Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 30-11-2020 and time 01:34:34 (UTC) in region 2 km W Visso (MC)

A magnitude ML 1.1 earthquake occured in region: 2 km W Visso (MC), on

  • 30-11-2020 01:34:34 (UTC)
  • 30-11-2020 02:34:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9390, 13.0710 at 11 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 2 1107 1107
Ussita MC 6 444 1551
Preci PG 7 724 2275
Castelsantangelo sul Nera MC 8 281 2556
Monte Cavallo MC 8 145 2701
Fiordimonte MC 11 202 2903
Pieve Torina MC 12 1458 4361
Sellano PG 13 1079 5440
Fiastra MC 13 559 5999
Acquacanina MC 13 121 6120
Pievebovigliana MC 14 866 6986
Bolognola MC 14 142 7128
Muccia MC 16 915 8043
Norcia PG 16 4957 13000
Serravalle di Chienti MC 18 1070 14070
Cerreto di Spoleto PG 18 1075 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
54 Km NE of Terni (111501 inhabitants)
59 Km E of Perugia (166134 inhabitants)
60 Km NW of Teramo (54892 inhabitants)
71 Km NW of L'Aquila (69753 inhabitants)
84 Km SW of Ancona (100861 inhabitants)
98 Km NE of Viterbo (67173 inhabitants)
100 Km W of Montesilvano (53738 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 1.1 2020-11-30
01:34:34		 42.9388 13.0707 11 2021-02-26
14:56:09		 Bollettino Sismico Italiano INGV 85152381
Reviewed
Rev100 		ML 1.3 2020-11-30
01:34:34		 42.9378 13.0723 10 2020-11-30
01:39:10		 Sala Sismica INGV-Roma 85098361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-30 01:34:34 ± 0.03
Latitude 42.9388 ± 0.0018
Longitude 13.0707 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85152381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 252
Semi-minor axis of confidence ellipse (meter) 203
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 39
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
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) 0.02788
Epicentral distance of station farthest from the epicenter (degree) 0.50272
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 85152381
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-02 12:04:14

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 85098361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-30 01:39:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARRO.EHZ. 2020-11-30T01:34:49.42 0.6 undecidable manual S 212 47.0196 50 -0.22 46
IV.SNTG.HHE. 2020-11-30T01:34:47.14 0.6 undecidable manual S 343 36.6411 50 0.27 46
IV.SMA1.EHN. 2020-11-30T01:34:47.97 0.6 undecidable manual S 148 40.4262 50 0.08 48
IV.T1299.HNN. 2020-11-30T01:34:47.64 0.6 undecidable manual S 153 37.9287 50 0.42 45
IV.LNSS.HNZ. 2020-11-30T01:34:47.04 0.6 undecidable manual S 184 37.3293 50 -0.03 49
IV.ASSB.HHN. 2020-11-30T01:34:46.23 0.6 undecidable manual S 289 35.3424 50 -0.3 46
IV.MTRA.EHE. 2020-11-30T01:34:45.85 0.3 undecidable manual S 127 33.3444 50 -0.14 72
IV.CESX.HHE. 2020-11-30T01:34:44.64 0.6 undecidable manual P 227 53.8017 50 0.29 45
IV.TERO.HHZ. 2020-11-30T01:34:44.74 0.3 undecidable manual P 129 55.7997 50 0.09 70
IV.PF6.EHZ. 2020-11-30T01:34:43.40 0.3 undecidable manual S 24 24.2535 50 -0.17 72
IV.ARRO.EHZ. 2020-11-30T01:34:43.70 0.1 undecidable manual P 212 47.0196 50 0.41 88
IV.GUMA.HHZ. 2020-11-30T01:34:43.93 0.3 undecidable manual S 57 25.4523 50 0.03 74
IV.EL6.EHZ. 2020-11-30T01:34:42.74 0.3 undecidable manual P 3 43.4232 50 0 72
IV.MOMA.HNZ. 2020-11-30T01:34:42.74 0.1 undecidable manual P 250 43.3233 50 0 96
IV.CSP1.EHZ. 2020-11-30T01:34:42.50 0.3 undecidable manual S 33 20.1687 50 0.02 75
IV.SMA1.EHN. 2020-11-30T01:34:42.28 0.6 undecidable manual P 148 40.4262 50 0 48
IV.MMO1.EHZ. 2020-11-30T01:34:42.52 0.3 undecidable manual S 102 21.2676 50 -0.26 71
IV.ASSB.HHN. 2020-11-30T01:34:41.35 0.1 undecidable manual P 289 35.3424 50 -0.15 95
IV.T1299.HNN. 2020-11-30T01:34:41.94 0.1 undecidable manual P 153 37.9287 50 0.04 97
IV.LNSS.HNZ. 2020-11-30T01:34:41.60 0.1 undecidable manual P 184 37.3293 50 -0.21 94
IV.MTRA.EHE. 2020-11-30T01:34:41.13 0.3 undecidable manual P 127 33.3444 50 -0.06 73
IV.MF5.EHZ. 2020-11-30T01:34:41.23 0.6 undecidable manual P 80 32.0457 50 0.24 47
IV.SNTG.HHE. 2020-11-30T01:34:41.68 0.1 undecidable manual P 343 36.6411 50 -0.02 97
IV.CESI.HHZ. 2020-11-30T01:34:40.97 0.3 undecidable manual S 299 15.3735 126 -0.2 73
IV.GUMA.HHZ. 2020-11-30T01:34:40.20 0.3 undecidable manual P 57 25.4523 50 0.22 71
IV.NRCA.HHZ. 2020-11-30T01:34:39.98 0.3 undecidable manual S 163 12.1767 132 -0.35 71
IV.MMO1.EHZ. 2020-11-30T01:34:39.25 0.1 undecidable manual P 102 21.2676 50 -0.08 99
IT.MTCL.HGE. 2020-11-30T01:34:39.22 0.3 undecidable manual S 317 8.3805 143 -0.21 74
IV.PF6.EHZ. 2020-11-30T01:34:39.62 0.6 undecidable manual P 24 24.2535 50 -0.17 48
IV.MC2.EHZ. 2020-11-30T01:34:39.75 0.3 undecidable manual S 107 10.0788 137 -0.05 76
IV.FDMO.HHZ. 2020-11-30T01:34:39.83 0.3 undecidable manual S 7 10.878 135 -0.17 74
IV.CSP1.EHZ. 2020-11-30T01:34:39.19 0.1 positive manual P 33 20.1687 50 0.03 100
IV.FEMA.HNE. 2020-11-30T01:34:38.97 0.3 undecidable manual S 327 3.0969 164 0.38 72
IV.CESI.HHZ. 2020-11-30T01:34:38.51 0.1 positive manual P 299 15.3735 126 0.1 99
IV.FDMO.HHZ. 2020-11-30T01:34:37.87 0.3 positive manual P 7 10.878 135 0.14 75
IV.FEMA.HNE. 2020-11-30T01:34:37.07 0.3 undecidable manual P 327 3.0969 164 0.16 75
IV.NRCA.HHZ. 2020-11-30T01:34:37.88 0.3 positive manual P 163 12.1767 132 -0.04 76
IT.MTCL.HGE. 2020-11-30T01:34:37.44 0.3 undecidable manual P 317 8.3805 143 0.04 76
IV.MC2.EHZ. 2020-11-30T01:34:37.71 0.3 undecidable manual P 107 10.0788 137 0.09 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.4 0.000255 0.62 AML other m 2020-11-30T01:34:40.37
IV.FDMO.HHE. ML:1.3 0.0002405 0.58 AML other m 2020-11-30T01:34:40.40
IV.NRCA.HHE. ML:1.2 0.00014900000000000002 0.82 AML other m 2020-11-30T01:34:41.44
IV.CESI.HHN. ML:0.4 0.00040849999999999995 0.16 AML other m 2020-11-30T01:34:41.42
IV.CESI.HHE. ML:0.7 0.00027049999999999996 0.22 AML other m 2020-11-30T01:34:41.53
IV.CSP1.EHN. ML:1.6 0.000306 0.64 AML other m 2020-11-30T01:34:43.77
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