Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 01-12-2021 and time 20:42:06 (Italy) in region 6 km W Visso (MC)

A magnitude ML 1.9 earthquake occured in region: 6 km W Visso (MC), on

  • 01-12-2021 19:42:06 (UTC)
  • 01-12-2021 20:42:06 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9400, 13.0160 at 12 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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
Visso MC 6 1107 1107
Monte Cavallo MC 6 145 1252
Preci PG 7 724 1976
Sellano PG 9 1079 3055
Ussita MC 10 444 3499
Pieve Torina MC 12 1458 4957
Castelsantangelo sul Nera MC 12 281 5238
Fiordimonte MC 13 202 5440
Pievebovigliana MC 15 866 6306
Cerreto di Spoleto PG 16 1075 7381
Serravalle di Chienti MC 16 1070 8451
Fiastra MC 16 559 9010
Muccia MC 16 915 9925
Acquacanina MC 17 121 10046
Norcia PG 18 4957 15003
Bolognola MC 18 142 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
52 Km NE of Terni (111501 inhabitants)
54 Km E of Perugia (166134 inhabitants)
64 Km W of Teramo (54892 inhabitants)
73 Km NW of L'Aquila (69753 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 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
Bulletin
Rev1000 		ML 1.9 2021-12-01
19:42:06		 42.9398 13.0157 12 2022-03-30
13:04:35		 Bollettino Sismico Italiano INGV 100597441
Reviewed
Rev100 		ML 2.0 2021-12-01
19:42:06		 42.9383 13.0088 12 2021-12-01
19:47:24		 Sala Sismica INGV-Roma 98026851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-01 19:42:06 ± 0.04
Latitude 42.9398 ± 0.0018
Longitude 13.0157 ± 0.0025
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100597441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 228
Semi-minor axis of confidence ellipse (meter) 92
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 210
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 31
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.74194
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 32
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 44
Type of magnitude ML
Reference to an origin 100597441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-04 16:33:35

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 64
Type of magnitude ML
Reference to an origin 98026851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-01 19:47:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IMOL.HNZ. 2021-12-01T19:42:35.52 3.0 positive manual Pn 0.36 0
IV.ARVD.HHZ. 2021-12-01T19:42:27.01 3.0 undecidable manual S -0.05 0
IV.PIEI.HHZ. 2021-12-01T19:42:20.21 0.3 undecidable manual P 330 76.6677 91 0.27 63
IV.NARO.HHZ. 2021-12-01T19:42:20.72 0.1 undecidable manual P 335 82.3509 91 -0.09 87
IV.FIU1.HNZ. 2021-12-01T19:42:17.17 0.1 undecidable manual S 346 28.4493 94 0.41 89
IV.TERO.HHZ. 2021-12-01T19:42:17.26 0.1 undecidable manual P 126 59.3961 91 -0.02 91
IV.ASSB.HHZ. 2021-12-01T19:42:17.24 0.1 undecidable manual S 292 31.1466 93 -0.23 93
IV.SSFR.HHZ. 2021-12-01T19:42:17.06 0.1 undecidable manual P 341 58.1973 91 -0.03 92
IV.OFFI.HHZ. 2021-12-01T19:42:17.97 3.0 positive manual P 1.11 0
IV.MURB.HHZ. 2021-12-01T19:42:16.09 0.1 undecidable manual P 312 53.502 91 -0.28 88
IV.GAVE.EHZ. 2021-12-01T19:42:16.94 0.1 undecidable manual S 200 29.1486 94 -0.02 97
IV.MNTT.EHZ. 2021-12-01T19:42:16.02 3.0 negative manual P 0.05 0
IT.FOPC.HGZ. 2021-12-01T19:42:16.40 0.1 undecidable manual S 278 25.5522 95 0.4 89
IV.MMO1.EHZ. 2021-12-01T19:42:16.03 0.1 undecidable manual S 100 25.6521 95 0.01 97
IV.CESX.HHZ. 2021-12-01T19:42:15.68 0.6 positive manual P 224 50.7159 92 -0.26 44
IV.ARRO.EHZ. 2021-12-01T19:42:15.07 0.6 undecidable manual P 207 44.9217 92 0.03 47
IV.PF6.EHZ. 2021-12-01T19:42:15.96 0.1 undecidable manual S 33 26.3514 94 -0.23 93
IV.SEF1.HNZ. 2021-12-01T19:42:15.36 0.3 undecidable manual S 347 23.6541 96 -0.12 72
IV.CSP1.EHZ. 2021-12-01T19:42:15.25 0.1 undecidable manual S 42 22.755 96 -0.01 98
IV.CING.HHZ. 2021-12-01T19:42:15.95 0.1 positive manual P 17 50.5161 92 0.05 93
IV.ARVD.HHZ. 2021-12-01T19:42:15.66 3.0 negative manual P -2.36 0
IV.FOSV.EHZ. 2021-12-01T19:42:14.88 0.3 positive manual P 332 44.4222 92 -0.09 70
IV.ATCC.EHZ. 2021-12-01T19:42:14.44 1.0 negative manual P 312 40.8258 92 0.02 24
IV.SMA1.EHZ. 2021-12-01T19:42:14.83 0.6 negative manual P 143 43.0236 92 0.07 47
IV.MF5.EHZ. 2021-12-01T19:42:14.21 0.6 negative manual P 81 36.4413 93 0.47 44
IV.EL6.EHZ. 2021-12-01T19:42:14.90 0.1 positive manual P 9 43.7229 92 0.03 94
IV.MOMA.HHZ. 2021-12-01T19:42:14.47 0.1 undecidable manual P 248 39.2274 92 0.3 90
IV.LNSS.HHZ. 2021-12-01T19:42:13.71 0.1 positive manual P 177 37.4292 92 -0.18 92
IV.MC2.EHZ. 2021-12-01T19:42:13.34 0.1 undecidable manual S 103 14.4744 110 0.27 95
IV.SNTG.HHZ. 2021-12-01T19:42:13.48 0.1 negative manual P 350 35.5422 93 -0.12 94
IV.MTRA.EHZ. 2021-12-01T19:42:13.77 0.3 undecidable manual P 123 37.0296 92 -0.06 71
IV.GUMA.HHZ. 2021-12-01T19:42:12.97 0.1 positive manual P 62 29.2485 94 0.33 91
IT.FOPC.HGZ. 2021-12-01T19:42:12.28 0.1 undecidable manual P 278 25.5522 95 0.21 93
IV.NRCA.HNZ. 2021-12-01T19:42:12.75 0.1 undecidable manual S 146 14.2746 111 -0.28 94
IV.MMO1.EHZ. 2021-12-01T19:42:12.06 0.1 negative manual P 100 25.6521 95 -0.02 97
IV.FIU1.HNZ. 2021-12-01T19:42:12.23 0.1 undecidable manual P 346 28.4493 94 -0.28 92
IV.GAVE.EHZ. 2021-12-01T19:42:12.54 0.1 positive manual P 200 29.1486 94 -0.09 96
IV.CESI.HHZ. 2021-12-01T19:42:12.34 0.1 undecidable manual S 309 11.5773 121 -0.04 100
IV.ASSB.HHZ. 2021-12-01T19:42:12.63 0.6 negative manual P 292 31.1466 93 -0.29 46
IV.FDMO.HHZ. 2021-12-01T19:42:12.43 0.1 undecidable manual S 28 12.1767 118 -0.1 98
IV.CSP1.EHZ. 2021-12-01T19:42:11.70 0.1 positive manual P 42 22.755 96 0.06 98
IV.FEMA.HNZ. 2021-12-01T19:42:11.10 0.1 undecidable manual S 48 3.6963 158 0.09 99
IT.MTCL.HGZ. 2021-12-01T19:42:11.09 0.1 undecidable manual S 348 6.1938 145 -0.23 98
IV.PF6.EHZ. 2021-12-01T19:42:11.89 0.1 undecidable manual P 33 26.3514 94 -0.29 92
IV.SEF1.HNZ. 2021-12-01T19:42:11.64 0.1 undecidable manual P 347 23.6541 96 -0.13 96
IV.FDMO.HHZ. 2021-12-01T19:42:10.10 0.6 undecidable manual P 28 12.1767 118 0.03 50
IV.NRCA.HNZ. 2021-12-01T19:42:10.34 0.3 positive manual P 146 14.2746 111 -0.01 74
IV.MC2.EHZ. 2021-12-01T19:42:10.52 0.1 negative manual P 103 14.4744 110 0.14 97
IV.CESI.HHZ. 2021-12-01T19:42:09.98 1.0 undecidable manual P 309 11.5773 121 0 25
IV.FEMA.HNZ. 2021-12-01T19:42:09.42 0.1 undecidable manual P 48 3.6963 158 0.23 97
IT.MTCL.HGZ. 2021-12-01T19:42:09.45 0.1 positive manual P 348 6.1938 145 0.09 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HNE. ML:2.0 0.0010215 0.36 AML other m 2021-12-01T19:42:12.44
IV.CESI.HHE. ML:2.0 0.0011065 0.36 AML other m 2021-12-01T19:42:12.62
IV.CESI.HNN. ML:2.2 0.00155 1.34 AML other m 2021-12-01T19:42:12.67
IV.CESI.HHN. ML:2.2 0.0016749999999999998 0.12 AML other m 2021-12-01T19:42:12.67
IV.MC2.EHE. ML:2.0 0.001 1.38 AML other m 2021-12-01T19:42:14.23
IV.MC2.EHN. ML:2.2 0.0013005 0.64 AML other m 2021-12-01T19:42:14.92
IV.MMO1.EHE. ML:1.9 0.0004290000000000001 1.14 AML other m 2021-12-01T19:42:16.35
IV.MMO1.EHN. ML:1.8 0.00039249999999999995 1.26 AML other m 2021-12-01T19:42:17.74
IV.GAVE.EHN. ML:2.1 0.000607 1 AML other m 2021-12-01T19:42:17.91
IV.ASSB.HHN. ML:1.7 0.00022149999999999996 0.16 AML other m 2021-12-01T19:42:17.72
IV.GAVE.EHE. ML:2.2 0.0007130000000000001 0.52 AML other m 2021-12-01T19:42:17.38
IV.ASSB.HHE. ML:1.8 0.00027150000000000004 0.54 AML other m 2021-12-01T19:42:17.74
IV.SNTG.HHE. ML:1.7 0.0002165 0.86 AML other m 2021-12-01T19:42:19.54
IV.SNTG.HHN. ML:1.7 0.000215 0.1 AML other m 2021-12-01T19:42:19.07
IV.LNSS.HHN. ML:2.2 0.0005780000000000001 0.2 AML other m 2021-12-01T19:42:19.70
IV.LNSS.HNN. ML:2.2 0.0005629999999999999 0.2 AML other m 2021-12-01T19:42:19.71
IV.LNSS.HHE. ML:2.1 0.00047850000000000003 1.62 AML other m 2021-12-01T19:42:19.07
IV.LNSS.HNE. ML:2.1 0.0004295 1.6 AML other m 2021-12-01T19:42:19.88
IV.MF5.EHN. ML:1.9 0.0002835 0.38 AML other m 2021-12-01T19:42:20.53
IV.MTRA.EHE. ML:1.8 0.000212 0.52 AML other m 2021-12-01T19:42:20.19
IV.MOMA.HHN. ML:1.9 0.00027550000000000003 0.2 AML other m 2021-12-01T19:42:20.80
IV.MF5.EHE. ML:1.9 0.0003025 0.44 AML other m 2021-12-01T19:42:20.55
IV.MTRA.EHN. ML:1.8 0.0002565 0.18 AML other m 2021-12-01T19:42:20.95
IV.ATCC.HNN. ML:1.8 0.00018805 0.44 AML other m 2021-12-01T19:42:21.52
IV.MOMA.HHE. ML:2.0 0.000379 0.16 AML other m 2021-12-01T19:42:21.34
IV.ATCC.EHN. ML:1.7 0.00015899999999999996 0.6 AML other m 2021-12-01T19:42:21.53
IV.ATCC.EHE. ML:1.7 0.00017549999999999998 1.38 AML other m 2021-12-01T19:42:21.84
IV.ARRO.EHE. ML:1.7 0.000154 1.1 AML other m 2021-12-01T19:42:22.00
IV.EL6.EHN. ML:1.9 0.00025550000000000003 0.24 AML other m 2021-12-01T19:42:22.10
IV.EL6.EHE. ML:2.0 0.00028100000000000005 0.16 AML other m 2021-12-01T19:42:22.21
IV.ATCC.HNE. ML:1.8 0.00021 1.1 AML other m 2021-12-01T19:42:22.77
IV.ARRO.EHN. ML:1.6 0.00010545 0.68 AML other m 2021-12-01T19:42:22.33
IV.CESX.HHN. ML:1.8 0.00015900000000000002 0.44 AML other m 2021-12-01T19:42:23.75
IV.CESX.HHE. ML:1.8 0.00014250000000000002 0.32 AML other m 2021-12-01T19:42:23.69
IV.SMA1.EHE. ML:1.8 0.0001865 0.36 AML other m 2021-12-01T19:42:23.76
IV.SMA1.EHN. ML:1.8 0.00017299999999999998 0.44 AML other m 2021-12-01T19:42:24.96
IV.MURB.HHN. ML:2.1 0.0002875 0.18 AML other m 2021-12-01T19:42:25.42
IV.MNTT.EHN. ML:2.2 0.0003755 0.7 AML other m 2021-12-01T19:42:25.87
IV.MNTT.EHE. ML:2.2 0.00041349999999999997 0.78 AML other m 2021-12-01T19:42:26.47
IV.MURB.HHE. ML:2.1 0.000317 0.26 AML other m 2021-12-01T19:42:26.64
IV.SSFR.HHN. ML:0.0 0.0002125 0.8 AML other m 2021-12-01T19:42:27.99
IV.SSFR.HHE. ML:0.0 0.00014500000000000003 0.14 AML other m 2021-12-01T19:42:28.67
IV.TERO.HNE. ML:1.9 0.0001643368 2.9696 AML other m 2021-12-01T19:42:26.35
IV.TERO.HHN. ML:1.6 0.00007507913499999999 0.1792 AML other m 2021-12-01T19:42:28.15
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
Waveforms Seismic signals in miniseed + resp format Download