Earthquake with magnitude of ML 0.9 on date 23-10-2020 and time 11:12:43 (UTC) in region 3 km W Monte Cavallo (MC)

A magnitude ML 0.9 earthquake occured in region: 3 km W Monte Cavallo (MC), on

  • 23-10-2020 11:12:43 (UTC)
  • 23-10-2020 13:12:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43, 12.97 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.

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 3 145 145
Serravalle di Chienti MC 8 1070 1215
Pieve Torina MC 9 1458 2673
Fiordimonte MC 11 202 2875
Muccia MC 11 915 3790
Pievebovigliana MC 12 866 4656
Visso MC 12 1107 5763
Sellano PG 12 1079 6842
Preci PG 14 724 7566
Ussita MC 15 444 8010
Fiastra MC 16 559 8569
Sefro MC 17 422 8991
Acquacanina MC 17 121 9112
Camerino MC 18 6974 16086
Valtopina PG 19 1398 17484
Castelsantangelo sul Nera MC 19 281 17765
Nocera Umbra PG 19 5839 23604

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
49 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
71 Km NW of Teramo (54892 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
82 Km SW of Ancona (100861 inhabitants)
94 Km S of Fano (60888 inhabitants)
95 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 2020-10-23
11:12:43
43 12.97 12 2020-10-23
11:33:23
Sala Sismica INGV-Roma 84054061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-23 11:12:43 ± 0.13
Latitude 43.00 ± 0.01
Longitude 12.97 ± 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 84054061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 576
Semi-minor axis of confidence ellipse (meter) 497
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 188
Circular confidence region, given by single value of horizontal uncertainty (meter) 580
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 213
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.25811
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 84054061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-23 11:33:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-10-23T11:13:03.34 3.0 undecidable manual S -0.19 0
IV.SNTG.HHZ. 2020-10-23T11:12:53.65 0.3 undecidable manual S 356 0.2581 93 0.13 70
IV.ASSB.HHZ. 2020-10-23T11:12:52.31 0.3 undecidable manual S 281 0.2293 94 -0.36 67
IV.CSP1.EHZ. 2020-10-23T11:12:51.77 0.1 undecidable manual S 62 0.1979 95 0.02 97
IV.MML1.EHZ. 2020-10-23T11:12:49.32 0.1 undecidable manual S 100
IV.ASSB.HHZ. 2020-10-23T11:12:49.04 0.1 undecidable manual P 281 0.2293 94 0.28 92
IV.SNTG.HHZ. 2020-10-23T11:12:49.05 0.3 undecidable manual P 356 0.2581 93 -0.2 69
IV.CSP1.EHZ. 2020-10-23T11:12:48.31 0.1 undecidable manual P 62 0.1979 95 0.08 97
IV.FEMA.HNZ. 2020-10-23T11:12:48.05 0.3 undecidable manual S 100
IV.FDMO.HHZ. 2020-10-23T11:12:48.68 0.1 undecidable manual S 66 0.0962 123 -0.19 95
IV.CESI.HHZ. 2020-10-23T11:12:47.79 0.1 undecidable manual S 279 0.0459 150 -0.05 100
IV.MML1.EHZ. 2020-10-23T11:12:47.08 0.1 undecidable manual P 100
IV.MTCL.HGZ. 2020-10-23T11:12:47.42 0.3 undecidable manual S 100
IV.CESI.HHZ. 2020-10-23T11:12:46.08 0.1 undecidable manual P 279 0.0459 150 0.11 98
IV.FEMA.HNZ. 2020-10-23T11:12:46.33 0.1 undecidable manual P 100
IV.FDMO.HHZ. 2020-10-23T11:12:46.61 0.1 undecidable manual P 66 0.0962 123 0.04 99
IV.MTCL.HGZ. 2020-10-23T11:12:45.81 0.1 undecidable manual P 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.7 6.51E-5 1.44 AML other m 2020-10-23T11:12:47.09
IV.CESI.HHN. ML:0.8 9.22E-5 1.84 AML other m 2020-10-23T11:12:47.94
IV.FDMO.HHN. ML:1 0.0001185 1.8 AML other m 2020-10-23T11:12:48.91
IV.FDMO.HHE. ML:0.9 8.895E-5 1.6 AML other m 2020-10-23T11:12:49.09
IV.CSP1.EHN. ML:0 6.890724E-5 0.1856 AML other m 2020-10-23T11:12:52.36
IV.CSP1.EHE. ML:0 6.7159905E-5 0.1984 AML other m 2020-10-23T11:12:52.65
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