745985 0
IO.EVN.BHZ. 2021-05-14T00:06:40.10 10.0 positive automatic P 275 46.6826 0.296679 0
II.KDAK.BHZ.00 2021-05-14T00:06:37.62 10.0 negative automatic P 42 46.2334 2.17945 0
II.KURK.BHZ.00 2021-05-14T00:06:31.52 10.0 positive automatic P 308 45.7769 -0.32991 0.655563
GE.BKB.BHZ. 2021-05-14T00:06:27.52 10.0 positive automatic P 217 45.1066 0.987916 0.636808
MY.SBM.BHZ. 2021-05-14T00:06:21.02 10.0 positive automatic P 225 44.4906 -0.626684 0
IU.MAKZ.BHZ.00 2021-05-14T00:06:18.90 10.0 negative automatic P 302 44.2576 -0.955033 0.675392
IN.SHL.HHZ. 2021-05-14T00:06:15.15 10.0 positive automatic P 269 43.7981 -0.90971 0.685547
GE.SANI.BHZ. 2021-05-14T00:06:02.27 10.0 positive automatic P 204 42.3231 -1.86726 0.641934
GE.LUWI.BHZ. 2021-05-14T00:06:02.57 10.0 positive automatic P 209 42.5214 -3.17538 0
IU.CHTO.BHZ.00 2021-05-14T00:05:59.42 10.0 positive automatic P 256 41.8282 -0.748566 0.687795
GE.FAKI.BHZ. 2021-05-14T00:05:56.67 10.0 positive automatic P 195 41.5131 -0.870269 0.701599
AK.TNA.BHZ. 2021-05-14T00:05:47.53 10.0 positive automatic P 30 40.0261 2.2597 0.719289
RM.DLV.BHZ. 2021-05-14T00:05:40.47 10.0 positive automatic P 238 39.3869 0.323945 0.777579
MY.KKM.BHZ. 2021-05-14T00:05:39.42 10.0 positive automatic P 223 39.2939 0.113914 0.679929
GE.TNTI.BHZ. 2021-05-14T00:05:37.72 10.0 positive automatic P 203 39.2093 -0.743886 0.72786
RM.SLV.BHZ. 2021-05-14T00:05:15.62 10.0 positive automatic P 254 36.5753 -0.720659 0.743849
IU.ADK.BHZ.00 2021-05-14T00:04:39.72 10.0 positive automatic P 50 32.0956 2.24465 0.886283
II.TLY.BHZ.00 2021-05-14T00:04:19.57 10.0 positive automatic P 310 30.2078 -1.35434 0.865512
IU.ULN.BHZ.00 2021-05-14T00:03:53.62 10.0 positive automatic P 303 27.3246 -1.84757 0.930233
IU.YAK.BHZ.00 2021-05-14T00:03:37.87 10.0 positive automatic P 347 25.575 -1.55196 0.930233
IU.PET.BHZ.00 2021-05-14T00:02:37.12 10.0 positive automatic P 32 19.2758 1.76494 0.888889
JP.JOW.BHZ. 2021-05-14T00:01:50.90 10.0 positive automatic P 231 15.7783 -2.37673 0.851064
IU.INCN.BHZ.00 2021-05-14T00:01:06.22 10.0 negative automatic P 274 12.1436 1.93832 0.8
JP.JSU.BHZ. 2021-05-14T00:00:53.05 10.0 positive automatic P 241 11.2526 0.889353 0.869565
JP.JTU.BHZ. 2021-05-14T00:00:44.95 10.0 negative automatic P 257 10.5991 1.78858 0.952381
JP.JCJ.BHZ. 2021-05-14T00:00:39.80 10.0 positive automatic P 179 10.5122 -2.18415 0.888889
IU.YSS.BHZ.00 2021-05-14T00:00:24.95 10.0 positive automatic P 3 9.3704 -1.39493 0.952381
JP.JMN.BHZ. 2021-05-14T00:00:03.75 10.0 positive automatic P 242 7.6181 1.35822 0.816327
JP.JKA.BHZ. 2021-05-13T23:59:46.25 10.0 positive automatic S 8 3.5463 -0.416521 0
JP.JHJ2.BHZ. 2021-05-13T23:59:25.25 10.0 positive automatic P 202 4.8187 1.37609 0.952381
G.INU.BHZ.00 2021-05-13T23:59:21.81 10.0 negative automatic P 242 4.5586 1.50263 0.930233
II.ERM.BHZ.00 2021-05-13T23:59:18.82 10.0 positive automatic P 11 4.5035 -0.715517 0.930233
JP.JSG.BHZ. 2021-05-13T23:59:17.35 10.0 negative automatic P 227 4.2258 1.61812 0.615385
JP.JGF.BHZ. 2021-05-13T23:59:17.00 10.0 negative automatic P 243 4.2015 1.51889 0.909091
JP.JTM.BHZ. 2021-05-13T23:59:02.35 10.0 negative automatic P 348 3.2568 -0.0685989 0.97561
IU.MAJO.BHZ.00 2021-05-13T23:59:02.17 10.0 negative automatic P 252 3.1759 0.817129 0.930233
JP.JSD.BHZ. 2021-05-13T23:58:56.95 10.0 negative automatic P 280 2.9538 -1.30394 0.930233
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