Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 25-11-2020 and time 14:56:13 (Italy) in region 4 km E Castelsantangelo sul Nera (MC)

A magnitude ML 1.5 earthquake occured in region: 4 km E Castelsantangelo sul Nera (MC), on

  • 25-11-2020 13:56:13 (UTC)
  • 25-11-2020 14:56:13 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.88, 13.2 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.

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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 4 281 281
Ussita MC 9 444 725
Montemonaco AP 10 604 1329
Visso MC 11 1107 2436
Montegallo AP 12 523 2959
Bolognola MC 13 142 3101
Preci PG 13 724 3825
Norcia PG 13 4957 8782
Montefortino FM 13 1178 9960
Arquata del Tronto AP 14 1178 11138
Amandola FM 17 3629 14767
Acquacanina MC 17 121 14888
Fiastra MC 18 559 15447
Sarnano MC 19 3264 18711
Comunanza AP 19 3166 21877
Fiordimonte MC 20 202 22079

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
48 Km NW of Teramo (54892 inhabitants)
58 Km NE of Terni (111501 inhabitants)
61 Km N of L'Aquila (69753 inhabitants)
71 Km E of Perugia (166134 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
95 Km W of Pescara (121014 inhabitants)
99 Km NW of Chieti (51815 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 1.5 2020-11-25
13:56:13		 42.88 13.2 12 2020-11-25
14:01:12		 Sala Sismica INGV-Roma 85008661
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-25 13:56:13 ± 0.07
Latitude 42.88 ± 0.00
Longitude 13.20 ± 0.00
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85008661

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 457
Semi-minor axis of confidence ellipse (meter) 158
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 250
Circular confidence region, given by single value of horizontal uncertainty (meter) 460
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.3921
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 35
Type of magnitude ML
Reference to an origin 85008661
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-25 14:01:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-11-25T13:56:36.64 3.0 undecidable manual S -0.02 0
IV.CAMP.HHZ. 2020-11-25T13:56:27.30 0.6 undecidable manual S 156 0.3777 93 0.01 47
IV.SAP2.EHZ. 2020-11-25T13:56:24.34 0.6 undecidable manual S 34 0.2581 95 0.58 43
IV.MOMA.HHZ. 2020-11-25T13:56:23.91 3.0 undecidable manual P 0.35 0
IV.ASSB.HHZ. 2020-11-25T13:56:22.46 3.0 positive manual P -0.27 0
IV.CSP1.EHZ. 2020-11-25T13:56:22.12 0.6 undecidable manual S 0 0.2095 97 -0.21 47
IV.MF5.EHZ. 2020-11-25T13:56:22.89 0.6 undecidable manual S 61 0.2158 97 0.39 45
IV.EL6.EHZ. 2020-11-25T13:56:22.83 3.0 undecidable manual P -0.12 0
IV.MTRA.HNZ. 2020-11-25T13:56:21.41 0.6 undecidable manual S 131 0.1889 99 -0.32 47
IV.CAMP.HHZ. 2020-11-25T13:56:21.39 0.6 negative manual P 156 0.3777 93 -0.13 47
IV.TERO.HHZ. 2020-11-25T13:56:21.62 1.0 undecidable manual P 131 0.3921 92 -0.14 23
IV.FDMO.HHZ. 2020-11-25T13:56:20.97 0.6 undecidable manual S 331 0.1763 101 -0.38 45
IV.LNSS.HHZ. 2020-11-25T13:56:20.43 0.3 positive manual P 203 0.3031 94 0.18 70
IV.SMA1.EHZ. 2020-11-25T13:56:19.58 0.6 negative manual P 159 0.2698 94 -0.09 48
IV.SAP2.EHZ. 2020-11-25T13:56:19.76 1.0 undecidable manual P 34 0.2581 95 0.28 23
IV.CESI.HHZ. 2020-11-25T13:56:19.48 0.1 positive manual P 299 0.25 95 0.13 97
IV.MF5.EHZ. 2020-11-25T13:56:19.05 0.6 positive manual P 61 0.2158 97 0.29 46
IV.MC2.EHZ. 2020-11-25T13:56:18.04 0.6 undecidable manual S 341 0.0315 160 0.05 51
IV.MTRA.HNZ. 2020-11-25T13:56:18.12 0.3 undecidable manual P 131 0.1889 99 -0.19 72
IV.FDMO.HHZ. 2020-11-25T13:56:18.05 0.1 positive manual P 331 0.1763 101 -0.04 97
IV.MMO1.EHZ. 2020-11-25T13:56:18.64 0.6 undecidable manual S 79 0.0926 127 -0.42 47
IV.CSP1.EHZ. 2020-11-25T13:56:18.55 0.1 undecidable manual P 0 0.2095 97 -0.1 96
IT.MTCL.HGZ. 2020-11-25T13:56:18.26 0.3 undecidable manual P 307 0.1862 99 0 73
IV.NRCA.HNZ. 2020-11-25T13:56:18.82 0.6 undecidable manual S 233 0.0809 133 0.01 51
IV.MMO1.EHZ. 2020-11-25T13:56:16.70 0.1 undecidable manual P 79 0.0926 127 -0.07 100
IV.NRCA.HNZ. 2020-11-25T13:56:16.80 0.1 undecidable manual P 233 0.0809 133 0.18 98
IV.MC2.EHZ. 2020-11-25T13:56:16.32 1.0 undecidable manual P 341 0.0315 160 0.17 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.1 0.0014095313 0.0768 AML other m 2020-11-25T13:56:18.91
IV.NRCA.HHN. ML:2 0.001276696 0.1024 AML other m 2020-11-25T13:56:18.96
IV.NRCA.HNE. ML:2 0.00126387735 0.0832 AML other m 2020-11-25T13:56:18.92
IV.NRCA.HNN. ML:2 0.001248394 0.1088 AML other m 2020-11-25T13:56:18.91
IV.FDMO.HHE. ML:1.5 0.0002132309 0.2432 AML other m 2020-11-25T13:56:21.49
IV.FDMO.HHN. ML:1.7 0.00035371295 0.1984 AML other m 2020-11-25T13:56:21.44
IV.MTRA.EHE. ML:1.5 0.00020839325 0.1408 AML other m 2020-11-25T13:56:22.53
IV.MTRA.EHN. ML:1.7 0.0003092854 0.1216 AML other m 2020-11-25T13:56:22.79
IV.MTRA.HNE. ML:1.5 0.00021662136 0.1472 AML other m 2020-11-25T13:56:22.52
IV.MTRA.HNN. ML:1.7 0.0003265181 0.1408 AML other m 2020-11-25T13:56:22.79
IV.CSP1.EHE. ML:1.7 0.0003200238 0.3008 AML other m 2020-11-25T13:56:23.41
IV.CSP1.EHN. ML:1.6 0.0002171339 0.1984 AML other m 2020-11-25T13:56:23.23
IV.MF5.EHE. ML:1.2 0.000106253035 0.4352 AML other m 2020-11-25T13:56:26.91
IV.MF5.EHN. ML:1.3 0.0001130177 0.1792 AML other m 2020-11-25T13:56:23.36
IV.CESI.HNE. ML:1.4 0.0001351886 0.608 AML other m 2020-11-25T13:56:21.61
IV.CESI.HNN. ML:1.8 0.0002886698 0.2304 AML other m 2020-11-25T13:56:24.08
IV.CESI.HHE. ML:1.5 0.00014973245 0.16 AML other m 2020-11-25T13:56:24.20
IV.CESI.HHN. ML:1.8 0.00028525735 0.2368 AML other m 2020-11-25T13:56:24.19
IV.SMA1.EHE. ML:1.1 6.5842725E-5 0.0832 AML other m 2020-11-25T13:56:24.82
IV.SMA1.EHN. ML:1.2 7.4235305E-5 0.1024 AML other m 2020-11-25T13:56:24.91
IV.SAP2.EHE. ML:1.4 0.00012529557 0.1024 AML other m 2020-11-25T13:56:25.70
IV.SAP2.EHN. ML:2.1 0.00062125525 0.0768 AML other m 2020-11-25T13:56:24.85
IV.LNSS.HHE. ML:1.5 0.00012403715 0.1408 AML other m 2020-11-25T13:56:26.90
IV.LNSS.HHN. ML:1.4 9.9563745E-5 0.1408 AML other m 2020-11-25T13:56:26.79
IV.CAMP.HHE. ML:1.3 5.866681E-5 0.1856 AML other m 2020-11-25T13:56:27.55
IV.CAMP.HHN. ML:0.9 2.356508E-5 0.1984 AML other m 2020-11-25T13:56:27.77
IV.TERO.HHE. ML:1.3 5.388203E-5 0.1408 AML other m 2020-11-25T13:56:28.42
IV.TERO.HHN. ML:1.3 5.775604E-5 0.1024 AML other m 2020-11-25T13:56:27.91
IV.TERO.HNN. ML:1.6 0.000126061865 0.6016 AML other m 2020-11-25T13:56:25.60
IV.ASSB.HHE. ML:1.2 3.7819485E-5 0.1408 AML other m 2020-11-25T13:56:30.76
IV.ASSB.HHN. ML:1 3.106371E-5 0.2432 AML other m 2020-11-25T13:56:30.36
IV.EL6.EHE. ML:1.3 5.0705505E-5 0.1408 AML other m 2020-11-25T13:56:32.44
IV.EL6.EHN. ML:1.4 6.0922775E-5 0.1408 AML other m 2020-11-25T13:56:32.04
IV.MOMA.HHE. ML:1 2.311527E-5 0.1216 AML other m 2020-11-25T13:56:33.27
IV.MOMA.HHN. ML:1 2.574025E-5 0.1792 AML other m 2020-11-25T13:56:33.78
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