Earthquake with magnitude of Mwp 6.1 on date 31-12-2018 and time 03:35:41 (Italy) in region Alaska Peninsula, United States [Sea: United States]

A magnitude Mwp 6.1 earthquake occured in region: Alaska Peninsula, United States [Sea: United States], on

  • 31-12-2018 02:35:41 (UTC)
  • 31-12-2018 03:35:41 (UTC +01:00) Italian time
  • 30-12-2018 17:35:41 (UTC -09:00) local time in the region of the earthquake (America/Anchorage)

and geographic coordinates (lat, lon) 54.87, -161.82 at 34 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 5.3
Mwp 6.1

Mwpd 6.1
2018-12-31
02:35:41
54.87 -161.82 34 2018-12-31
03:03:09
Sala Sismica INGV-Roma 64375931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-31 02:35:41
Latitude 54.87
Longitude -161.82
Depth (km) 34 (from location)
Evaluation mode of Origin automatic
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV-A
Event type earthquake
Origin ID 64375931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 17688
Semi-minor axis of confidence ellipse (meter) 7115
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 4
Circular confidence region, given by single value of horizontal uncertainty (meter) 15396.1
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140.529
Number of associated phases, regardless of their use for origin computation 130
Number of defining phases 130
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 1.14761
Epicentral distance of station closest to the epicenter (degree) 5.88473
Epicentral distance of station farthest from the epicenter (degree) 79.59769
Number of stations at which the event was observed 113
Number of stations from which data was used for origin computation 113
Magnitudes information

Mwpd:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 12
Type of magnitude Mwpd
Reference to an origin 64375931
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-12-31 03:03:09

Mwp:6.1

Field Value
Value 6.1
Uncertainty 0.1
Num. used stations 14
Type of magnitude Mwp
Reference to an origin 64375931
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-12-31 03:03:09

mb:5.3

Field Value
Value 5.3
Uncertainty 0.1
Num. used stations 85
Type of magnitude mb
Reference to an origin 64375931
Agency INGV
Autore Auto added
Time of creation (UTC) 2018-12-31 03:03:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.BNI.BHZ. 2018-12-31T02:47:47.12 10.0 positive automatic PcP 8 79.5977 -4.20085 0
MN.BZS.BHZ. 2018-12-31T02:47:44.67 10.0 positive automatic P 358 79.463 2.07416 0.180341
HU.KOVH.BHZ. 2018-12-31T02:47:42.65 10.0 positive automatic PcP 0 79.0363 -6.0363 0
MN.TUE.BHZ. 2018-12-31T02:47:39.90 10.0 negative automatic PcP 6 78.3778 -6.21131 0
GE.FAKI.BHZ. 2018-12-31T02:47:37.77 10.0 positive automatic P 248 78.8838 -1.64432 0.0857859
GE.TNTI.BHZ. 2018-12-31T02:47:35.22 10.0 positive automatic P 255 78.4518 -1.80278 0
GE.PSZ.BHZ. 2018-12-31T02:47:32.00 10.0 positive automatic PcP 359 77.1961 -7.81238 0
RD.LOR.BHZ. 2018-12-31T02:47:32.42 10.0 positive automatic pP 10 77.1446 -8.03835 0
RD.LOR.BHZ. 2018-12-31T02:47:32.08 10.0 negative automatic P 10 77.1446 2.25466 0.199178
GE.STU.BHZ. 2018-12-31T02:47:26.40 10.0 positive automatic pP 6 76.0785 -7.99021 0
CZ.KHC.BHZ. 2018-12-31T02:47:25.62 10.0 positive automatic pP 3 75.9223 -7.93372 0
GE.STU.BHZ. 2018-12-31T02:47:26.10 10.0 positive automatic P 6 76.0785 2.31854 0.160371
GE.MORC.BHZ. 2018-12-31T02:47:21.95 10.0 positive automatic pP 0 75.3469 -8.31001 0
PL.KWP.BHZ. 2018-12-31T02:47:22.95 10.0 negative automatic pP 357 75.4245 -7.7055 0
GE.WLF.BHZ. 2018-12-31T02:47:20.05 10.0 positive automatic pP 8 74.976 -7.99339 0
RD.ROSF.BHZ. 2018-12-31T02:47:21.64 10.0 positive automatic pP 15 75.2239 -7.83062 0
GB.JSA.BHZ. 2018-12-31T02:47:17.21 10.0 negative automatic pP 14 74.5464 -8.30244 0
CU.SDDR.BHZ.00 2018-12-31T02:47:16.10 10.0 negative automatic P 78 74.8704 -0.787527 0.221205
CU.TGUH.BHZ.00 2018-12-31T02:46:46.70 10.0 positive automatic P 94 69.6718 0.749771 0.272065
IU.MAKZ.BHZ.00 2018-12-31T02:46:17.25 10.0 positive automatic P 317 65.0111 0.883277 0.310013
II.BRVK.BHZ.00 2018-12-31T02:46:09.87 10.0 positive automatic P 328 63.8122 1.39858 0.367833
II.KURK.BHZ.00 2018-12-31T02:46:05.02 10.0 positive automatic P 322 63.0405 1.67527 0.323282
MX.TLIG.BHZ. 2018-12-31T02:45:43.80 10.0 positive automatic P 102 60.4163 -2.03855 0.396463
US.NHSC.BHZ.00 2018-12-31T02:45:34.40 10.0 positive automatic P 75 58.8826 -0.688129 0.438432
JP.JOW.BHZ. 2018-12-31T02:45:22.35 10.0 negative automatic P 271 56.9301 0.916728 0.456962
IU.HRV.BHZ.00 2018-12-31T02:45:19.62 10.0 positive automatic P 62 56.5858 0.634175 0.441161
US.BLA.BHZ.00 2018-12-31T02:45:11.63 10.0 negative automatic P 72 55.7258 -1.29672 0.475301
US.LBNH.BHZ.00 2018-12-31T02:45:08.75 10.0 negative automatic P 61 55.1539 -0.013733 0.47288
US.LRAL.BHZ.00 2018-12-31T02:45:05.63 10.0 positive automatic P 81 55.0949 -2.67237 0.496886
IU.SSPA.BHZ.00 2018-12-31T02:45:03.87 10.0 negative automatic P 68 54.6337 -1.1123 0.486456
US.BINY.BHZ.00 2018-12-31T02:45:03.70 10.0 negative automatic P 65 54.5248 -0.533536 0.493953
US.TZTN.BHZ.00 2018-12-31T02:45:02.25 10.0 negative automatic P 75 54.4809 -1.64586 0.500601
US.MCWV.BHZ.00 2018-12-31T02:45:01.05 10.0 negative automatic P 70 54.2799 -1.36843 0.503797
MX.ZAIG.BHZ. 2018-12-31T02:44:59.83 10.0 negative automatic P 102 53.9995 -0.913679 0.458551
US.LONY.BHZ.00 2018-12-31T02:44:56.15 10.0 positive automatic P 62 53.5427 -0.910501 0.515607
IU.ULN.BHZ.00 2018-12-31T02:44:56.32 10.0 positive automatic P 303 53.2042 1.54572 0.470102
DK.ANGG.BHZ. 2018-12-31T02:44:49.25 10.0 positive automatic P 26 52.3041 1.40026 0.529381
US.ERPA.BHZ.00 2018-12-31T02:44:48.98 10.0 positive automatic P 68 52.4709 -0.160079 0.526679
IU.HKT.BHZ.00 2018-12-31T02:44:48.12 10.0 positive automatic P 90 52.3108 0.293251 0.48856
US.MSO.BHZ.00 2018-12-31T02:41:51.35 10.0 negative automatic P 85 30.625 0.568661 0.857998
IU.WVT.BHZ.00 2018-12-31T02:44:46.60 10.0 positive automatic P 79 52.3804 -1.84787 0.504137
US.ACSO.BHZ.00 2018-12-31T02:44:45.40 10.0 negative automatic P 71 52.1719 -1.51381 0.525277
IU.WCI.BHZ.00 2018-12-31T02:44:42.62 10.0 negative automatic P 76 51.7507 -1.14892 0.538401
CN.SADO.BHZ. 2018-12-31T02:44:37.95 10.0 negative automatic P 65 51.093 -0.902034 0.542759
JP.JNU.BHZ. 2018-12-31T02:44:36.85 10.0 positive automatic P 274 50.7334 0.654383 0.256238
JP.JTU.BHZ. 2018-12-31T02:44:36.10 10.0 positive automatic P 276 50.567 1.23612 0.544976
CN.SCHQ.BHZ. 2018-12-31T02:44:33.25 10.0 positive automatic P 48 50.2241 0.907347 0.557048
US.MIAR.BHZ.00 2018-12-31T02:44:31.00 10.0 negative automatic P 84 50.2483 -1.47614 0.563274
DK.DY2G.BHZ.10 2018-12-31T02:44:27.95 10.0 negative automatic P 28 49.38 1.74082 0.564465
US.JCT.BHZ.00 2018-12-31T02:44:26.73 10.0 positive automatic P 93 49.6448 -1.23937 0
IU.SLBS.BHZ.00 2018-12-31T02:44:23.52 10.0 negative automatic P 108 49.1655 -0.825749 0.555114
JP.JMN.BHZ. 2018-12-31T02:44:21.05 10.0 positive automatic P 272 48.5698 1.32005 0.591726
DK.DBG.BHZ.00 2018-12-31T02:44:19.20 10.0 positive automatic P 13 48.2846 1.76125 0.569511
US.GLMI.BHZ.00 2018-12-31T02:44:18.10 10.0 positive automatic P 68 48.1677 1.49491 0.534961
US.HDIL.BHZ.00 2018-12-31T02:44:17.23 10.0 positive automatic P 75 48.4673 -1.65816 0.560145
US.WMOK.BHZ.00 2018-12-31T02:44:07.23 10.0 negative automatic P 88 47.1231 -1.291 0.563175
GE.DAG.BHZ. 2018-12-31T02:44:03.75 10.0 positive automatic P 11 46.3067 1.69848 0.616518
US.JFWS.BHZ.00 2018-12-31T02:44:00.53 10.0 positive automatic P 74 46.3614 -2.00336 0.608497
US.MNTX.BHZ.00 2018-12-31T02:43:55.00 10.0 positive automatic P 97 45.5404 -1.07154 0.629855
JP.JGF.BHZ. 2018-12-31T02:43:54.10 10.0 positive automatic P 271 45.2312 0.446048 0.593845
MX.HSIG.BHZ. 2018-12-31T02:43:46.53 10.0 negative automatic P 104 44.4145 -0.562981 0.620831
IU.MAJO.BHZ.00 2018-12-31T02:43:44.32 10.0 positive automatic P 271 44.081 -0.133117 0.61289
US.CBKS.BHZ.00 2018-12-31T02:43:41.75 10.0 positive automatic P 85 43.7343 0.0321419 0.654244
JP.JSD.BHZ. 2018-12-31T02:43:36.20 10.0 positive automatic P 273 43.0179 0.351467 0.674762
US.EYMN.BHZ.00 2018-12-31T02:43:31.18 10.0 positive automatic P 69 42.5191 -0.686322 0.660775
DK.NOR.BHZ. 2018-12-31T02:43:30.80 10.0 positive automatic P 7 42.2539 1.17007 0.673017
US.ECSD.BHZ.00 2018-12-31T02:43:28.38 10.0 negative automatic P 77 42.2894 -1.61872 0.712889
IU.TUC.BHZ.00 2018-12-31T02:43:26.77 10.0 negative automatic P 101 42.0152 -1.06504 0.693042
JP.JMM.BHZ. 2018-12-31T02:43:24.85 10.0 negative automatic P 270 41.6784 -0.0923924 0.715887
US.SDCO.BHZ.00 2018-12-31T02:43:21.25 10.0 positive automatic P 91 41.1498 0.216569 0.743604
DK.NEEM.BHZ.10 2018-12-31T02:43:21.85 10.0 positive automatic P 18 41.0605 1.5606 0.727597
US.AGMN.BHZ.00 2018-12-31T02:43:10.18 10.0 positive automatic P 71 39.9519 -0.579344 0.77658
US.MVCO.BHZ.00 2018-12-31T02:43:08.30 10.0 negative automatic P 94 39.8064 -1.56031 0.742813
JP.JTM.BHZ. 2018-12-31T02:43:07.35 10.0 positive automatic P 274 39.5678 -0.172139 0.756278
US.WUAZ.BHZ.00 2018-12-31T02:43:05.03 10.0 positive automatic P 98 39.3415 -0.864662 0.76984
CN.ULM.BHZ. 2018-12-31T02:43:00.85 10.0 positive automatic P 69 38.8501 -0.701023 0.634336
IU.RSSD.BHZ.00 2018-12-31T02:42:52.67 10.0 positive automatic P 82 37.8526 -0.809598 0.789918
II.PFO.BHZ.00 2018-12-31T02:42:52.82 10.0 positive automatic P 105 37.8688 -0.657206 0.771233
II.ERM.BHZ.00 2018-12-31T02:42:51.47 10.0 negative automatic P 273 37.5779 0.663629 0.795373
NN.PRN.HHZ. 2018-12-31T02:42:35.95 10.0 negative automatic P 99 35.9144 -0.942333 0.809537
CN.FCC.BHZ. 2018-12-31T02:42:34.68 10.0 positive automatic P 55 35.6725 0.102452 0.210944
US.DGMT.BHZ.00 2018-12-31T02:42:33.38 10.0 positive automatic P 76 35.2594 2.24096 0.768934
US.TPNV.BHZ.00 2018-12-31T02:42:32.98 10.0 negative automatic P 101 35.5578 -0.88033 0.826233
US.BW06.BHZ.00 2018-12-31T02:42:32.75 10.0 negative automatic P 88 35.5224 -0.909593 0.83679
US.DUG.BHZ.00 2018-12-31T02:42:30.80 10.0 positive automatic P 94 35.2978 -0.807946 0.768216
US.HWUT.BHZ.00 2018-12-31T02:42:29.83 10.0 positive automatic P 91 35.0988 -0.124611 0.845458
IU.YAK.BHZ.00 2018-12-31T02:42:27.27 10.0 positive automatic P 310 34.7872 0.299296 0.777787
US.AHID.BHZ.00 2018-12-31T02:42:26.73 10.0 negative automatic P 89 34.6364 0.741725 0.780624
US.RLMT.BHZ.00 2018-12-31T02:42:24.08 10.0 negative automatic P 84 34.2679 1.25723 0.842526
II.FFC.BHZ.00 2018-12-31T02:42:15.27 10.0 negative automatic P 65 33.4214 0.108338 0.880212
US.BOZ.BHZ.00 2018-12-31T02:42:08.73 10.0 negative automatic P 85 32.6396 0.175557 0.896652
US.EGMT.BHZ.00 2018-12-31T02:42:06.13 10.0 positive automatic P 80 32.37 0.0273842 0.861339
BK.CMB.BHZ.00 2018-12-31T02:42:06.47 10.0 negative automatic P 104 32.467 -0.416375 0.577293
US.HLID.BHZ.00 2018-12-31T02:42:04.03 10.0 negative automatic P 90 32.2402 -1.06087 0.905109
CN.RES.BHZ. 2018-12-31T02:42:03.85 10.0 positive automatic P 27 31.9621 1.51124 0.900302
US.WVOR.BHZ.00 2018-12-31T02:41:49.73 10.0 positive automatic P 96 30.5136 -0.0848671 0.299766
US.BMO.BHZ.00 2018-12-31T02:41:42.83 10.0 positive automatic P 91 29.807 -0.70665 0.930233
UW.BRAN.BHZ. 2018-12-31T02:41:37.43 10.0 positive automatic P 89 29.21 -0.815 0.91954
US.NEW.BHZ.00 2018-12-31T02:41:27.33 10.0 positive automatic P 85 28.0437 -0.480605 0.941176
US.HAWA.BHZ.00 2018-12-31T02:41:23.48 10.0 negative automatic P 90 27.6508 -0.750396 0.952381
IU.MA2.BHZ.00 2018-12-31T02:41:07.17 10.0 positive automatic P 300 25.5167 2.18101 0.952381
US.NLWA.BHZ.00 2018-12-31T02:40:58.23 10.0 positive automatic P 92 24.617 1.36187 0.930233
CN.SHB.BHZ. 2018-12-31T02:40:47.03 10.0 negative automatic P 87 23.5185 0.105899 0.941176
IU.PET.BHZ.00 2018-12-31T02:40:42.77 10.0 positive automatic P 282 23.024 1.03814 0.888889
CN.BBB.BHZ. 2018-12-31T02:40:15.10 10.0 negative automatic P 84 20.0176 -3.27038 0
IU.BILL.BHZ.00 2018-12-31T02:40:10.37 10.0 negative automatic P 324 19.6957 -4.5352 0
CN.INK.BHZ. 2018-12-31T02:39:53.98 10.0 negative automatic P 33 18.6978 -1.08933 0.941176
CN.DLBC.BHZ. 2018-12-31T02:39:44.65 10.0 positive automatic P 65 17.6606 1.49678 0.963855
US.WRAK.BHZ.00 2018-12-31T02:39:31.15 10.0 positive automatic P 73 16.576 1.67782 0.909091
AT.CRAG.BHZ. 2018-12-31T02:39:26.84 10.0 negative automatic P 76 16.2852 1.0536 0.970874
AT.SKAG.BHZ. 2018-12-31T02:39:10.02 10.0 positive automatic P 61 14.9631 1.3272 0.952381
US.EGAK.BHZ.00 2018-12-31T02:38:58.28 10.0 negative automatic P 38 14.2294 -0.555304 0.963855
IU.COLA.BHZ.00 2018-12-31T02:38:30.75 10.0 positive automatic P 29 12.1536 0.268494 0.952381
AK.ATKA.BHZ. 2018-12-31T02:37:30.99 10.0 positive automatic P 255 7.811 0.00718397 0.934579
II.KDAK.BHZ.00 2018-12-31T02:37:03.85 10.0 negative automatic P 57 5.8847 -0.71564 0.941176
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
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Type Description Link
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