Earthquake with magnitude of ML 1.2 on date 17-10-2021 and time 16:17:29 (Italy) in region 6 km W Monte Cavallo (MC)

A magnitude ML 1.2 earthquake occured in region: 6 km W Monte Cavallo (MC), on

  • 17-10-2021 14:17:29 (UTC)
  • 17-10-2021 16:17:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.01, 12.929 at 5 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 6 145 145
Serravalle di Chienti MC 7 1070 1215
Pieve Torina MC 11 1458 2673
Muccia MC 12 915 3588
Sellano PG 13 1079 4667
Fiordimonte MC 14 202 4869
Pievebovigliana MC 14 866 5735
Valtopina PG 15 1398 7133
Sefro MC 15 422 7555
Visso MC 16 1107 8662
Nocera Umbra PG 16 5839 14501
Preci PG 17 724 15225
Camerino MC 18 6974 22199
Ussita MC 19 444 22643
Fiastra MC 19 559 23202
Foligno PG 19 57155 80357
Pioraco MC 19 1134 81491
Fiuminata MC 20 1402 82893

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km E of Foligno (57155 inhabitants)
45 Km E of Perugia (166134 inhabitants)
55 Km NE of Terni (111501 inhabitants)
74 Km NW of Teramo (54892 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
99 Km SE of Arezzo (99543 inhabitants)
100 Km S of Pesaro (94582 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 1.2 2021-10-17
14:17:29
43.0103 12.9292 5 2021-10-17
14:22:12
Sala Sismica INGV-Roma 96684991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-17 14:17:29 ± 0.08
Latitude 43.0103 ± 0.0027
Longitude 12.9292 ± 0.0037
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96684991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 90
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 148
Circular confidence region, given by single value of horizontal uncertainty (meter) 290
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.01889
Epicentral distance of station farthest from the epicenter (degree) 0.34264
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 96684991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-17 14:22:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-10-17T14:17:42.29 0.3 undecidable manual S 21 0.3426 98 -0.34 66
IV.GAVE.EHZ. 2021-10-17T14:17:41.62 0.3 undecidable manual S 185 0.3193 98 -0.1 69
IV.CSP1.EHZ. 2021-10-17T14:17:38.09 0.3 undecidable manual S 68 0.2167 102 0.23 69
IV.ASSB.HHZ. 2021-10-17T14:17:37.52 0.3 undecidable manual S 279 0.2005 103 0.3 68
IV.MC2.EHZ. 2021-10-17T14:17:37.85 0.3 undecidable manual S 117 0.214 102 0.11 71
IV.GAVE.EHZ. 2021-10-17T14:17:36.32 0.1 undecidable manual P 185 0.3193 98 -0.16 92
IV.EL6.EHZ. 2021-10-17T14:17:36.49 1.0 negative manual P 21 0.3426 98 -0.51 21
IV.MC2.EHZ. 2021-10-17T14:17:34.27 0.1 undecidable manual P 117 0.214 102 0.09 95
IV.CSP1.EHZ. 2021-10-17T14:17:34.12 0.6 positive manual P 68 0.2167 102 -0.12 47
IV.FDMO.HHZ. 2021-10-17T14:17:34.24 0.6 undecidable manual S 77 0.1187 111 0.04 49
IV.ASSB.HHZ. 2021-10-17T14:17:33.91 0.1 undecidable manual P 279 0.2005 103 0.04 96
IV.MML1.EHZ. 2021-10-17T14:17:33.89 0.3 undecidable manual S 17 0.1079 113 0.08 73
IV.FDMO.HHZ. 2021-10-17T14:17:32.17 0.3 positive manual P 77 0.1187 111 0.04 73
IV.MML1.EHZ. 2021-10-17T14:17:31.95 0.1 positive manual P 17 0.1079 113 0.04 98
IV.CESI.HHZ. 2021-10-17T14:17:31.09 0.3 undecidable manual S 253 0.0189 158 -0.12 73
IV.CESI.HHZ. 2021-10-17T14:17:30.41 0.1 undecidable manual P 253 0.0189 158 0 100
IV.MOMA.HHZ. 2021-10-17T14:17:28.64 0.6 negative manual P 0.3345 -8.17 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0 0.001675 0.08 AML other m 2021-10-17T14:17:31.21
IV.CESI.HNN. ML:0 0.00159 1.4 AML other m 2021-10-17T14:17:31.21
IV.CESI.HNE. ML:0 0.001385 0.78 AML other m 2021-10-17T14:17:31.39
IV.CESI.HHE. ML:0 0.0015 0.8 AML other m 2021-10-17T14:17:31.38
IV.MML1.HNN. ML:1.5 0.0004085 0.18 AML other m 2021-10-17T14:17:34.13
IV.MML1.EHN. ML:1.5 0.0004125 0.18 AML other m 2021-10-17T14:17:34.13
IV.MML1.HNE. ML:1.2 0.000235 0.18 AML other m 2021-10-17T14:17:34.29
IV.MML1.EHE. ML:1.2 0.0002415 0.18 AML other m 2021-10-17T14:17:34.20
IV.FDMO.HHN. ML:0.8 8.825E-5 0.88 AML other m 2021-10-17T14:17:34.48
IV.FDMO.HHE. ML:0.9 0.0001069 0.24 AML other m 2021-10-17T14:17:34.60
IV.ASSB.HHE. ML:1.2 0.0001235 0.56 AML other m 2021-10-17T14:17:37.76
IV.ASSB.HHN. ML:1.4 0.000189 0.14 AML other m 2021-10-17T14:17:37.88
IV.MOMA.HHE. ML:0.9 3.07E-5 0.5 AML other m 2021-10-17T14:17:39.68
IV.MOMA.HHN. ML:0.8 2.66E-5 0.06 AML other m 2021-10-17T14:17:39.92
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