Earthquake with magnitude of ML 0.4 on date 15-10-2021 and time 18:19:33 (Italy) in region 4 km W Monte Cavallo (MC)

A magnitude ML 0.4 earthquake occured in region: 4 km W Monte Cavallo (MC), on

  • 15-10-2021 16:19:33 (UTC)
  • 15-10-2021 18:19:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.008, 12.962 at 11 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 4 145 145
Serravalle di Chienti MC 7 1070 1215
Pieve Torina MC 8 1458 2673
Muccia MC 11 915 3588
Fiordimonte MC 11 202 3790
Pievebovigliana MC 12 866 4656
Visso MC 13 1107 5763
Sellano PG 14 1079 6842
Sefro MC 16 422 7264
Preci PG 16 724 7988
Ussita MC 16 444 8432
Fiastra MC 16 559 8991
Camerino MC 17 6974 15965
Acquacanina MC 18 121 16086
Valtopina PG 18 1398 17484
Nocera Umbra PG 18 5839 23323
Pioraco MC 19 1134 24457

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
56 Km NE of Terni (111501 inhabitants)
72 Km NW of Teramo (54892 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
93 Km S of Fano (60888 inhabitants)
96 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 0.4 2021-10-15
16:19:33
43.0082 12.962 11 2021-10-15
16:35:04
Sala Sismica INGV-Roma 96616511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-15 16:19:33 ± 0.39
Latitude 43.0082 ± 0.0099
Longitude 12.9620 ± 0.0123
Depth (km) 11 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96616511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1014
Semi-minor axis of confidence ellipse (meter) 627
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 16
Circular confidence region, given by single value of horizontal uncertainty (meter) 1010
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 140
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.03058
Epicentral distance of station farthest from the epicenter (degree) 0.19605
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 96616511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-15 16:35:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2021-10-15T16:19:41.47 0.1 undecidable manual S 65 0.1961 50 0.13 97
IV.MC2.EHZ. 2021-10-15T16:19:39.90 0.1 undecidable manual S 120 0.1925 50 -1.32 60
IV.MML1.EHZ. 2021-10-15T16:19:38.49 0.1 undecidable manual S 4 0.1052 133 -0.06 100
IV.FEMA.HNE. 2021-10-15T16:19:38.13 0.1 undecidable manual S 126 0.0791 141 0.29 93
IV.FDMO.HHZ. 2021-10-15T16:19:38.47 0.1 undecidable manual S 73 0.0962 135 0.19 95
IV.MC2.EHZ. 2021-10-15T16:19:38.44 0.1 undecidable manual P 120 0.1925 50 0.69 84
IV.CSP1.EHZ. 2021-10-15T16:19:37.68 0.1 undecidable manual P 65 0.1961 50 -0.14 95
IT.MTCL.HGE. 2021-10-15T16:19:37.01 0.1 undecidable manual S 117 0.0306 162 0.06 99
IV.FDMO.HHZ. 2021-10-15T16:19:36.05 0.1 undecidable manual P 73 0.0962 135 0 100
IV.MML1.EHZ. 2021-10-15T16:19:36.14 0.1 undecidable manual P 4 0.1052 133 -0.07 99
IV.FEMA.HNE. 2021-10-15T16:19:36.09 0.1 undecidable manual P 126 0.0791 141 0.29 94
IV.CESI.HHZ. 2021-10-15T16:19:36.88 0.1 undecidable manual S 266 0.0423 157 -0.22 98
IT.MTCL.HGE. 2021-10-15T16:19:35.42 0.1 undecidable manual P 117 0.0306 162 0.14 98
IV.CESI.HHZ. 2021-10-15T16:19:35.28 0.1 undecidable manual P 266 0.0423 157 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.5 4.6692225E-5 0.0768 AML other m 2021-10-15T16:19:37.31
IV.FDMO.HHE. ML:0.3 2.742184E-5 0.1024 AML other m 2021-10-15T16:19:38.64
IV.MML1.EHE. ML:0.4 3.2405035E-5 0.1664 AML other m 2021-10-15T16:19:38.97
IV.MML1.EHN. ML:0.5 3.705179E-5 1.8176 AML other m 2021-10-15T16:19:38.78
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