Earthquake with magnitude of Mwp 6.1 on date 28-04-2021 and time 04:21:25 (Italy) in region Northeastern India [Land: India]

A magnitude Mwp 6.1 earthquake occured in region: Northeastern India [Land: India], on

  • 28-04-2021 02:21:25 (UTC)
  • 28-04-2021 04:21:25 (UTC +02:00) Italian time
  • 28-04-2021 08:21:25 (UTC +06:00) local time in the region of the earthquake (Asia/Thimphu)

and geographic coordinates (lat, lon) 26.747, 92.333 at 16 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 updated as more data become available. See http://shakemap.ingv.it for additional information. The black star indicates the epicenter. The triangles show the accelerometric and velocimetric stations used in the calculation, colored according to the recorded shaking.

Intensity Shakemap

Intensity Shakemap

This map shows the distribution of instrumental intensities. The intensity is derived through an empirical law that correlates the recorded values of actual ground shaking, e.g., acceleration and velocity, with the macroseismic intensity for Italian earthquakes, as reported in the Italian Macroseismic Database (DBMI15, https://doi.org/10.13127/cpti/cpti15.3).
Peak ground acceleration Shakemap

Peak ground acceleration Shakemap

This map shows the distribution of peak ground acceleration expressed as percent 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website http://www.hsit.it. The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
mb 5.6
Mwp 6.1

Mwpd 6.3
2021-04-28
02:21:25
26.7469 92.3331 16 2021-04-28
02:37:05
Sala Sismica INGV-Roma 89545031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-04-28 02:21:25
Latitude 26.7469
Longitude 92.3331
Depth (km) 16 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 89545031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 10814
Semi-minor axis of confidence ellipse (meter) 10244
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) 11851.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 42.3626
Number of associated phases, regardless of their use for origin computation 91
Number of defining phases 91
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.33566
Epicentral distance of station closest to the epicenter (degree) 5.05084
Epicentral distance of station farthest from the epicenter (degree) 63.69539
Number of stations at which the event was observed 77
Number of stations from which data was used for origin computation 77
Magnitudes information

Mwpd:6.3

Field Value
Value 6.3
Uncertainty 0.2
Num. used stations 31
Type of magnitude Mwpd
Reference to an origin 89545031
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-04-28 02:37:05

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 32
Type of magnitude Mwp
Reference to an origin 89545031
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-04-28 02:37:05

mb:5.6

Field Value
Value 5.6
Uncertainty 0.1
Num. used stations 47
Type of magnitude mb
Reference to an origin 89545031
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-04-28 02:37:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.CEL.BHZ. 2021-04-28T02:31:54.42 10.0 positive automatic P 302 63.6954 0.15215 0.360612
IU.KONO.BHZ.00 2021-04-28T02:31:53.32 10.0 positive automatic P 326 63.5462 0.119604 0
GE.KBS.BHZ.00 2021-04-28T02:31:42.72 10.0 positive automatic P 348 61.9435 0.226713 0.336404
MN.BLY.BHZ. 2021-04-28T02:31:39.07 10.0 positive automatic P 309 61.352 0.532011 0.392685
HU.KOVH.BHZ. 2021-04-28T02:31:32.65 10.0 positive automatic P 310 60.4917 -0.0459023 0.386404
GE.MORC.BHZ. 2021-04-28T02:31:32.35 10.0 positive automatic P 314 60.3329 0.659744 0
AU.MANU.BHZ.00 2021-04-28T02:31:31.58 10.0 negative automatic P 109 60.3004 0.209984 0
MN.PDG.BHZ. 2021-04-28T02:31:31.07 10.0 positive automatic P 306 60.2908 -0.212334 0.39818
IU.BILL.BHZ.00 2021-04-28T02:31:25.47 10.0 positive automatic P 25 59.417 0.146835 0.430449
GE.PSZ.BHZ. 2021-04-28T02:31:23.30 10.0 positive automatic P 312 59.0267 0.569252 0
HT.AGG.HHZ. 2021-04-28T02:31:18.50 10.0 positive automatic P 301 58.6198 -1.34085 0.433874
MN.BZS.BHZ. 2021-04-28T02:31:16.82 10.0 positive automatic P 309 58.1162 0.555452 0.439221
HU.LTVH.BHZ. 2021-04-28T02:31:14.94 10.0 positive automatic P 311 57.7417 1.32302 0.434433
GE.SLIT.BHZ. 2021-04-28T02:31:08.40 10.0 positive automatic P 323 57.0888 -0.594237 0.443971
GE.KARP.BHZ. 2021-04-28T02:30:57.50 10.0 positive automatic P 296 55.4748 -0.0610875 0.447197
AU.FITZ.BHZ. 2021-04-28T02:30:53.43 10.0 positive automatic P 141 55.2785 -2.64621 0.476504
GE.VSU.BHZ. 2021-04-28T02:30:51.75 10.0 positive automatic P 324 54.7896 -0.787935 0.489778
HL.ARG.HHZ. 2021-04-28T02:30:50.98 10.0 positive automatic P 297 54.5938 -0.147378 0.118688
IU.MBWA.BHZ.00 2021-04-28T02:30:49.70 10.0 positive automatic P 148 54.7623 -2.66387 0.490204
AU.MTN.BHZ.00 2021-04-28T02:30:48.63 10.0 positive automatic P 131 54.6524 -2.92526 0.240241
GE.TIRR.BHZ. 2021-04-28T02:30:43.20 10.0 positive automatic P 307 53.455 0.39694 0.476778
AU.GIRL.BHZ.00 2021-04-28T02:30:43.80 10.0 negative automatic P 155 53.7392 -1.08849 0.494539
GE.PUL.BHZ. 2021-04-28T02:30:41.20 10.0 positive automatic P 326 53.1407 0.708411 0.49241
KO.ELL.BHZ. 2021-04-28T02:30:40.70 10.0 positive automatic P 297 53.0921 0.372824 0
IU.KIEV.BHZ.00 2021-04-28T02:30:38.02 10.0 positive automatic P 315 52.8343 -0.22453 0.520779
MY.KUM.BHZ. 2021-04-28T02:30:31.97 10.0 negative automatic S 158 22.8755 -2.36815 0
KO.MDUB.BHZ. 2021-04-28T02:30:29.22 10.0 positive automatic P 302 51.6775 -0.589473 0.555437
IU.MA2.BHZ.00 2021-04-28T02:30:26.67 10.0 positive automatic P 34 51.3313 -0.418862 0.52047
GE.CSS.BHZ. 2021-04-28T02:30:21.55 10.0 positive automatic P 295 50.5929 0.00764764 0.520321
IU.ANTO.BHZ.00 2021-04-28T02:30:20.37 10.0 positive automatic P 301 50.5074 -0.644933 0.579612
GE.EIL.BHZ. 2021-04-28T02:30:18.45 10.0 positive automatic P 288 50.1294 0.450192 0.552088
KO.BZK.BHZ. 2021-04-28T02:30:14.18 10.0 positive automatic P 304 49.4897 1.05187 0.565244
GE.SALP.BHZ. 2021-04-28T02:30:14.62 10.0 positive automatic P 291 49.4918 1.42105 0.537578
II.AAK.BHZ.00 2021-04-28T02:26:13.87 10.0 positive automatic P 322 21.5329 1.64913 0.952381
IU.TIXI.BHZ.00 2021-04-28T02:30:10.37 10.0 negative automatic P 14 49.2137 -0.631309 0.530198
G.ATD.BHZ.00 2021-04-28T02:30:09.10 10.0 positive automatic P 262 48.8218 1.00494 0.548215
II.OBN.BHZ.00 2021-04-28T02:30:09.17 10.0 positive automatic P 321 48.9638 0.0663671 0.571346
KO.SNOP.BHZ. 2021-04-28T02:30:06.92 10.0 positive automatic P 304 48.5944 0.650828 0.549409
GE.FAKI.BHZ. 2021-04-28T02:30:04.22 10.0 positive automatic P 121 48.613 -2.18492 0.577208
GE.SOEI.BHZ. 2021-04-28T02:29:57.27 10.0 positive automatic P 135 47.8815 -9.44817 0
KO.GAZ.BHZ. 2021-04-28T02:29:57.16 10.0 positive automatic P 297 47.2474 1.18211 0.620509
IU.YSS.BHZ.00 2021-04-28T02:29:31.55 10.0 positive automatic P 49 44.1736 0.0120101 0.624896
II.ERM.BHZ.00 2021-04-28T02:29:29.22 10.0 positive automatic P 56 43.9148 -0.224591 0.643614
JP.JKA.BHZ. 2021-04-28T02:29:27.70 10.0 positive automatic P 57 43.4418 2.03144 0.31521
II.KIV.BHZ.00 2021-04-28T02:29:25.07 10.0 positive automatic P 307 43.2267 0.997364 0.67095
GE.SANI.BHZ. 2021-04-28T02:29:22.12 10.0 positive automatic P 126 43.383 -3.04158 0.684039
IU.YAK.BHZ.00 2021-04-28T02:29:22.42 10.0 positive automatic P 25 43.0757 -0.270843 0.658369
JP.JTM.BHZ. 2021-04-28T02:29:15.45 10.0 negative automatic P 58 42.27 -0.70104 0.672693
GE.JAGI.BHZ. 2021-04-28T02:29:04.72 10.0 negative automatic P 146 41.0864 -1.74602 0.727066
GE.LUWI.BHZ. 2021-04-28T02:28:58.87 10.0 positive automatic P 129 40.3916 -1.83214 0
IU.MAJO.BHZ.00 2021-04-28T02:28:55.27 10.0 positive automatic P 64 39.8671 -1.15226 0.685187
JP.JGF.BHZ. 2021-04-28T02:28:49.65 10.0 positive automatic P 66 39.1727 -1.01125 0.746157
G.INU.BHZ.00 2021-04-28T02:28:47.81 10.0 negative automatic P 66 38.9075 -0.555391 0.769101
II.ARTI.BHZ.00 2021-04-28T02:28:43.17 10.0 positive automatic P 330 38.2889 -0.0332999 0.78125
GE.SMRI.BHZ. 2021-04-28T02:28:41.57 10.0 positive automatic P 150 38.0801 0.149542 0.36248
JP.JMN.BHZ. 2021-04-28T02:28:28.40 10.0 negative automatic P 69 36.3142 1.90988 0.765961
MY.LDM.BHZ. 2021-04-28T02:27:57.77 10.0 positive automatic P 126 32.9806 0.160339 0.830125
II.UOSS.BHZ.00 2021-04-28T02:27:52.52 10.0 positive automatic P 275 32.4555 -0.510426 0.39397
GE.KAAM.BHZ. 2021-04-28T02:27:51.92 10.0 positive automatic P 218 32.17 1.44095 0.885473
JP.JOW.BHZ. 2021-04-28T02:27:47.35 10.0 negative automatic P 82 31.97 -1.40585 0.889628
MY.SBM.BHZ. 2021-04-28T02:27:38.42 10.0 positive automatic P 139 30.8753 -0.706326 0.912535
MY.KKM.BHZ. 2021-04-28T02:27:38.02 10.0 positive automatic P 128 30.7496 -0.0982127 0.936975
JP.YOJ.BHZ. 2021-04-28T02:27:11.70 10.0 positive automatic P 88 27.6915 0.86812 0.930233
GE.HMDM.BHZ. 2021-04-28T02:27:06.72 10.0 positive automatic P 226 27.0282 1.84769 0.869565
IU.TATO.BHZ.00 2021-04-28T02:27:00.32 10.0 negative automatic P 87 26.2455 2.47464 0.740741
II.TLY.BHZ.00 2021-04-28T02:26:59.97 10.0 positive automatic P 16 26.3563 1.05533 0.888889
II.KURK.BHZ.00 2021-04-28T02:26:56.67 10.0 positive automatic P 340 26.1477 -0.295113 0.952381
GE.GSI.BHZ. 2021-04-28T02:26:54.72 10.0 negative automatic P 168 25.9355 -0.309614 0.930233
IU.ULN.BHZ.00 2021-04-28T02:26:37.47 10.0 positive automatic P 25 24.0509 -0.678535 0.952381
GE.HALK.BHZ. 2021-04-28T02:26:33.60 10.0 positive automatic P 210 23.4508 1.26823 0.952381
MY.KUM.BHZ. 2021-04-28T02:26:24.72 10.0 positive automatic P 158 22.8755 -1.54554 0.888889
II.PALK.BHZ.00 2021-04-28T02:26:21.95 10.0 positive automatic P 212 22.3903 0.758916 0.930233
GE.LHMI.BHZ. 2021-04-28T02:26:17.17 10.0 negative automatic P 168 21.9629 0.618118 0
IU.MAKZ.BHZ.00 2021-04-28T02:26:13.02 10.0 positive automatic P 341 21.6621 -0.4096 0.930233
GE.MALK.BHZ. 2021-04-28T02:26:12.67 10.0 positive automatic P 213 21.4844 1.22962 0.930233
RM.DLV.BHZ. 2021-04-28T02:26:08.82 10.0 positive automatic P 131 21.1908 0.353553 0.930233
II.NIL.BHZ.00 2021-04-28T02:25:27.22 10.0 positive automatic P 297 17.8277 -3.7568 0.851064
IO.EVN.BHZ. 2021-04-28T02:22:42.05 10.0 positive automatic P 285 5.0508 2.61123 0.909091
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