Earthquake with magnitude of ML 0.8 on date 22-10-2021 and time 08:38:41 (Italy) in region 3 km NE Monte Cavallo (MC)

A magnitude ML 0.8 earthquake occured in region: 3 km NE Monte Cavallo (MC), on

  • 22-10-2021 06:38:41 (UTC)
  • 22-10-2021 08:38:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.011, 13.028 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 3 145 145
Pieve Torina MC 4 1458 1603
Fiordimonte MC 6 202 1805
Pievebovigliana MC 8 866 2671
Muccia MC 8 915 3586
Serravalle di Chienti MC 9 1070 4656
Visso MC 10 1107 5763
Fiastra MC 11 559 6322
Ussita MC 12 444 6766
Acquacanina MC 12 121 6887
Camerino MC 14 6974 13861
Preci PG 15 724 14585
Sellano PG 16 1079 15664
Bolognola MC 16 142 15806
Castelsantangelo sul Nera MC 16 281 16087
Sefro MC 16 422 16509
Pioraco MC 19 1134 17643

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Foligno (57155 inhabitants)
53 Km E of Perugia (166134 inhabitants)
59 Km NE of Terni (111501 inhabitants)
68 Km NW of Teramo (54892 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
79 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
100 Km NE of Viterbo (67173 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 0.8 2021-10-22
06:38:41
43.0107 13.028 5 2021-10-22
06:44:03
Sala Sismica INGV-Roma 96868641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-22 06:38:41 ± 0.11
Latitude 43.0107 ± 0.0027
Longitude 13.0280 ± 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 96868641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 134
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 140
Circular confidence region, given by single value of horizontal uncertainty (meter) 360
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 72
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.02698
Epicentral distance of station farthest from the epicenter (degree) 0.24551
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 96868641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-22 06:44:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MMO1.HNE. 2021-10-22T06:38:50.86 0.3 undecidable manual S 117 0.2455 101 0.12 71
IV.PF6.EHN. 2021-10-22T06:38:48.05 0.1 undecidable manual S 44 0.1754 106 -0.08 97
IV.NRCA.HHZ. 2021-10-22T06:38:48.83 0.6 undecidable manual S 160 0.188 105 0.25 47
IV.CSP1.EHZ. 2021-10-22T06:38:47.63 0.3 undecidable manual S 58 0.1529 108 0.36 69
IV.MMO1.HNE. 2021-10-22T06:38:46.41 0.1 undecidable manual P 117 0.2455 101 -0.25 92
IV.CESI.HHZ. 2021-10-22T06:38:45.24 0.6 undecidable manual S 266 0.0899 118 0.18 48
IV.NRCA.HHZ. 2021-10-22T06:38:45.40 0.6 negative manual P 160 0.188 105 -0.02 49
IV.CSP1.EHZ. 2021-10-22T06:38:44.75 0.6 positive manual P 58 0.1529 108 0.09 49
IV.MC2.EHZ. 2021-10-22T06:38:44.86 1.0 positive manual P 130 0.1538 108 0.16 24
IV.PF6.EHN. 2021-10-22T06:38:44.86 0.1 undecidable manual P 44 0.1754 106 -0.3 92
IV.CESI.HHZ. 2021-10-22T06:38:43.57 0.1 positive manual P 266 0.0899 118 0.18 96
IV.FEMA.HNE. 2021-10-22T06:38:43.84 0.3 undecidable manual S 162 0.0513 134 0.01 75
IV.MML1.EHZ. 2021-10-22T06:38:43.89 0.6 negative manual P 338 0.1106 114 0.1 49
IV.FDMO.HHZ. 2021-10-22T06:38:43.97 0.6 undecidable manual S 59 0.0504 134 0.17 49
IV.FEMA.HNE. 2021-10-22T06:38:42.59 0.1 undecidable manual P 162 0.0513 134 -0.09 99
IT.MTCL.HGZ. 2021-10-22T06:38:42.25 0.1 negative manual P 231 0.027 151 -0.09 99
IV.FDMO.HHZ. 2021-10-22T06:38:42.63 0.1 positive manual P 59 0.0504 134 -0.03 100
IT.MTCL.HGZ. 2021-10-22T06:38:42.96 0.6 undecidable manual S 231 0.027 151 -0.29 48
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.8 0.0001034 1.58 AML other m 2021-10-22T06:38:46.07
IV.MML1.EHN. ML:0.6 5.31E-5 0.18 AML other m 2021-10-22T06:38:46.39
IV.CESI.HHN. ML:0.8 0.0001029 0.24 AML other m 2021-10-22T06:38:46.67
IV.MML1.EHE. ML:0.5 3.87E-5 1.58 AML other m 2021-10-22T06:38:47.93
IV.NRCA.HHE. ML:0.8 5.495E-5 0.18 AML other m 2021-10-22T06:38:49.77
IV.NRCA.HHN. ML:0.9 6.17E-5 0.42 AML other m 2021-10-22T06:38:50.89
IV.GAVE.EHE. ML:1 3.4E-5 0.54 AML other m 2021-10-22T06:38:54.86
IV.GAVE.EHN. ML:1 3.965E-5 1.58 AML other m 2021-10-22T06:38:55.88
IV.FDMO.HHE. ML:0 0.000138303885 0.08 AML other m 2021-10-22T06:38:44.25
IV.FDMO.HHN. ML:0 0.0001284317 0.08 AML other m 2021-10-22T06:38:44.30
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