Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 05-12-2020 and time 11:11:53 (Italy) in region 4 km SE Monte Cavallo (MC)

A magnitude ML 1.6 earthquake occured in region: 4 km SE Monte Cavallo (MC), on

  • 05-12-2020 10:11:53 (UTC)
  • 05-12-2020 11:11:53 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.96, 13.04 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.

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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
Monte Cavallo MC 4 145 145
Visso MC 6 1107 1252
Ussita MC 9 444 1696
Pieve Torina MC 9 1458 3154
Preci PG 9 724 3878
Fiordimonte MC 9 202 4080
Pievebovigliana MC 12 866 4946
Sellano PG 12 1079 6025
Castelsantangelo sul Nera MC 12 281 6306
Fiastra MC 13 559 6865
Muccia MC 13 915 7780
Acquacanina MC 14 121 7901
Serravalle di Chienti MC 14 1070 8971
Bolognola MC 16 142 9113
Cerreto di Spoleto PG 19 1075 10188
Camerino MC 19 6974 17162
Norcia PG 20 4957 22119

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
55 Km NE of Terni (111501 inhabitants)
55 Km E of Perugia (166134 inhabitants)
64 Km NW of Teramo (54892 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
97 Km NE of Viterbo (67173 inhabitants)
98 Km S of Fano (60888 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.6 2020-12-05
10:11:53		 42.96 13.04 11 2020-12-05
10:31:54		 Sala Sismica INGV-Roma 85212491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-05 10:11:53 ± 0.06
Latitude 42.96 ± 0.00
Longitude 13.04 ± 0.00
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85212491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 157
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 219
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 130
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
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) 0.00989
Epicentral distance of station farthest from the epicenter (degree) 0.33545
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 85212491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-05 10:31:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MF5.EHZ. 2020-12-05T10:12:06.09 0.6 undecidable manual S 85 0.3112 90 0.89 37
IV.SNTG.HHZ. 2020-12-05T10:12:05.15 0.6 undecidable manual S 347 0.2995 90 0.28 45
IV.MTRA.EHZ. 2020-12-05T10:12:05.79 0.6 undecidable manual S 128 0.3354 90 -0.13 47
IV.ASSB.HHZ. 2020-12-05T10:12:04.36 0.6 undecidable manual S 286 0.2869 90 -0.12 47
IV.MDAR.HNN. 2020-12-05T10:12:03.04 0.6 undecidable manual S 19 0.2419 90 -0.12 47
IV.GUMA.HHE. 2020-12-05T10:12:03.64 0.3 undecidable manual S 65 0.2401 90 0.54 65
IV.MMO1.EHZ. 2020-12-05T10:12:02.29 0.3 undecidable manual S 107 0.2221 90 -0.28 69
IV.CSP1.EHZ. 2020-12-05T10:12:01.13 0.3 undecidable manual S 44 0.1781 91 -0.13 71
IV.PF6.EHE. 2020-12-05T10:12:01.96 0.6 undecidable manual S 34 0.2095 90 -0.23 46
IV.MF5.EHZ. 2020-12-05T10:12:00.61 0.1 undecidable manual P 85 0.3112 90 0.34 89
IV.ASSB.HHZ. 2020-12-05T10:12:00.06 0.3 undecidable manual P 286 0.2869 90 0.21 69
IV.MTRA.EHZ. 2020-12-05T10:12:00.66 0.3 undecidable manual P 128 0.3354 90 -0.02 71
IV.MML1.HNE. 2020-12-05T10:12:00.48 0.6 undecidable manual S 343 0.1574 91 -0.16 48
IV.GUMA.HHE. 2020-12-05T10:11:59.25 0.1 undecidable manual P 65 0.2401 90 0.19 93
IV.NRCA.HNZ. 2020-12-05T10:11:59.76 0.3 undecidable manual S 156 0.1421 92 -0.43 69
IV.MC2.EHZ. 2020-12-05T10:11:59.63 0.6 undecidable manual S 115 0.1232 97 -0.01 50
IV.SNTG.HHZ. 2020-12-05T10:11:59.93 0.1 undecidable manual P 347 0.2995 90 -0.14 93
IV.CESI.HHZ. 2020-12-05T10:11:59.15 0.3 undecidable manual S 293 0.1043 111 0.05 74
IV.MMO1.EHZ. 2020-12-05T10:11:58.56 0.1 undecidable manual P 107 0.2221 90 -0.19 94
IV.PF6.EHE. 2020-12-05T10:11:58.38 0.1 undecidable manual P 34 0.2095 90 -0.15 94
IV.FDMO.HHZ. 2020-12-05T10:11:58.36 0.3 undecidable manual S 27 0.0818 125 -0.16 72
IV.MDAR.HNN. 2020-12-05T10:11:58.95 0.3 undecidable manual P 19 0.2419 90 -0.14 71
IV.FEMA.HNZ. 2020-12-05T10:11:57.48 0.3 undecidable manual S 97 0.0099 172 0.07 75
IV.MML1.HNE. 2020-12-05T10:11:57.60 0.1 undecidable manual P 343 0.1574 91 -0.03 98
IT.MTCL.HGZ. 2020-12-05T10:11:57.50 0.3 undecidable manual S 319 0.0405 151 -0.2 73
IV.NRCA.HNZ. 2020-12-05T10:11:57.18 0.1 undecidable manual P 156 0.1421 92 -0.19 96
IV.MC2.EHZ. 2020-12-05T10:11:57.12 0.1 undecidable manual P 115 0.1232 97 0.06 98
IV.CSP1.EHZ. 2020-12-05T10:11:57.99 0.1 undecidable manual P 44 0.1781 91 0 98
IV.FDMO.HHZ. 2020-12-05T10:11:56.47 0.1 negative manual P 27 0.0818 125 0.06 99
IV.CESI.HHZ. 2020-12-05T10:11:56.88 0.1 undecidable manual P 293 0.1043 111 0.13 97
IV.FEMA.HNZ. 2020-12-05T10:11:55.95 0.1 negative manual P 97 0.0099 172 0.18 98
IT.MTCL.HGZ. 2020-12-05T10:11:55.97 0.1 undecidable manual P 319 0.0405 151 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.6 0.000467 0.24 AML other m 2020-12-05T10:11:58.42
IV.FDMO.HHE. ML:1.8 0.0007645 0.14 AML other m 2020-12-05T10:11:58.65
IV.CESI.HHE. ML:1.4 0.000289 0.1 AML other m 2020-12-05T10:11:59.41
IV.CESI.HHN. ML:1.6 0.0004025 0.12 AML other m 2020-12-05T10:11:59.41
IV.NRCA.HHN. ML:2.1 0.00115 0.1 AML other m 2020-12-05T10:11:59.89
IV.NRCA.HNN. ML:2.1 0.00112 0.1 AML other m 2020-12-05T10:11:59.94
IV.NRCA.HNE. ML:1.8 0.000644 0.08 AML other m 2020-12-05T10:11:59.96
IV.CSP1.EHN. ML:2 0.000704 0.5 AML other m 2020-12-05T10:12:01.49
IV.CSP1.EHE. ML:2 0.0007595 0.36 AML other m 2020-12-05T10:12:01.89
IV.FEMA.HNE. ML:1.6 0.00078186235 0.1024 AML other m 2020-12-05T10:11:57.70
IV.FEMA.HNN. ML:1.5 0.00053173805 0.1088 AML other m 2020-12-05T10:11:58.27
IV.CESI.HNE. ML:1.3 0.0002407904 0.0768 AML other m 2020-12-05T10:11:59.42
IV.CESI.HNN. ML:1.6 0.00038579915 0.1088 AML other m 2020-12-05T10:11:59.42
IV.NRCA.HHE. ML:1.9 0.0007322742 0.0832 AML other m 2020-12-05T10:11:59.96
IV.SNTG.HHE. ML:0.8 2.9115365E-5 0.096 AML other m 2020-12-05T10:12:05.40
IV.SNTG.HHN. ML:0.9 3.290197E-5 0.1024 AML other m 2020-12-05T10:12:05.50
IV.MTRA.EHE. ML:1.3 7.3545975E-5 0.2432 AML other m 2020-12-05T10:12:08.59
IV.MTRA.EHN. ML:1.3 7.598552E-5 0.2816 AML other m 2020-12-05T10:12:06.79
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