Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 27-11-2020 and time 23:45:08 (Italy) in region 1 km SW Monte Cavallo (MC)

A magnitude ML 0.9 earthquake occured in region: 1 km SW Monte Cavallo (MC), on

  • 27-11-2020 22:45:08 (UTC)
  • 27-11-2020 23:45:08 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.99, 12.99 at 12 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 1 145 145
Pieve Torina MC 8 1458 1603
Fiordimonte MC 10 202 1805
Serravalle di Chienti MC 10 1070 2875
Visso MC 10 1107 3982
Pievebovigliana MC 12 866 4848
Muccia MC 12 915 5763
Sellano PG 12 1079 6842
Preci PG 13 724 7566
Ussita MC 13 444 8010
Fiastra MC 15 559 8569
Acquacanina MC 16 121 8690
Castelsantangelo sul Nera MC 17 281 8971
Camerino MC 18 6974 15945
Sefro MC 18 422 16367
Cerreto di Spoleto PG 19 1075 17442
Bolognola MC 19 142 17584

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km E of Foligno (57155 inhabitants)
51 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
69 Km NW of Teramo (54892 inhabitants)
78 Km NW of L'Aquila (69753 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
95 Km S of Fano (60888 inhabitants)
96 Km NE of Viterbo (67173 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 0.9 2020-11-27
22:45:08		 42.99 12.99 12 2020-11-27
23:02:34		 Sala Sismica INGV-Roma 85056281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-27 22:45:08 ± 0.07
Latitude 42.99 ± 0.00
Longitude 12.99 ± 0.00
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85056281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 321
Semi-minor axis of confidence ellipse (meter) 221
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 244
Circular confidence region, given by single value of horizontal uncertainty (meter) 320
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.2617
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 85056281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-27 23:02:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SPS2.HHZ. 2020-11-27T22:46:01.51 3.0 positive manual Pn 12 0
XK.SELL.HHZ. 2020-11-27T22:45:59.48 3.0 positive manual Pn 4.83 0
IV.MCRV.HHZ. 2020-11-27T22:45:38.68 3.0 negative manual Pn 12.43 0
IV.PCN.EHZ. 2020-11-27T22:45:38.42 3.0 undecidable manual Sn -0.45 0
ST.ZIAN.EHZ. 2020-11-27T22:45:34.19 3.0 undecidable manual Pg 21.290001 0
IV.MMO1.EHZ. 2020-11-27T22:45:18.80 0.3 undecidable manual S 109 0.2617 94 -0.11 71
IV.PF6.EHN. 2020-11-27T22:45:17.32 0.3 undecidable manual S 45 0.2122 97 -0.14 71
IV.CSP1.EHZ. 2020-11-27T22:45:16.89 0.3 undecidable manual S 56 0.1889 99 0.12 71
IV.NRCA.HHZ. 2020-11-27T22:45:16.17 0.3 undecidable manual S 149 0.1781 100 -0.28 69
IV.MC2.EHE. 2020-11-27T22:45:16.31 0.3 undecidable manual S 117 0.1637 102 0.27 70
IV.MMO1.EHZ. 2020-11-27T22:45:14.51 0.1 undecidable manual P 109 0.2617 94 -0.08 95
IV.MML1.HNN. 2020-11-27T22:45:14.96 0.3 undecidable manual S 354 0.1277 113 -0.05 74
IV.NRCA.HHZ. 2020-11-27T22:45:13.04 0.1 undecidable manual P 149 0.1781 100 -0.13 95
IV.MC2.EHE. 2020-11-27T22:45:13.01 0.1 undecidable manual P 117 0.1637 102 0.08 97
IV.CSP1.EHZ. 2020-11-27T22:45:13.44 0.1 undecidable manual P 56 0.1889 99 0.08 96
IV.FEMA.HNE. 2020-11-27T22:45:13.38 0.3 undecidable manual S 119 0.0504 149 0.12 73
IV.CESI.HHZ. 2020-11-27T22:45:13.51 0.3 undecidable manual S 286 0.0648 141 -0.01 75
IV.PF6.EHN. 2020-11-27T22:45:13.84 0.6 undecidable manual P 45 0.2122 97 0.09 48
IV.FDMO.HHZ. 2020-11-27T22:45:13.93 0.3 undecidable manual S 55 0.0872 130 -0.05 74
IV.MML1.HNN. 2020-11-27T22:45:12.10 0.3 undecidable manual P 354 0.1277 113 -0.24 71
IT.MTCL.HGE. 2020-11-27T22:45:12.67 0.3 undecidable manual S 44 0.0099 173 -0.21 73
IT.MTCL.HGE. 2020-11-27T22:45:11.16 0.1 undecidable manual P 44 0.0099 173 0.05 100
IV.FDMO.HHZ. 2020-11-27T22:45:11.84 0.1 undecidable manual P 55 0.0872 130 0.1 97
IV.FEMA.HNE. 2020-11-27T22:45:11.44 0.1 undecidable manual P 119 0.0504 149 0.11 98
IV.CESI.HHZ. 2020-11-27T22:45:11.61 0.1 undecidable manual P 286 0.0648 141 0.13 97
IV.MAON.HHZ. 2020-11-27T22:45:01.12 3.0 undecidable manual P 0.31 0
IT.FIE.HGZ. 2020-11-27T22:44:52.18 3.0 undecidable manual Pn -0.58 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:2.1 0.0009875 0.66 AML other m 2020-11-27T22:45:05.56
IV.CESI.HHE. ML:0 0.0001074 0.08 AML other m 2020-11-27T22:45:13.58
IV.CESI.HHN. ML:0 0.0001235 0.18 AML other m 2020-11-27T22:45:13.69
IV.NRCA.HHN. ML:0 4.06E-5 0.14 AML other m 2020-11-27T22:45:16.43
IV.NRCA.HHE. ML:0 3.195E-5 0.92 AML other m 2020-11-27T22:45:16.93
IV.NRCA.HNE. ML:2.2 0.001256 0.84 AML other m 2020-11-27T22:45:17.49
IV.CSP1.EHN. ML:0 4.23912775E-5 0.1536 AML other m 2020-11-27T22:45:17.05
IV.CSP1.EHE. ML:0 3.9393615E-5 0.128 AML other m 2020-11-27T22:45:17.24
IV.CESI.HNE. ML:0.8 8.5070338E-5 0.0896 AML other m 2020-11-27T22:45:13.59
IV.CESI.HNN. ML:1 0.0001383711 0.192 AML other m 2020-11-27T22:45:13.70
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