Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 08-04-2020 and time 02:16:51 (Italy) in region 2 km W Visso (MC)

A magnitude ML 0.8 earthquake occured in region: 2 km W Visso (MC), on

  • 08-04-2020 00:16:51 (UTC)
  • 08-04-2020 02:16:51 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9390, 13.0660 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
Monte Cavallo MC 8 145 2420
Castelsantangelo sul Nera MC 9 281 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 15 142 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)
58 Km E of Perugia (166134 inhabitants)
61 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)
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 0.8 2020-04-08
00:16:51		 42.939 13.0663 10 2020-04-08
00:30:57		 Sala Sismica INGV-Roma 77999091
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-08 00:16:51 ± 0.1
Latitude 42.9390 ± 0.0045
Longitude 13.0663 ± 0.0061
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77999091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 439
Semi-minor axis of confidence ellipse (meter) 372
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.02608
Epicentral distance of station farthest from the epicenter (degree) 0.29138
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 77999091
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-08 00:30:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2020-04-08T00:17:03.48 0.3 undecidable manual S 80 32.3454 50 0.53 64
IV.MMO1.EHZ. 2020-04-08T00:16:59.37 0.3 undecidable manual S 102 21.5673 114 -0.34 69
IV.CSP1.EHZ. 2020-04-08T00:16:59.17 0.3 undecidable manual S 33 20.3685 115 -0.13 72
IV.CESI.HHZ. 2020-04-08T00:16:57.56 0.3 undecidable manual S 299 15.0738 122 -0.13 73
IV.MF5.EHZ. 2020-04-08T00:16:57.90 0.1 undecidable manual P 80 32.3454 50 -0.22 92
IV.FDMO.HHZ. 2020-04-08T00:16:56.49 0.3 undecidable manual S 9 10.9779 131 -0.06 74
IV.MC2.EHZ. 2020-04-08T00:16:56.66 0.3 undecidable manual S 107 10.3785 132 0.25 71
IV.MMO1.EHZ. 2020-04-08T00:16:56.03 0.1 undecidable manual P 102 21.5673 114 -0.21 94
IV.NRCA.HNN. 2020-04-08T00:16:56.76 0.3 undecidable manual S 162 12.3765 128 -0.16 72
IV.CESI.HHZ. 2020-04-08T00:16:55.04 0.1 undecidable manual P 299 15.0738 122 -0.04 99
IT.MTCL.HGZ. 2020-04-08T00:16:55.75 0.3 undecidable manual S 318 8.1807 139 -0.12 74
IV.CSP1.EHZ. 2020-04-08T00:16:55.87 0.1 undecidable manual P 33 20.3685 115 -0.14 96
IV.FEMA.HNZ. 2020-04-08T00:16:55.33 0.3 undecidable manual S 332 2.8971 163 0.36 71
IV.NRCA.HNN. 2020-04-08T00:16:54.61 0.1 undecidable manual P 162 12.3765 128 -0.02 99
IT.MTCL.HGZ. 2020-04-08T00:16:54.05 0.1 undecidable manual P 318 8.1807 139 0.03 100
IV.FDMO.HHZ. 2020-04-08T00:16:54.45 0.1 undecidable manual P 9 10.9779 131 0.03 99
IV.MC2.EHZ. 2020-04-08T00:16:54.53 0.1 undecidable manual P 107 10.3785 132 0.19 96
IV.FEMA.HNZ. 2020-04-08T00:16:53.75 0.1 undecidable manual P 332 2.8971 163 0.24 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHE. ML:0.5 0.0000409 0.4 AML other m 2020-04-08T00:16:56.87
IV.FDMO.HHN. ML:0.6 0.000051000000000000006 0.12 AML other m 2020-04-08T00:16:57.13
IV.CESI.HHN. ML:1.1 0.0001305 0.16 AML other m 2020-04-08T00:16:57.98
IV.CESI.HHE. ML:0.9 0.0000789 1.8 AML other m 2020-04-08T00:16:57.00
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