Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 06-04-2020 and time 06:44:18 (UTC) in region 5 km NE Cerreto di Spoleto (PG)

A magnitude ML 0.8 earthquake occured in region: 5 km NE Cerreto di Spoleto (PG), on

  • 06-04-2020 06:44:18 (UTC)
  • 06-04-2020 08:44:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8490, 12.9720 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
Cerreto di Spoleto PG 6 1075 1075
Sellano PG 6 1079 2154
Preci PG 7 724 2878
Norcia PG 12 4957 7835
Vallo di Nera PG 13 364 8199
Visso MC 13 1107 9306
Cascia PG 15 3217 12523
Poggiodomo PG 16 117 12640
Castelsantangelo sul Nera MC 16 281 12921
Campello sul Clitunno PG 16 2442 15363
Monte Cavallo MC 16 145 15508
Sant'Anatolia di Narco PG 17 564 16072
Ussita MC 17 444 16516
Trevi PG 19 8469 24985
Scheggino PG 19 461 25446

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km E of Foligno (57155 inhabitants)
42 Km NE of Terni (111501 inhabitants)
55 Km SE of Perugia (166134 inhabitants)
64 Km W of Teramo (54892 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
86 Km NE of Viterbo (67173 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
96 Km N of Guidonia Montecelio (88673 inhabitants)
99 Km N of Tivoli (56533 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 2020-04-06
06:44:18		 42.8493 12.9718 10 2020-04-06
06:52:31		 Sala Sismica INGV-Roma 77947481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-06 06:44:18 ± 0.05
Latitude 42.8493 ± 0.0027
Longitude 12.9718 ± 0.0037
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 77947481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 372
Semi-minor axis of confidence ellipse (meter) 201
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.29588
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 77947481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-06 06:52:31
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MCIV.CHZ. 2020-04-06T06:44:48.67 3.0 undecidable manual S -4.4 0
IV.FIR.HHZ. 2020-04-06T06:44:46.62 3.0 undecidable manual Pn 0.15 0
IV.MMO1.EHZ. 2020-04-06T06:44:28.94 0.6 undecidable manual S 79 29.3484 50 -0.03 51
IV.FDMO.HHZ. 2020-04-06T06:44:27.04 0.6 undecidable manual S 24 22.755 114 -0.15 50
IV.MC2.EHZ. 2020-04-06T06:44:26.07 3.0 undecidable manual S 0.25 0
IV.CESI.HHZ. 2020-04-06T06:44:25.62 0.6 undecidable manual S 342 18.0708 120 -0.12 51
IV.CSP1.EHZ. 2020-04-06T06:44:25.15 0.6 positive manual P 35 32.8449 50 0.07 50
IV.MML1.HNE. 2020-04-06T06:44:24.59 0.3 undecidable manual P 360 29.3484 50 0.06 75
IV.MMO1.EHZ. 2020-04-06T06:44:24.56 0.6 positive manual P 79 29.3484 50 0.02 51
IV.LNSS.HHZ. 2020-04-06T06:44:24.21 0.1 undecidable manual P 168 27.8499 50 -0.1 100
IV.FDMO.HHZ. 2020-04-06T06:44:23.54 0.6 negative manual P 24 22.755 114 0.02 51
IV.NRCA.HHZ. 2020-04-06T06:44:23.89 0.6 undecidable manual S 99 11.6772 131 -0.04 52
IV.CESI.HHZ. 2020-04-06T06:44:22.78 0.3 positive manual P 342 18.0708 120 0.1 76
IV.NRCA.HHZ. 2020-04-06T06:44:21.76 0.3 undecidable manual P 99 11.6772 131 0.12 77
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:0.6 0.000049339980000000004 0.0992 AML other m 2020-04-06T06:44:24.96
IV.NRCA.HHN. ML:0.6 0.00004308932 0.1408 AML other m 2020-04-06T06:44:25.87
IV.NRCA.HNE. ML:1.0 0.000123303145 0.3616 AML other m 2020-04-06T06:44:25.98
IV.NRCA.HNN. ML:1.1 0.00014233025 0.8512 AML other m 2020-04-06T06:44:24.44
IV.CESI.HHE. ML:0.6 0.000035778175 0.0992 AML other m 2020-04-06T06:44:26.06
IV.CESI.HHN. ML:0.9 0.00006119972 0.0992 AML other m 2020-04-06T06:44:25.94
IV.CESI.HNN. ML:1.2 0.00012491845 0.48 AML other m 2020-04-06T06:44:27.51
IV.FDMO.HHE. ML:0.8 0.000039016225 0.24 AML other m 2020-04-06T06:44:27.16
IV.FDMO.HHN. ML:0.7 0.000035176225000000006 0.1216 AML other m 2020-04-06T06:44:27.50
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