Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 17-10-2021 and time 14:17:29 (UTC) 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) 43.0120, 12.9320 at 5 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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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 10 1458 2673
Muccia MC 12 915 3588
Fiordimonte MC 13 202 3790
Sellano PG 14 1079 4869
Pievebovigliana MC 14 866 5735
Sefro MC 15 422 6157
Valtopina PG 15 1398 7555
Visso MC 16 1107 8662
Nocera Umbra PG 16 5839 14501
Preci PG 17 724 15225
Camerino MC 18 6974 22199
Ussita MC 18 444 22643
Fiastra MC 19 559 23202
Pioraco MC 19 1134 24336
Foligno PG 20 57155 81491
Fiuminata MC 20 1402 82893
Acquacanina MC 20 121 83014

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 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)
82 Km SW of Ancona (100861 inhabitants)
83 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
95 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
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.2 2021-10-17
14:17:29		 43.0125 12.9322 5 2022-03-30
13:04:13		 Bollettino Sismico Italiano INGV 96998281
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 ± 0.11
Latitude 43.0125 ± 0.0036
Longitude 12.9322 ± 0.0049
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96998281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 398
Semi-minor axis of confidence ellipse (meter) 91
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 346
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33994
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 96998281
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-26 09:04:20

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(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-10-17T14:17:42.06 0.1 undecidable manual S 21 37.7289 98 -0.44 86
IV.GAVE.EHZ. 2021-10-17T14:17:41.62 0.3 undecidable manual S 185 35.6421 98 -0.17 69
IV.CSP1.EHZ. 2021-10-17T14:17:38.09 0.3 undecidable manual S 68 23.754 102 0.35 67
IV.ASSB.HHZ. 2021-10-17T14:17:37.48 0.1 undecidable manual S 279 22.4553 103 0.2 93
IV.GAVE.EHZ. 2021-10-17T14:17:36.32 0.1 undecidable manual P 185 35.6421 98 -0.19 91
IV.EL6.EHZ. 2021-10-17T14:17:36.27 0.1 undecidable manual P 21 37.7289 98 -0.65 80
IV.SNTG.HHE. 2021-10-17T14:17:35.47 0.1 undecidable manual P 1 26.9508 101 0.69 80
IV.CSP1.EHZ. 2021-10-17T14:17:34.06 0.1 undecidable manual P 68 23.754 102 -0.11 95
IV.FDMO.HHZ. 2021-10-17T14:17:34.13 0.1 undecidable manual S 78 12.876 112 0.03 98
IV.MC2.EHZ. 2021-10-17T14:17:34.17 0.1 undecidable manual P 118 23.6541 102 0.03 96
IV.ASSB.HHZ. 2021-10-17T14:17:33.92 0.1 undecidable manual P 279 22.4553 103 0.02 96
IV.MML1.EHZ. 2021-10-17T14:17:33.77 0.1 undecidable manual S 16 11.6772 114 0.06 98
IV.FEMA.HNE. 2021-10-17T14:17:33.69 0.1 undecidable manual S 120 11.0778 115 0.17 95
IV.FDMO.HHZ. 2021-10-17T14:17:32.14 0.1 undecidable manual P 78 12.876 112 0.08 97
IV.CESI.HHZ. 2021-10-17T14:17:31.14 0.1 undecidable manual S 250 2.3976 155 -0.12 98
IT.MTCL.HGZ. 2021-10-17T14:17:31.86 0.1 undecidable manual S 111 5.7942 132 -0.13 97
IV.MML1.EHZ. 2021-10-17T14:17:31.88 0.1 positive manual P 16 11.6772 114 0.04 98
IV.FEMA.HNE. 2021-10-17T14:17:31.87 0.1 undecidable manual P 120 11.0778 115 0.14 96
IV.CESI.HHZ. 2021-10-17T14:17:30.44 0.1 undecidable manual P 250 2.3976 155 0.01 100
IT.MTCL.HGZ. 2021-10-17T14:17:30.88 0.1 undecidable manual P 111 5.7942 132 0.03 99
IV.MOMA.HHZ. 2021-10-17T14:17:28.64 3.0 negative manual P -8.17 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MML1.EHN. ML:1.5 0.0004125 0.18 AML other m 2021-10-17T14:17:34.13
IV.MML1.HNN. ML:1.5 0.00040849999999999995 0.18 AML other m 2021-10-17T14:17:34.13
IV.MML1.EHE. ML:1.2 0.0002415 0.18 AML other m 2021-10-17T14:17:34.20
IV.MML1.HNE. ML:1.2 0.00023500000000000002 0.18 AML other m 2021-10-17T14:17:34.29
IV.FDMO.HHN. ML:0.8 0.00008824999999999999 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
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