Earthquake with magnitude of ML 1.5 on date 20-09-2020 and time 05:25:36 (Italy) in region 4 km SW Monte Cavallo (MC)

A magnitude ML 1.5 earthquake occured in region: 4 km SW Monte Cavallo (MC), on

  • 20-09-2020 03:25:36 (UTC)
  • 20-09-2020 05:25:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.96, 12.97 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.

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
Sellano PG 9 1079 1224
Visso MC 10 1107 2331
Preci PG 11 724 3055
Pieve Torina MC 11 1458 4513
Serravalle di Chienti MC 13 1070 5583
Fiordimonte MC 13 202 5785
Ussita MC 14 444 6229
Pievebovigliana MC 15 866 7095
Muccia MC 15 915 8010
Cerreto di Spoleto PG 16 1075 9085
Castelsantangelo sul Nera MC 16 281 9366
Fiastra MC 17 559 9925
Acquacanina MC 18 121 10046

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
50 Km E of Perugia (166134 inhabitants)
52 Km NE of Terni (111501 inhabitants)
69 Km W of Teramo (54892 inhabitants)
76 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
93 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 1.5 2020-09-20
03:25:36
42.96 12.97 11 2020-09-20
03:57:42
Sala Sismica INGV-Roma 83044141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-20 03:25:36 ± 0.04
Latitude 42.96 ± 0.00
Longitude 12.97 ± 0.00
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 83044141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 411
Semi-minor axis of confidence ellipse (meter) 290
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 11
Circular confidence region, given by single value of horizontal uncertainty (meter) 410
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.03777
Epicentral distance of station farthest from the epicenter (degree) 0.41099
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 83044141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-20 03:57:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARRO.EHZ. 2020-09-20T03:25:45.14 0.3 undecidable manual P 202 0.411 50 -0.02 72
IT.FOPC.HGZ. 2020-09-20T03:25:45.20 0.6 undecidable manual S 273 0.1979 50 0.16 49
IV.EL6.EHZ. 2020-09-20T03:25:44.60 0.3 undecidable manual P 14 0.3795 50 -0.02 72
IV.MF5.EHZ. 2020-09-20T03:25:44.62 0.3 undecidable manual P 86 0.357 50 0.39 67
IV.MC2.EHZ. 2020-09-20T03:25:44.25 0.6 undecidable manual S 107 0.1655 50 0.17 49
IV.GUMA.HHZ. 2020-09-20T03:25:43.17 0.3 undecidable manual P 69 0.2833 50 0.2 71
IV.ATCC.EHZ. 2020-09-20T03:25:43.77 0.3 undecidable manual P 313 0.331 50 -0.01 73
IV.NRCA.HHZ. 2020-09-20T03:25:43.67 0.6 undecidable manual S 141 0.1646 50 -0.37 47
IV.SNTG.HHZ. 2020-09-20T03:25:43.02 0.3 undecidable manual P 355 0.2941 50 -0.15 72
IV.MOMA.HHZ. 2020-09-20T03:25:43.90 0.6 undecidable manual P 242 0.3345 50 0.05 48
IV.ASSB.HHZ. 2020-09-20T03:25:42.12 0.3 undecidable manual P 290 0.2437 50 -0.18 72
IV.FDMO.HHZ. 2020-09-20T03:25:42.23 0.6 undecidable manual S 48 0.1124 131 -0.22 49
IV.GAVE.EHZ. 2020-09-20T03:25:42.79 0.3 undecidable manual P 192 0.2752 50 -0.05 73
IV.PF6.EHZ. 2020-09-20T03:25:42.04 0.3 undecidable manual P 42 0.2392 50 -0.18 72
IV.MMO1.EHZ. 2020-09-20T03:25:42.48 0.3 undecidable manual P 103 0.2662 50 -0.2 71
IV.FEMA.HNZ. 2020-09-20T03:25:41.09 0.3 undecidable manual S 89 0.0558 150 0.02 77
IV.CESI.HHZ. 2020-09-20T03:25:41.38 0.6 undecidable manual S 311 0.0665 146 0.1 50
IT.FOPC.HGZ. 2020-09-20T03:25:41.53 0.3 undecidable manual P 273 0.1979 50 0.02 75
IV.MC2.EHZ. 2020-09-20T03:25:41.29 0.3 undecidable manual P 107 0.1655 50 0.33 71
IV.CSP1.EHZ. 2020-09-20T03:25:41.79 0.3 undecidable manual P 52 0.2131 50 0.01 75
IV.NRCA.HHZ. 2020-09-20T03:25:40.75 0.3 undecidable manual P 141 0.1646 50 -0.19 73
IV.FDMO.HHZ. 2020-09-20T03:25:40.00 0.3 undecidable manual P 48 0.1124 131 -0.02 76
IT.MTCL.HGZ. 2020-09-20T03:25:40.51 0.6 undecidable manual S 30 0.0378 159 -0.26 49
IT.MTCL.HGZ. 2020-09-20T03:25:39.04 0.3 undecidable manual P 30 0.0378 159 -0.01 77
IV.FEMA.HNZ. 2020-09-20T03:25:39.36 0.3 undecidable manual P 89 0.0558 150 0.14 75
IV.CESI.HHZ. 2020-09-20T03:25:39.48 0.1 undecidable manual P 311 0.0665 146 0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HNE. ML:1.7 0.000715 0.1 AML other m 2020-09-20T03:25:41.49
IV.CESI.HHE. ML:1.8 0.0008825 0.1 AML other m 2020-09-20T03:25:41.49
IV.CESI.HHN. ML:2 0.00149 0.1 AML other m 2020-09-20T03:25:41.55
IV.CESI.HNN. ML:2.1 0.00172 0.12 AML other m 2020-09-20T03:25:41.50
IV.FDMO.HHE. ML:1.4 0.0002885 0.22 AML other m 2020-09-20T03:25:42.47
IV.FDMO.HHN. ML:1.5 0.0003065 0.1 AML other m 2020-09-20T03:25:42.60
IV.NRCA.HHN. ML:1.3 0.000152 0.48 AML other m 2020-09-20T03:25:43.76
IV.NRCA.HHE. ML:1.2 0.0001245 0.08 AML other m 2020-09-20T03:25:44.83
IV.CSP1.EHN. ML:1.8 0.000429 1.34 AML other m 2020-09-20T03:25:45.72
IV.CSP1.EHE. ML:1.7 0.000301 0.46 AML other m 2020-09-20T03:25:45.75
IV.ASSB.HHE. ML:1.3 9.995E-5 0.28 AML other m 2020-09-20T03:25:46.35
IV.ASSB.HHN. ML:1.5 0.000154 0.16 AML other m 2020-09-20T03:25:46.42
IV.GAVE.EHE. ML:1.6 0.0001665 0.8 AML other m 2020-09-20T03:25:47.73
IV.SNTG.HHN. ML:1.1 5.62E-5 0.4 AML other m 2020-09-20T03:25:48.46
IV.SNTG.HHE. ML:1.1 4.865E-5 0.16 AML other m 2020-09-20T03:25:48.45
IV.GUMA.HHE. ML:1.6 0.0001745 0.22 AML other m 2020-09-20T03:25:48.32
IV.GUMA.HHN. ML:1.6 0.0001925 0.24 AML other m 2020-09-20T03:25:48.36
IV.GAVE.EHN. ML:1.5 0.0001505 0.18 AML other m 2020-09-20T03:25:48.69
IV.MOMA.HHE. ML:1.2 6.49E-5 0.18 AML other m 2020-09-20T03:25:50.43
IV.MOMA.HHN. ML:1.1 4.31E-5 1.28 AML other m 2020-09-20T03:25:50.73
IV.EL6.EHN. ML:1.5 9.285E-5 0.46 AML other m 2020-09-20T03:25:51.15
IV.EL6.EHE. ML:1.5 0.0001105 0.48 AML other m 2020-09-20T03:25:51.15
IV.ARRO.EHE. ML:1.1 3.28E-5 0.94 AML other m 2020-09-20T03:25:52.83
IV.ARRO.EHN. ML:1.1 3.515E-5 0.16 AML other m 2020-09-20T03:25:53.05
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