Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 27-11-2020 and time 11:04:25 (UTC) in region 3 km E Norcia (PG)

A magnitude ML 1.8 earthquake occured in region: 3 km E Norcia (PG), on

  • 27-11-2020 11:04:25 (UTC)
  • 27-11-2020 12:04:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7890, 13.1310 at 8 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 3 4957 4957
Castelsantangelo sul Nera MC 12 281 5238
Cascia PG 12 3217 8455
Preci PG 13 724 9179
Arquata del Tronto AP 14 1178 10357
Accumoli RI 14 667 11024
Visso MC 16 1107 12131
Ussita MC 17 444 12575
Montegallo AP 18 523 13098
Cerreto di Spoleto PG 18 1075 14173
Poggiodomo PG 18 117 14290
Cittareale RI 19 482 14772

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
70 Km SE of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km W of Pescara (121014 inhabitants)
96 Km N of Tivoli (56533 inhabitants)
97 Km SW of Ancona (100861 inhabitants)
98 Km NW 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 1.8 2020-11-27
11:04:25		 42.7892 13.1313 9 2021-02-26
14:56:09		 Bollettino Sismico Italiano INGV 85152071
Reviewed
Rev100 		ML 1.9 2020-11-27
11:04:25		 42.7873 13.1328 8 2020-11-27
11:14:02		 Sala Sismica INGV-Roma 85049371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-27 11:04:25 ± 0.05
Latitude 42.7892 ± 0.0018
Longitude 13.1313 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85152071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 265
Semi-minor axis of confidence ellipse (meter) 184
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 78
Number of defining phases 78
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.04587
Epicentral distance of station farthest from the epicenter (degree) 0.88223
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 40
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 27
Type of magnitude ML
Reference to an origin 85152071
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-02 11:41:13

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 51
Type of magnitude ML
Reference to an origin 85049371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-27 11:14:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MPAG.EHZ. 2020-11-27T11:04:55.14 0.3 undecidable manual S 342 97.9242 50 0.19 62
IV.T0110.HHZ. 2020-11-27T11:04:50.90 0.1 undecidable manual S 139 81.4518 50 0.34 83
IV.MURB.HHZ. 2020-11-27T11:04:48.17 0.1 undecidable manual S 317 71.9724 50 0.14 88
IT.MMP1.HGE. 2020-11-27T11:04:47.33 0.3 undecidable manual S 208 67.5768 50 0.47 62
IV.ATCC.EHZ. 2020-11-27T11:04:45.15 0.1 undecidable manual S 318 59.2962 50 0.5 83
IV.EL6.EHZ. 2020-11-27T11:04:44.97 0.1 undecidable manual S 358 59.9955 50 0.15 90
IV.SNTG.HHZ. 2020-11-27T11:04:43.25 0.1 undecidable manual S 343 53.9016 50 0.04 93
IV.CESX.HHZ. 2020-11-27T11:04:42.40 0.1 undecidable manual S 246 48.7179 50 0.58 82
IV.GAG1.HNE. 2020-11-27T11:04:42.54 0.3 undecidable manual S 354 50.1165 50 0.36 65
IV.MPAG.EHZ. 2020-11-27T11:04:42.79 0.3 undecidable manual P 342 97.9242 50 0.16 62
IV.MOMA.HHZ. 2020-11-27T11:04:41.28 0.1 undecidable manual S 272 45.7209 50 0.26 90
IV.ASSB.HHZ. 2020-11-27T11:04:41.18 0.1 undecidable manual S 306 47.619 50 -0.34 88
IV.SSM1.HNE. 2020-11-27T11:04:41.80 0.3 undecidable manual S 4 48.9177 50 -0.07 70
IV.MNTT.EHZ. 2020-11-27T11:04:41.99 0.1 undecidable manual S 51 48.3183 50 0.27 89
IT.GNU.HGE. 2020-11-27T11:04:41.13 0.3 undecidable manual S 272 45.7209 50 0.12 69
IV.FIU1.HNZ. 2020-11-27T11:04:41.56 0.3 undecidable manual S 340 47.2194 50 0.15 69
IV.SEF1.HNN. 2020-11-27T11:04:40.08 0.3 undecidable manual S 339 42.4242 50 -0.05 71
IV.T0110.HHZ. 2020-11-27T11:04:40.21 0.1 positive manual P 139 81.4518 50 0.12 87
IV.MDAR.HNN. 2020-11-27T11:04:40.76 0.1 undecidable manual S 1 44.8218 50 0 95
IV.SAP2.EHZ. 2020-11-27T11:04:40.30 0.1 undecidable manual S 32 40.4262 50 0.69 80
IV.TERO.HHZ. 2020-11-27T11:04:39.53 0.1 undecidable manual S 115 42.7239 50 -0.68 80
IT.FOPC.HGN. 2020-11-27T11:04:39.75 0.3 undecidable manual S 300 40.1265 50 0.22 69
IV.MURB.HHZ. 2020-11-27T11:04:38.61 0.1 undecidable manual P 317 71.9724 50 -0.02 90
IV.MF5.EHZ. 2020-11-27T11:04:38.76 0.1 undecidable manual S 50 34.6431 50 0.71 80
IT.MMP1.HGE. 2020-11-27T11:04:38.00 0.3 undecidable manual P 208 67.5768 50 0.05 68
IV.PF6.EHN. 2020-11-27T11:04:38.72 0.1 undecidable manual S 7 39.0276 50 -0.51 86
IV.ARRO.EHZ. 2020-11-27T11:04:38.76 0.1 undecidable manual S 232 37.8288 50 -0.15 93
IV.TRTR.HHZ. 2020-11-27T11:04:38.24 0.1 undecidable manual P 88 63.6918 50 0.88 71
IV.MML1.HNE. 2020-11-27T11:04:38.48 0.1 undecidable manual S 340 38.2284 50 -0.54 85
IV.GUMA.HHZ. 2020-11-27T11:04:38.13 0.1 undecidable manual S 29 34.5432 50 0.09 95
IV.CSP1.EHZ. 2020-11-27T11:04:37.52 0.1 undecidable manual S 10 34.1436 50 -0.4 89
IV.CAMP.HHZ. 2020-11-27T11:04:37.76 0.1 undecidable manual S 141 36.1416 50 -0.68 81
IV.CESI.HHZ. 2020-11-27T11:04:36.49 0.1 undecidable manual S 322 30.2475 106 -0.19 94
IV.EL6.EHZ. 2020-11-27T11:04:36.52 0.1 negative manual P 358 59.9955 50 -0.26 88
IV.ATCC.EHZ. 2020-11-27T11:04:36.56 0.1 negative manual P 318 59.2962 50 -0.12 90
IV.MNTT.EHZ. 2020-11-27T11:04:35.51 0.1 undecidable manual P 51 48.3183 50 0.52 84
IV.FIU1.HNZ. 2020-11-27T11:04:35.53 0.3 undecidable manual P 340 47.2194 50 0.73 58
IV.SNTG.HHZ. 2020-11-27T11:04:35.55 0.1 undecidable manual P 343 53.9016 50 -0.3 88
IV.OFFI.HHZ. 2020-11-27T11:04:35.37 0.1 undecidable manual P 70 47.9187 50 0.46 86
IV.GAG1.HNE. 2020-11-27T11:04:35.75 0.3 undecidable manual P 354 50.1165 50 0.5 64
IV.FDMO.HHZ. 2020-11-27T11:04:35.57 0.1 undecidable manual S 353 27.6501 107 -0.27 93
IV.ASSB.HHZ. 2020-11-27T11:04:34.50 0.1 undecidable manual P 306 47.619 50 -0.37 88
IV.MDAR.HNN. 2020-11-27T11:04:34.17 0.1 undecidable manual P 1 44.8218 50 -0.26 90
IV.SSM1.HNE. 2020-11-27T11:04:34.94 0.3 undecidable manual P 4 48.9177 50 -0.13 69
IV.LNSS.HNZ. 2020-11-27T11:04:34.24 0.1 undecidable manual S 200 21.9669 111 0.28 93
IT.GNU.HGE. 2020-11-27T11:04:34.80 0.3 undecidable manual P 272 45.7209 50 0.22 68
IT.FOPC.HGN. 2020-11-27T11:04:34.03 0.3 undecidable manual P 300 40.1265 50 0.31 67
IV.SMA1.EHZ. 2020-11-27T11:04:34.25 0.1 undecidable manual S 137 24.1536 109 -0.44 90
IV.T1299.HNZ. 2020-11-27T11:04:34.05 0.1 undecidable manual S 144 21.1677 112 0.36 92
IV.CESX.HHZ. 2020-11-27T11:04:34.79 0.1 undecidable manual P 246 48.7179 50 -0.25 90
IT.MTCL.HGZ. 2020-11-27T11:04:34.82 0.1 undecidable manual S 335 25.1526 109 -0.18 95
IV.MOMA.HHZ. 2020-11-27T11:04:34.41 0.1 undecidable manual P 272 45.7209 50 -0.17 92
IV.TERO.HHZ. 2020-11-27T11:04:33.59 0.1 undecidable manual P 115 42.7239 50 -0.53 85
IV.SAP2.EHZ. 2020-11-27T11:04:33.85 0.1 positive manual P 32 40.4262 50 0.08 94
IV.PF6.EHN. 2020-11-27T11:04:33.08 0.1 undecidable manual P 7 39.0276 50 -0.47 87
IV.SEF1.HNN. 2020-11-27T11:04:33.76 0.3 undecidable manual P 339 42.4242 50 -0.31 67
IV.FEMA.HNZ. 2020-11-27T11:04:33.41 0.1 undecidable manual S 341 20.2686 113 -0.02 99
IV.MMO1.EHZ. 2020-11-27T11:04:33.32 0.1 undecidable manual S 52 20.0688 113 -0.03 99
IV.ARRO.EHZ. 2020-11-27T11:04:33.02 0.1 positive manual P 232 37.8288 50 -0.35 89
IV.MML1.HNE. 2020-11-27T11:04:33.01 0.1 positive manual P 340 38.2284 50 -0.42 88
IV.MTRA.EHZ. 2020-11-27T11:04:33.76 0.1 undecidable manual S 99 21.867 111 -0.18 95
IV.CAMP.HHZ. 2020-11-27T11:04:32.56 0.1 positive manual P 141 36.1416 50 -0.54 86
IV.GUMA.HHZ. 2020-11-27T11:04:32.79 0.1 positive manual P 29 34.5432 50 -0.07 95
IV.MC2.EHZ. 2020-11-27T11:04:32.10 0.1 undecidable manual S 19 14.3745 121 0.52 90
IV.MF5.EHZ. 2020-11-27T11:04:32.86 0.1 positive manual P 50 34.6431 50 -0.01 97
IV.CSP1.EHZ. 2020-11-27T11:04:32.38 0.1 undecidable manual P 10 34.1436 50 -0.41 89
IV.FDMO.HHZ. 2020-11-27T11:04:31.37 0.1 positive manual P 353 27.6501 107 -0.22 94
IV.CESI.HHZ. 2020-11-27T11:04:31.87 0.1 positive manual P 322 30.2475 106 -0.21 93
IT.MTCL.HGZ. 2020-11-27T11:04:30.96 0.1 negative manual P 335 25.1526 109 -0.14 96
IV.FEMA.HNZ. 2020-11-27T11:04:30.27 0.1 undecidable manual P 341 20.2686 113 0.07 98
IV.MMO1.EHZ. 2020-11-27T11:04:30.08 0.1 positive manual P 52 20.0688 113 -0.08 98
IV.MTRA.EHZ. 2020-11-27T11:04:30.41 0.1 undecidable manual P 99 21.867 111 -0.09 97
IV.LNSS.HNZ. 2020-11-27T11:04:30.62 0.1 positive manual P 200 21.9669 111 0.11 97
IV.T1299.HNZ. 2020-11-27T11:04:30.55 0.1 positive manual P 144 21.1677 112 0.2 95
IV.SMA1.EHZ. 2020-11-27T11:04:30.85 0.1 undecidable manual P 137 24.1536 109 -0.08 97
IV.NRCA.HNZ. 2020-11-27T11:04:29.33 0.1 undecidable manual S 344 5.0949 149 0.09 100
IV.MC2.EHZ. 2020-11-27T11:04:29.43 0.1 positive manual P 19 14.3745 121 0.3 94
IV.NRCA.HNZ. 2020-11-27T11:04:28.08 0.1 negative manual P 344 5.0949 149 0.3 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSP1.EHE. ML:2.4 0.0010364999999999999 0.28 AML other m 2020-11-27T11:04:37.87
IV.CAMP.HHE. ML:1.5 0.00011879999999999999 0.58 AML other m 2020-11-27T11:04:38.31
IV.CAMP.HHN. ML:1.3 0.00008505000000000001 0.86 AML other m 2020-11-27T11:04:38.03
IV.GUMA.HHE. ML:2.4 0.001002 0.26 AML other m 2020-11-27T11:04:38.84
IV.GUMA.HHN. ML:2.3 0.0007685 0.44 AML other m 2020-11-27T11:04:39.34
IV.SAP2.EHN. ML:2.8 0.002355 0.22 AML other m 2020-11-27T11:04:40.87
IV.MOMA.HHN. ML:1.8 0.00019350000000000001 0.26 AML other m 2020-11-27T11:04:42.07
IV.MOMA.HHE. ML:2.0 0.000268 0.16 AML other m 2020-11-27T11:04:42.66
IV.MOMA.HNE. ML:2.0 0.00027749999999999997 0.18 AML other m 2020-11-27T11:04:42.75
IV.SNTG.HHN. ML:1.6 0.0000949 0.12 AML other m 2020-11-27T11:04:44.09
IV.CESX.HHE. ML:1.6 0.0001075 0.54 AML other m 2020-11-27T11:04:45.35
IV.MPAG.EHE. ML:1.6 0.000042800000000000004 0.28 AML other m 2020-11-27T11:04:57.47
IV.FDMO.HHE. ML:1.8 0.00031713025 0.2176 AML other m 2020-11-27T11:04:35.78
IV.FDMO.HHN. ML:1.8 0.0003312319 0.4032 AML other m 2020-11-27T11:04:35.73
IV.CESI.HHN. ML:1.9 0.00040002380000000006 0.2816 AML other m 2020-11-27T11:04:36.61
IV.CESI.HHE. ML:1.6 0.00019542905 0.5568 AML other m 2020-11-27T11:04:37.00
IV.CSP1.EHN. ML:2.4 0.0009899167 0.384 AML other m 2020-11-27T11:04:37.66
IV.GUMA.HNE. ML:2.3 0.0008067515499999999 0.2752 AML other m 2020-11-27T11:04:38.86
IV.SAP2.EHE. ML:1.8 0.00024597405 0.1792 AML other m 2020-11-27T11:04:40.44
IV.ASSB.HHE. ML:1.7 0.00013754329999999997 0.3392 AML other m 2020-11-27T11:04:42.09
IV.ASSB.HHN. ML:1.6 0.00010407917999999999 0.0832 AML other m 2020-11-27T11:04:41.98
IV.SNTG.HHE. ML:1.7 0.00012859124999999998 0.576 AML other m 2020-11-27T11:04:43.96
IV.EL6.EHN. ML:2.2 0.00031648605 0.4608 AML other m 2020-11-27T11:04:45.89
IV.EL6.EHE. ML:2.1 0.0002355518 0.384 AML other m 2020-11-27T11:04:45.53
IV.ATCC.EHN. ML:1.6 0.00008054161 0.736 AML other m 2020-11-27T11:04:45.30
IV.ATCC.EHE. ML:1.5 0.000062765345 0.2624 AML other m 2020-11-27T11:04:45.49
IV.MPAG.EHN. ML:1.6 0.00004181505 0.3008 AML other m 2020-11-27T11:04:57.32
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