Earthquake with magnitude of ML 1.8 on date 11-02-2021 and time 19:56:06 (Italy) in region 8 km W Monte Cavallo (MC)

A magnitude ML 1.8 earthquake occured in region: 8 km W Monte Cavallo (MC), on

  • 11-02-2021 18:56:06 (UTC)
  • 11-02-2021 19:56:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.99, 12.9 at 65 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 8 145 145
Serravalle di Chienti MC 10 1070 1215
Sellano PG 11 1079 2294
Pieve Torina MC 14 1458 3752
Valtopina PG 15 1398 5150
Muccia MC 16 915 6065
Fiordimonte MC 16 202 6267
Visso MC 16 1107 7374
Preci PG 16 724 8098
Nocera Umbra PG 17 5839 13937
Foligno PG 17 57155 71092
Pievebovigliana MC 17 866 71958
Trevi PG 18 8469 80427
Sefro MC 18 422 80849
Cerreto di Spoleto PG 19 1075 81924
Spello PG 19 8645 90569
Ussita MC 20 444 91013

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km E of Foligno (57155 inhabitants)
44 Km E of Perugia (166134 inhabitants)
52 Km NE of Terni (111501 inhabitants)
75 Km W of Teramo (54892 inhabitants)
81 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
91 Km NE of Viterbo (67173 inhabitants)
96 Km S of Fano (60888 inhabitants)
98 Km SE of Arezzo (99543 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 1.8 2021-02-11
18:56:06
42.99 12.9 65 2021-02-11
19:36:44
Sala Sismica INGV-Roma 87055571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-11 18:56:06 ± 0.18
Latitude 42.99 ± 0.01
Longitude 12.90 ± 0.01
Depth (km) 65 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 87055571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 875
Semi-minor axis of confidence ellipse (meter) 693
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 45
Circular confidence region, given by single value of horizontal uncertainty (meter) 870
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 106
Number of associated phases, regardless of their use for origin computation 34
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.47664
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 87055571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-11 19:36:44
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ECTS.HHZ. 2021-02-11T18:57:31.02 3.0 positive manual Pg 11.6 0
IV.IFOR.HHZ. 2021-02-11T18:57:26.58 3.0 undecidable manual Sn -6.27 0
AC.VLO.HHZ. 2021-02-11T18:57:16.70 3.0 negative manual Pg 19.17 0
OT.OT14.EHZ. 2021-02-11T18:57:06.76 3.0 undecidable manual Sg 4.46 0
AC.KBN.HHZ. 2021-02-11T18:57:02.11 3.0 positive manual Pn -1.92 0
IV.MURB.HHZ. 2021-02-11T18:56:48.86 3.0 undecidable manual S 315 0.3903 140 2.235 0
IV.CPOZ.HHZ. 2021-02-11T18:56:43.97 3.0 positive manual Pg 3.85 0
IV.EUCT.HNZ. 2021-02-11T18:56:40.52 3.0 undecidable manual Pn 0.72 0
IV.RMP.HHZ. 2021-02-11T18:56:35.22 3.0 positive manual Pn 3.23 0
OX.FUSE.HHZ. 2021-02-11T18:56:32.91 3.0 undecidable manual Sn -0.84 0
IV.SMA1.EHZ. 2021-02-11T18:56:28.03 0.3 undecidable manual S 138 0.4766 134 0.12 70
IV.EL6.EHZ. 2021-02-11T18:56:26.24 0.3 undecidable manual S 23 0.3714 142 0.02 71
IV.MC2.EHZ. 2021-02-11T18:56:25.08 0.3 undecidable manual S 110 0.2221 156 0.71 62
IV.MMO1.EHZ. 2021-02-11T18:56:25.44 0.1 undecidable manual S 106 0.322 146 -0.09 95
IV.CSP1.EHZ. 2021-02-11T18:56:24.35 0.3 undecidable manual S 64 0.2437 154 -0.24 71
IV.GAVE.EHZ. 2021-02-11T18:56:24.99 0.3 undecidable manual S 181 0.295 149 -0.19 70
IV.FDMO.HHZ. 2021-02-11T18:56:23.96 0.1 undecidable manual S 70 0.143 164 0.25 96
IV.CESI.HHZ. 2021-02-11T18:56:23.15 0.3 undecidable manual S 1 0.018 178 -0.1 76
IV.NRCA.HHZ. 2021-02-11T18:56:23.98 0.3 undecidable manual S 135 0.2176 156 -0.35 69
IV.ASSB.HHZ. 2021-02-11T18:56:23.98 0.1 undecidable manual S 287 0.188 159 -0.08 100
IV.FIR.HHZ. 2021-02-11T18:56:20.75 3.0 undecidable manual Pn -2.73 0
IV.SMA1.EHZ. 2021-02-11T18:56:19.05 0.1 undecidable manual P 138 0.4766 134 0.24 91
IV.MURB.HHZ. 2021-02-11T18:56:19.00 1.0 undecidable manual P 315 0.3903 140 1 17
IV.MF5.EHZ. 2021-02-11T18:56:17.96 0.3 undecidable manual P 90 0.4065 139 -0.18 69
IV.EL6.EHZ. 2021-02-11T18:56:17.80 0.1 undecidable manual P 23 0.3714 142 -0.03 96
IV.MMO1.EHZ. 2021-02-11T18:56:17.19 0.1 undecidable manual P 106 0.322 146 -0.24 93
IV.GAVE.EHZ. 2021-02-11T18:56:17.26 0.1 undecidable manual P 181 0.295 149 0.03 98
IV.ASSB.HHZ. 2021-02-11T18:56:16.67 0.1 undecidable manual P 287 0.188 159 0.09 98
IV.CESI.HHZ. 2021-02-11T18:56:16.10 0.3 undecidable manual P 1 0.018 178 -0.01 77
IV.FDMO.HHZ. 2021-02-11T18:56:16.32 0.1 undecidable manual P 70 0.143 164 -0.06 100
IV.MC2.EHZ. 2021-02-11T18:56:16.84 0.1 undecidable manual P 110 0.2221 156 0.09 98
IV.CSP1.EHZ. 2021-02-11T18:56:16.73 0.1 undecidable manual P 64 0.2437 154 -0.16 96
IV.NRCA.HHZ. 2021-02-11T18:56:16.71 0.1 undecidable manual P 135 0.2176 156 -0.02 99
OX.FUSE.HHZ. 2021-02-11T18:56:06.92 3.0 undecidable manual Pn -2.01 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHN. ML:1.7 9.3515375E-5 0.2304 AML other m 2021-02-11T18:56:24.49
IV.FDMO.HHE. ML:1.4 4.022799E-5 0.1536 AML other m 2021-02-11T18:56:24.48
IV.CESI.HHN. ML:1.4 4.4054435E-5 0.2176 AML other m 2021-02-11T18:56:24.46
IV.NRCA.HHN. ML:2.1 0.0001995 0.44 AML other m 2021-02-11T18:56:24.71
IV.FDMO.HHN. ML:1.7 9.2113405E-5 0.2432 AML other m 2021-02-11T18:56:24.44
IV.NRCA.HNE. ML:2 0.0001650585 0.1408 AML other m 2021-02-11T18:56:24.93
IV.NRCA.HHE. ML:2 0.000178 1.04 AML other m 2021-02-11T18:56:25.83
IV.SNTG.HHE. ML:1.7 8.3E-5 0.44 AML other m 2021-02-11T18:56:25.47
IV.ASSB.HHE. ML:1.5 6.0871285E-5 2.2016 AML other m 2021-02-11T18:56:24.37
IV.GAVE.EHN. ML:1.8 0.00010795 0.36 AML other m 2021-02-11T18:56:25.68
IV.GAVE.EHE. ML:1.7 8.535E-5 0.56 AML other m 2021-02-11T18:56:25.82
IV.SNTG.HHN. ML:1.7 9.135E-5 1.22 AML other m 2021-02-11T18:56:26.97
IV.EL6.EHE. ML:1.9 0.0001096032 1.8176 AML other m 2021-02-11T18:56:26.82
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download