Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 30-11-2020 and time 01:43:26 (UTC) in region 2 km W Visso (MC)

A magnitude ML 1.7 earthquake occured in region: 2 km W Visso (MC), on

  • 30-11-2020 01:43:26 (UTC)
  • 30-11-2020 02:43:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.94, 13.07 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
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 9 145 2701
Fiordimonte MC 11 202 2903
Pieve Torina MC 12 1458 4361
Sellano PG 13 1079 5440
Fiastra MC 13 559 5999
Acquacanina MC 14 121 6120
Pievebovigliana MC 14 866 6986
Bolognola MC 14 142 7128
Norcia PG 16 4957 12085
Muccia MC 17 915 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)
70 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
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 1.7 2020-11-30
01:43:26		 42.94 13.07 10 2020-11-30
02:01:12		 Sala Sismica INGV-Roma 85098451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-30 01:43:26 ± 0.05
Latitude 42.94 ± 0.00
Longitude 13.07 ± 0.00
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 85098451

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 337
Semi-minor axis of confidence ellipse (meter) 321
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 98
Circular confidence region, given by single value of horizontal uncertainty (meter) 340
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 48
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.48294
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 37
Type of magnitude ML
Reference to an origin 85098451
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-30 02:01:12
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2020-11-30T01:43:47.30 3.0 undecidable manual S -0.23 0
IV.CESX.HHE. 2020-11-30T01:43:43.86 0.3 undecidable manual S 227 0.4829 50 0.08 69
IV.CING.HHE. 2020-11-30T01:43:42.92 0.3 undecidable manual S 12 0.4488 50 0.17 68
IV.MOMA.HHZ. 2020-11-30T01:43:41.47 0.3 undecidable manual S 250 0.3903 50 0.45 65
IV.ARRO.EHE. 2020-11-30T01:43:41.79 0.3 undecidable manual S 212 0.4209 50 -0.16 69
IV.MNTP.HNE. 2020-11-30T01:43:41.58 0.3 undecidable manual S 55 0.3534 50 1.63 37
IV.T1299.EHN. 2020-11-30T01:43:39.66 0.3 undecidable manual S 153 0.339 50 0.14 70
IT.FOPC.HGZ. 2020-11-30T01:43:37.57 0.3 undecidable manual S 277 0.2707 50 0.07 72
IV.MTRA.HNE. 2020-11-30T01:43:37.87 0.3 undecidable manual S 127 0.2986 50 -0.45 67
IV.MDAR.HNZ. 2020-11-30T01:43:36.81 0.3 undecidable manual S 12 0.2617 50 -0.41 68
IV.TERO.HHZ. 2020-11-30T01:43:36.79 3.0 undecidable manual P -0.47 0
IV.CESX.HHE. 2020-11-30T01:43:36.31 0.6 undecidable manual P 227 0.4829 50 -0.28 44
IV.GUMA.HHZ. 2020-11-30T01:43:36.63 0.3 undecidable manual S 57 0.2311 111 0.32 69
IV.MNTT.EHZ. 2020-11-30T01:43:35.87 3.0 positive manual P 0.31 0
IV.CING.HHE. 2020-11-30T01:43:35.75 0.3 undecidable manual P 12 0.4488 50 -0.25 68
IV.PF6.EHZ. 2020-11-30T01:43:35.46 0.3 undecidable manual S 24 0.2203 112 -0.49 67
IV.ARRO.EHE. 2020-11-30T01:43:35.40 0.3 undecidable manual P 212 0.4209 50 -0.13 70
IV.EL6.EHZ. 2020-11-30T01:43:34.88 3.0 negative manual P -0.31 0
IV.MNTP.HNE. 2020-11-30T01:43:34.76 0.3 undecidable manual P 55 0.3534 50 0.38 67
IV.CSP1.EHZ. 2020-11-30T01:43:34.56 0.3 undecidable manual S 32 0.1835 116 -0.08 73
IV.MMO1.EHZ. 2020-11-30T01:43:34.64 0.3 undecidable manual S 101 0.1907 115 -0.25 71
IV.SMA1.EHZ. 2020-11-30T01:43:34.75 3.0 negative manual P 0.15 0
IV.MOMA.HHZ. 2020-11-30T01:43:34.70 0.3 undecidable manual P 250 0.3903 50 -0.3 68
IV.T1299.EHN. 2020-11-30T01:43:34.15 0.3 undecidable manual P 153 0.339 50 0.02 72
IV.CESI.HHZ. 2020-11-30T01:43:33.19 0.3 undecidable manual S 300 0.1394 123 0.03 75
IV.MF5.EHZ. 2020-11-30T01:43:33.48 3.0 positive manual P 0.04 0
IV.LNSS.HHZ. 2020-11-30T01:43:33.89 3.0 positive manual P -0.03 0
IV.ASSB.HHZ. 2020-11-30T01:43:33.45 3.0 positive manual P -0.12 0
IV.MTRA.HNE. 2020-11-30T01:43:33.12 0.3 undecidable manual P 127 0.2986 50 -0.31 69
IV.SAP2.EHZ. 2020-11-30T01:43:33.52 3.0 negative manual P 0.1 0
IV.SNTG.HHZ. 2020-11-30T01:43:33.90 3.0 undecidable manual P -0.09 0
IV.GUMA.HHZ. 2020-11-30T01:43:32.32 0.1 undecidable manual P 57 0.2311 111 0.04 98
IT.FOPC.HGZ. 2020-11-30T01:43:32.81 0.1 undecidable manual P 277 0.2707 50 -0.15 95
IV.NRCA.HHZ. 2020-11-30T01:43:32.08 0.3 undecidable manual S 163 0.1079 130 -0.08 74
IV.MDAR.HNZ. 2020-11-30T01:43:32.67 0.3 undecidable manual P 12 0.2617 50 -0.13 72
IT.MTCL.HGZ. 2020-11-30T01:43:31.26 0.3 undecidable manual S 318 0.0773 139 -0.08 75
IV.PF6.EHZ. 2020-11-30T01:43:31.73 0.1 undecidable manual P 24 0.2203 112 -0.34 92
IV.FDMO.HHZ. 2020-11-30T01:43:31.92 0.3 undecidable manual S 7 0.1007 132 -0.05 75
IV.MC2.EHZ. 2020-11-30T01:43:31.94 0.3 undecidable manual S 106 0.0899 135 0.28 72
IV.CSP1.EHZ. 2020-11-30T01:43:31.25 0.3 positive manual P 32 0.1835 116 -0.06 74
IV.MMO1.EHZ. 2020-11-30T01:43:31.34 0.1 positive manual P 101 0.1907 115 -0.12 97
IV.CESI.HHZ. 2020-11-30T01:43:30.54 0.1 positive manual P 300 0.1394 123 0.08 99
IV.FEMA.HNZ. 2020-11-30T01:43:30.60 0.3 undecidable manual S 329 0.0297 161 0.19 75
IV.FEMA.HNZ. 2020-11-30T01:43:29.15 0.1 undecidable manual P 329 0.0297 161 0.28 97
IV.NRCA.HHZ. 2020-11-30T01:43:29.95 0.1 positive manual P 163 0.1079 130 0.07 100
IT.MTCL.HGZ. 2020-11-30T01:43:29.50 0.1 undecidable manual P 318 0.0773 139 0.09 100
IV.FDMO.HHZ. 2020-11-30T01:43:29.86 0.1 undecidable manual P 7 0.1007 132 0.09 100
IV.MC2.EHZ. 2020-11-30T01:43:29.82 0.1 undecidable manual P 106 0.0899 135 0.23 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FEMA.HNE. ML:2.1 0.002503718 0.2 AML other m 2020-11-30T01:43:30.90
IV.FEMA.HNN. ML:1.9 0.0013774279 0.1104 AML other m 2020-11-30T01:43:30.93
IV.FDMO.HHE. ML:1.8 0.00074637255 0.16 AML other m 2020-11-30T01:43:32.10
IV.FDMO.HHN. ML:1.5 0.0004025885 0.12 AML other m 2020-11-30T01:43:32.43
IV.NRCA.HHE. ML:1.8 0.0006614356 0.12 AML other m 2020-11-30T01:43:32.23
IV.NRCA.HHN. ML:1.7 0.00063915745 0.14 AML other m 2020-11-30T01:43:32.13
IV.NRCA.HNE. ML:1.7 0.00061361825 0.12 AML other m 2020-11-30T01:43:33.11
IV.NRCA.HNN. ML:1.7 0.00062906845 0.16 AML other m 2020-11-30T01:43:32.13
IV.CESI.HHE. ML:1.7 0.0004556362475 0.16 AML other m 2020-11-30T01:43:33.59
IV.CESI.HHN. ML:2.1 0.001230296 0.22 AML other m 2020-11-30T01:43:33.47
IV.CESI.HNE. ML:1.6 0.000380385635 0.1496 AML other m 2020-11-30T01:43:33.59
IV.CESI.HNN. ML:2.1 0.0012583505 0.24 AML other m 2020-11-30T01:43:33.47
IV.CSP1.EHE. ML:1.9 0.0006022015 0.1 AML other m 2020-11-30T01:43:35.00
IV.CSP1.EHN. ML:2.1 0.0008582278 0.26 AML other m 2020-11-30T01:43:34.83
IV.GUMA.HHE. ML:1.9 0.00042966755 0.22 AML other m 2020-11-30T01:43:37.39
IV.GUMA.HHN. ML:1.9 0.00050838225 0.16 AML other m 2020-11-30T01:43:36.77
IV.GUMA.HNE. ML:1.8 0.00034729545 0.14 AML other m 2020-11-30T01:43:37.01
IV.GUMA.HNN. ML:1.9 0.000424253655 0.1304 AML other m 2020-11-30T01:43:36.76
IV.ASSB.HHE. ML:1.6 0.000139589 0.1 AML other m 2020-11-30T01:43:38.84
IV.ASSB.HHN. ML:1.7 0.00020675325 0.16 AML other m 2020-11-30T01:43:38.85
IV.MF5.EHE. ML:1.8 0.00026244725 0.2 AML other m 2020-11-30T01:43:39.30
IV.MF5.EHN. ML:1.6 0.00017105535 0.2 AML other m 2020-11-30T01:43:39.32
IV.SAP2.EHE. ML:1.6 0.00018053565 0.2 AML other m 2020-11-30T01:43:39.73
IV.SAP2.EHN. ML:2.2 0.0007635122 0.18 AML other m 2020-11-30T01:43:39.39
IV.LNSS.HHE. ML:1.4 9.471011E-5 0.12 AML other m 2020-11-30T01:43:41.86
IV.LNSS.HHN. ML:1.6 0.0001403906 0.14 AML other m 2020-11-30T01:43:40.59
IV.SNTG.HHE. ML:1 3.597699595E-5 0.12 AML other m 2020-11-30T01:43:41.54
IV.SNTG.HHN. ML:0.8 2.3734075E-5 0.14 AML other m 2020-11-30T01:43:41.93
IV.SMA1.EHE. ML:1.1 4.5282615E-5 0.12 AML other m 2020-11-30T01:43:42.24
IV.SMA1.EHN. ML:1 3.37125435E-5 0.14 AML other m 2020-11-30T01:43:41.45
IV.EL6.EHE. ML:1.5 9.0596318E-5 0.26 AML other m 2020-11-30T01:43:41.47
IV.EL6.EHN. ML:1.7 0.00014634261 0.18 AML other m 2020-11-30T01:43:41.99
IV.MOMA.HHE. ML:1.4 7.145729E-5 0.18 AML other m 2020-11-30T01:43:43.57
IV.MOMA.HHN. ML:1.4 7.959748E-5 0.16 AML other m 2020-11-30T01:43:43.03
IV.MOMA.HNE. ML:0.9 2.4740655E-5 0.08 AML other m 2020-11-30T01:43:43.58
IV.TERO.HHE. ML:1.1 3.2239935E-5 0.16 AML other m 2020-11-30T01:43:45.11
IV.TERO.HHN. ML:1.1 3.0793425E-5 0.12 AML other m 2020-11-30T01:43:46.16
IV.TERO.HNE. ML:1.3 4.6914772E-5 0.1304 AML other m 2020-11-30T01:43:46.29
IV.TERO.HNN. ML:1.3 5.045121E-5 0.12 AML other m 2020-11-30T01:43:45.13
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