Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 22-11-2021 and time 00:09:55 (UTC) in region 6 km SW Monte Cavallo (MC)

A magnitude ML 1.3 earthquake occured in region: 6 km SW Monte Cavallo (MC), on

  • 22-11-2021 00:09:55 (UTC)
  • 22-11-2021 01:09:55 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9470, 12.9790 at 10 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 6 145 145
Sellano PG 8 1079 1224
Preci PG 9 724 1948
Visso MC 9 1107 3055
Pieve Torina MC 12 1458 4513
Ussita MC 13 444 4957
Fiordimonte MC 14 202 5159
Serravalle di Chienti MC 14 1070 6229
Cerreto di Spoleto PG 15 1075 7304
Castelsantangelo sul Nera MC 15 281 7585
Pievebovigliana MC 16 866 8451
Muccia MC 16 915 9366
Fiastra MC 18 559 9925
Acquacanina MC 19 121 10046
Norcia PG 20 4957 15003

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km E of Foligno (57155 inhabitants)
51 Km NE of Terni (111501 inhabitants)
51 Km E of Perugia (166134 inhabitants)
67 Km W of Teramo (54892 inhabitants)
75 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
93 Km NE of Viterbo (67173 inhabitants)
100 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 1.3 2021-11-22
00:09:55		 42.9473 12.9792 10 2021-11-22
00:16:39		 Sala Sismica INGV-Roma 97671891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-22 00:09:55 ± 0.05
Latitude 42.9473 ± 0.0027
Longitude 12.9792 ± 0.0061
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97671891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 498
Semi-minor axis of confidence ellipse (meter) 279
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 68
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
Number of associated phases, regardless of their use for origin computation 35
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39210
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 97671891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-22 00:16:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRSN.EHZ. 2021-11-22T00:10:23.61 3.0 negative manual P 1.85 0
IV.EL6.EHZ. 2021-11-22T00:10:10.35 0.6 undecidable manual S 13 43.5231 50 0.29 45
IV.NARO.HHZ. 2021-11-22T00:10:09.91 3.0 positive manual P -0.25 0
IV.LNSS.HHZ. 2021-11-22T00:10:08.80 0.6 undecidable manual S 173 38.5281 50 0.07 48
IV.ATCC.EHZ. 2021-11-22T00:10:08.81 0.3 undecidable manual S 314 38.1285 50 0.2 70
IV.TERO.HHZ. 2021-11-22T00:10:07.04 3.0 undecidable manual P -0.29 0
IV.FRON.EHZ. 2021-11-22T00:10:07.68 3.0 undecidable manual P -0.17 0
IV.GAVE.EHZ. 2021-11-22T00:10:06.18 0.6 undecidable manual S 194 29.1486 50 -0.04 49
IV.ARVD.HHZ. 2021-11-22T00:10:06.81 3.0 negative manual P -0.15 0
IV.SSFR.HHZ. 2021-11-22T00:10:06.14 3.0 positive manual P -0.05 0
IV.ASSB.HHZ. 2021-11-22T00:10:05.67 0.6 undecidable manual S 292 28.0497 50 -0.27 47
IV.MURB.HHZ. 2021-11-22T00:10:05.31 3.0 negative manual P 0.05 0
IV.CING.HHZ. 2021-11-22T00:10:05.15 3.0 positive manual P -0.08 0
IV.EL6.EHZ. 2021-11-22T00:10:04.01 0.3 positive manual P 13 43.5231 50 -0.04 71
IV.SMA1.EHZ. 2021-11-22T00:10:04.47 3.0 undecidable manual P -0.07 0
IV.MF5.EHZ. 2021-11-22T00:10:03.92 3.0 negative manual P 0.47 0
IV.ATCC.EHZ. 2021-11-22T00:10:03.26 0.3 positive manual P 314 38.1285 50 0.05 72
IV.MML1.EHZ. 2021-11-22T00:10:03.01 0.6 undecidable manual S 358 18.4704 119 -0.18 48
IV.FOSV.EHZ. 2021-11-22T00:10:03.72 0.1 undecidable manual P 335 42.4242 50 -0.16 93
IV.LNSS.HHZ. 2021-11-22T00:10:03.14 0.6 positive manual P 173 38.5281 50 -0.14 47
IV.NRCA.HHZ. 2021-11-22T00:10:02.45 0.3 undecidable manual S 139 16.7721 122 -0.23 72
IV.GUMA.HHZ. 2021-11-22T00:10:02.60 3.0 positive manual P 0.45 0
IV.SNTG.HHZ. 2021-11-22T00:10:02.51 0.6 positive manual P 355 34.2435 50 -0.12 48
IV.GAVE.EHZ. 2021-11-22T00:10:01.82 0.3 positive manual P 194 29.1486 50 -0.01 74
IV.ASSB.HHZ. 2021-11-22T00:10:01.56 0.1 positive manual P 292 28.0497 50 -0.11 96
IV.FDMO.HHZ. 2021-11-22T00:10:01.39 0.3 undecidable manual S 42 13.1757 128 -0.29 71
IV.MMO1.EHZ. 2021-11-22T00:10:01.68 3.0 positive manual P -0.05 0
IV.CESI.HHZ. 2021-11-22T00:10:00.67 0.6 undecidable manual S 317 8.7801 140 0.1 50
IV.MML1.EHZ. 2021-11-22T00:10:00.09 0.6 positive manual P 358 18.4704 119 0.01 50
IV.MC2.EHZ. 2021-11-22T00:10:00.37 0.1 undecidable manual P 103 17.4714 121 0.45 91
IV.FDMO.HHZ. 2021-11-22T00:09:59.21 1.0 undecidable manual P 42 13.1757 128 0 25
IT.MTCL.HGZ. 2021-11-22T00:09:59.63 0.6 undecidable manual S 18 5.3946 153 -0.28 48
IV.NRCA.HHZ. 2021-11-22T00:09:59.76 0.1 undecidable manual P 139 16.7721 122 -0.03 100
IT.MTCL.HGZ. 2021-11-22T00:09:58.35 0.1 positive manual P 18 5.3946 153 0.16 99
IV.CESI.HHZ. 2021-11-22T00:09:58.81 0.1 undecidable manual P 317 8.7801 140 0.24 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IT.MTCL.HGN. ML:3.6 0.07194999999999999 0.08 AML other m 2021-11-22T00:10:00.06
IT.MTCL.HGE. ML:3.6 0.05755 0.88 AML other m 2021-11-22T00:10:00.79
IV.CESI.HHE. ML:1.6 0.000519 0.1 AML other m 2021-11-22T00:10:00.84
IV.CESI.HNE. ML:1.6 0.0005285 0.1 AML other m 2021-11-22T00:10:00.84
IV.CESI.HNN. ML:1.6 0.000508 1.54 AML other m 2021-11-22T00:10:01.02
IV.CESI.HHN. ML:1.6 0.0005800000000000001 1.54 AML other m 2021-11-22T00:10:01.79
IV.FDMO.HHE. ML:1.4 0.00027850000000000005 0.18 AML other m 2021-11-22T00:10:01.71
IV.FDMO.HHN. ML:1.4 0.00027449999999999995 0.48 AML other m 2021-11-22T00:10:01.94
IV.NRCA.HHN. ML:1.8 0.00047850000000000003 0.16 AML other m 2021-11-22T00:10:02.68
IV.MML1.EHN. ML:1.4 0.000178 0.2 AML other m 2021-11-22T00:10:03.38
IV.NRCA.HHE. ML:1.5 0.0002515 0.1 AML other m 2021-11-22T00:10:03.43
IV.MML1.EHE. ML:1.5 0.0002315 0.18 AML other m 2021-11-22T00:10:03.41
IV.ASSB.HHN. ML:1.3 0.00009955 1.8 AML other m 2021-11-22T00:10:05.99
IV.ASSB.HHE. ML:1.1 0.00007035 1.72 AML other m 2021-11-22T00:10:06.06
IV.MMO1.EHE. ML:1.2 0.00007315 0.28 AML other m 2021-11-22T00:10:06.23
IV.GAVE.EHE. ML:1.2 0.00007055000000000001 0.8 AML other m 2021-11-22T00:10:06.59
IV.MMO1.EHN. ML:1.3 0.00010600000000000002 0.22 AML other m 2021-11-22T00:10:06.60
IV.GAVE.EHN. ML:1.0 0.0000569 1.2 AML other m 2021-11-22T00:10:06.70
IV.GUMA.HHN. ML:1.4 0.00010465 0.2 AML other m 2021-11-22T00:10:07.62
IV.GUMA.HHE. ML:1.5 0.00013450000000000002 0.26 AML other m 2021-11-22T00:10:07.62
IV.SNTG.HHN. ML:0.9 0.00002985 0.76 AML other m 2021-11-22T00:10:09.46
IV.LNSS.HHE. ML:1.0 0.000042 1.1 AML other m 2021-11-22T00:10:09.40
IV.LNSS.HHN. ML:0.9 0.0000315 0.76 AML other m 2021-11-22T00:10:10.64
IV.SNTG.HHE. ML:0.8 0.00002695 0.42 AML other m 2021-11-22T00:10:10.85
IV.CING.HHN. ML:0.9 0.000019950000000000004 0.14 AML other m 2021-11-22T00:10:12.96
IV.CING.HHE. ML:0.9 0.00002035 1.32 AML other m 2021-11-22T00:10:13.26
IV.MURB.HHE. ML:1.1 0.000035799999999999996 0.46 AML other m 2021-11-22T00:10:13.39
IV.SSFR.HHE. ML:1.0 0.00002385 0.66 AML other m 2021-11-22T00:10:16.59
IV.MURB.HHN. ML:1.1 0.0000344 1.3 AML other m 2021-11-22T00:10:17.27
IV.SSFR.HHN. ML:1.0 0.0000195 0.16 AML other m 2021-11-22T00:10:20.14
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