Earthquake with magnitude of Mwp 6.5 on date 22-09-2021 and time 11:57:10 (Italy) in region Near coast of Nicaragua [Sea: Nicaragua]

A magnitude Mwp 6.5 earthquake occured in region: Near coast of Nicaragua [Sea: Nicaragua], on

  • 22-09-2021 09:57:10 (UTC)
  • 22-09-2021 11:57:10 (UTC +02:00) Italian time
  • 22-09-2021 03:57:10 (UTC -06:00) local time in the region of the earthquake (America/Managua)

and geographic coordinates (lat, lon) 12.16, -87.689 at 63 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 6.5

Mwpd 6.5
2021-09-22
09:57:10
12.1605 -87.6892 63 2021-09-22
10:12:53
Sala Sismica INGV-Roma 95734001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-22 09:57:10
Latitude 12.1605
Longitude -87.6892
Depth (km) 63 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 95734001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 6601
Semi-minor axis of confidence ellipse (meter) 3102
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 5836.4
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106.979
Number of associated phases, regardless of their use for origin computation 113
Number of defining phases 113
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.22521
Epicentral distance of station closest to the epicenter (degree) 1.9392
Epicentral distance of station farthest from the epicenter (degree) 62.65754
Number of stations at which the event was observed 109
Number of stations from which data was used for origin computation 109
Magnitudes information

Mwpd:6.5

Field Value
Value 6.5
Uncertainty 0.1
Num. used stations 74
Type of magnitude Mwpd
Reference to an origin 95734001
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-09-22 10:12:53

Mwp:6.5

Field Value
Value 6.5
Uncertainty 0.2
Num. used stations 91
Type of magnitude Mwp
Reference to an origin 95734001
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-09-22 10:12:53

mb:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 94
Type of magnitude mb
Reference to an origin 95734001
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2021-09-22 10:12:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
CN.RES.BHZ. 2021-09-22T10:07:26.70 10.0 negative automatic P 358 62.6575 -1.42226 0.374167
G.COYC.BHZ.00 2021-09-22T10:07:06.50 10.0 positive automatic P 167 59.4251 0.232699 0.400502
C1.LL02.BHZ. 2021-09-22T10:07:01.13 10.0 negative automatic pP 166 57.2131 -6.29339 0
DK.NUUK.BHZ.00 2021-09-22T10:06:56.35 10.0 positive automatic P 18 57.7251 1.92192 0.414864
C1.LL02.BHZ. 2021-09-22T10:06:50.70 10.0 negative automatic P 166 57.2131 -0.168559 0.44163
G.IVI.BHZ.00 2021-09-22T10:06:48.30 10.0 positive automatic P 21 56.7788 0.561659 0.437833
US.WRAK.BHZ.00 2021-09-22T10:06:44.10 10.0 negative automatic P 332 55.9342 2.35725 0.460565
C1.LL01.BHZ. 2021-09-22T10:06:44.48 10.0 positive automatic P 166 56.3124 0.0401901 0.143309
AT.CRAG.BHZ. 2021-09-22T10:06:42.74 10.0 negative automatic P 331 55.7761 2.13371 0.478513
IU.RCBR.BHZ.00 2021-09-22T10:06:31.17 10.0 positive automatic P 106 54.5342 -0.552669 0.22764
C.GO06.BHZ. 2021-09-22T10:06:26.98 10.0 positive automatic P 165 53.8979 -0.264214 0.454538
G.SPB.BHZ.00 2021-09-22T10:06:21.55 10.0 positive automatic P 132 53.1773 -0.312598 0.469951
CN.BBB.BHZ. 2021-09-22T10:06:11.05 10.0 positive automatic P 329 51.4852 1.82684 0.542143
BL.PMNB.HHZ. 2021-09-22T10:06:05.35 10.0 positive automatic P 126 50.9584 -0.0904658 0.53553
C1.BO02.BHZ. 2021-09-22T10:05:55.37 10.0 positive automatic P 162 49.6146 0.0918156 0.276767
C.GO05.BHZ. 2021-09-22T10:05:53.65 10.0 positive automatic P 163 49.4769 -0.445025 0.568858
G.PEL.BHZ.00 2021-09-22T10:05:44.15 10.0 positive automatic P 161 48.1221 0.335465 0.59879
WA.ZON.HHZ. 2021-09-22T10:05:38.32 10.0 negative automatic P 158 47.3508 0.459105 0.624064
US.NLWA.BHZ.00 2021-09-22T10:05:31.50 10.0 positive automatic P 327 46.4299 0.850373 0.628356
C1.CO02.BHZ. 2021-09-22T10:05:28.98 10.0 negative automatic P 160 46.2265 -0.176332 0.603232
C.GO04.BHZ. 2021-09-22T10:05:22.63 10.0 positive automatic P 159 45.347 0.242147 0.618211
CN.DRLN.BHZ. 2021-09-22T10:05:16.00 10.0 positive automatic P 28 44.672 -0.699287 0.667773
IU.COR.BHZ.00 2021-09-22T10:05:15.77 10.0 positive automatic P 324 44.448 0.877142 0.541424
IU.LCO.BHZ.00 2021-09-22T10:05:14.57 10.0 positive automatic P 159 44.3191 0.327609 0.621819
II.FFC.BHZ.00 2021-09-22T10:05:10.32 10.0 positive automatic P 348 44.0219 -1.21255 0.68804
US.NEW.BHZ.00 2021-09-22T10:05:07.15 10.0 positive automatic P 332 43.616 -1.19764 0.62686
US.HAWA.BHZ.00 2021-09-22T10:05:07.28 10.0 positive automatic P 328 43.5052 -0.111569 0.681136
C.GO03.BHZ. 2021-09-22T10:05:05.18 10.0 positive automatic P 157 43.2036 0.151333 0.554642
US.BMO.BHZ.00 2021-09-22T10:04:48.78 10.0 positive automatic P 328 41.3173 -0.98579 0.730711
US.MSO.BHZ.00 2021-09-22T10:04:47.45 10.0 positive automatic P 333 41.106 -0.591736 0.743731
BK.MCCM.BHZ.00 2021-09-22T10:04:45.90 10.0 positive automatic P 316 40.6745 1.6211 0.338884
US.WVOR.BHZ.00 2021-09-22T10:04:42.88 10.0 negative automatic P 324 40.4531 0.189847 0.729798
US.EGMT.BHZ.00 2021-09-22T10:04:41.03 10.0 positive automatic P 337 40.3107 -0.430292 0.707525
BK.CMB.BHZ.00 2021-09-22T10:04:31.47 10.0 positive automatic P 317 38.9438 1.43085 0.686032
US.BOZ.BHZ.00 2021-09-22T10:04:31.65 10.0 positive automatic P 333 39.1342 -0.131157 0.697553
US.HLID.BHZ.00 2021-09-22T10:04:29.95 10.0 positive automatic P 329 38.9328 -0.182656 0.693602
US.DGMT.BHZ.00 2021-09-22T10:04:28.33 10.0 positive automatic P 343 38.8185 -0.658148 0.735146
US.LKWY.BHZ.00 2021-09-22T10:04:21.90 10.0 negative automatic P 333 37.7862 1.2818 0.790493
US.LAO.BHZ.00 2021-09-22T10:04:20.38 10.0 positive automatic P 339 37.8995 -0.933206 0.689717
US.RLMT.BHZ.00 2021-09-22T10:04:19.55 10.0 positive automatic P 335 37.7478 -0.68424 0.791256
US.ELK.BHZ.00 2021-09-22T10:04:18.38 10.0 negative automatic P 325 37.4247 0.847825 0.728318
US.PKME.BHZ.00 2021-09-22T10:04:10.38 10.0 positive automatic P 22 36.6274 -0.0253415 0.823448
US.AHID.BHZ.00 2021-09-22T10:04:10.88 10.0 positive automatic P 331 36.7135 -0.576417 0.831716
US.AGMN.BHZ.00 2021-09-22T10:04:09.53 10.0 positive automatic P 351 36.7724 -2.15006 0.782773
CX.MNMCX.BHZ. 2021-09-22T10:04:06.60 10.0 negative automatic P 150 36.0133 1.05307 0.7885
US.HWUT.BHZ.00 2021-09-22T10:04:05.13 10.0 positive automatic P 329 36.0716 -0.837573 0.844984
US.TPNV.BHZ.00 2021-09-22T10:04:04.05 10.0 positive automatic P 319 35.6282 1.92228 0.814481
US.BW06.BHZ.00 2021-09-22T10:04:04.50 10.0 positive automatic P 332 35.9958 -0.884179 0.75454
US.DUG.BHZ.00 2021-09-22T10:04:02.88 10.0 positive automatic P 326 35.7047 0.11103 0.794482
US.EYMN.BHZ.00 2021-09-22T10:04:01.55 10.0 positive automatic P 356 35.9253 -2.92817 0.799286
NN.PRN.HHZ. 2021-09-22T10:04:00.14 10.0 positive automatic P 321 35.1524 1.8385 0.714335
G.MPG.BHZ.00 2021-09-22T10:03:59.65 10.0 positive automatic P 98 35.3205 0.409379 0
CN.GAC.BHZ. 2021-09-22T10:03:57.03 10.0 negative automatic P 15 35.1106 -0.395498 0.738895
IU.RSSD.BHZ.00 2021-09-22T10:03:55.80 10.0 positive automatic P 339 34.9093 -0.24422 0.828849
US.LBNH.BHZ.00 2021-09-22T10:03:54.50 10.0 positive automatic P 20 34.8162 -0.440934 0.768191
US.LONY.BHZ.00 2021-09-22T10:03:49.75 10.0 positive automatic P 17 34.3441 -1.12678 0.794064
II.PFO.BHZ.00 2021-09-22T10:03:49.05 10.0 positive automatic P 314 33.8726 2.10815 0.891239
IU.HRV.BHZ.00 2021-09-22T10:03:43.32 10.0 positive automatic P 22 33.4223 0.479156 0.568236
US.ECSD.BHZ.00 2021-09-22T10:03:32.43 10.0 positive automatic P 348 32.4955 -2.37188 0.80328
US.ISCO.BHZ.00 2021-09-22T10:03:29.35 10.0 positive automatic P 333 31.8484 -0.169756 0.90191
US.WUAZ.BHZ.00 2021-09-22T10:03:28.70 10.0 negative automatic P 321 31.674 0.910694 0.855276
US.BINY.BHZ.00 2021-09-22T10:03:27.60 10.0 positive automatic P 17 31.7181 -0.388083 0.873816
US.OGNE.BHZ.00 2021-09-22T10:03:25.98 10.0 positive automatic P 339 31.4131 0.573883 0.933053
US.MVCO.BHZ.00 2021-09-22T10:03:24.43 10.0 negative automatic P 327 31.2107 0.613335 0.91539
US.JFWS.BHZ.00 2021-09-22T10:03:18.80 10.0 positive automatic P 356 30.8322 -1.36437 0.923438
US.ERPA.BHZ.00 2021-09-22T10:03:18.40 10.0 negative automatic P 11 30.6975 -0.574272 0.915539
US.AAM.BHZ.00 2021-09-22T10:03:15.30 10.0 positive automatic P 6 30.343 -0.52068 0.956397
US.SDCO.BHZ.00 2021-09-22T10:03:14.23 10.0 positive automatic P 331 30.1283 -0.110765 0.789826
IU.SSPA.BHZ.00 2021-09-22T10:03:10.15 10.0 positive automatic P 15 29.7492 -0.444188 0.898876
IU.BBSR.BHZ.00 2021-09-22T10:03:07.62 10.0 positive automatic P 43 29.2091 1.85135 0.91954
US.CBKS.BHZ.00 2021-09-22T10:03:00.50 10.0 positive automatic P 340 28.7212 -1.04831 0.941176
IU.ANMO.BHZ.00 2021-09-22T10:03:00.17 10.0 positive automatic P 326 28.4339 0.978278 0.91954
US.ACSO.BHZ.00 2021-09-22T10:02:57.80 10.0 negative automatic P 8 28.375 -0.603256 0.898876
US.HDIL.BHZ.00 2021-09-22T10:02:57.58 10.0 positive automatic P 357 28.4291 -1.29796 0.97561
US.KSU1.BHZ.00 2021-09-22T10:02:54.38 10.0 positive automatic P 345 28.0773 -1.38284 0.963855
MX.SRIG.BHZ. 2021-09-22T10:02:53.51 10.0 positive automatic P 307 27.5403 2.58601 0.816327
MX.HSIG.BHZ. 2021-09-22T10:02:51.27 10.0 positive automatic P 311 27.4329 1.27222 0.888889
II.NNA.BHZ.00 2021-09-22T10:02:42.42 10.0 positive automatic P 156 26.4381 1.29636 0.833333
IU.CCM.BHZ.00 2021-09-22T10:02:36.05 10.0 positive automatic P 354 26.0877 -1.85707 0.888889
US.AMTX.BHZ.00 2021-09-22T10:02:36.70 10.0 positive automatic P 333 26.0255 -0.77276 0.952381
US.BLA.BHZ.00 2021-09-22T10:02:36.15 10.0 positive automatic P 13 25.8833 0.0250594 0.879121
CU.GRGR.BHZ.00 2021-09-22T10:02:32.40 10.0 positive automatic P 87 25.4414 0.346987 0.43956
CU.ANWB.BHZ.00 2021-09-22T10:02:32.25 10.0 positive automatic P 74 25.6032 -1.23845 0.930233
US.TZTN.BHZ.00 2021-09-22T10:02:24.73 10.0 positive automatic P 8 24.6652 -0.313216 0.963855
IU.WVT.BHZ.00 2021-09-22T10:02:16.65 10.0 positive automatic P 360 23.9684 -2.00446 0.879121
US.MIAR.BHZ.00 2021-09-22T10:02:08.98 10.0 positive automatic P 348 23.0144 -0.805547 0.97561
US.OXF.BHZ.00 2021-09-22T10:02:02.20 10.0 positive automatic P 356 22.4049 -1.13797 0.909091
IU.SJG.BHZ.00 2021-09-22T10:01:55.17 10.0 positive automatic P 71 21.6062 0.266489 0.761905
US.GOGA.BHZ.00 2021-09-22T10:01:54.28 10.0 negative automatic P 10 21.5971 -0.47878 0.963855
US.LRAL.BHZ.00 2021-09-22T10:01:47.63 10.0 positive automatic P 2 20.888 0.46782 0.879121
US.NATX.BHZ.00 2021-09-22T10:01:44.53 10.0 positive automatic P 343 20.6224 0.226906 0.879121
US.VBMS.BHZ.00 2021-09-22T10:01:40.20 10.0 positive automatic P 353 20.2247 0.223696 0.655738
IU.HKT.BHZ.00 2021-09-22T10:01:31.40 10.0 positive automatic P 338 19.339 1.1214 0.909091
US.BRAL.BHZ.00 2021-09-22T10:01:28.60 10.0 positive automatic P 2 19.0165 1.77062 0.91954
CU.GRTK.BHZ.00 2021-09-22T10:01:22.95 10.0 positive automatic P 57 18.3759 3.13816 0.43956
CU.SDDR.BHZ.00 2021-09-22T10:01:08.50 10.0 positive automatic P 65 17.1942 2.34293 0.784314
IU.DWPF.BHZ.00 2021-09-22T10:01:05.27 10.0 positive automatic P 19 16.987 1.77245 0.610687
IU.OTAV.BHZ.00 2021-09-22T10:00:39.37 10.0 positive automatic P 142 15.039 -0.137852 0.754717
MX.MOIG.BHZ. 2021-09-22T10:00:38.99 10.0 positive automatic P 302 15.006 0.165936 0.816327
CU.GTBY.BHZ.00 2021-09-22T10:00:32.40 10.0 positive automatic P 56 14.3563 2.35919 0.610687
G.UNM.BHZ.00 2021-09-22T10:00:14.20 10.0 positive automatic P 304 13.1692 -0.415144 0.625
IU.PAYG.BHZ.00 2021-09-22T10:00:11.77 10.0 negative automatic P 192 13.0906 -1.43593 0.816327
MX.TLIG.BHZ. 2021-09-22T09:59:55.45 10.0 negative automatic P 299 11.8145 -0.508432 0.869565
CU.MTDJ.BHZ.00 2021-09-22T09:59:54.90 10.0 negative automatic P 57 11.519 3.00089 0.909091
IU.TEIG.BHZ.00 2021-09-22T09:59:06.15 10.0 positive automatic P 356 8.085 1.30883 0.930233
MX.CCIG.BHZ. 2021-09-22T09:58:36.51 10.0 negative automatic P 314 5.9631 0.433653 0.869565
G.HDC.BHZ.00 2021-09-22T09:58:10.15 10.0 positive automatic P 121 4.1211 -0.634304 0.952381
II.JTS.BHZ.00 2021-09-22T09:57:57.20 10.0 negative automatic P 125 3.2711 -1.8267 0.963855
GE.BOAB.BHZ. 2021-09-22T09:57:40.70 10.0 negative automatic P 81 1.9977 -0.980248 0.952381
CU.TGUH.BHZ.00 2021-09-22T09:57:40.10 10.0 negative automatic P 12 1.9392 -0.914076 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