Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 17-12-2017 and time 01:35:06 (Italy) in region 2 km SE Norcia (PG)

A magnitude ML 1.9 earthquake occured in region: 2 km SE Norcia (PG), on

  • 17-12-2017 00:35:06 (UTC)
  • 17-12-2017 01:35:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7810, 13.1020 at 10 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Norcia PG 2 4957 4957
Cascia PG 10 3217 8174
Preci PG 12 724 8898
Castelsantangelo sul Nera MC 13 281 9179
Accumoli RI 15 667 9846
Poggiodomo PG 16 117 9963
Cerreto di Spoleto PG 16 1075 11038
Arquata del Tronto AP 16 1178 12216
Visso MC 17 1107 13323
Ussita MC 19 444 13767
Cittareale RI 19 482 14249
Sellano PG 19 1079 15328
Monteleone di Spoleto PG 19 599 15927
Vallo di Nera PG 20 364 16291

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SE of Foligno (57155 inhabitants)
44 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 inhabitants)
99 Km SW of Ancona (100861 inhabitants)
100 Km W of Chieti (51815 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.9 2017-12-17
00:35:06		 42.7807 13.1023 10 2019-03-25
14:09:23		 Bollettino Sismico Italiano INGV 62621521
Reviewed
Rev100 		ML 2.0 2017-12-17
00:35:06		 42.783 13.1053 10 2017-12-17
00:42:12		 Sala Sismica INGV-Roma 52631671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-12-17 00:35:06 ± 0.04
Latitude 42.7807 ± 0.0018
Longitude 13.1023 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 62621521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 300
Semi-minor axis of confidence ellipse (meter) 129
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 81
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 46
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.74194
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 52631671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-12-17 00:42:12

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 62621521
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-10-31 14:43:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MOMA.HHZ. 2017-12-17T00:35:21.66 0.6 undecidable manual S 274 43.4232 50 0.57 42
IV.TERO.HHZ. 2017-12-17T00:35:21.19 0.6 undecidable manual S 113 44.5221 50 -0.19 46
IV.PF6.EHN. 2017-12-17T00:35:20.05 0.6 undecidable manual S 11 40.3263 50 -0.22 46
IV.T0110.HHZ. 2017-12-17T00:35:20.88 0.3 undecidable manual P 138 82.3509 50 -0.17 64
IV.MF5.EHZ. 2017-12-17T00:35:20.04 0.6 undecidable manual S 52 37.0296 50 0.64 41
IV.T1247.HHZ. 2017-12-17T00:35:20.53 0.6 undecidable manual S 157 40.8258 50 0.11 47
IV.CAMP.HHZ. 2017-12-17T00:35:19.33 0.3 undecidable manual S 137 36.9297 50 -0.03 72
IV.GUMA.HHZ. 2017-12-17T00:35:19.66 0.3 undecidable manual S 31 36.5412 50 0.39 67
IV.CSP1.EHZ. 2017-12-17T00:35:18.85 0.6 undecidable manual S 14 35.5422 50 -0.14 47
IV.ARRO.EHZ. 2017-12-17T00:35:18.93 0.6 undecidable manual S 231 35.4423 50 -0.03 48
IV.CING.HHZ. 2017-12-17T00:35:18.46 0.1 undecidable manual P 6 66.378 50 -0.14 89
IV.CESI.HHZ. 2017-12-17T00:35:17.26 0.3 undecidable manual S 327 29.6481 50 -0.15 71
IV.EL6.EHZ. 2017-12-17T00:35:17.64 0.1 undecidable manual P 360 60.8946 50 -0.1 90
IV.ATCC.EHZ. 2017-12-17T00:35:17.31 0.3 undecidable manual P 320 58.497 50 -0.07 69
IV.RM33.EHZ. 2017-12-17T00:35:17.90 0.6 undecidable manual S 163 31.4463 50 -0.01 48
IV.SNTG.HHZ. 2017-12-17T00:35:16.46 0.3 undecidable manual P 346 54.2013 50 -0.26 66
IV.OFFI.HHZ. 2017-12-17T00:35:16.87 0.1 undecidable manual P 70 50.4162 50 0.74 77
IV.MNTP.HNZ. 2017-12-17T00:35:16.42 0.3 undecidable manual P 37 49.5171 50 0.43 65
IV.FIAM.HHZ. 2017-12-17T00:35:16.93 0.6 undecidable manual P 179 56.8986 50 -0.2 45
IV.SMA1.EHZ. 2017-12-17T00:35:16.26 0.3 undecidable manual S 131 25.2525 111 0.05 73
IV.MMO1.EHZ. 2017-12-17T00:35:15.02 0.3 undecidable manual S 54 22.5552 114 -0.31 69
IV.T1299.EHZ. 2017-12-17T00:35:15.40 0.3 undecidable manual S 138 21.867 114 0.27 70
IV.MOMA.HHZ. 2017-12-17T00:35:15.12 0.1 undecidable manual P 274 43.4232 50 0.07 94
IV.MTRA.EHZ. 2017-12-17T00:35:15.58 0.3 undecidable manual S 96 24.0537 112 -0.26 70
IV.CESX.HHZ. 2017-12-17T00:35:15.48 0.3 undecidable manual P 246 46.1205 50 0 71
IV.MF5.EHZ. 2017-12-17T00:35:14.27 0.1 undecidable manual P 52 37.0296 50 0.2 92
IV.TERO.HHZ. 2017-12-17T00:35:14.92 0.1 undecidable manual P 113 44.5221 50 -0.3 89
IV.T1247.HHZ. 2017-12-17T00:35:14.59 0.3 undecidable manual P 157 40.8258 50 -0.07 71
IV.FEMA.HNE. 2017-12-17T00:35:14.52 0.6 undecidable manual S 348 20.5683 116 -0.2 48
IV.GUMA.HHZ. 2017-12-17T00:35:14.09 0.1 undecidable manual P 31 36.5412 50 0.09 95
IV.PF6.EHN. 2017-12-17T00:35:14.32 0.1 undecidable manual P 11 40.3263 50 -0.26 91
IV.LNSS.HHZ. 2017-12-17T00:35:14.90 0.3 undecidable manual S 194 20.3685 116 0.25 71
IV.ARRO.EHZ. 2017-12-17T00:35:13.70 0.1 undecidable manual P 231 35.4423 50 -0.12 94
IV.CAMP.HHZ. 2017-12-17T00:35:13.97 0.1 undecidable manual P 137 36.9297 50 -0.08 95
IV.MC2.EHZ. 2017-12-17T00:35:13.51 0.3 undecidable manual S 26 16.1727 122 0.14 73
IV.CSP1.EHZ. 2017-12-17T00:35:13.71 0.1 undecidable manual P 14 35.5422 50 -0.12 94
IV.RM33.EHZ. 2017-12-17T00:35:12.95 0.1 undecidable manual P 163 31.4463 50 -0.26 92
IV.SMA1.EHZ. 2017-12-17T00:35:12.17 0.1 undecidable manual P 131 25.2525 111 -0.06 97
IV.CESI.HHZ. 2017-12-17T00:35:12.75 0.1 undecidable manual P 327 29.6481 50 -0.18 94
IV.MTRA.EHZ. 2017-12-17T00:35:11.85 0.1 negative manual P 96 24.0537 112 -0.17 95
IV.FEMA.HNE. 2017-12-17T00:35:11.80 0.1 undecidable manual P 348 20.5683 116 0.43 91
IV.LNSS.HHZ. 2017-12-17T00:35:11.33 0.1 undecidable manual P 194 20.3685 116 0 99
IV.MMO1.EHZ. 2017-12-17T00:35:11.59 0.1 undecidable manual P 54 22.5552 114 -0.13 96
IV.T1299.EHZ. 2017-12-17T00:35:11.81 0.1 undecidable manual P 138 21.867 114 0.2 95
IV.MC2.EHZ. 2017-12-17T00:35:10.79 0.1 undecidable manual P 26 16.1727 122 0.2 96
IV.NRCA.HNZ. 2017-12-17T00:35:10.50 0.3 undecidable manual S 9 5.994 149 -0.31 71
IV.NRCA.HNZ. 2017-12-17T00:35:09.19 0.1 negative manual P 9 5.994 149 0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:2.5 0.005712447 0.11 AML other m 2017-12-17T00:35:10.64
IV.NRCA.HNN. ML:2.6 0.007201878500000001 0.14 AML other m 2017-12-17T00:35:10.64
IV.NRCA.HHN. ML:2.7 0.0077257595 0.14 AML other m 2017-12-17T00:35:10.63
IV.NRCA.HHE. ML:2.5 0.005875676999999999 0.12 AML other m 2017-12-17T00:35:10.64
OB.GAVE.EHE. ML:0.0 0.0019897575 0.18 AML other m 2017-12-17T00:35:14.72
OB.GAVE.EHN. ML:0.0 0.00198964 0.16 AML other m 2017-12-17T00:35:15.22
OB.GAVE.HNE. ML:0.0 0.0017863030000000002 0.19 AML other m 2017-12-17T00:35:14.71
OB.GAVE.HNN. ML:0.0 0.000671641 0.17 AML other m 2017-12-17T00:35:15.22
IV.LNSS.HHE. ML:2.0 0.0008433710999999999 0.12 AML other m 2017-12-17T00:35:15.52
IV.LNSS.HHN. ML:2.2 0.00123859755 0.14 AML other m 2017-12-17T00:35:15.44
IV.T1299.EHE. ML:1.8 0.00042893335 0.18 AML other m 2017-12-17T00:35:16.26
IV.T1299.EHN. ML:1.9 0.00050737045 0.2 AML other m 2017-12-17T00:35:16.06
IV.T1299.HNE. ML:1.8 0.00041499235 0.19 AML other m 2017-12-17T00:35:16.26
IV.MTRA.EHE. ML:2.1 0.0007631098 0.18 AML other m 2017-12-17T00:35:15.94
IV.MTRA.EHN. ML:2.2 0.0009749550999999999 0.24 AML other m 2017-12-17T00:35:15.92
IV.MTRA.HNE. ML:2.1 0.0007693031500000001 0.19 AML other m 2017-12-17T00:35:15.94
IV.MTRA.HNN. ML:2.2 0.00101978035 0.29 AML other m 2017-12-17T00:35:15.92
IV.SMA1.EHN. ML:2.0 0.0005664713 0.18 AML other m 2017-12-17T00:35:16.96
IV.SMA1.EHE. ML:2.0 0.0006103444999999999 0.8 AML other m 2017-12-17T00:35:19.66
IV.CESI.HHN. ML:1.9 0.00042791365000000004 0.2 AML other m 2017-12-17T00:35:17.54
IV.CESI.HHE. ML:1.6 0.00020663745 0.22 AML other m 2017-12-17T00:35:17.98
IV.RM33.EHE. ML:1.8 0.0002804102 0.18 AML other m 2017-12-17T00:35:18.88
IV.RM33.HNE. ML:1.8 0.00027895655 0.19 AML other m 2017-12-17T00:35:18.87
IV.RM33.HNN. ML:1.8 0.00028609885 0.12 AML other m 2017-12-17T00:35:18.47
IV.RM33.EHN. ML:1.8 0.00028353265 0.12 AML other m 2017-12-17T00:35:18.48
IV.ARRO.EHE. ML:1.7 0.00019966719999999998 0.2 AML other m 2017-12-17T00:35:20.51
IV.ARRO.EHN. ML:1.7 0.0002043724 0.22 AML other m 2017-12-17T00:35:22.46
IV.CSP1.EHE. ML:1.9 0.0002964758 0.22 AML other m 2017-12-17T00:35:19.62
IV.CSP1.EHN. ML:1.3 0.00008152452 0.2 AML other m 2017-12-17T00:35:19.74
IV.CAMP.HHE. ML:1.4 0.00008646144 0.22 AML other m 2017-12-17T00:35:19.52
IV.CAMP.HHN. ML:1.2 0.000066735795 0.52 AML other m 2017-12-17T00:35:24.41
IV.GUMA.HNE. ML:2.3 0.0007785271 0.39 AML other m 2017-12-17T00:35:22.63
IV.GUMA.HHE. ML:2.3 0.0007002149 0.38 AML other m 2017-12-17T00:35:22.63
IV.GUMA.HNN. ML:2.2 0.0006556651499999999 0.44 AML other m 2017-12-17T00:35:22.70
IV.GUMA.HHN. ML:2.2 0.0006829859000000001 0.32 AML other m 2017-12-17T00:35:22.69
IV.MF5.EHE. ML:1.9 0.00032536215 0.36 AML other m 2017-12-17T00:35:20.84
IV.MF5.EHN. ML:2.0 0.00038428905 0.24 AML other m 2017-12-17T00:35:20.82
IV.TERO.HHN. ML:1.7 0.00015168445 0.08 AML other m 2017-12-17T00:35:22.24
IV.TERO.HHE. ML:1.6 0.00013333032 0.1 AML other m 2017-12-17T00:35:22.40
IV.TERO.HNN. ML:1.4 0.00006794732500000001 0.09 AML other m 2017-12-17T00:35:22.20
IV.MOMA.HNE. ML:2.0 0.00034659260000000005 0.28 AML other m 2017-12-17T00:35:23.88
IV.MOMA.HHE. ML:2.0 0.0003239421 0.26 AML other m 2017-12-17T00:35:23.87
IV.MOMA.HHN. ML:2.0 0.00028828169999999995 0.18 AML other m 2017-12-17T00:35:23.33
IV.ASSB.HHN. ML:1.6 0.00011882432000000001 0.12 AML other m 2017-12-17T00:35:23.98
IV.ASSB.HHE. ML:1.7 0.000147379145 0.2 AML other m 2017-12-17T00:35:23.55
IV.CESX.HHE. ML:1.6 0.00011369154 0.38 AML other m 2017-12-17T00:35:23.67
IV.CESX.HHN. ML:1.6 0.00012367612 0.26 AML other m 2017-12-17T00:35:26.45
IV.SNTG.HHE. ML:1.4 0.0000555848745 0.14 AML other m 2017-12-17T00:35:25.03
IV.SNTG.HHN. ML:1.5 0.00007436828 0.2 AML other m 2017-12-17T00:35:26.30
IV.FIAM.HHE. ML:1.5 0.000067600295 0.16 AML other m 2017-12-17T00:35:26.10
IV.ATCC.EHE. ML:1.7 0.00010785395 0.16 AML other m 2017-12-17T00:35:27.09
IV.ATCC.EHN. ML:1.6 0.00008420502 0.28 AML other m 2017-12-17T00:35:27.24
IV.EL6.EHE. ML:1.8 0.00011669879999999999 0.16 AML other m 2017-12-17T00:35:27.06
IV.CING.HHE. ML:1.5 0.00006136878 0.14 AML other m 2017-12-17T00:35:29.73
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
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