Earthquake with magnitude of ML 0.8 on date 16-10-2021 and time 12:48:41 (Italy) in region 4 km W Monte Cavallo (MC)

A magnitude ML 0.8 earthquake occured in region: 4 km W Monte Cavallo (MC), on

  • 16-10-2021 10:48:41 (UTC)
  • 16-10-2021 12:48:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.99, 12.958 at 12 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 9 1070 1215
Pieve Torina MC 10 1458 2673
Sellano PG 11 1079 3752
Fiordimonte MC 12 202 3954
Muccia MC 13 915 4869
Visso MC 13 1107 5976
Pievebovigliana MC 13 866 6842
Preci PG 14 724 7566
Ussita MC 16 444 8010
Fiastra MC 17 559 8569
Sefro MC 18 422 8991
Valtopina PG 18 1398 10389
Acquacanina MC 18 121 10510
Camerino MC 19 6974 17484
Castelsantangelo sul Nera MC 19 281 17765
Nocera Umbra PG 19 5839 23604
Cerreto di Spoleto PG 19 1075 24679

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km E of Foligno (57155 inhabitants)
48 Km E of Perugia (166134 inhabitants)
54 Km NE of Terni (111501 inhabitants)
71 Km NW of Teramo (54892 inhabitants)
80 Km NW of L'Aquila (69753 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
95 Km S of Fano (60888 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 2021-10-16
10:48:41
42.9903 12.958 12 2021-10-16
10:56:40
Sala Sismica INGV-Roma 96645201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-10-16 10:48:41 ± 0.07
Latitude 42.9903 ± 0.0018
Longitude 12.9580 ± 0.0037
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 96645201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 256
Semi-minor axis of confidence ellipse (meter) 211
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 107
Circular confidence region, given by single value of horizontal uncertainty (meter) 260
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.08
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.20684
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 96645201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-10-16 10:56:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HAGA.HHZ. 2021-10-16T10:50:17.21 3.0 undecidable manual Pg 7.52 0
IV.MRGE.HHZ. 2021-10-16T10:50:17.34 3.0 undecidable manual Pg 15.88 0
IV.ZEN8.EHZ. 2021-10-16T10:50:16.23 3.0 undecidable manual Sn 0.79 0
AC.VLO.HHZ. 2021-10-16T10:50:15.95 3.0 positive manual Pg 11.53 0
IV.EUCT.HNZ. 2021-10-16T10:49:45.94 3.0 undecidable manual Pg 5.36 0
IV.SGAL.EHZ. 2021-10-16T10:49:43.49 3.0 positive manual Pg 7.28 0
IV.MOCL.EHZ. 2021-10-16T10:49:39.90 3.0 undecidable manual Sg 0.33 0
OT.OT17.EHZ. 2021-10-16T10:49:39.26 3.0 undecidable manual Sn -7.99 0
IV.VAGA.HHZ. 2021-10-16T10:49:27.03 3.0 undecidable manual S -9.99 0
IV.RIBO.EHZ.01 2021-10-16T10:49:26.83 3.0 undecidable manual S -4.97 0
IV.RMP.HHZ. 2021-10-16T10:48:54.68 3.0 positive manual P -9.75 0
IV.CSP1.EHZ. 2021-10-16T10:48:50.04 0.6 undecidable manual S 61 0.2068 93 0.04 49
IV.NRCA.HNZ. 2021-10-16T10:48:49.56 0.6 undecidable manual S 144 0.1943 93 -0.07 48
IV.MML1.EHZ. 2021-10-16T10:48:47.36 0.6 undecidable manual S 5 0.1232 106 -0.19 49
IV.CSP1.EHZ. 2021-10-16T10:48:46.44 1.0 undecidable manual P 61 0.2068 93 0.07 24
IV.FDMO.HHZ. 2021-10-16T10:48:46.98 0.6 undecidable manual S 64 0.1052 115 -0.06 50
IV.NRCA.HNZ. 2021-10-16T10:48:46.13 0.1 undecidable manual P 144 0.1943 93 -0.03 98
IV.CESI.HHZ. 2021-10-16T10:48:45.61 0.6 undecidable manual S 290 0.0414 152 -0.08 50
IT.MTCL.HGZ. 2021-10-16T10:48:45.52 0.6 undecidable manual S 83 0.0306 159 -0.03 51
IV.MML1.EHZ. 2021-10-16T10:48:44.98 1.0 undecidable manual P 5 0.1232 106 0.02 25
IV.FDMO.HHZ. 2021-10-16T10:48:44.68 0.1 negative manual P 64 0.1052 115 0.01 100
IV.CESI.HHZ. 2021-10-16T10:48:43.86 0.6 undecidable manual P 290 0.0414 152 -0.02 51
IT.MTCL.HGZ. 2021-10-16T10:48:43.95 0.1 undecidable manual P 83 0.0306 159 0.15 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:0.7 6.770474E-5 0.0832 AML other m 2021-10-16T10:48:46.03
IV.CESI.HHE. ML:0.6 5.983678E-5 0.0832 AML other m 2021-10-16T10:48:45.79
IV.FDMO.HHE. ML:0.8 5.935E-5 0.18 AML other m 2021-10-16T10:48:47.09
IV.FDMO.HHN. ML:0.5 3.60499275E-5 0.096 AML other m 2021-10-16T10:48:47.28
IV.CESI.HNE. ML:1 0.000131632425 0.9408 AML other m 2021-10-16T10:48:42.98
IV.CESI.HNN. ML:1.1 0.0001743225 0.6016 AML other m 2021-10-16T10:48:47.82
IV.MML1.EHE. ML:1 9.6050795E-5 0.1408 AML other m 2021-10-16T10:48:47.53
IV.MML1.EHN. ML:0.7 4.9253255E-5 0.1408 AML other m 2021-10-16T10:48:47.71
IV.MML1.HNE. ML:1.1 0.000113545 0.1408 AML other m 2021-10-16T10:48:47.60
IV.MML1.HNN. ML:0.9 7.219887E-5 0.5312 AML other m 2021-10-16T10:48:45.67
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