Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 13-12-2019 and time 12:42:25 (UTC) in region 5 km SE Norcia (PG)

A magnitude ML 1.3 earthquake occured in region: 5 km SE Norcia (PG), on

  • 13-12-2019 12:42:25 (UTC)
  • 13-12-2019 13:42:25 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7520, 13.1250 at 8 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 5 4957 4957
Cascia PG 10 3217 8174
Accumoli RI 12 667 8841
Arquata del Tronto AP 14 1178 10019
Cittareale RI 15 482 10501
Preci PG 16 724 11225
Poggiodomo PG 16 117 11342
Castelsantangelo sul Nera MC 16 281 11623
Monteleone di Spoleto PG 18 599 12222
Cerreto di Spoleto PG 19 1075 13297
Amatrice RI 19 2657 15954
Montegallo AP 20 523 16477

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km SE of Foligno (57155 inhabitants)
44 Km E of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
50 Km NW of L'Aquila (69753 inhabitants)
72 Km SE of Perugia (166134 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km E of Viterbo (67173 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
95 Km W of Pescara (121014 inhabitants)
96 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
Reviewed
Rev100 		ML 1.3 2019-12-13
12:42:25		 42.7517 13.125 8 2019-12-13
12:52:00		 Sala Sismica INGV-Roma 74593851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-13 12:42:25 ± 0.1
Latitude 42.7517 ± 0.0036
Longitude 13.1250 ± 0.0086
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74593851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 616
Semi-minor axis of confidence ellipse (meter) 272
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
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) 0.08184
Epicentral distance of station farthest from the epicenter (degree) 0.37502
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 13
Type of magnitude ML
Reference to an origin 74593851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-13 12:52:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2019-12-13T12:42:39.62 0.6 undecidable manual S 10 38.2284 50 0.39 60
IV.CESI.HHZ. 2019-12-13T12:42:38.31 0.6 undecidable manual S 328 33.3444 104 0.44 60
IV.FDMO.HHZ. 2019-12-13T12:42:37.55 0.6 undecidable manual S 354 31.746 105 0.21 63
IV.RM33.HNZ. 2019-12-13T12:42:35.84 0.6 undecidable manual S 165 27.9498 107 -0.22 63
IV.MF5.EHZ. 2019-12-13T12:42:34.30 0.3 undecidable manual P 46 37.7289 50 0.76 79
IV.MTRA.HNZ. 2019-12-13T12:42:34.18 0.6 undecidable manual S 88 22.1556 111 0.02 66
IV.MMO1.EHZ. 2019-12-13T12:42:34.21 0.6 undecidable manual S 45 23.1546 110 -0.29 63
IV.TERO.HHZ. 2019-12-13T12:42:33.50 0.3 undecidable manual P 110 41.625 50 -0.63 83
IV.MC2.EHZ. 2019-12-13T12:42:33.30 0.6 undecidable manual S 16 18.4704 114 0.32 63
IV.T1299.HNZ. 2019-12-13T12:42:33.48 0.6 undecidable manual S 135 18.2706 115 0.56 59
IV.CSP1.EHZ. 2019-12-13T12:42:33.31 0.3 undecidable manual P 10 38.2284 50 -0.31 91
IV.FDMO.HHZ. 2019-12-13T12:42:32.08 0.3 undecidable manual P 354 31.746 105 -0.45 89
IV.LNSS.HHZ. 2019-12-13T12:42:32.96 0.6 undecidable manual S 203 17.871 115 0.16 65
IV.CESI.HHZ. 2019-12-13T12:42:32.60 0.3 undecidable manual P 328 33.3444 104 -0.23 94
IV.RM33.HNZ. 2019-12-13T12:42:31.61 0.3 undecidable manual P 165 27.9498 107 -0.17 95
IV.MMO1.EHZ. 2019-12-13T12:42:30.78 0.3 undecidable manual P 45 23.1546 110 -0.11 98
IV.MC2.EHZ. 2019-12-13T12:42:30.05 0.3 undecidable manual P 16 18.4704 114 0.04 100
IV.T1299.HNZ. 2019-12-13T12:42:30.10 0.3 undecidable manual P 135 18.2706 115 0.12 98
IV.NRCA.HNZ. 2019-12-13T12:42:30.00 0.6 undecidable manual S 355 9.0798 132 -0.24 65
IV.MTRA.HNZ. 2019-12-13T12:42:30.75 0.3 undecidable manual P 88 22.1556 111 0.06 99
IV.LNSS.HHZ. 2019-12-13T12:42:30.09 0.3 undecidable manual P 203 17.871 115 0.18 97
IV.NRCA.HNZ. 2019-12-13T12:42:28.32 0.3 undecidable manual P 355 9.0798 132 -0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LNSS.HHE. ML:1.3 0.00017758405 0.256 AML other m 2019-12-13T12:42:35.69
IV.LNSS.HHN. ML:1.4 0.00021088155 0.3392 AML other m 2019-12-13T12:42:34.87
IV.LNSS.HNE. ML:1.3 0.00018322365000000002 0.2304 AML other m 2019-12-13T12:42:34.85
IV.LNSS.HNN. ML:1.4 0.00020911525 0.4096 AML other m 2019-12-13T12:42:36.55
IV.RM33.EHE. ML:1.0 0.000056703865 0.16 AML other m 2019-12-13T12:42:37.88
IV.RM33.EHN. ML:1.2 0.00008500105499999999 0.32 AML other m 2019-12-13T12:42:37.80
IV.RM33.HNE. ML:1.5 0.000155865735 0.4864 AML other m 2019-12-13T12:42:37.28
IV.FDMO.HHE. ML:1.1 0.000062281455 0.3008 AML other m 2019-12-13T12:42:39.95
IV.FDMO.HHN. ML:1.2 0.000070289395 0.2176 AML other m 2019-12-13T12:42:38.69
IV.CESI.HNE. ML:1.5 0.00012503305 0.3648 AML other m 2019-12-13T12:42:38.75
IV.CESI.HHE. ML:1.2 0.000064129685 0.2368 AML other m 2019-12-13T12:42:39.72
IV.CESI.HHN. ML:1.3 0.000085320235 0.1984 AML other m 2019-12-13T12:42:40.87
IV.CSP1.EHN. ML:1.3 0.000072216385 0.4224 AML other m 2019-12-13T12:42:41.56
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