Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 03-04-2020 and time 21:17:30 (UTC) in region 3 km SE Sefro (MC)

A magnitude ML 0.8 earthquake occured in region: 3 km SE Sefro (MC), on

  • 03-04-2020 21:17:30 (UTC)
  • 03-04-2020 23:17:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.1230, 12.9680 at 11 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
Sefro MC 3 422 422
Serravalle di Chienti MC 6 1070 1492
Pioraco MC 7 1134 2626
Muccia MC 8 915 3541
Fiuminata MC 8 1402 4943
Camerino MC 8 6974 11917
Pieve Torina MC 11 1458 13375
Pievebovigliana MC 12 866 14241
Castelraimondo MC 12 4587 18828
Fiordimonte MC 14 202 19030
Nocera Umbra PG 14 5839 24869
Esanatoglia MC 15 2034 26903
Monte Cavallo MC 15 145 27048
Matelica MC 15 9981 37029
Gagliole MC 15 620 37649
Fiastra MC 18 559 38208
Valtopina PG 19 1398 39606
Serrapetrona MC 19 966 40572
Gualdo Tadino PG 19 15208 55780
Acquacanina MC 20 121 55901

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NE of Foligno (57155 inhabitants)
47 Km E of Perugia (166134 inhabitants)
68 Km NE of Terni (111501 inhabitants)
71 Km SW of Ancona (100861 inhabitants)
79 Km NW of Teramo (54892 inhabitants)
80 Km S of Fano (60888 inhabitants)
88 Km S of Pesaro (94582 inhabitants)
93 Km NW of L'Aquila (69753 inhabitants)
96 Km E of Arezzo (99543 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 2020-04-03
21:17:30		 43.1232 12.9675 11 2020-04-03
21:21:17		 Sala Sismica INGV-Roma 77849141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-03 21:17:30 ± 0.04
Latitude 43.1232 ± 0.0018
Longitude 12.9675 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77849141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 352
Semi-minor axis of confidence ellipse (meter) 204
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 262
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.1
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.37502
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 77849141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-03 21:21:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CADA.HNZ. 2020-04-03T21:17:53.58 3.0 undecidable manual S 0.4 0
IV.EL6.EHZ. 2020-04-03T21:17:40.39 0.1 undecidable manual S 25 25.3524 50 0.16 95
IV.ARVD.HHZ. 2020-04-03T21:17:38.63 1.0 undecidable manual P 357 41.625 50 -0.2 23
IV.CSP1.EHZ. 2020-04-03T21:17:38.61 0.1 undecidable manual S 100 19.5693 50 -0.07 98
IV.MMO1.EHZ. 2020-04-03T21:17:38.11 0.6 positive manual P 130 38.3283 50 -0.21 46
IV.SNTG.HHZ. 2020-04-03T21:17:37.29 0.1 undecidable manual S 352 14.7741 126 -0.07 99
IV.CESI.HHZ. 2020-04-03T21:17:37.17 0.1 undecidable manual S 201 14.0748 128 0.01 100
IV.EL6.EHZ. 2020-04-03T21:17:36.31 0.6 positive manual P 25 25.3524 50 0 49
IV.ATCC.EHZ. 2020-04-03T21:17:36.64 0.6 negative manual P 285 27.3504 50 0 49
IV.FOSV.EHZ. 2020-04-03T21:17:36.25 0.1 positive manual P 319 25.3524 50 -0.07 97
IV.CSP1.EHZ. 2020-04-03T21:17:35.55 0.6 undecidable manual P 100 19.5693 50 0.12 48
IV.CESI.HHZ. 2020-04-03T21:17:34.63 0.1 negative manual P 201 14.0748 128 0.09 99
IV.SNTG.HHZ. 2020-04-03T21:17:34.68 0.6 undecidable manual P 352 14.7741 126 0.02 50
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHN. ML:1.0 0.0000988 0.24 AML other m 2020-04-03T21:17:37.45
IV.CESI.HHE. ML:1.1 0.000131 0.4 AML other m 2020-04-03T21:17:37.40
IV.SNTG.HHE. ML:0.5 0.000032349999999999994 0.1 AML other m 2020-04-03T21:17:37.54
IV.SNTG.HHN. ML:0.7 0.000046399999999999996 0.12 AML other m 2020-04-03T21:17:37.51
IV.FOSV.EHE. ML:0.6 0.0000248 0.3 AML other m 2020-04-03T21:17:40.39
IV.FOSV.EHN. ML:0.7 0.000029350000000000002 0.28 AML other m 2020-04-03T21:17:40.73
IV.ATCC.EHN. ML:0.8 0.0000371 0.58 AML other m 2020-04-03T21:17:41.27
IV.ATCC.EHE. ML:0.8 0.000029350000000000002 0.18 AML other m 2020-04-03T21:17:41.27
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