Earthquake with magnitude of ML 0.7 on date 21-09-2021 and time 08:10:11 (Italy) in region 3 km NW Monte Cavallo (MC)

A magnitude ML 0.7 earthquake occured in region: 3 km NW Monte Cavallo (MC), on

  • 21-09-2021 06:10:11 (UTC)
  • 21-09-2021 08:10:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.01, 12.976 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 3 145 145
Pieve Torina MC 7 1458 1603
Serravalle di Chienti MC 7 1070 2673
Fiordimonte MC 10 202 2875
Muccia MC 10 915 3790
Pievebovigliana MC 11 866 4656
Visso MC 13 1107 5763
Sellano PG 14 1079 6842
Fiastra MC 15 559 7401
Ussita MC 15 444 7845
Sefro MC 15 422 8267
Preci PG 15 724 8991
Camerino MC 16 6974 15965
Acquacanina MC 16 121 16086
Nocera Umbra PG 19 5839 21925
Valtopina PG 19 1398 23323
Pioraco MC 19 1134 24457
Castelsantangelo sul Nera MC 19 281 24738

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km E of Foligno (57155 inhabitants)
49 Km E of Perugia (166134 inhabitants)
57 Km NE of Terni (111501 inhabitants)
71 Km NW of Teramo (54892 inhabitants)
81 Km SW of Ancona (100861 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
93 Km S of Fano (60888 inhabitants)
97 Km NE of Viterbo (67173 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 0.7 2021-09-21
06:10:11
43.0097 12.976 12 2021-09-21
06:47:44
Sala Sismica INGV-Roma 95686821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-21 06:10:11 ± 0.06
Latitude 43.0097 ± 0.0036
Longitude 12.9760 ± 0.0037
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 95686821

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 361
Semi-minor axis of confidence ellipse (meter) 160
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 201
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) 115
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) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.02338
Epicentral distance of station farthest from the epicenter (degree) 0.23382
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:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 95686821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-21 06:47:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2021-09-21T06:10:20.91 0.1 undecidable manual S 278 0.2338 93 -0.14 95
IV.MC2.EHN. 2021-09-21T06:10:19.64 0.1 undecidable manual S 122 0.1844 96 0.07 96
IV.CSP1.EHZ. 2021-09-21T06:10:19.62 0.1 undecidable manual S 64 0.1862 96 -0.01 96
IV.NRCA.HHE. 2021-09-21T06:10:19.80 0.1 undecidable manual S 150 0.2032 94 -0.33 91
IV.MML1.EHZ. 2021-09-21T06:10:17.26 0.1 undecidable manual S 358 0.1043 118 -0.02 98
IV.CESI.HHZ. 2021-09-21T06:10:16.29 0.1 undecidable manual S 265 0.0522 146 0.14 97
IV.CSP1.EHZ. 2021-09-21T06:10:16.20 0.3 negative manual P 64 0.1862 96 -0.06 72
IV.NRCA.HHE. 2021-09-21T06:10:16.37 0.6 undecidable manual P 150 0.2032 94 -0.18 47
IV.FDMO.HHZ. 2021-09-21T06:10:16.78 0.1 undecidable manual S 72 0.0854 127 -0.05 97
IV.ASSB.HHZ. 2021-09-21T06:10:16.91 1.0 negative manual P 278 0.2338 93 -0.17 24
IV.MC2.EHN. 2021-09-21T06:10:16.60 0.3 undecidable manual P 122 0.1844 96 0.38 67
IV.FEMA.HNE. 2021-09-21T06:10:16.62 0.1 undecidable manual S 131 0.0719 135 0.1 98
IT.MTCL.HGE. 2021-09-21T06:10:15.63 0.1 undecidable manual S 132 0.0234 164 -0.15 96
IV.MML1.EHZ. 2021-09-21T06:10:15.03 1.0 undecidable manual P 358 0.1043 118 0.13 24
IV.CESI.HHZ. 2021-09-21T06:10:14.40 0.1 undecidable manual P 265 0.0522 146 0.15 96
IV.FDMO.HHZ. 2021-09-21T06:10:14.60 1.0 undecidable manual P 72 0.0854 127 -0.04 24
IT.MTCL.HGE. 2021-09-21T06:10:14.04 0.1 undecidable manual P 132 0.0234 164 0 100
IV.FEMA.HNE. 2021-09-21T06:10:14.66 0.3 undecidable manual P 131 0.0719 135 0.2 72
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:1 0.00013 0.1 AML other m 2021-09-21T06:10:16.34
IV.CESI.HHN. ML:1 0.000144806235 0.16 AML other m 2021-09-21T06:10:16.47
IV.CESI.HNE. ML:0.9 0.00012034752 0.0992 AML other m 2021-09-21T06:10:16.34
IV.FDMO.HHE. ML:0.2 2.1543665E-5 0.16 AML other m 2021-09-21T06:10:17.30
IV.FDMO.HHN. ML:0.4 3.058352E-5 0.08 AML other m 2021-09-21T06:10:16.98
IV.MML1.EHE. ML:0.6 4.490387E-5 0.0992 AML other m 2021-09-21T06:10:17.90
IV.MML1.EHN. ML:0.7 5.4623785E-5 0.08 AML other m 2021-09-21T06:10:17.86
IV.MML1.HNN. ML:0.9 8.2903505E-5 0.4512 AML other m 2021-09-21T06:10:19.79
IV.CSP1.EHN. ML:0.9 5.37336975E-5 0.08 AML other m 2021-09-21T06:10:20.21
IV.ASSB.HHE. ML:0.7 2.305453E-5 0.2624 AML other m 2021-09-21T06:10:23.02
IV.ASSB.HHN. ML:0.6 2.180707E-5 0.08 AML other m 2021-09-21T06:10:21.31
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