Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 04-03-2020 and time 22:10:51 (UTC) in region 1 km W Visso (MC)

A magnitude ML 1.1 earthquake occured in region: 1 km W Visso (MC), on

  • 04-03-2020 22:10:51 (UTC)
  • 04-03-2020 23:10:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9360, 13.0760 at 13 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 1 1107 1107
Ussita MC 5 444 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
Fiastra MC 13 559 4920
Sellano PG 13 1079 5999
Acquacanina MC 13 121 6120
Bolognola MC 14 142 6262
Pievebovigliana MC 14 866 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)
99 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
Reviewed
Rev100 		ML 1.1 2020-03-04
22:10:51		 42.9357 13.0762 13 2020-03-04
22:17:29		 Sala Sismica INGV-Roma 77030481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-04 22:10:51 ± 0.13
Latitude 42.9357 ± 0.0090
Longitude 13.0762 ± 0.0098
Depth (km) 13 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77030481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 864
Semi-minor axis of confidence ellipse (meter) 461
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 5
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 134
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.08633
Epicentral distance of station farthest from the epicenter (degree) 0.28509
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 77030481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-04 22:17:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2020-03-04T22:11:02.67 0.1 undecidable manual S 79 31.6461 97 0.66 79
IV.MMO1.EHZ. 2020-03-04T22:10:58.66 0.1 undecidable manual S 101 20.7681 105 -0.49 91
IV.CSP1.EHZ. 2020-03-04T22:10:58.36 0.1 undecidable manual S 31 20.2686 105 -0.65 91
IV.CESI.HHZ. 2020-03-04T22:10:57.85 0.1 undecidable manual S 299 15.873 114 -0.07 99
IV.MF5.EHZ. 2020-03-04T22:10:57.64 0.1 undecidable manual P 79 31.6461 97 0.25 92
IV.MC2.EHZ. 2020-03-04T22:10:56.28 0.1 undecidable manual S 106 9.5793 134 -0.23 99
IV.NRCA.HHZ. 2020-03-04T22:10:56.71 0.1 undecidable manual S 165 11.7771 126 -0.25 97
IV.CESI.HHZ. 2020-03-04T22:10:55.06 0.1 undecidable manual P 299 15.873 114 0.04 98
IV.CSP1.EHZ. 2020-03-04T22:10:55.30 0.1 undecidable manual P 31 20.2686 105 -0.36 95
IV.MMO1.EHZ. 2020-03-04T22:10:55.53 0.1 undecidable manual P 101 20.7681 105 -0.2 96
IV.MC2.EHZ. 2020-03-04T22:10:54.16 0.1 negative manual P 106 9.5793 134 -0.06 99
IV.NRCA.HHZ. 2020-03-04T22:10:54.48 0.1 negative manual P 165 11.7771 126 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.2 0.00017545814999999997 0.1152 AML other m 2020-03-04T22:10:56.88
IV.NRCA.HHN. ML:1.3 0.00018071195 0.1536 AML other m 2020-03-04T22:10:56.86
IV.NRCA.HNE. ML:1.3 0.0001946796 0.4352 AML other m 2020-03-04T22:10:56.88
IV.NRCA.HNN. ML:1.5 0.000289015 0.7552 AML other m 2020-03-04T22:10:56.49
IV.CESI.HHE. ML:0.6 0.000028803809999999998 0.1024 AML other m 2020-03-04T22:10:57.93
IV.CESI.HHN. ML:0.6 0.000034892215000000006 0.0896 AML other m 2020-03-04T22:10:58.02
IV.CESI.HNE. ML:1.0 0.000083231205 1.152 AML other m 2020-03-04T22:10:57.54
IV.CESI.HNN. ML:1.2 0.00011369652 1.0112 AML other m 2020-03-04T22:10:57.73
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