Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 15-11-2021 and time 23:34:09 (UTC) in region 5 km S Monte Cavallo (MC)

A magnitude ML 1.2 earthquake occured in region: 5 km S Monte Cavallo (MC), on

  • 15-11-2021 23:34:09 (UTC)
  • 16-11-2021 00:34:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9500, 13.0150 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.

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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 5 145 145
Visso MC 6 1107 1252
Preci PG 8 724 1976
Sellano PG 10 1079 3055
Ussita MC 10 444 3499
Pieve Torina MC 11 1458 4957
Fiordimonte MC 12 202 5159
Castelsantangelo sul Nera MC 13 281 5440
Pievebovigliana MC 14 866 6306
Serravalle di Chienti MC 15 1070 7376
Fiastra MC 15 559 7935
Muccia MC 15 915 8850
Acquacanina MC 16 121 8971
Cerreto di Spoleto PG 17 1075 10046
Bolognola MC 18 142 10188
Norcia PG 19 4957 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
53 Km NE of Terni (111501 inhabitants)
54 Km E of Perugia (166134 inhabitants)
65 Km NW of Teramo (54892 inhabitants)
74 Km NW of L'Aquila (69753 inhabitants)
85 Km SW of Ancona (100861 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
99 Km S of Fano (60888 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		ML 1.2 2021-11-15
23:34:09		 42.9503 13.0152 11 2021-11-15
23:40:36		 Sala Sismica INGV-Roma 97486461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-15 23:34:09 ± 0.04
Latitude 42.9503 ± 0.0027
Longitude 13.0152 ± 0.0025
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97486461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 296
Semi-minor axis of confidence ellipse (meter) 195
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 213
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 142
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.09713
Epicentral distance of station farthest from the epicenter (degree) 0.27609
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 97486461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-15 23:40:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ASSB.HHZ. 2021-11-15T23:34:19.85 0.6 undecidable manual S 290 30.6471 90 0 49
IV.MMO1.EHZ. 2021-11-15T23:34:18.59 0.6 undecidable manual S 102 25.9518 91 0.01 49
IV.CSP1.EHZ. 2021-11-15T23:34:17.54 0.6 undecidable manual S 44 21.9669 91 0.01 49
IV.MML1.EHZ. 2021-11-15T23:34:16.38 0.6 undecidable manual S 349 18.4704 91 -0.2 48
IV.NRCA.HHZ. 2021-11-15T23:34:15.61 0.6 undecidable manual S 148 15.2736 94 -0.12 49
IV.ASSB.HHZ. 2021-11-15T23:34:15.22 0.1 positive manual P 290 30.6471 90 -0.13 95
IV.FDMO.HHZ. 2021-11-15T23:34:14.56 0.6 undecidable manual S 31 11.1777 114 -0.12 50
IV.CSP1.EHZ. 2021-11-15T23:34:14.09 0.3 negative manual P 44 21.9669 91 0.09 73
IV.CESI.HHZ. 2021-11-15T23:34:14.60 0.6 undecidable manual S 304 10.7781 116 0.01 50
IV.MMO1.EHZ. 2021-11-15T23:34:14.63 0.3 positive manual P 102 25.9518 91 0.01 74
IV.GAVE.EHZ. 2021-11-15T23:34:13.49 3.0 undecidable manual P 30.2475 -1.8 0
IV.MML1.EHZ. 2021-11-15T23:34:13.46 0.6 undecidable manual P 349 18.4704 91 0 50
IV.NRCA.HHZ. 2021-11-15T23:34:13.01 0.1 positive manual P 148 15.2736 94 0.04 100
IV.FDMO.HHZ. 2021-11-15T23:34:12.41 1.0 undecidable manual P 31 11.1777 114 0.04 25
IV.CESI.HHZ. 2021-11-15T23:34:12.49 0.1 positive manual P 304 10.7781 116 0.18 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.0 0.00011499999999999999 0.18 AML other m 2021-11-15T23:34:14.73
IV.FDMO.HHE. ML:1.0 0.00011505 0.14 AML other m 2021-11-15T23:34:14.67
IV.CESI.HHN. ML:1.5 0.00033099999999999997 0.28 AML other m 2021-11-15T23:34:14.98
IV.CESI.HHE. ML:1.4 0.00027049999999999996 0.2 AML other m 2021-11-15T23:34:14.85
IV.NRCA.HHN. ML:1.1 0.00010669999999999999 0.12 AML other m 2021-11-15T23:34:15.90
IV.NRCA.HHE. ML:1.0 0.0000848 0.58 AML other m 2021-11-15T23:34:17.49
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