Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 03-12-2019 and time 09:31:04 (Italy) in region 6 km E Norcia (PG)

A magnitude ML 1.4 earthquake occured in region: 6 km E Norcia (PG), on

  • 03-12-2019 08:31:04 (UTC)
  • 03-12-2019 09:31:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7770, 13.1600 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 6 4957 4957
Arquata del Tronto AP 11 1178 6135
Accumoli RI 12 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Cascia PG 14 3217 10300
Preci PG 15 724 11024
Montegallo AP 16 523 11547
Cittareale RI 18 482 12029
Visso MC 18 1107 13136
Ussita MC 19 444 13580
Montemonaco AP 19 604 14184
Amatrice RI 20 2657 16841
Poggiodomo PG 20 117 16958

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
48 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
93 Km W of Pescara (121014 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
95 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 1.4 2019-12-03
08:31:04		 42.7773 13.1598 11 2020-02-28
16:42:20		 Bollettino Sismico Italiano INGV 75765311
Reviewed
Rev100 		ML 1.4 2019-12-03
08:31:04		 42.7782 13.165 10 2019-12-03
08:43:19		 Sala Sismica INGV-Roma 74271901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-03 08:31:04 ± 0.08
Latitude 42.7773 ± 0.0045
Longitude 13.1598 ± 0.0061
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75765311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 456
Semi-minor axis of confidence ellipse (meter) 327
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 93
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.36063
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 75765311
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-23 09:01:58

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 74271901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-03 08:43:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.QLNO.HHZ. 2019-12-03T08:32:30.67 3.0 undecidable manual Sg 12.78 0
IV.IST3.HHZ. 2019-12-03T08:32:21.65 3.0 negative manual Pg 19.68 0
IV.DGI.HHZ. 2019-12-03T08:32:18.33 3.0 undecidable manual Sn -7.55 0
OX.CIMO.HHZ. 2019-12-03T08:32:16.44 3.0 undecidable manual Sn -0.49 0
IV.MPNC.HHZ. 2019-12-03T08:32:13.72 3.0 positive manual Pn 3.08 0
IT.GLNS.HNZ. 2019-12-03T08:32:08.67 3.0 undecidable manual Sg 14.93 0
IV.VITU.HHZ. 2019-12-03T08:32:00.81 3.0 undecidable manual Sn -1.04 0
OX.CIMO.HHZ. 2019-12-03T08:31:47.57 3.0 negative manual Pg 8.04 0
IV.MILN.HNZ. 2019-12-03T08:31:43.03 3.0 undecidable manual Pn 1.84 0
IV.TERO.HHZ. 2019-12-03T08:31:17.77 0.6 undecidable manual S 115 40.0266 50 -0.17 46
IV.ARVD.HHZ. 2019-12-03T08:31:17.14 3.0 undecidable manual Sn -0.82 0
IV.SMA1.EHZ. 2019-12-03T08:31:13.42 0.6 undecidable manual S 139 21.6672 116 0.39 46
IV.GAVE.EHZ. 2019-12-03T08:31:13.11 1.0 undecidable manual S 246 23.6541 50 -0.44 23
IV.LNSS.HNE. 2019-12-03T08:31:12.84 0.6 undecidable manual S 207 21.6672 116 -0.19 48
IV.TERO.HHZ. 2019-12-03T08:31:12.25 0.3 undecidable manual P 115 40.0266 50 -0.08 71
IV.MTRA.HNE. 2019-12-03T08:31:12.16 0.6 undecidable manual S 97 19.3695 118 -0.17 48
IV.MMO1.EHZ. 2019-12-03T08:31:12.25 0.6 undecidable manual S 45 19.1697 119 0 50
IV.RIBO.EHZ.01 2019-12-03T08:31:11.69 3.0 negative manual Pg -0.33 0
IV.MC2.EHZ. 2019-12-03T08:31:11.11 0.6 undecidable manual S 9 15.0738 125 0.07 49
IT.FIE.HGZ. 2019-12-03T08:31:11.91 3.0 positive manual P -0.38 0
IV.GAVE.EHZ. 2019-12-03T08:31:10.22 0.3 undecidable manual P 246 23.6541 50 0.43 68
IV.LNSS.HNE. 2019-12-03T08:31:09.25 0.1 undecidable manual P 207 21.6672 116 -0.24 94
IV.SMA1.EHZ. 2019-12-03T08:31:09.83 0.1 undecidable manual P 139 21.6672 116 0.34 92
IV.NRCA.HHZ. 2019-12-03T08:31:08.95 0.6 undecidable manual S 329 7.2927 145 -0.15 49
IV.MMO1.EHZ. 2019-12-03T08:31:08.97 0.1 undecidable manual P 45 19.1697 119 -0.07 98
IV.MC2.EHZ. 2019-12-03T08:31:08.43 0.1 undecidable manual P 9 15.0738 125 0.09 98
IV.MTRA.HNE. 2019-12-03T08:31:08.88 0.1 undecidable manual P 97 19.3695 118 -0.21 95
IV.NRCA.HHZ. 2019-12-03T08:31:07.30 0.1 negative manual P 329 7.2927 145 0.08 100
IV.APEC.HHZ. 2019-12-03T08:31:05.85 3.0 undecidable manual P 0.08 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.0002465 1.48 AML other m 2019-12-03T08:31:39.89
IV.NRCA.HHE. ML:1.5 0.000497 0.16 AML other m 2019-12-03T08:31:39.17
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