Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 01-11-2019 and time 00:41:11 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 1.9 earthquake occured in region: 4 km E Norcia (PG), on

  • 31-10-2019 23:41:11 (UTC)
  • 01-11-2019 00:41:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7790, 13.1430 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 4 4957 4957
Cascia PG 13 3217 8174
Arquata del Tronto AP 13 1178 9352
Accumoli RI 13 667 10019
Castelsantangelo sul Nera MC 13 281 10300
Preci PG 14 724 11024
Montegallo AP 17 523 11547
Visso MC 18 1107 12654
Cittareale RI 18 482 13136
Ussita MC 18 444 13580
Poggiodomo PG 19 117 13697
Cerreto di Spoleto PG 19 1075 14772

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
94 Km W of Pescara (121014 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
97 Km NW of Chieti (51815 inhabitants)
98 Km SW of Ancona (100861 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 2019-10-31
23:41:11		 42.7792 13.1432 10 2020-02-28
16:42:14		 Bollettino Sismico Italiano INGV 74737251
Reviewed
Rev100 		ML 1.9 2019-10-31
23:41:11		 42.7807 13.1437 11 2019-10-31
23:51:08		 Sala Sismica INGV-Roma 73561711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-31 23:41:11 ± 0.06
Latitude 42.7792 ± 0.0027
Longitude 13.1432 ± 0.0049
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 74737251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 311
Semi-minor axis of confidence ellipse (meter) 206
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 33
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 52
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.05846
Epicentral distance of station farthest from the epicenter (degree) 0.73385
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 74737251
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-12-17 14:04:52

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 73561711
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-31 23:51:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SNTG.HHZ. 2019-10-31T23:41:29.31 0.6 undecidable manual S 343 55.3002 50 0.28 45
IV.FIAM.HHZ. 2019-10-31T23:41:29.94 0.6 undecidable manual S 182 56.6988 50 0.52 42
IV.OFFI.HHZ. 2019-10-31T23:41:28.80 0.6 undecidable manual S 68 47.4192 50 1.88 21
IV.GIGS.HHZ. 2019-10-31T23:41:27.36 0.6 undecidable manual S 136 50.4162 50 -0.36 44
IV.ASSB.HHZ. 2019-10-31T23:41:27.34 0.6 undecidable manual S 307 49.0176 50 -0.02 48
IV.CESX.HHZ. 2019-10-31T23:41:27.79 0.6 undecidable manual S 248 49.1175 50 0.4 44
IV.MOMA.HHZ. 2019-10-31T23:41:27.07 0.6 undecidable manual S 274 46.7199 50 0.32 45
IV.ARVD.HHZ. 2019-10-31T23:41:25.58 0.6 undecidable manual P 348 81.4518 50 -0.11 44
IV.T0110.HHZ. 2019-10-31T23:41:25.49 0.1 undecidable manual P 139 79.9644 50 0.02 90
IV.SAP2.EHZ. 2019-10-31T23:41:25.91 0.6 undecidable manual S 30 40.9257 50 0.72 40
IV.ARRO.EHZ. 2019-10-31T23:41:24.48 0.3 undecidable manual S 234 37.9287 50 0.08 72
IV.TERO.HHZ. 2019-10-31T23:41:24.94 0.6 undecidable manual S 115 41.3253 50 -0.38 45
IV.FAGN.HHZ. 2019-10-31T23:41:24.14 0.1 undecidable manual P 148 67.377 50 0.61 80
IV.CSP1.EHZ. 2019-10-31T23:41:23.30 0.6 undecidable manual S 8 35.0427 50 -0.33 46
IV.CAMP.HHZ. 2019-10-31T23:41:23.34 0.3 undecidable manual S 141 34.6431 50 -0.17 71
IV.MF5.EHZ. 2019-10-31T23:41:23.89 0.3 undecidable manual S 48 34.6431 50 0.38 68
IV.GUMA.HHZ. 2019-10-31T23:41:23.80 0.6 undecidable manual S 26 35.1426 50 0.15 48
IV.ATCC.EHZ. 2019-10-31T23:41:22.51 1.0 undecidable manual P 318 60.7947 50 -0.01 23
IV.CESI.HHZ. 2019-10-31T23:41:22.41 0.3 undecidable manual S 322 31.6461 50 -0.32 69
IV.EL6.EHZ. 2019-10-31T23:41:22.34 0.3 undecidable manual P 357 61.0944 50 -0.22 67
IV.RM33.EHZ. 2019-10-31T23:41:22.34 0.6 undecidable manual S 169 30.5472 50 -0.08 49
IV.SNTG.HHZ. 2019-10-31T23:41:21.42 0.6 undecidable manual P 343 55.3002 50 -0.24 45
IV.OFFI.HHZ. 2019-10-31T23:41:21.08 0.1 undecidable manual P 68 47.4192 50 0.63 82
IV.FDMO.HHZ. 2019-10-31T23:41:21.26 0.6 undecidable manual S 351 28.9488 50 -0.73 41
IV.FIAM.HHZ. 2019-10-31T23:41:21.72 0.3 undecidable manual P 182 56.6988 50 -0.17 69
IV.MNTT.EHZ. 2019-10-31T23:41:21.10 0.3 undecidable manual P 49 48.3183 50 0.51 65
IV.MOMA.HHZ. 2019-10-31T23:41:20.33 0.1 undecidable manual P 274 46.7199 50 -0.02 96
IV.GIGS.HHZ. 2019-10-31T23:41:20.43 0.3 undecidable manual P 136 50.4162 50 -0.48 65
IV.ASSB.HHZ. 2019-10-31T23:41:20.49 0.3 undecidable manual P 307 49.0176 50 -0.21 69
IV.CESX.HHZ. 2019-10-31T23:41:20.82 0.1 undecidable manual P 248 49.1175 50 0.1 94
IV.SMA1.EHZ. 2019-10-31T23:41:19.97 0.6 undecidable manual S 136 22.755 114 -0.27 48
IV.MMO1.EHZ. 2019-10-31T23:41:19.09 0.3 undecidable manual S 48 20.0688 117 -0.29 71
IV.MTRA.EHZ. 2019-10-31T23:41:19.46 0.6 undecidable manual S 97 20.7681 116 -0.16 49
IV.TERO.HHZ. 2019-10-31T23:41:19.12 0.1 undecidable manual P 115 41.3253 50 -0.4 89
IV.LNSS.HHZ. 2019-10-31T23:41:19.96 0.6 undecidable manual S 203 21.2676 115 0.19 49
IV.SAP2.EHZ. 2019-10-31T23:41:19.68 0.6 undecidable manual P 30 40.9257 50 0.23 46
IV.MC2.EHZ. 2019-10-31T23:41:18.10 0.6 undecidable manual S 14 15.1737 124 0.18 49
IV.GUMA.HHZ. 2019-10-31T23:41:18.58 0.3 undecidable manual P 26 35.1426 50 0.02 73
IV.CSP1.EHZ. 2019-10-31T23:41:18.15 0.1 undecidable manual P 8 35.0427 50 -0.4 91
IV.ARRO.EHZ. 2019-10-31T23:41:18.91 0.1 undecidable manual P 234 37.9287 50 -0.09 96
IV.CAMP.HHZ. 2019-10-31T23:41:18.27 0.1 positive manual P 141 34.6431 50 -0.2 94
IV.MF5.EHZ. 2019-10-31T23:41:18.65 0.3 undecidable manual P 48 34.6431 50 0.17 71
IV.RM33.EHZ. 2019-10-31T23:41:17.81 0.1 undecidable manual P 169 30.5472 50 -0.04 98
IV.FDMO.HHZ. 2019-10-31T23:41:17.26 0.1 negative manual P 351 28.9488 50 -0.34 93
IV.CESI.HHZ. 2019-10-31T23:41:17.82 0.1 undecidable manual P 322 31.6461 50 -0.2 95
IV.LNSS.HHZ. 2019-10-31T23:41:16.45 0.1 undecidable manual P 203 21.2676 115 0.13 98
IV.SMA1.EHZ. 2019-10-31T23:41:16.56 0.1 positive manual P 136 22.755 114 -0.03 100
IV.MTRA.EHZ. 2019-10-31T23:41:16.12 0.1 positive manual P 97 20.7681 116 -0.11 99
IV.MC2.EHZ. 2019-10-31T23:41:15.41 0.1 undecidable manual P 14 15.1737 124 0.16 99
IV.MMO1.EHZ. 2019-10-31T23:41:15.97 0.1 positive manual P 48 20.0688 117 -0.13 98
IV.NRCA.HNZ. 2019-10-31T23:41:15.86 0.3 undecidable manual S 339 6.4935 147 0.09 76
IV.NRCA.HNZ. 2019-10-31T23:41:14.27 0.1 negative manual P 339 6.4935 147 0.26 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNE. ML:2.5 0.005308509499999999 0.1664 AML other m 2019-10-31T23:41:16.03
IV.NRCA.HNN. ML:2.5 0.0049562885 0.1152 AML other m 2019-10-31T23:41:16.47
IV.NRCA.HHN. ML:2.6 0.0055408775 0.128 AML other m 2019-10-31T23:41:16.46
IV.NRCA.HHE. ML:2.6 0.005544728499999999 0.1536 AML other m 2019-10-31T23:41:16.02
IV.MTRA.EHE. ML:1.9 0.00061336335 0.2048 AML other m 2019-10-31T23:41:19.86
IV.MTRA.EHN. ML:1.9 0.0006450423000000001 0.1792 AML other m 2019-10-31T23:41:20.31
IV.MTRA.HNE. ML:1.9 0.0006060359 0.2048 AML other m 2019-10-31T23:41:19.85
IV.MTRA.HNN. ML:2.0 0.0006482984000000001 0.1792 AML other m 2019-10-31T23:41:20.31
IV.LNSS.HNE. ML:2.0 0.0007615821 0.128 AML other m 2019-10-31T23:41:21.20
IV.LNSS.HHE. ML:2.1 0.00084108305 0.128 AML other m 2019-10-31T23:41:21.20
IV.LNSS.HNN. ML:1.9 0.0006270722 0.1536 AML other m 2019-10-31T23:41:21.03
IV.LNSS.HHN. ML:2.0 0.00065324425 0.1408 AML other m 2019-10-31T23:41:21.03
IV.SMA1.EHN. ML:2.0 0.0006807724 0.2176 AML other m 2019-10-31T23:41:20.37
IV.SMA1.EHE. ML:2.1 0.0007991279500000001 0.1536 AML other m 2019-10-31T23:41:21.22
IV.FDMO.HHE. ML:1.6 0.00020865435 0.3072 AML other m 2019-10-31T23:41:22.04
IV.FDMO.HHN. ML:1.6 0.00019388515 0.1408 AML other m 2019-10-31T23:41:24.24
IV.RM33.HNE. ML:1.6 0.0002005657 0.128 AML other m 2019-10-31T23:41:24.22
IV.RM33.EHE. ML:1.7 0.00021972985000000002 0.1408 AML other m 2019-10-31T23:41:24.22
IV.RM33.EHN. ML:1.7 0.0002475539 0.1152 AML other m 2019-10-31T23:41:23.23
IV.RM33.HNN. ML:1.8 0.00027137944999999997 0.1408 AML other m 2019-10-31T23:41:23.29
IV.CESI.HNE. ML:1.9 0.00038142985 0.192 AML other m 2019-10-31T23:41:22.54
IV.CESI.HNN. ML:2.2 0.00084387075 0.2304 AML other m 2019-10-31T23:41:22.94
IV.CESI.HHE. ML:1.9 0.0003774068 0.1792 AML other m 2019-10-31T23:41:22.62
IV.CESI.HHN. ML:2.3 0.0008584892500000001 0.2432 AML other m 2019-10-31T23:41:22.92
IV.CSP1.EHN. ML:1.7 0.000194223415 0.32 AML other m 2019-10-31T23:41:23.86
IV.CSP1.EHE. ML:1.6 0.00016884775 0.1408 AML other m 2019-10-31T23:41:24.83
IV.CAMP.HHE. ML:1.6 0.00015660734999999997 0.3456 AML other m 2019-10-31T23:41:23.65
IV.CAMP.HHN. ML:1.5 0.00013011273 0.5376 AML other m 2019-10-31T23:41:23.64
IV.GUMA.HHE. ML:2.3 0.0007957825 0.3072 AML other m 2019-10-31T23:41:24.48
IV.TERO.HHE. ML:2.0 0.00032212045 0.1664 AML other m 2019-10-31T23:41:26.07
IV.TERO.HHN. ML:2.0 0.0002937204 0.0768 AML other m 2019-10-31T23:41:25.40
IV.MOMA.HHE. ML:2.3 0.0006262607 0.1792 AML other m 2019-10-31T23:41:28.46
IV.MOMA.HHN. ML:1.9 0.0002093862 0.2688 AML other m 2019-10-31T23:41:29.60
IV.MOMA.HNE. ML:2.3 0.0005913713 0.192 AML other m 2019-10-31T23:41:28.56
IV.GIGS.HHN. ML:1.3 0.000053228705 0.2432 AML other m 2019-10-31T23:41:29.93
IV.GIGS.HHE. ML:1.3 0.000050653325 0.0768 AML other m 2019-10-31T23:41:28.29
IV.ASSB.HHE. ML:1.8 0.00016779165 0.1792 AML other m 2019-10-31T23:41:28.99
IV.ASSB.HHN. ML:1.9 0.0002357328 0.1408 AML other m 2019-10-31T23:41:29.24
IV.CESX.HHN. ML:1.7 0.00012741635 0.4352 AML other m 2019-10-31T23:41:32.13
IV.CESX.HHE. ML:1.6 0.00010976963500000001 0.2432 AML other m 2019-10-31T23:41:32.07
IV.OFFI.HHN. ML:2.2 0.0003959104 0.32 AML other m 2019-10-31T23:41:30.82
IV.OFFI.HHE. ML:2.1 0.00034148425 0.256 AML other m 2019-10-31T23:41:31.62
IV.SNTG.HHE. ML:1.4 0.00005897132 0.2048 AML other m 2019-10-31T23:41:30.53
IV.SNTG.HHN. ML:1.5 0.00007900412000000001 0.2432 AML other m 2019-10-31T23:41:30.35
IV.FIAM.HHE. ML:1.1 0.000030432065 0.2944 AML other m 2019-10-31T23:41:30.59
IV.FIAM.HHN. ML:1.2 0.0000348446 0.3968 AML other m 2019-10-31T23:41:30.00
IV.EL6.EHN. ML:1.7 0.000101803 0.3328 AML other m 2019-10-31T23:41:41.62
IV.EL6.EHE. ML:1.7 0.00010547825 0.3328 AML other m 2019-10-31T23:41:33.50
IV.ATCC.EHE. ML:1.8 0.00013962445000000002 0.1792 AML other m 2019-10-31T23:41:32.84
IV.ATCC.EHN. ML:1.8 0.00012026711500000001 0.1792 AML other m 2019-10-31T23:41:32.73
IV.FAGN.HHN. ML:2.0 0.00016337705 0.2688 AML other m 2019-10-31T23:41:36.27
IV.FAGN.HHE. ML:1.9 0.000130683575 0.5632 AML other m 2019-10-31T23:41:41.39
IV.T0110.HHE. ML:1.7 0.00007500312000000001 0.4352 AML other m 2019-10-31T23:41:45.13
IV.T0110.HHN. ML:1.8 0.00008560316 0.4096 AML other m 2019-10-31T23:41:39.12
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