Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 04-12-2023 and time 21:44:10 (Italy) in region 6 km S Monte Cavallo (MC)

A magnitude ML 1.3 earthquake occured in region: 6 km S Monte Cavallo (MC), on

  • 04-12-2023 20:44:10 (UTC)
  • 04-12-2023 21:44:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9370, 12.9920 at 11 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.

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
Monte Cavallo MC 7 145 145
Sellano PG 7 1079 1224
Preci PG 8 724 1948
Visso MC 8 1107 3055
Ussita MC 12 444 3499
Pieve Torina MC 13 1458 4957
Fiordimonte MC 14 202 5159
Castelsantangelo sul Nera MC 14 281 5440
Cerreto di Spoleto PG 14 1075 6515
Serravalle di Chienti MC 15 1070 7585
Pievebovigliana MC 16 866 8451
Muccia MC 17 915 9366
Fiastra MC 17 559 9925
Norcia PG 18 4957 14882
Acquacanina MC 18 121 15003

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
53 Km E of Perugia (166134 inhabitants)
66 Km W of Teramo (54892 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
87 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 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 2023-12-04
20:44:10		 42.9368 12.9918 11 2023-12-04
21:07:47		 Sala Sismica INGV-Roma 123815641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-04 20:44:10 ± 0.05
Latitude 42.9368 ± 0.0027
Longitude 12.9918 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 123815641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 357
Semi-minor axis of confidence ellipse (meter) 243
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.34624
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 123815641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-04 21:07:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2023-12-04T20:44:29.41 1.0 undecidable manual S -0.08 0.37
IV.MMO1.EHZ. 2023-12-04T20:44:20.27 0.6 undecidable manual S 99 27.5502 50 0.03 49
IV.CSP1.EHZ. 2023-12-04T20:44:19.43 0.3 undecidable manual S 45 24.3534 50 0.03 73
7F.SIB3.EHZ. 2023-12-04T20:44:18.91 0.6 undecidable manual S 107 23.6541 50 -0.29 46
IV.MF5.EHZ. 2023-12-04T20:44:17.46 0.6 undecidable manual P 81 38.4282 50 -0.31 45
IV.MML1.EHZ. 2023-12-04T20:44:17.99 0.6 undecidable manual S 355 19.6692 50 -0.15 48
IV.SNTG.HHZ. 2023-12-04T20:44:17.28 0.3 undecidable manual P 353 35.5422 50 -0.05 72
IV.NRCA.HHZ. 2023-12-04T20:44:16.74 0.3 undecidable manual S 139 15.1737 126 -0.19 72
IV.ASSB.HHZ. 2023-12-04T20:44:16.31 0.6 undecidable manual P 294 29.4483 50 -0.08 48
IV.MMO1.EHZ. 2023-12-04T20:44:16.13 0.6 negative manual P 99 27.5502 50 0.04 49
IV.PF6.EHZ. 2023-12-04T20:44:16.08 0.3 undecidable manual P 36 27.6501 50 -0.04 73
IV.GAVE.EHZ. 2023-12-04T20:44:16.19 0.3 positive manual P 196 28.2495 50 -0.02 73
IV.FDMO.HHZ. 2023-12-04T20:44:16.32 0.3 undecidable manual S 35 13.4754 129 -0.14 73
IV.GUMA.HHZ. 2023-12-04T20:44:16.99 0.3 positive manual P 63 31.1466 50 0.34 68
IV.CESI.HHZ. 2023-12-04T20:44:15.60 0.3 undecidable manual S 317 10.3785 137 -0.06 75
IV.CSP1.EHZ. 2023-12-04T20:44:15.65 0.1 positive manual P 45 24.3534 50 0.04 98
7F.SIB2.EHZ. 2023-12-04T20:44:15.89 0.6 undecidable manual P 101 25.8519 50 0.06 49
7F.SIB3.EHZ. 2023-12-04T20:44:15.52 0.6 undecidable manual P 107 23.6541 50 0.03 49
IV.MC2.EHZ. 2023-12-04T20:44:14.58 0.6 undecidable manual P 100 16.2726 124 0.22 48
IV.FEMA.HNZ. 2023-12-04T20:44:14.81 0.3 undecidable manual S 59 5.4945 154 0.13 75
IV.NRCA.HHZ. 2023-12-04T20:44:14.18 0.1 positive manual P 139 15.1737 126 0 100
IT.MTCL.HGZ. 2023-12-04T20:44:14.57 0.3 undecidable manual S 6 6.3936 150 -0.26 72
IV.MML1.EHZ. 2023-12-04T20:44:14.84 0.6 positive manual P 355 19.6692 50 -0.04 49
IT.MTCL.HGZ. 2023-12-04T20:44:13.07 0.3 undecidable manual P 6 6.3936 150 0.1 75
IV.FDMO.HHZ. 2023-12-04T20:44:13.98 0.3 undecidable manual P 35 13.4754 129 0.07 74
IV.CESI.HHZ. 2023-12-04T20:44:13.57 0.1 negative manual P 317 10.3785 137 0.12 99
IV.FEMA.HNZ. 2023-12-04T20:44:13.14 0.3 undecidable manual P 59 5.4945 154 0.26 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1.1 0.000162 0.14 AML other m 2023-12-04T20:44:15.65
IV.CESI.HHN. ML:1.2 0.0001629836 0.1664 AML other m 2023-12-04T20:44:15.65
IV.NRCA.HHN. ML:1.6 0.0003725 0.14 AML other m 2023-12-04T20:44:16.85
IV.NRCA.HHE. ML:1.5 0.000259 0.1 AML other m 2023-12-04T20:44:16.90
IV.MML1.EHN. ML:1.1 0.000087420585 0.1408 AML other m 2023-12-04T20:44:18.75
IV.MML1.EHE. ML:1.2 0.0001295 0.16 AML other m 2023-12-04T20:44:18.44
IV.CSP1.EHE. ML:1.4 0.00016237315 0.2048 AML other m 2023-12-04T20:44:20.16
IV.CSP1.EHN. ML:1.6 0.0002085 0.22 AML other m 2023-12-04T20:44:20.16
IV.GAVE.EHN. ML:0.9 0.000041813845 0.2176 AML other m 2023-12-04T20:44:21.36
IV.GAVE.EHE. ML:1.1 0.000060894579999999997 0.1408 AML other m 2023-12-04T20:44:21.79
IV.GUMA.HHE. ML:1.6 0.0002045 0.18 AML other m 2023-12-04T20:44:22.16
IV.GUMA.HHN. ML:1.2 0.00006953032500000001 0.2176 AML other m 2023-12-04T20:44:22.96
IV.CESI.HNE. ML:1.2 0.00017631573 0.1408 AML other m 2023-12-04T20:44:15.65
IV.CESI.HNN. ML:1.1 0.000161926905 0.1536 AML other m 2023-12-04T20:44:15.90
IV.NRCA.HNE. ML:1.4 0.00023316214999999997 0.0896 AML other m 2023-12-04T20:44:16.90
IV.NRCA.HNN. ML:1.6 0.00035821919999999997 0.1408 AML other m 2023-12-04T20:44:16.92
IV.MML1.HNE. ML:1.2 0.0001124545 0.2304 AML other m 2023-12-04T20:44:18.32
IV.MML1.HNN. ML:1.1 0.00010113737 0.6016 AML other m 2023-12-04T20:44:18.09
IV.GAVE.HNE. ML:1.3 0.00010240659000000001 0.3712 AML other m 2023-12-04T20:44:21.29
IV.GAVE.HNN. ML:1.6 0.00019277005 0.9216 AML other m 2023-12-04T20:44:21.05
IV.GUMA.HNE. ML:1.4 0.0001289991 0.6272 AML other m 2023-12-04T20:44:33.66
IV.GUMA.HNN. ML:1.6 0.00018446435 0.6272 AML other m 2023-12-04T20:44:30.09
IV.MF5.EHE. ML:1.2 0.000054452335 2.3424 AML other m 2023-12-04T20:44:18.63
IV.MF5.EHN. ML:1.3 0.00006355144999999999 1.1008 AML other m 2023-12-04T20:44:30.34
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