Earthquake with magnitude of ML 1.0 on date 23-11-2020 and time 23:56:24 (Italy) in region 3 km S Castelsantangelo sul Nera (MC)

A magnitude ML 1.0 earthquake occured in region: 3 km S Castelsantangelo sul Nera (MC), on

  • 23-11-2020 22:56:24 (UTC)
  • 23-11-2020 23:56:24 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.87, 13.15 at 10 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.

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 3 281 281
Visso MC 9 1107 1388
Ussita MC 9 444 1832
Preci PG 9 724 2556
Norcia PG 9 4957 7513
Montemonaco AP 15 604 8117
Montegallo AP 16 523 8640
Bolognola MC 16 142 8782
Arquata del Tronto AP 16 1178 9960
Sellano PG 18 1079 11039
Montefortino FM 18 1178 12217
Acquacanina MC 18 121 12338
Monte Cavallo MC 18 145 12483
Fiastra MC 19 559 13042
Cerreto di Spoleto PG 19 1075 14117
Fiordimonte MC 19 202 14319
Cascia PG 20 3217 17536

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
51 Km W of Teramo (54892 inhabitants)
53 Km NE of Terni (111501 inhabitants)
61 Km NW of L'Aquila (69753 inhabitants)
67 Km E of Perugia (166134 inhabitants)
89 Km SW of Ancona (100861 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
98 Km W of Pescara (121014 inhabitants)
99 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 1.0 2020-11-23
22:56:24
42.87 13.15 10 2020-11-23
23:10:59
Sala Sismica INGV-Roma 84971371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-23 22:56:24 ± 0.05
Latitude 42.87 ± 0.00
Longitude 13.15 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84971371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 338
Semi-minor axis of confidence ellipse (meter) 229
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) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 42
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.04227
Epicentral distance of station farthest from the epicenter (degree) 0.46225
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitude information

ML:1

Field Value
Value 1
Uncertainty 0.4
Num. used stations 19
Type of magnitude ML
Reference to an origin 84971371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-23 23:10:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-11-23T22:56:41.12 0.1 undecidable manual S 356 0.4623 50 0.36 86
IV.MOMA.HNN. 2020-11-23T22:56:40.23 0.3 undecidable manual S 262 0.4272 50 0.5 63
IV.TERO.HHZ. 2020-11-23T22:56:39.30 0.1 undecidable manual S 126 0.4155 50 -0.09 91
IV.SNTG.HHZ. 2020-11-23T22:56:39.41 0.3 undecidable manual S 339 0.4146 50 0.05 69
IV.MNTT.EHZ. 2020-11-23T22:56:38.58 0.1 undecidable manual S 59 0.3813 50 0.21 90
IV.ASSB.HHZ. 2020-11-23T22:56:38.77 0.3 undecidable manual S 296 0.3966 50 -0.06 69
IV.MF5.EHZ. 2020-11-23T22:56:35.20 0.1 undecidable manual S 62 0.2581 50 0.47 87
IV.LNSS.HHZ. 2020-11-23T22:56:35.34 0.1 undecidable manual S 196 0.2761 50 0.09 94
IV.PF6.EHZ. 2020-11-23T22:56:34.75 0.1 undecidable manual S 7 0.2716 50 -0.37 89
IV.T1299.HNZ. 2020-11-23T22:56:34.68 0.1 undecidable manual S 157 0.2545 50 0.08 95
IV.SMA1.EHZ. 2020-11-23T22:56:34.93 0.1 undecidable manual S 150 0.2752 50 -0.29 90
IV.GUMA.HHZ. 2020-11-23T22:56:34.41 0.1 undecidable manual S 35 0.2383 50 0.27 91
IV.ASSB.HHZ. 2020-11-23T22:56:33.26 0.3 undecidable manual P 296 0.3966 50 0.5 63
IV.CESI.HHZ. 2020-11-23T22:56:33.53 0.1 undecidable manual S 308 0.2239 50 -0.16 94
IV.EL6.EHZ. 2020-11-23T22:56:33.76 0.1 undecidable manual P 356 0.4623 50 -0.12 90
IV.CSP1.EHZ. 2020-11-23T22:56:33.52 0.1 undecidable manual S 11 0.2275 50 -0.29 91
IV.MOMA.HNN. 2020-11-23T22:56:33.47 0.3 undecidable manual P 262 0.4272 50 0.19 67
IV.MNTT.EHZ. 2020-11-23T22:56:33.10 0.1 undecidable manual P 59 0.3813 50 0.61 81
IV.SNTG.HHZ. 2020-11-23T22:56:33.01 0.3 undecidable manual P 339 0.4146 50 -0.06 69
IV.MTRA.EHZ. 2020-11-23T22:56:32.96 0.3 undecidable manual S 121 0.2149 50 -0.47 66
IV.TERO.HHZ. 2020-11-23T22:56:32.90 0.1 undecidable manual P 126 0.4155 50 -0.19 90
IV.FDMO.HHZ. 2020-11-23T22:56:31.63 0.1 undecidable manual S 346 0.1736 118 -0.44 89
IT.MTCL.HGZ. 2020-11-23T22:56:31.46 0.3 undecidable manual S 319 0.1655 120 -0.34 68
IV.GUMA.HHZ. 2020-11-23T22:56:30.09 0.1 undecidable manual P 35 0.2383 50 0.05 96
IV.LNSS.HHZ. 2020-11-23T22:56:30.57 0.1 undecidable manual P 196 0.2761 50 -0.13 93
IV.PF6.EHZ. 2020-11-23T22:56:30.27 0.1 undecidable manual P 7 0.2716 50 -0.35 89
IV.FEMA.HNZ. 2020-11-23T22:56:30.36 0.1 undecidable manual S 323 0.1178 129 0.09 97
IV.T1299.HNZ. 2020-11-23T22:56:30.34 0.1 undecidable manual P 157 0.2545 50 0.03 96
IV.SMA1.EHZ. 2020-11-23T22:56:30.47 0.1 undecidable manual P 150 0.2752 50 -0.21 92
IV.MMO1.EHZ. 2020-11-23T22:56:30.57 0.1 undecidable manual S 77 0.1358 125 -0.26 93
IV.MF5.EHZ. 2020-11-23T22:56:30.56 0.1 undecidable manual P 62 0.2581 50 0.17 93
IV.MTRA.EHZ. 2020-11-23T22:56:29.51 0.3 undecidable manual P 121 0.2149 50 -0.13 71
IV.CESI.HHZ. 2020-11-23T22:56:29.68 0.1 undecidable manual P 308 0.2239 50 -0.11 95
IV.CSP1.EHZ. 2020-11-23T22:56:29.63 0.1 undecidable manual P 11 0.2275 50 -0.23 92
IT.MTCL.HGZ. 2020-11-23T22:56:28.59 0.3 undecidable manual P 319 0.1655 120 -0.1 72
IV.MMO1.EHZ. 2020-11-23T22:56:28.07 0.1 undecidable manual P 77 0.1358 125 -0.07 97
IV.NRCA.HNZ. 2020-11-23T22:56:28.42 0.1 undecidable manual S 214 0.0423 156 -0.01 100
IV.FDMO.HHZ. 2020-11-23T22:56:28.72 0.1 undecidable manual P 346 0.1736 118 -0.14 95
IV.MC2.EHZ. 2020-11-23T22:56:28.98 0.1 undecidable manual S 36 0.0531 150 0.35 93
IV.FEMA.HNZ. 2020-11-23T22:56:27.94 0.1 undecidable manual P 323 0.1178 129 0.12 96
IV.MC2.EHZ. 2020-11-23T22:56:27.16 0.1 undecidable manual P 36 0.0531 150 0.28 94
IV.NRCA.HNZ. 2020-11-23T22:56:26.96 0.1 negative manual P 214 0.0423 156 0.2 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.8 0.001027 0.34 AML other m 2020-11-23T22:56:28.68
IV.NRCA.HNN. ML:1.9 0.00139 0.14 AML other m 2020-11-23T22:56:28.58
IV.NRCA.HHN. ML:1.9 0.00137 0.14 AML other m 2020-11-23T22:56:28.58
IV.NRCA.HNE. ML:1.7 0.000924 0.08 AML other m 2020-11-23T22:56:28.69
IV.FDMO.HHN. ML:1.1 9.945E-5 0.26 AML other m 2020-11-23T22:56:32.04
IV.FDMO.HHE. ML:1 8.7E-5 1.76 AML other m 2020-11-23T22:56:32.92
IV.CESI.HHN. ML:1.2 9.87E-5 0.1 AML other m 2020-11-23T22:56:33.88
IV.CESI.HHE. ML:1 6.05E-5 0.32 AML other m 2020-11-23T22:56:33.67
IV.GUMA.HHN. ML:1.2 8.455E-5 0.42 AML other m 2020-11-23T22:56:34.68
IV.MTRA.EHN. ML:0.6 2.321966E-5 0.2944 AML other m 2020-11-23T22:56:33.19
IV.CSP1.EHN. ML:1.3 0.000123268505 0.3584 AML other m 2020-11-23T22:56:33.91
IV.GUMA.HHE. ML:0.8 3.2547465E-5 0.1792 AML other m 2020-11-23T22:56:35.16
IV.SMA1.EHE. ML:0.5 1.5337135E-5 0.192 AML other m 2020-11-23T22:56:35.12
IV.LNSS.HHE. ML:0.9 3.3724065E-5 0.6016 AML other m 2020-11-23T22:56:35.48
IV.LNSS.HHN. ML:0.9 3.673286E-5 1.0496 AML other m 2020-11-23T22:56:35.87
IV.TERO.HHE. ML:0.5 9.1221245E-6 0.128 AML other m 2020-11-23T22:56:39.78
IV.TERO.HHN. ML:0.7 1.4383815E-5 0.3456 AML other m 2020-11-23T22:56:39.51
IV.ASSB.HHE. ML:0.7 1.5487919E-5 0.6784 AML other m 2020-11-23T22:56:39.16
IV.ASSB.HHN. ML:0.7 1.2938795E-5 0.6272 AML other m 2020-11-23T22:56:38.91
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