Earthquake with magnitude of ML 1.8 on date 03-12-2020 and time 23:00:37 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 1.8 earthquake occured in region: 4 km E Norcia (PG), on

  • 03-12-2020 22:00:37 (UTC)
  • 03-12-2020 23:00:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.81, 13.14 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.

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
Castelsantangelo sul Nera MC 10 281 5238
Preci PG 11 724 5962
Arquata del Tronto AP 14 1178 7140
Cascia PG 14 3217 10357
Visso MC 15 1107 11464
Accumoli RI 15 667 12131
Ussita MC 16 444 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 18 1075 14173
Montemonaco AP 19 604 14777
Poggiodomo PG 19 117 14894
Sellano PG 19 1079 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km W of Pescara (121014 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
99 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 2020-12-03
22:00:37
42.81 13.14 10 2021-02-26
14:56:09
Bollettino Sismico Italiano INGV 85194911
Reviewed
Rev100
ML 1.8 2020-12-03
22:00:37
42.8 13.13 10 2020-12-03
22:50:13
Sala Sismica INGV-Roma 85184141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-03 22:00:37 ± 0.05
Latitude 42.81 ± 0.00
Longitude 13.14 ± 0.00
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 85194911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 349
Semi-minor axis of confidence ellipse (meter) 219
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 78
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 57
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) 0.03148
Epicentral distance of station farthest from the epicenter (degree) 0.70597
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 29
Type of magnitude ML
Reference to an origin 85194911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-28 11:21:27

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 32
Type of magnitude ML
Reference to an origin 85184141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-03 22:50:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-12-03T22:01:01.95 0.6 undecidable manual S 349 0.706 50 0.73 36
IV.EL6.EHZ. 2020-12-03T22:00:56.16 0.6 undecidable manual S 357 0.5234 50 0.34 43
IV.SNTG.HHZ. 2020-12-03T22:00:54.31 0.6 undecidable manual S 342 0.4712 50 0.06 46
IV.CESX.HHE. 2020-12-03T22:00:53.97 0.6 undecidable manual S 244 0.4488 50 0.37 43
IV.ASSB.HHZ. 2020-12-03T22:00:53.01 0.6 undecidable manual S 304 0.4218 50 0.22 45
IV.MOMA.HHZ. 2020-12-03T22:00:53.14 0.6 undecidable manual S 270 0.4146 50 0.55 41
IV.ARVD.HHZ. 2020-12-03T22:00:51.04 0.3 undecidable manual P 349 0.706 50 -0.16 64
IV.MDAR.HNN. 2020-12-03T22:00:51.62 0.3 undecidable manual S 1 0.3867 50 -0.14 69
IV.TERO.HHZ. 2020-12-03T22:00:51.29 0.3 undecidable manual S 118 0.3894 50 -0.56 62
IV.SAP2.EHZ. 2020-12-03T22:00:51.43 0.3 undecidable manual S 33 0.3489 50 0.8 57
IV.ARRO.EHZ. 2020-12-03T22:00:50.35 0.6 undecidable manual S 230 0.3534 50 -0.43 43
IV.SSFR.HHZ. 2020-12-03T22:00:50.89 0.3 undecidable manual P 338 0.6808 50 0.12 65
IV.MML1.HNE. 2020-12-03T22:00:49.82 0.3 undecidable manual S 339 0.3301 50 -0.26 68
IV.PF6.EHN. 2020-12-03T22:00:49.85 0.1 undecidable manual S 7 0.3345 50 -0.36 88
IV.MF5.EHN. 2020-12-03T22:00:49.60 0.6 undecidable manual S 52 0.2986 50 0.44 44
IV.GUMA.HHZ. 2020-12-03T22:00:49.33 0.1 undecidable manual S 30 0.295 50 0.28 91
IV.CAMP.HHZ. 2020-12-03T22:00:49.81 0.6 undecidable manual S 143 0.3363 50 -0.46 43
IV.CSP1.EHZ. 2020-12-03T22:00:48.60 0.1 undecidable manual S 10 0.2905 50 -0.3 90
IV.MNTT.EHZ. 2020-12-03T22:00:47.07 0.1 undecidable manual P 53 0.4227 50 0.71 77
IV.OFFI.HHZ. 2020-12-03T22:00:47.12 0.3 undecidable manual P 72 0.4227 50 0.75 57
IV.SNTG.HHZ. 2020-12-03T22:00:47.00 0.1 undecidable manual P 342 0.4712 50 -0.18 89
IV.CESI.HHZ. 2020-12-03T22:00:47.75 0.1 undecidable manual S 320 0.2608 50 -0.29 91
IV.EL6.EHZ. 2020-12-03T22:00:47.95 0.1 undecidable manual P 357 0.5234 50 -0.13 89
IV.LNSS.HHZ. 2020-12-03T22:00:46.39 0.6 undecidable manual S 199 0.2149 112 -0.04 48
IV.ASSB.HHZ. 2020-12-03T22:00:46.47 0.3 undecidable manual P 304 0.4218 50 0.13 68
IV.MOMA.HHZ. 2020-12-03T22:00:46.73 0.1 undecidable manual P 270 0.4146 50 0.51 84
IV.CESX.HHE. 2020-12-03T22:00:46.98 0.3 undecidable manual P 244 0.4488 50 0.18 67
IV.SMA1.EHZ. 2020-12-03T22:00:46.77 0.6 undecidable manual S 140 0.2284 111 -0.15 47
IV.T1299.HNZ. 2020-12-03T22:00:46.24 0.6 undecidable manual S 148 0.2023 113 0.24 46
IV.FDMO.HHZ. 2020-12-03T22:00:46.61 0.6 undecidable manual S 351 0.2329 110 -0.48 44
IV.MTRA.EHZ. 2020-12-03T22:00:45.46 0.6 undecidable manual S 104 0.1979 114 -0.36 45
IV.ARRO.EHZ. 2020-12-03T22:00:45.11 0.3 undecidable manual P 230 0.3534 50 -0.07 70
IT.MTCL.HGZ. 2020-12-03T22:00:45.92 0.6 undecidable manual S 332 0.2122 112 -0.44 44
IV.MDAR.HNN. 2020-12-03T22:00:45.39 0.3 undecidable manual P 1 0.3867 50 -0.35 66
IV.SAP2.EHZ. 2020-12-03T22:00:45.28 0.1 undecidable manual P 33 0.3489 50 0.19 91
IV.TERO.HHZ. 2020-12-03T22:00:45.59 0.1 undecidable manual P 118 0.3894 50 -0.19 90
IV.GUMA.HHZ. 2020-12-03T22:00:44.24 0.1 positive manual P 30 0.295 50 0.07 95
IV.FEMA.HNZ. 2020-12-03T22:00:44.71 0.6 undecidable manual S 338 0.1682 117 -0.09 48
IV.CAMP.HHZ. 2020-12-03T22:00:44.58 0.1 positive manual P 143 0.3363 50 -0.3 89
IV.PF6.EHN. 2020-12-03T22:00:44.57 0.1 negative manual P 7 0.3345 50 -0.28 90
IV.MF5.EHN. 2020-12-03T22:00:44.43 0.1 undecidable manual P 52 0.2986 50 0.19 92
IV.MMO1.EHZ. 2020-12-03T22:00:44.56 0.1 undecidable manual S 56 0.1682 117 -0.24 93
IV.MML1.HNE. 2020-12-03T22:00:44.51 0.1 undecidable manual P 339 0.3301 50 -0.26 90
IV.CSP1.EHZ. 2020-12-03T22:00:43.84 0.1 positive manual P 10 0.2905 50 -0.25 91
IV.CESI.HHZ. 2020-12-03T22:00:43.45 0.1 positive manual P 320 0.2608 50 -0.14 94
IV.MC2.EHZ. 2020-12-03T22:00:43.32 0.1 undecidable manual S 20 0.1124 128 0.34 92
IV.LNSS.HHZ. 2020-12-03T22:00:42.74 0.1 positive manual P 199 0.2149 112 0.08 96
IV.T1299.HNZ. 2020-12-03T22:00:42.61 0.1 positive manual P 148 0.2023 113 0.2 94
IV.SMA1.EHZ. 2020-12-03T22:00:42.87 0.1 undecidable manual P 140 0.2284 111 -0.08 95
IV.MTRA.EHZ. 2020-12-03T22:00:42.27 0.1 undecidable manual P 104 0.1979 114 -0.04 97
IV.FDMO.HHZ. 2020-12-03T22:00:42.84 0.1 positive manual P 351 0.2329 110 -0.2 93
IT.MTCL.HGZ. 2020-12-03T22:00:42.49 0.1 undecidable manual P 332 0.2122 112 -0.13 95
IV.NRCA.HNZ. 2020-12-03T22:00:41.02 0.1 undecidable manual S 331 0.0315 160 -0.04 100
IV.FEMA.HNZ. 2020-12-03T22:00:41.83 0.1 undecidable manual P 338 0.1682 117 0.11 96
IV.MMO1.EHZ. 2020-12-03T22:00:41.67 0.1 positive manual P 56 0.1682 117 -0.05 97
IV.MC2.EHZ. 2020-12-03T22:00:40.95 0.1 positive manual P 20 0.1124 128 0.28 94
IV.NRCA.HNZ. 2020-12-03T22:00:39.83 0.1 undecidable manual P 331 0.0315 160 0.26 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.6 0.008275 0.12 AML other m 2020-12-03T22:00:41.22
IV.NRCA.HNN. ML:2.6 0.0076 0.12 AML other m 2020-12-03T22:00:41.22
IV.NRCA.HNE. ML:2.3 0.003885 0.16 AML other m 2020-12-03T22:00:41.29
IV.NRCA.HHE. ML:2.3 0.00393 0.16 AML other m 2020-12-03T22:00:41.63
IV.MTRA.EHE. ML:1.4 0.00015360155 0.2432 AML other m 2020-12-03T22:00:45.95
IV.MTRA.HNE. ML:1.4 0.00017125748 0.2432 AML other m 2020-12-03T22:00:45.82
IV.MTRA.EHN. ML:1.3 0.00013719505 0.8704 AML other m 2020-12-03T22:00:46.11
IV.MTRA.HNN. ML:1.4 0.0001862532 0.6784 AML other m 2020-12-03T22:00:46.28
IV.LNSS.HHN. ML:2 0.0006721369 0.2048 AML other m 2020-12-03T22:00:46.74
IV.LNSS.HNN. ML:2 0.00067668385 0.1664 AML other m 2020-12-03T22:00:46.75
IV.FDMO.HHN. ML:1.6 0.0002305057 0.3584 AML other m 2020-12-03T22:00:46.89
IV.FDMO.HHE. ML:1.5 0.0001729873 0.3712 AML other m 2020-12-03T22:00:46.91
IV.LNSS.HHE. ML:2.2 0.001075 0.12 AML other m 2020-12-03T22:00:47.02
IV.LNSS.HNE. ML:2.2 0.001015 0.12 AML other m 2020-12-03T22:00:47.08
IV.CESI.HHE. ML:1.5 0.00017571605 0.1408 AML other m 2020-12-03T22:00:47.85
IV.CESI.HHN. ML:1.8 0.000278 0.14 AML other m 2020-12-03T22:00:48.08
IV.CSP1.EHN. ML:2 0.00053839615 0.4096 AML other m 2020-12-03T22:00:48.83
IV.CSP1.EHE. ML:1.9 0.0003695006 0.1408 AML other m 2020-12-03T22:00:49.18
IV.GUMA.HHN. ML:2.2 0.000732 1.7 AML other m 2020-12-03T22:00:50.14
IV.GUMA.HNE. ML:2 0.0004381087 0.2944 AML other m 2020-12-03T22:00:50.15
IV.ARRO.EHE. ML:1.4 7.929557E-5 0.3968 AML other m 2020-12-03T22:00:51.19
IV.SAP2.EHE. ML:1.9 0.0002745 0.16 AML other m 2020-12-03T22:00:51.82
IV.SAP2.EHN. ML:2.8 0.00224 0.18 AML other m 2020-12-03T22:00:51.90
IV.MOMA.HHN. ML:1.2 4.3797415E-5 0.1536 AML other m 2020-12-03T22:00:53.59
IV.MOMA.HHE. ML:1.2 4.789802E-5 0.2432 AML other m 2020-12-03T22:00:54.04
IV.EL6.EHE. ML:1.6 9.027116E-5 0.128 AML other m 2020-12-03T22:00:56.58
IV.EL6.EHN. ML:1.8 0.00014510985 0.1408 AML other m 2020-12-03T22:00:56.00
IV.SSFR.HHE. ML:1.4 4.163175E-5 0.256 AML other m 2020-12-03T22:01:02.00
IV.SSFR.HHN. ML:1.5 4.737351E-5 0.3072 AML other m 2020-12-03T22:01:02.66
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