Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Mwp 6.1 on date 02-12-2019 and time 05:01:56 (UTC) in region Andreanof Islands, Aleutian Islands, United States [Sea: United States]

A magnitude Mwp 6.1 earthquake occured in region: Andreanof Islands, Aleutian Islands, United States [Sea: United States], on

  • 02-12-2019 05:01:56 (UTC)
  • 02-12-2019 06:01:56 (UTC +01:00) Italian time
  • 01-12-2019 19:01:56 (UTC -10:00) local time in the region of the earthquake (America/Adak)

and geographic coordinates (lat, lon) 51.29, -178.14 at 15 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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
Reviewed
Rev100 		mb 5.5
Mwp 6.1
Mwpd 6.2 		2019-12-02
05:01:56		 51.29 -178.14 15 2019-12-02
05:18:03		 Sala Sismica INGV-Roma 74236961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-02 05:01:56
Latitude 51.29
Longitude -178.14
Depth (km) 15 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 74236961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 23394
Semi-minor axis of confidence ellipse (meter) 689
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 351
Circular confidence region, given by single value of horizontal uncertainty (meter) 18891.8
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123.041
Number of associated phases, regardless of their use for origin computation 134
Number of defining phases 134
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.38277
Epicentral distance of station closest to the epicenter (degree) 1.0812
Epicentral distance of station farthest from the epicenter (degree) 77.90397
Number of stations at which the event was observed 122
Number of stations from which data was used for origin computation 122
Magnitudes information

Mwpd:6.2

Field Value
Value 6.2
Uncertainty 0.1
Num. used stations 18
Type of magnitude Mwpd
Reference to an origin 74236961
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2019-12-02 05:18:03

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 23
Type of magnitude Mwp
Reference to an origin 74236961
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2019-12-02 05:18:03

mb:5.5

Field Value
Value 5.5
Uncertainty 0.1
Num. used stations 93
Type of magnitude mb
Reference to an origin 74236961
Agency INGV
Autore early-est_ee1.1.9
Time of creation (UTC) 2019-12-02 05:18:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IU.CTAO.BHZ.00 2019-12-02T05:13:48.27 10.0 positive automatic P 214 77.904 -3.59119 0.184132
GE.FLT1.BHZ. 2019-12-02T05:13:40.85 10.0 positive automatic P 354 76.0716 -0.653718 0.179394
GE.IBBN.BHZ. 2019-12-02T05:13:42.90 10.0 positive automatic P 356 76.2778 0.214192 0.201833
GE.RUE.BHZ. 2019-12-02T05:13:39.05 10.0 positive automatic P 353 75.7426 -0.56706 0.157117
GE.BKB.BHZ. 2019-12-02T05:13:37.62 10.0 positive automatic P 249 75.5413 -0.853044 0
IU.TEIG.BHZ.00 2019-12-02T05:13:30.90 10.0 negative automatic P 77 74.2638 -0.184242 0
IU.KIEV.BHZ.00 2019-12-02T05:13:36.72 10.0 positive automatic P 342 75.3924 -0.910875 0.210595
GE.DSB.BHZ. 2019-12-02T05:13:36.35 10.0 positive automatic P 5 75.2301 -0.362139 0
GE.RGN.BHZ. 2019-12-02T05:13:28.55 10.0 positive automatic P 353 73.7246 0.625164 0
IU.DWPF.BHZ.00 2019-12-02T05:13:19.87 10.0 negative automatic P 67 72.3454 0.111244 0.259893
GE.LUWI.BHZ. 2019-12-02T05:13:15.07 10.0 positive automatic P 244 72.1161 -3.31178 0.239202
IU.CHTO.BHZ.00 2019-12-02T05:13:10.52 10.0 positive automatic P 277 71.0496 -1.50588 0.247822
GE.SANI.BHZ. 2019-12-02T05:13:09.22 10.0 positive automatic P 241 71.1682 -3.45682 0.260892
IN.SHL.HHZ. 2019-12-02T05:13:06.77 10.0 positive automatic P 287 70.317 -0.722467 0.283764
US.NHSC.BHZ.00 2019-12-02T05:13:01.55 10.0 positive automatic P 62 69.2868 0.401137 0.296289
IU.KONO.BHZ.00 2019-12-02T05:12:59.37 10.0 positive automatic P 356 68.8782 0.719467 0.280788
GB.LRW.BHZ. 2019-12-02T05:12:57.08 10.0 positive automatic P 2 68.5412 0.547429 0.307022
GE.VSU.BHZ. 2019-12-02T05:12:54.10 10.0 positive automatic P 346 68.3831 -1.43802 0.293198
GE.FAKI.BHZ. 2019-12-02T05:12:53.97 10.0 positive automatic P 235 68.5918 -2.8811 0.284104
CN.DRLN.BHZ. 2019-12-02T05:12:49.28 10.0 negative automatic P 37 67.4638 -0.50517 0.319117
US.GOGA.BHZ.00 2019-12-02T05:12:47.05 10.0 positive automatic P 64 67.2205 -1.16827 0.314555
US.BRAL.BHZ.00 2019-12-02T05:12:46.48 10.0 negative automatic P 69 66.8137 0.854249 0.301707
US.PKME.BHZ.00 2019-12-02T05:12:38.15 10.0 negative automatic P 47 65.6592 -0.0742153 0.338422
US.LRAL.BHZ.00 2019-12-02T05:12:35.88 10.0 negative automatic P 67 65.4786 -1.18313 0.336726
US.LBNH.BHZ.00 2019-12-02T05:12:35.40 10.0 positive automatic P 49 65.2063 0.061783 0.332346
IM.TKL.BHZ. 2019-12-02T05:12:35.87 10.0 positive automatic P 63 65.4025 -0.736741 0.329857
IU.SSPA.BHZ.00 2019-12-02T05:12:32.90 10.0 positive automatic P 56 64.9277 -0.616296 0.348037
US.TZTN.BHZ.00 2019-12-02T05:12:32.98 10.0 positive automatic P 62 64.8837 -0.271155 0.113472
US.BINY.BHZ.00 2019-12-02T05:12:31.95 10.0 positive automatic P 53 64.7443 -0.407855 0.35047
US.MCWV.BHZ.00 2019-12-02T05:12:31.45 10.0 negative automatic P 57 64.6218 -0.0658051 0.335912
US.VBMS.BHZ.00 2019-12-02T05:12:28.13 10.0 negative automatic P 70 64.0232 0.575205 0.339655
US.LONY.BHZ.00 2019-12-02T05:12:23.70 10.0 positive automatic P 51 63.6535 -1.48758 0.365112
US.OXF.BHZ.00 2019-12-02T05:12:20.03 10.0 positive automatic P 68 63.0279 -0.961686 0.356465
US.ERPA.BHZ.00 2019-12-02T05:12:19.75 10.0 positive automatic P 56 62.7678 0.458504 0.37722
II.ARTI.BHZ.00 2019-12-02T05:12:18.32 10.0 positive automatic P 329 62.6771 -0.367247 0.373966
IU.WVT.BHZ.00 2019-12-02T05:12:18.65 10.0 positive automatic P 65 62.7812 -0.7131 0.386345
IU.HKT.BHZ.00 2019-12-02T05:12:17.20 10.0 negative automatic P 76 62.4635 0.0556211 0.36812
US.ACSO.BHZ.00 2019-12-02T05:12:17.45 10.0 positive automatic P 59 62.5411 -0.32652 0.173457
CN.GAC.BHZ. 2019-12-02T05:12:16.68 10.0 negative automatic P 50 62.431 -0.327476 0.360179
IU.WCI.BHZ.00 2019-12-02T05:12:14.27 10.0 positive automatic P 63 62.1554 -0.911633 0.347977
US.NATX.BHZ.00 2019-12-02T05:12:13.25 10.0 negative automatic P 73 61.8916 -0.1509 0.389395
II.BORK.BHZ.00 2019-12-02T05:12:06.15 10.0 positive automatic P 320 60.9468 -0.899116 0.359432
US.AAM.BHZ.00 2019-12-02T05:12:05.53 10.0 negative automatic P 58 60.7211 0.0426961 0.401124
US.MIAR.BHZ.00 2019-12-02T05:12:03.60 10.0 positive automatic P 70 60.5728 -0.873619 0.364201
IU.MAKZ.BHZ.00 2019-12-02T05:12:00.75 10.0 positive automatic P 309 60.2952 -1.90488 0.375843
IU.CCM.BHZ.00 2019-12-02T05:11:55.27 10.0 positive automatic P 66 59.4886 -1.76876 0.408989
MX.HPIG.BHZ. 2019-12-02T05:11:50.07 10.0 positive automatic P 85 58.5752 -0.896095 0.394448
US.GLMI.BHZ.00 2019-12-02T05:11:50.75 10.0 negative automatic P 56 58.4755 0.71545 0.413774
IU.SLBS.BHZ.00 2019-12-02T05:11:48.92 10.0 negative automatic P 91 58.2509 0.379466 0.436783
II.LVZ.BHZ.00 2019-12-02T05:11:48.22 10.0 negative automatic P 346 58.3142 -0.727905 0.44648
IU.KEV.BHZ.00 2019-12-02T05:11:44.07 10.0 positive automatic P 350 57.5664 0.457432 0.457835
II.FFC.BHZ.00 2019-12-02T05:09:57.32 10.0 positive automatic P 54 43.6598 -1.35221 0.678384
US.WMOK.BHZ.00 2019-12-02T05:11:41.53 10.0 positive automatic P 74 57.3463 -0.601504 0.429757
US.JFWS.BHZ.00 2019-12-02T05:11:36.73 10.0 negative automatic P 61 56.7563 -1.19596 0.44842
US.SCIA.BHZ.00 2019-12-02T05:11:31.15 10.0 negative automatic P 64 55.7783 0.208144 0.457651
US.KSU1.BHZ.00 2019-12-02T05:11:30.23 10.0 positive automatic P 68 55.692 -0.0961701 0.492927
US.AMTX.BHZ.00 2019-12-02T05:11:28.48 10.0 positive automatic P 75 55.5 -0.58248 0.467159
GE.SFJD.BHZ.00 2019-12-02T05:11:27.57 10.0 negative automatic P 22 55.2853 0.174833 0.481599
US.MNTX.BHZ.00 2019-12-02T05:11:27.60 10.0 positive automatic P 81 55.4067 -0.68149 0.44282
MX.HSIG.BHZ. 2019-12-02T05:11:21.18 10.0 positive automatic P 87 53.804 4.5626 0.504803
US.CBKS.BHZ.00 2019-12-02T05:11:18.20 10.0 positive automatic P 71 54.0498 -0.294132 0.495022
DK.ILULI.BHZ. 2019-12-02T05:11:14.20 10.0 negative automatic P 21 53.423 0.399126 0.47893
US.EYMN.BHZ.00 2019-12-02T05:11:09.38 10.0 negative automatic P 57 52.8468 -0.24626 0.507994
IU.ANMO.BHZ.00 2019-12-02T05:11:07.12 10.0 positive automatic P 79 52.5487 -0.530621 0.495406
CN.FRB.BHZ. 2019-12-02T05:11:07.25 10.0 positive automatic P 32 52.6192 -0.614528 0.536531
US.ECSD.BHZ.00 2019-12-02T05:11:06.90 10.0 positive automatic P 64 52.6952 -1.605 0.516383
IU.TIXI.BHZ.00 2019-12-02T05:08:08.22 10.0 negative automatic P 331 30.7705 -1.17005 0.836306
IU.TUC.BHZ.00 2019-12-02T05:11:00.07 10.0 positive automatic P 84 51.641 -0.665936 0.49274
US.OGNE.BHZ.00 2019-12-02T05:10:59.35 10.0 negative automatic P 70 51.3316 0.902483 0.558035
US.SDCO.BHZ.00 2019-12-02T05:10:56.43 10.0 positive automatic P 75 51.2993 -2.04145 0.284494
US.AGMN.BHZ.00 2019-12-02T05:10:49.68 10.0 positive automatic P 59 50.3181 -1.01548 0.28763
US.ISCO.BHZ.00 2019-12-02T05:10:47.98 10.0 positive automatic P 73 49.9265 -0.157773 0.581986
GE.KBS.BHZ.00 2019-12-02T05:10:45.52 10.0 positive automatic P 357 49.6398 0.0304145 0.572959
US.WUAZ.BHZ.00 2019-12-02T05:10:40.80 10.0 positive automatic P 81 49.1461 -1.18299 0.581326
II.PFO.BHZ.00 2019-12-02T05:10:27.27 10.0 negative automatic P 87 47.2353 0.105361 0.560863
DK.NOR.BHZ. 2019-12-02T05:10:22.30 10.0 positive automatic P 4 46.7294 -0.700389 0.568968
IU.ULN.BHZ.00 2019-12-02T05:10:21.27 10.0 positive automatic P 297 46.4742 -0.00215391 0.585815
II.TLY.BHZ.00 2019-12-02T05:10:18.82 10.0 positive automatic P 303 46.2534 -0.536842 0.60286
US.DGMT.BHZ.00 2019-12-02T05:10:15.10 10.0 negative automatic P 63 45.665 0.370832 0.586212
US.DUG.BHZ.00 2019-12-02T05:10:12.13 10.0 positive automatic P 77 45.3292 -0.0883418 0.585341
US.HWUT.BHZ.00 2019-12-02T05:10:11.55 10.0 positive automatic P 75 45.2469 -0.0686047 0.606234
US.TPNV.BHZ.00 2019-12-02T05:10:10.93 10.0 positive automatic P 83 45.2081 -0.343929 0.642583
DK.TULEG.BHZ. 2019-12-02T05:10:07.45 10.0 positive automatic P 18 44.7023 0.472314 0.589217
US.RLMT.BHZ.00 2019-12-02T05:10:06.30 10.0 positive automatic P 70 44.6014 -0.223571 0.603697
US.LKWY.BHZ.00 2019-12-02T05:10:05.63 10.0 negative automatic P 71 44.2454 1.88951 0.675712
US.ELK.BHZ.00 2019-12-02T05:09:57.95 10.0 positive automatic P 78 43.5192 0.087079 0.621754
US.BOZ.BHZ.00 2019-12-02T05:09:52.88 10.0 positive automatic P 70 42.9531 -0.306429 0.683295
US.EGMT.BHZ.00 2019-12-02T05:09:49.93 10.0 positive automatic P 66 42.7605 -1.5993 0.467044
US.HLID.BHZ.00 2019-12-02T05:09:48.68 10.0 positive automatic P 74 42.408 -0.10891 0.626941
BK.CMB.BHZ.00 2019-12-02T05:09:46.02 10.0 positive automatic P 85 41.9607 1.06759 0.621215
JP.JNU.BHZ. 2019-12-02T05:09:36.30 10.0 positive automatic P 264 40.8713 0.31664 0.713593
US.MSO.BHZ.00 2019-12-02T05:09:36.35 10.0 positive automatic P 70 40.9451 -0.367206 0.720598
IU.INCN.BHZ.00 2019-12-02T05:09:34.92 10.0 positive automatic P 272 40.7274 0.206927 0.669562
US.WVOR.BHZ.00 2019-12-02T05:09:33.23 10.0 positive automatic P 78 40.4691 0.422913 0.765616
US.BMO.BHZ.00 2019-12-02T05:09:28.55 10.0 positive automatic P 75 39.9669 -0.0563084 0.661327
CN.RES.BHZ. 2019-12-02T05:09:24.88 10.0 positive automatic P 24 39.4578 0.70205 0.776266
JP.JMN.BHZ. 2019-12-02T05:09:17.85 10.0 positive automatic P 262 38.6044 0.731268 0.650534
US.NEW.BHZ.00 2019-12-02T05:09:15.15 10.0 positive automatic P 70 38.3695 -0.0313524 0.807918
JP.JCJ.BHZ. 2019-12-02T05:09:14.90 10.0 negative automatic P 246 38.376 -0.230518 0.778936
US.HAWA.BHZ.00 2019-12-02T05:09:11.23 10.0 positive automatic P 74 37.8422 0.556781 0.789481
IU.COR.BHZ.00 2019-12-02T05:09:00.92 10.0 positive automatic P 78 36.459 2.04203 0.837065
G.INU.BHZ.00 2019-12-02T05:08:50.86 10.0 positive automatic P 261 35.5857 -0.540068 0.715575
JP.JHJ2.BHZ. 2019-12-02T05:08:50.05 10.0 positive automatic P 256 35.3815 0.416196 0.76605
JP.JGF.BHZ. 2019-12-02T05:08:48.45 10.0 positive automatic P 261 35.2194 0.122153 0.842321
US.NLWA.BHZ.00 2019-12-02T05:08:45.58 10.0 positive automatic P 75 34.76 1.19823 0.79497
IU.MAJO.BHZ.00 2019-12-02T05:08:38.62 10.0 positive automatic P 262 34.0876 0.106679 0.865654
CN.OZB.BHZ. 2019-12-02T05:08:31.40 10.0 positive automatic P 73 33.0996 1.45205 0.896956
JP.JSD.BHZ. 2019-12-02T05:08:30.10 10.0 positive automatic P 264 33.1189 0.0645696 0.90748
CN.BBB.BHZ. 2019-12-02T05:08:06.65 10.0 positive automatic P 68 30.3699 0.808011 0.944532
II.ERM.BHZ.00 2019-12-02T05:07:41.97 10.0 positive automatic P 266 27.7588 -0.686706 0.97561
CN.INK.BHZ. 2019-12-02T05:07:41.28 10.0 negative automatic P 35 27.1733 3.86886 0.941176
AT.CRAG.BHZ. 2019-12-02T05:07:34.72 10.0 negative automatic P 63 26.691 1.65273 0.961538
IU.YSS.BHZ.00 2019-12-02T05:07:24.45 10.0 positive automatic P 276 25.6334 0.931994 0.952381
IU.COLA.BHZ.00 2019-12-02T05:06:32.50 10.0 positive automatic P 37 20.6396 -1.04583 0.963855
IU.MA2.BHZ.00 2019-12-02T05:06:18.77 10.0 positive automatic P 308 19.2488 0.359068 0.784314
II.KDAK.BHZ.00 2019-12-02T05:05:36.32 10.0 positive automatic P 56 16.0608 -3.54114 0.941176
AK.TNA.BHZ. 2019-12-02T05:05:31.45 10.0 positive automatic P 16 15.1909 2.92229 0.775194
IU.PET.BHZ.00 2019-12-02T05:05:16.67 10.0 positive automatic P 286 14.2774 0.502554 0.97561
AT.AKUT.BHZ. 2019-12-02T05:03:53.22 10.0 positive automatic P 64 8.002 2.93677 0.970874
AT.SMY.BHZ. 2019-12-02T05:03:09.76 10.0 negative automatic P 290 4.9811 0.957459 0.970874
AK.ATKA.BHZ. 2019-12-02T05:02:34.65 10.0 positive automatic P 68 2.6059 -1.50222 0.970874
IU.ADK.BHZ.00 2019-12-02T05:02:12.75 10.0 positive automatic P 56 1.0812 -2.20513 0.987654
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