Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 24-11-2020 and time 02:09:28 (Italy) in region 5 km SW Castelsantangelo sul Nera (MC)

A magnitude ML 0.7 earthquake occured in region: 5 km SW Castelsantangelo sul Nera (MC), on

  • 24-11-2020 01:09:28 (UTC)
  • 24-11-2020 02:09:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.87, 13.11 at 7 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
Castelsantangelo sul Nera MC 5 281 281
Preci PG 6 724 1005
Visso MC 7 1107 2112
Norcia PG 8 4957 7069
Ussita MC 9 444 7513
Sellano PG 15 1079 8592
Cerreto di Spoleto PG 17 1075 9667
Monte Cavallo MC 17 145 9812
Bolognola MC 17 142 9954
Montemonaco AP 18 604 10558
Cascia PG 18 3217 13775
Montegallo AP 18 523 14298
Arquata del Tronto AP 19 1178 15476
Acquacanina MC 19 121 15597
Fiordimonte MC 19 202 15799
Fiastra MC 19 559 16358

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km E of Foligno (57155 inhabitants)
51 Km NE of Terni (111501 inhabitants)
54 Km W of Teramo (54892 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
65 Km E of Perugia (166134 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
94 Km W of Montesilvano (53738 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 0.7 2020-11-24
01:09:28		 42.87 13.11 7 2020-11-24
01:19:43		 Sala Sismica INGV-Roma 84972991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-24 01:09:28 ± 0.06
Latitude 42.87 ± 0.00
Longitude 13.11 ± 0.00
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84972991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 354
Semi-minor axis of confidence ellipse (meter) 146
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 243
Circular confidence region, given by single value of horizontal uncertainty (meter) 350
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.43707
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 84972991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-24 01:19:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-11-24T01:09:44.45 0.6 undecidable manual S 124 0.4371 50 -0.52 42
IV.ASSB.HHZ. 2020-11-24T01:09:43.10 0.6 undecidable manual S 298 0.3741 50 0 47
IV.MF5.EHZ. 2020-11-24T01:09:40.40 0.3 undecidable manual S 65 0.2824 103 0.49 65
IV.T1299.HNZ. 2020-11-24T01:09:39.53 0.3 undecidable manual S 152 0.2653 104 0.25 69
IV.LNSS.HHN. 2020-11-24T01:09:39.25 0.3 undecidable manual S 191 0.2698 104 -0.2 70
IV.TERO.HHZ. 2020-11-24T01:09:38.70 0.1 undecidable manual P 124 0.4371 50 0.59 82
IV.MTRA.HNZ. 2020-11-24T01:09:38.45 0.3 undecidable manual S 118 0.2374 106 0.22 70
IV.CESI.HHZ. 2020-11-24T01:09:37.62 0.6 undecidable manual S 312 0.2041 108 0.62 42
IV.CSP1.EHZ. 2020-11-24T01:09:37.77 0.3 undecidable manual S 17 0.2338 106 -0.35 68
IV.ASSB.HHZ. 2020-11-24T01:09:36.66 0.1 undecidable manual P 298 0.3741 50 -0.37 88
IV.MMO1.EHZ. 2020-11-24T01:09:35.12 0.3 undecidable manual S 79 0.161 112 -0.34 69
IV.FDMO.HHZ. 2020-11-24T01:09:35.78 0.3 undecidable manual S 354 0.1691 111 0.02 74
IV.MF5.EHZ. 2020-11-24T01:09:35.23 0.1 undecidable manual P 65 0.2824 103 0.04 96
IT.MTCL.HGN. 2020-11-24T01:09:35.14 0.6 undecidable manual S 327 0.1502 114 0.07 49
IV.LNSS.HHN. 2020-11-24T01:09:34.84 0.1 undecidable manual P 191 0.2698 104 -0.09 95
IV.T1299.HNZ. 2020-11-24T01:09:34.76 0.1 undecidable manual P 152 0.2653 104 -0.07 96
IV.MTRA.HNZ. 2020-11-24T01:09:34.40 0.3 undecidable manual P 118 0.2374 106 0.18 71
IV.CESI.HHZ. 2020-11-24T01:09:33.65 0.1 undecidable manual P 312 0.2041 108 0.14 96
IV.CSP1.EHZ. 2020-11-24T01:09:33.95 0.1 undecidable manual P 17 0.2338 106 -0.21 94
IV.FEMA.HNN. 2020-11-24T01:09:33.69 0.6 undecidable manual S 335 0.1043 123 0.18 48
IT.MTCL.HGN. 2020-11-24T01:09:32.50 0.3 undecidable manual P 327 0.1502 114 0.1 73
IV.MMO1.EHZ. 2020-11-24T01:09:32.44 0.1 positive manual P 79 0.161 112 -0.19 95
IV.FDMO.HHZ. 2020-11-24T01:09:32.72 0.1 undecidable manual P 354 0.1691 111 -0.07 97
IV.MC2.EHZ. 2020-11-24T01:09:32.46 0.3 undecidable manual S 53 0.0719 133 -0.06 75
IV.FEMA.HNN. 2020-11-24T01:09:31.59 0.6 undecidable manual P 335 0.1043 123 0.09 49
IV.NRCA.HNZ. 2020-11-24T01:09:31.37 0.3 undecidable manual S 176 0.0342 153 -0.26 72
IV.NRCA.HNZ. 2020-11-24T01:09:30.49 0.1 positive manual P 176 0.0342 153 0.08 100
IV.MC2.EHZ. 2020-11-24T01:09:30.89 0.1 undecidable manual P 53 0.0719 133 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.7 4.16E-5 0.28 AML other m 2020-11-24T01:09:36.54
IV.FDMO.HHE. ML:0.9 6.155E-5 0.22 AML other m 2020-11-24T01:09:36.60
IV.NRCA.HHE. ML:0 0.0012303175 0.18 AML other m 2020-11-24T01:09:31.44
IV.NRCA.HHN. ML:0 0.0012255475 0.12 AML other m 2020-11-24T01:09:32.04
IV.CESI.HHE. ML:0.6 2.635941E-5 0.24 AML other m 2020-11-24T01:09:37.84
IV.CESI.HHN. ML:0.8 4.1235105E-5 0.2 AML other m 2020-11-24T01:09:37.87
IV.CSP1.EHE. ML:1.1 6.9242475E-5 0.36 AML other m 2020-11-24T01:09:38.53
IV.CSP1.EHN. ML:1 6.4382435E-5 0.48 AML other m 2020-11-24T01:09:38.17
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