Earthquake with magnitude of ML 1.7 on date 25-10-2021 and time 22:10:50 (Italy) in region 8 km W Monte Cavallo (MC)

A magnitude ML 1.7 earthquake occured in region: 8 km W Monte Cavallo (MC), on

  • 25-10-2021 20:10:50 (UTC)
  • 25-10-2021 22:10:50 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.004, 12.908 at 14 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 8 145 145
Serravalle di Chienti MC 9 1070 1215
Pieve Torina MC 13 1458 2673
Sellano PG 13 1079 3752
Valtopina PG 14 1398 5150
Muccia MC 14 915 6065
Nocera Umbra PG 15 5839 11904
Fiordimonte MC 15 202 12106
Pievebovigliana MC 16 866 12972
Sefro MC 16 422 13394
Visso MC 17 1107 14501
Foligno PG 17 57155 71656
Preci PG 18 724 72380
Trevi PG 19 8469 80849
Spello PG 19 8645 89494
Camerino MC 20 6974 96468
Ussita MC 20 444 96912

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Foligno (57155 inhabitants)
44 Km E of Perugia (166134 inhabitants)
54 Km NE of Terni (111501 inhabitants)
75 Km NW of Teramo (54892 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
92 Km NE of Viterbo (67173 inhabitants)
94 Km S of Fano (60888 inhabitants)
98 Km SE of Arezzo (99543 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 1.7 2021-10-25
20:10:50
43.0037 12.9083 14 2021-10-25
20:22:59
Sala Sismica INGV-Roma 96988291
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-25 20:10:50 ± 0.06
Latitude 43.0037 ± 0.0027
Longitude 12.9083 ± 0.0049
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96988291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 380
Semi-minor axis of confidence ellipse (meter) 201
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 266
Circular confidence region, given by single value of horizontal uncertainty (meter) 380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 33
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) 0.48653
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 18
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 96988291
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-25 20:22:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VAGA.HNZ. 2021-10-25T20:11:48.69 3.0 undecidable manual Sg 0.86 0
IV.VIVA.HHZ. 2021-10-25T20:11:30.50 3.0 undecidable manual S -2.52 0
IV.PIEI.HHZ. 2021-10-25T20:11:12.04 3.0 undecidable manual S -0.1 0
IV.CING.HHZ. 2021-10-25T20:11:06.57 0.3 undecidable manual S 29 0.4263 94 0.49 63
IV.MURB.HHZ. 2021-10-25T20:11:05.35 0.3 undecidable manual S 313 0.3813 95 0.6 59
IV.LNSS.HHZ. 2021-10-25T20:11:05.71 0.3 undecidable manual S 166 0.4119 94 0.06 69
IV.CAFI.HHZ. 2021-10-25T20:11:05.91 3.0 undecidable manual P -0.2 0
IV.EL6.EHZ. 2021-10-25T20:11:04.15 0.3 undecidable manual S 23 0.3543 95 0.19 68
IV.NARO.HHZ. 2021-10-25T20:11:03.42 3.0 negative manual P -0.44 0
IV.TERO.HHZ. 2021-10-25T20:11:03.21 3.0 negative manual P -0.91 0
IV.MMO1.EHZ. 2021-10-25T20:11:03.48 0.3 undecidable manual S 109 0.3229 96 0.45 65
IV.ATCC.EHZ. 2021-10-25T20:11:01.30 0.3 undecidable manual S 313 0.2671 98 -0.08 71
IV.PF6.EHZ. 2021-10-25T20:11:00.63 0.6 undecidable manual S 57 0.2482 99 -0.19 46
IV.ARVD.HHZ. 2021-10-25T20:11:00.72 3.0 negative manual P -0.17 0
IV.SNTG.HHZ. 2021-10-25T20:11:00.82 0.3 undecidable manual S 5 0.2527 99 -0.12 70
IV.CSP1.EHZ. 2021-10-25T20:11:00.74 0.3 undecidable manual S 68 0.2338 100 0.34 68
IV.NRCA.HHZ. 2021-10-25T20:11:00.15 0.3 undecidable manual S 138 0.2275 101 -0.06 71
IV.SMA1.EHZ. 2021-10-25T20:11:00.80 0.3 undecidable manual P 140 0.4865 93 0.08 68
IV.LNSS.HHZ. 2021-10-25T20:10:59.16 0.1 undecidable manual P 166 0.4119 94 -0.28 87
IV.CING.HHZ. 2021-10-25T20:10:59.55 0.1 undecidable manual P 29 0.4263 94 -0.14 90
IV.EL6.EHZ. 2021-10-25T20:10:58.29 0.1 undecidable manual P 23 0.3543 95 -0.17 90
IV.MURB.HHZ. 2021-10-25T20:10:58.73 0.1 undecidable manual P 313 0.3813 95 -0.19 90
IT.GNU.HGE. 2021-10-25T20:10:58.41 0.1 undecidable manual P 231 0.3184 96 0.57 82
IV.FEMA.HNZ. 2021-10-25T20:10:57.23 0.3 undecidable manual S 112 0.1115 125 0.21 71
IV.MMO1.EHZ. 2021-10-25T20:10:57.79 0.1 undecidable manual P 109 0.3229 96 -0.14 91
IV.MF5.EHZ. 2021-10-25T20:10:57.81 3.0 undecidable manual P -1.78 0
IV.MML1.EHZ. 2021-10-25T20:10:57.27 0.3 undecidable manual S 23 0.1196 122 0.07 72
IV.FDMO.HHZ. 2021-10-25T20:10:57.62 0.3 undecidable manual S 76 0.1349 117 0.01 73
IV.ATCC.EHZ. 2021-10-25T20:10:56.65 0.1 undecidable manual P 313 0.2671 98 -0.33 90
IV.MC2.EHZ. 2021-10-25T20:10:56.25 0.1 undecidable manual P 114 0.2248 101 -0.01 95
IV.PF6.EHZ. 2021-10-25T20:10:56.48 0.1 undecidable manual P 57 0.2482 99 -0.18 92
IT.MTCL.HGZ. 2021-10-25T20:10:56.10 0.3 undecidable manual S 98 0.0674 144 0.02 74
IV.SNTG.HHZ. 2021-10-25T20:10:56.46 0.3 undecidable manual P 5 0.2527 99 -0.26 68
IV.CSP1.EHZ. 2021-10-25T20:10:56.37 0.1 undecidable manual P 68 0.2338 100 -0.05 95
IV.NRCA.HHZ. 2021-10-25T20:10:56.12 0.1 undecidable manual P 138 0.2275 101 -0.18 92
IV.CESI.HHZ. 2021-10-25T20:10:55.36 0.3 undecidable manual S 295 0.0027 178 -0.09 74
IV.MML1.EHZ. 2021-10-25T20:10:54.53 0.1 undecidable manual P 23 0.1196 122 -0.04 97
IV.FDMO.HHZ. 2021-10-25T20:10:54.76 0.1 undecidable manual P 76 0.1349 117 -0.04 97
IV.FEMA.HNZ. 2021-10-25T20:10:54.57 0.1 undecidable manual P 112 0.1115 125 0.11 96
IV.CESI.HHZ. 2021-10-25T20:10:53.52 0.1 undecidable manual P 295 0.0027 178 -0.03 100
IT.MTCL.HGZ. 2021-10-25T20:10:53.93 0.1 undecidable manual P 98 0.0674 144 0.01 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHN. ML:1.7 0.000501 0.12 AML other m 2021-10-25T20:10:57.42
IV.MML1.HNN. ML:1.7 0.000523 0.2 AML other m 2021-10-25T20:10:57.42
IV.MML1.EHE. ML:1.9 0.0007185 0.2 AML other m 2021-10-25T20:10:57.53
IV.MML1.HNE. ML:1.9 0.000678 0.2 AML other m 2021-10-25T20:10:57.53
IV.FEMA.HNE. ML:1.8 0.0005835 0.38 AML other m 2021-10-25T20:10:57.39
IV.FEMA.HNN. ML:1.7 0.000457 1.26 AML other m 2021-10-25T20:10:58.65
IV.NRCA.HHE. ML:1.9 0.000394 0.72 AML other m 2021-10-25T20:11:00.33
IV.CSP1.EHN. ML:1.7 0.0002545 0.18 AML other m 2021-10-25T20:11:00.83
IV.CSP1.EHE. ML:1.7 0.000291 0.68 AML other m 2021-10-25T20:11:01.21
IV.NRCA.HHN. ML:1.8 0.0003925 0.1 AML other m 2021-10-25T20:11:01.69
IV.ATCC.EHN. ML:1.6 0.000163 1.36 AML other m 2021-10-25T20:11:02.04
IV.ATCC.EHE. ML:1.6 0.000176 0.1 AML other m 2021-10-25T20:11:02.20
IV.LNSS.HHN. ML:1.5 8.385E-5 0.46 AML other m 2021-10-25T20:11:06.48
IV.LNSS.HHE. ML:1.6 0.000108 0.14 AML other m 2021-10-25T20:11:07.21
IV.MURB.HHE. ML:2 0.000295 0.2 AML other m 2021-10-25T20:11:07.39
IV.MURB.HHN. ML:1.8 0.0001975 0.26 AML other m 2021-10-25T20:11:08.22
IV.SMA1.EHE. ML:1.2 3.96E-5 1.34 AML other m 2021-10-25T20:11:11.77
IV.SMA1.EHN. ML:1.3 4.645E-5 0.42 AML other m 2021-10-25T20:11:15.64
IV.CAFI.HHN. ML:1.2 1.805E-5 0.42 AML other m 2021-10-25T20:11:16.82
IV.CAFI.HHE. ML:1.3 2.39E-5 0.42 AML other m 2021-10-25T20:11:23.34
IV.VAGA.HNN. ML:3.4 0.0006485 0.76 AML other m 2021-10-25T20:12:20.53
IV.VAGA.HNE. ML:3.3 0.000596 0.76 AML other m 2021-10-25T20:12:20.53
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