Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 20-11-2019 and time 11:43:19 (Italy) in region 4 km NE Norcia (PG)

A magnitude ML 1.5 earthquake occured in region: 4 km NE Norcia (PG), on

  • 20-11-2019 10:43:19 (UTC)
  • 20-11-2019 11:43:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8110, 13.1300 at 9 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
Castelsantangelo sul Nera MC 10 281 5238
Preci PG 11 724 5962
Cascia PG 14 3217 9179
Visso MC 14 1107 10286
Arquata del Tronto AP 14 1178 11464
Ussita MC 15 444 11908
Accumoli RI 16 667 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 17 1075 14173
Sellano PG 19 1079 15252
Montemonaco AP 19 604 15856
Poggiodomo PG 19 117 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
50 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
90 Km W of Montesilvano (53738 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
95 Km SW of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
97 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 1.5 2019-11-20
10:43:19		 42.8107 13.1302 9 2020-02-28
16:42:18		 Bollettino Sismico Italiano INGV 75356981
Reviewed
Rev100 		ML 1.5 2019-11-20
10:43:19		 42.817 13.1242 9 2019-11-20
10:49:42		 Sala Sismica INGV-Roma 73932821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-11-20 10:43:19 ± 0.05
Latitude 42.8107 ± 0.0027
Longitude 13.1302 ± 0.0049
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 75356981

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 391
Semi-minor axis of confidence ellipse (meter) 113
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 71
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 43
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) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.51891
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 19
Type of magnitude ML
Reference to an origin 75356981
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-07 09:58:07

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 73932821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-11-20 10:49:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2019-11-20T10:43:38.26 0.6 undecidable manual S 358 57.5979 50 0.39 44
IV.ATCC.EHZ. 2019-11-20T10:43:38.27 0.6 undecidable manual S 316 57.498 50 0.42 43
IV.GIGS.HHZ. 2019-11-20T10:43:36.11 0.6 undecidable manual S 138 53.6019 50 -0.71 40
IV.MOMA.HHZ. 2019-11-20T10:43:35.13 0.6 undecidable manual S 269 45.621 50 0.46 44
IV.TERO.HHZ. 2019-11-20T10:43:33.76 0.6 undecidable manual S 118 43.9227 50 -0.45 44
IV.SAP2.EHE. 2019-11-20T10:43:33.55 0.6 undecidable manual S 34 38.5281 50 0.77 40
IV.GUMA.HNN. 2019-11-20T10:43:31.46 0.6 undecidable manual S 31 32.5452 50 0.28 47
IV.MF5.EHZ. 2019-11-20T10:43:31.99 0.6 undecidable manual S 54 33.2445 50 0.62 43
IV.PF6.EHN. 2019-11-20T10:43:31.75 0.6 undecidable manual S 8 36.6411 50 -0.54 44
IV.EL6.EHZ. 2019-11-20T10:43:30.02 0.3 undecidable manual P 358 57.5979 50 -0.12 69
IV.ATCC.EHZ. 2019-11-20T10:43:30.03 0.3 undecidable manual P 316 57.498 50 -0.1 70
IV.CSP1.EHZ. 2019-11-20T10:43:30.52 0.6 undecidable manual S 11 31.746 50 -0.46 45
IV.SMA1.EHZ. 2019-11-20T10:43:29.02 0.6 undecidable manual S 140 26.0517 109 -0.13 49
IV.CESI.HHZ. 2019-11-20T10:43:29.51 0.6 undecidable manual S 320 28.2495 108 -0.37 46
IV.GIGS.HHZ. 2019-11-20T10:43:29.28 0.6 undecidable manual P 138 53.6019 50 -0.25 45
IV.SNTG.HHZ. 2019-11-20T10:43:29.26 0.3 undecidable manual P 343 51.6039 50 0.04 71
IV.FDMO.HHZ. 2019-11-20T10:43:28.56 0.6 undecidable manual S 352 25.2525 110 -0.34 47
IV.MOMA.HHZ. 2019-11-20T10:43:28.42 0.3 undecidable manual P 269 45.621 50 0.13 71
IV.T1299.HNN. 2019-11-20T10:43:28.53 0.6 undecidable manual S 148 23.1546 111 0.32 47
IV.LNSS.HNZ. 2019-11-20T10:43:28.67 0.6 undecidable manual S 198 24.1536 110 0.13 49
IV.MTRA.EHZ. 2019-11-20T10:43:27.99 0.6 undecidable manual S 105 22.4553 112 0 50
IV.TERO.HHZ. 2019-11-20T10:43:27.78 0.3 undecidable manual P 118 43.9227 50 -0.25 69
IT.MTCL.HGZ. 2019-11-20T10:43:27.80 0.6 undecidable manual S 332 22.9548 111 -0.33 47
IV.SAP2.EHE. 2019-11-20T10:43:27.32 0.3 undecidable manual P 34 38.5281 50 0.12 72
IV.PF6.EHN. 2019-11-20T10:43:26.61 0.1 undecidable manual P 8 36.6411 50 -0.31 93
IV.GUMA.HNN. 2019-11-20T10:43:26.40 0.1 undecidable manual P 31 32.5452 50 0.12 97
IV.FEMA.HNE. 2019-11-20T10:43:26.51 0.6 undecidable manual S 339 18.0708 117 -0.06 50
IV.MMO1.EHZ. 2019-11-20T10:43:26.67 0.6 undecidable manual S 58 18.7701 116 -0.14 49
IV.MF5.EHZ. 2019-11-20T10:43:26.62 0.1 undecidable manual P 54 33.2445 50 0.24 95
IV.CSP1.EHZ. 2019-11-20T10:43:25.97 0.1 positive manual P 11 31.746 50 -0.19 96
IV.SMA1.EHZ. 2019-11-20T10:43:25.04 0.1 undecidable manual P 140 26.0517 109 -0.07 99
IV.CESI.HHZ. 2019-11-20T10:43:25.37 0.1 positive manual P 320 28.2495 108 -0.16 97
IV.MTRA.EHZ. 2019-11-20T10:43:24.37 0.1 undecidable manual P 105 22.4553 112 -0.07 100
IT.MTCL.HGZ. 2019-11-20T10:43:24.44 0.3 undecidable manual P 332 22.9548 111 -0.08 75
IV.MC2.EHZ. 2019-11-20T10:43:24.96 0.6 undecidable manual S 23 12.1767 127 0.13 50
IV.FDMO.HHZ. 2019-11-20T10:43:24.83 0.1 undecidable manual P 352 25.2525 110 -0.13 98
IV.T1299.HNN. 2019-11-20T10:43:24.73 0.6 undecidable manual P 148 23.1546 111 0.17 49
IV.LNSS.HNZ. 2019-11-20T10:43:24.83 0.3 undecidable manual P 198 24.1536 110 0.08 74
IV.MMO1.EHZ. 2019-11-20T10:43:23.84 0.1 undecidable manual P 58 18.7701 116 0.09 100
IV.FEMA.HNE. 2019-11-20T10:43:23.84 0.3 undecidable manual P 339 18.0708 117 0.22 73
IV.NRCA.HNZ. 2019-11-20T10:43:22.80 0.3 undecidable manual S 333 2.8971 162 -0.06 77
IV.MC2.EHZ. 2019-11-20T10:43:22.95 0.1 undecidable manual P 23 12.1767 127 0.34 96
IV.NRCA.HNZ. 2019-11-20T10:43:21.70 0.1 undecidable manual P 333 2.8971 162 0.22 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.5 0.0002105575 0.1792 AML other m 2019-11-20T10:43:28.41
IV.MTRA.HNN. ML:1.5 0.0002118067 0.1664 AML other m 2019-11-20T10:43:28.41
IV.FDMO.HHE. ML:1.3 0.00011502629 0.1024 AML other m 2019-11-20T10:43:28.83
IV.FDMO.HHN. ML:1.4 0.00016221954999999998 0.2432 AML other m 2019-11-20T10:43:28.00
IV.MTRA.HNE. ML:1.6 0.00024459565 0.2112 AML other m 2019-11-20T10:43:29.07
IV.MTRA.EHE. ML:1.6 0.0002464033 0.0832 AML other m 2019-11-20T10:43:29.39
IV.CESI.HHN. ML:1.6 0.00020666589999999998 0.0832 AML other m 2019-11-20T10:43:30.00
IV.CESI.HHE. ML:1.5 0.000174041925 0.064 AML other m 2019-11-20T10:43:30.07
IV.CESI.HNN. ML:1.6 0.00020914485999999998 0.2368 AML other m 2019-11-20T10:43:30.07
IV.CSP1.EHN. ML:1.5 0.00014024005000000002 0.2176 AML other m 2019-11-20T10:43:31.08
IV.SMA1.EHE. ML:1.4 0.00014137995000000002 0.3008 AML other m 2019-11-20T10:43:31.98
IV.CSP1.EHE. ML:1.2 0.00008148857000000002 0.3392 AML other m 2019-11-20T10:43:33.50
IV.SMA1.EHN. ML:1.3 0.0001257516 0.3968 AML other m 2019-11-20T10:43:33.83
IV.TERO.HHN. ML:1.3 0.00006356168500000001 0.0576 AML other m 2019-11-20T10:43:34.36
IV.TERO.HHE. ML:1.3 0.00006435707 0.064 AML other m 2019-11-20T10:43:34.60
IV.MOMA.HHE. ML:1.6 0.00013093973 0.2368 AML other m 2019-11-20T10:43:36.36
IV.MOMA.HHN. ML:1.4 0.00006870495 0.16 AML other m 2019-11-20T10:43:36.52
IV.ATCC.EHN. ML:1.4 0.00006020093 1.6768 AML other m 2019-11-20T10:43:38.33
IV.ATCC.EHE. ML:1.4 0.00005032831 0.4608 AML other m 2019-11-20T10:43:40.04
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