Earthquake with magnitude of ML 0.9 on date 20-10-2021 and time 09:12:40 (UTC) in region 5 km W Monte Cavallo (MC)

A magnitude ML 0.9 earthquake occured in region: 5 km W Monte Cavallo (MC), on

  • 20-10-2021 09:12:40 (UTC)
  • 20-10-2021 11:12:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.984, 12.945 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 5 145 145
Serravalle di Chienti MC 10 1070 1215
Sellano PG 11 1079 2294
Pieve Torina MC 11 1458 3752
Visso MC 13 1107 4859
Fiordimonte MC 13 202 5061
Muccia MC 14 915 5976
Preci PG 14 724 6700
Pievebovigliana MC 14 866 7566
Ussita MC 16 444 8010
Valtopina PG 18 1398 9408
Sefro MC 18 422 9830
Fiastra MC 18 559 10389
Cerreto di Spoleto PG 18 1075 11464
Nocera Umbra PG 19 5839 17303
Acquacanina MC 20 121 17424
Castelsantangelo sul Nera MC 20 281 17705
Camerino MC 20 6974 24679
Trevi PG 20 8469 33148
Foligno PG 20 57155 90303

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km E of Foligno (57155 inhabitants)
47 Km E of Perugia (166134 inhabitants)
53 Km NE of Terni (111501 inhabitants)
72 Km NW of Teramo (54892 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
96 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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 2021-10-20
09:12:40
42.9838 12.9447 13 2021-10-20
09:22:55
Sala Sismica INGV-Roma 96796161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-20 09:12:40 ± 0.07
Latitude 42.9838 ± 0.0036
Longitude 12.9447 ± 0.0049
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96796161

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 389
Semi-minor axis of confidence ellipse (meter) 71
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 72
Circular confidence region, given by single value of horizontal uncertainty (meter) 390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 16
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) 0.29408
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 96796161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-20 09:22:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIZZ.HHZ. 2021-10-20T09:13:32.20 3.0 undecidable manual Sn -2.55 0
IV.VENL.EHZ. 2021-10-20T09:13:30.55 3.0 undecidable manual Sg 11.84 0
SL.LJU.BHZ. 2021-10-20T09:13:27.77 3.0 undecidable manual Sn -8.01 0
IV.MTGR.HHZ. 2021-10-20T09:13:26.34 3.0 undecidable manual Sn -8.78 0
IV.DGI.HHZ. 2021-10-20T09:13:13.99 3.0 undecidable manual Sg 4.41 0
FR.AJAC.HHZ.00 2021-10-20T09:13:11.47 3.0 undecidable manual Sg 1.96 0
IV.AGLI.HHZ. 2021-10-20T09:13:03.14 3.0 undecidable manual Sn -4.26 0
IV.FIU.EHZ. 2021-10-20T09:13:03.90 3.0 undecidable manual Sn -2.97 0
IV.ISPIC.EHZ. 2021-10-20T09:13:02.83 3.0 negative manual Pn 7.3 0
IT.PNAL.HNZ. 2021-10-20T09:12:56.15 3.0 undecidable manual Pg 18.360001 0
IV.CADC.EHZ. 2021-10-20T09:12:55.04 3.0 negative manual Pg 20.51 0
IV.MRB1.HHZ. 2021-10-20T09:12:53.48 3.0 undecidable manual Sn -3.48 0
IV.GAVE.HNE. 2021-10-20T09:12:52.05 0.6 undecidable manual S 187 0.2941 94 0.29 46
IV.CSNT.HHZ. 2021-10-20T09:12:52.43 3.0 undecidable manual Sg 0.37 0
IV.RIBO.EHZ.01 2021-10-20T09:12:52.00 3.0 undecidable manual Sg 3 0
IV.CIMA.HNZ. 2021-10-20T09:12:52.07 3.0 undecidable manual Sg 2.39 0
IV.SNTG.HHN. 2021-10-20T09:12:51.19 0.6 undecidable manual S 359 0.2707 95 0.1 48
IV.MC2.EHZ. 2021-10-20T09:12:49.14 0.3 undecidable manual S 112 0.1925 100 0.35 69
ST.DOSS.HHZ. 2021-10-20T09:12:49.87 3.0 negative manual Pg 14 0
IV.ASSB.HHZ. 2021-10-20T09:12:49.71 0.3 undecidable manual S 286 0.2167 97 0.21 71
IV.APEC.HHZ. 2021-10-20T09:12:49.28 3.0 undecidable manual Sg -0.47 0
GU.RNCA.HHZ. 2021-10-20T09:12:48.38 3.0 undecidable manual Pg 16.58 0
IV.NRCA.HNN. 2021-10-20T09:12:48.68 0.6 undecidable manual S 140 0.1952 99 -0.17 48
IV.MML1.EHZ. 2021-10-20T09:12:47.24 0.3 undecidable manual S 9 0.1313 113 0.21 72
IV.SNTG.HHN. 2021-10-20T09:12:46.27 0.1 undecidable manual P 359 0.2707 95 -0.38 89
IV.FDMO.HHZ. 2021-10-20T09:12:46.45 0.6 undecidable manual S 63 0.1169 118 -0.2 48
IV.GAVE.HNE. 2021-10-20T09:12:46.98 0.1 undecidable manual P 187 0.2941 94 -0.06 95
IV.MC2.EHZ. 2021-10-20T09:12:45.31 0.1 undecidable manual P 112 0.1925 100 -0.02 98
IV.NRCA.HNN. 2021-10-20T09:12:45.29 0.1 undecidable manual P 140 0.1952 99 -0.07 97
IT.MTCL.HGZ. 2021-10-20T09:12:45.08 0.6 undecidable manual S 76 0.0414 155 -0.01 50
IV.ASSB.HHZ. 2021-10-20T09:12:45.62 0.1 undecidable manual P 286 0.2167 97 -0.12 96
IV.FIR.HHZ. 2021-10-20T09:12:45.14 3.0 undecidable manual Sn -9.99 0
IV.FDMO.HHZ. 2021-10-20T09:12:44.14 0.1 undecidable manual P 63 0.1169 118 0.05 99
IV.MML1.EHZ. 2021-10-20T09:12:44.40 0.1 undecidable manual P 9 0.1313 113 0.09 98
IV.GIZZ.HHZ. 2021-10-20T09:12:44.68 3.0 positive manual Pn 6.18 0
IT.MTCL.HGZ. 2021-10-20T09:12:43.09 0.1 undecidable manual P 76 0.0414 155 -0.1 100
IT.PLTA.HNZ. 2021-10-20T09:12:42.65 3.0 undecidable manual Sn -9.38 0
IV.SARZ.HHZ. 2021-10-20T09:12:40.48 3.0 undecidable manual Pn 5.49 0
OT.OT17.EHZ. 2021-10-20T09:12:38.10 3.0 positive manual Pg 20.08 0
IV.SCHR.EHZ. 2021-10-20T09:12:34.68 3.0 negative manual Pn 6.11 0
IV.MAGA.HHZ. 2021-10-20T09:12:33.32 3.0 positive manual Pn -2.8 0
IX.PGN3.HHZ.02 2021-10-20T09:12:27.63 3.0 undecidable manual Pn 2.98 0
IV.MGR.HHZ. 2021-10-20T09:12:26.52 3.0 undecidable manual Pn 0.74 0
IV.CMPR.HHZ. 2021-10-20T09:12:26.97 3.0 negative manual Pn 3.76 0
IV.VVLD.HHZ. 2021-10-20T09:12:19.50 3.0 undecidable manual Pg 9.68 0
IV.RIBO.EHZ.01 2021-10-20T09:12:16.41 3.0 undecidable manual Pg 3.61 0
IV.CSNT.HHZ. 2021-10-20T09:12:11.66 3.0 negative manual P -2.86 0
IV.TOLF.HHZ. 2021-10-20T09:12:05.78 3.0 undecidable manual P -2.85 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SCHR.EHN. ML:3 5.47E-5 0.1 AML other m 2021-10-20T09:12:36.12
IV.MAGA.HHE. ML:3.3 0.000152 0.06 AML other m 2021-10-20T09:12:38.52
IV.MAGA.HHN. ML:3.1 0.00010495 0.06 AML other m 2021-10-20T09:12:38.53
IV.SCHR.EHE. ML:2.8 3.53E-5 0.74 AML other m 2021-10-20T09:12:44.82
IV.CESI.HHN. ML:0.7 6.895E-5 0.44 AML other m 2021-10-20T09:12:45.50
IV.CESI.HHE. ML:0.7 6.65E-5 0.24 AML other m 2021-10-20T09:12:45.50
IV.FDMO.HHN. ML:1.2 0.0001375 0.18 AML other m 2021-10-20T09:12:46.66
IV.FDMO.HHE. ML:1.2 0.0001525 0.38 AML other m 2021-10-20T09:12:46.65
IV.MML1.EHE. ML:0.9 7.71E-5 0.22 AML other m 2021-10-20T09:12:47.43
IV.MML1.EHN. ML:0.6 3.795E-5 0.88 AML other m 2021-10-20T09:12:47.46
FR.AJAC.HHE.00 ML:3.1 9.745E-5 1.26 AML other m 2021-10-20T09:13:14.02
FR.AJAC.HHN.00 ML:3.1 9.275E-5 1.5 AML other m 2021-10-20T09:13:14.00
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download