Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 17-04-2023 and time 05:07:47 (Italy) in region 1 km W Sigillo (PG)

A magnitude ML 0.9 earthquake occured in region: 1 km W Sigillo (PG), on

  • 17-04-2023 03:07:47 (UTC)
  • 17-04-2023 05:07:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3290, 12.7280 at 0 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
Sigillo PG 1 2404 2404
Costacciaro PG 4 1216 3620
Fossato di Vico PG 5 2840 6460
Scheggia e Pascelupo PG 10 1393 7853
Gualdo Tadino PG 12 15208 23061
Gubbio PG 12 32216 55277
Fabriano AN 14 31480 86757
Sassoferrato AN 16 7285 94042
Cantiano PU 18 2245 96287
Serra Sant'Abbondio PU 18 1027 97314
Esanatoglia MC 20 2034 99348

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NE of Perugia (166134 inhabitants)
42 Km N of Foligno (57155 inhabitants)
62 Km SW of Fano (60888 inhabitants)
66 Km S of Pesaro (94582 inhabitants)
70 Km E of Arezzo (99543 inhabitants)
72 Km W of Ancona (100861 inhabitants)
83 Km S of Rimini (147750 inhabitants)
86 Km N of Terni (111501 inhabitants)
98 Km SE of Cesena (96758 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 0.9 2023-04-17
03:07:47		 43.3292 12.7285 0 2023-04-17
03:16:30		 Sala Sismica INGV-Roma 116444411
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-17 03:07:47 ± 0.09
Latitude 43.3292 ± 0.0036
Longitude 12.7285 ± 0.0062
Depth (km) 0 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 116444411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 550
Semi-minor axis of confidence ellipse (meter) 400
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 67
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30127
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 3
Type of magnitude ML
Reference to an origin 116444411
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-17 03:16:30
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2023-04-17T03:07:57.28 0.3 undecidable manual S 326 27.75 90 -0.17 71
IV.FRON.EHZ. 2023-04-17T03:07:55.06 0.1 undecidable manual S 359 20.9679 90 -0.04 99
IV.ATCC.EHZ. 2023-04-17T03:07:54.00 0.3 undecidable manual S 204 17.4714 90 0.09 74
IV.FDMO.HHZ. 2023-04-17T03:07:54.13 3.0 undecidable manual P -2.61 0
IV.TSM5.DHZ.01 2023-04-17T03:07:54.65 0.3 undecidable manual S 329 19.5693 90 0.03 74
IV.SNTG.HHZ. 2023-04-17T03:07:54.40 0.3 undecidable manual S 116 18.9699 90 -0.03 74
IV.PIEI.HHZ. 2023-04-17T03:07:53.42 0.3 undecidable manual P 326 27.75 90 0.03 73
IV.NARO.HHZ. 2023-04-17T03:07:53.66 0.6 undecidable manual P 339 33.4443 90 -0.88 38
IV.SNTG.HHZ. 2023-04-17T03:07:52.37 0.3 undecidable manual P 116 18.9699 90 0.73 62
IV.SSFR.HHZ. 2023-04-17T03:07:52.80 0.3 undecidable manual S 20 12.6762 91 0.57 66
IV.ARVD.HHZ. 2023-04-17T03:07:52.56 0.3 undecidable manual P 42 25.4523 90 -0.37 69
IV.ATCC.EHZ. 2023-04-17T03:07:51.55 0.3 undecidable manual P 204 17.4714 90 0.21 72
IV.TSM5.DHZ.01 2023-04-17T03:07:51.83 0.3 undecidable manual P 329 19.5693 90 0.08 74
IV.FRON.EHZ. 2023-04-17T03:07:51.76 0.1 undecidable manual P 359 20.9679 90 -0.27 94
IV.TSM1.DHZ.01 2023-04-17T03:07:51.75 0.3 undecidable manual S 280 10.6782 91 0.2 73
IV.SSFR.HHZ. 2023-04-17T03:07:50.53 0.1 undecidable manual P 20 12.6762 91 0.16 98
IV.TSM1.DHZ.01 2023-04-17T03:07:49.92 0.1 undecidable manual P 280 10.6782 91 -0.06 100
IV.FOSV.EHZ. 2023-04-17T03:07:48.87 0.3 undecidable manual S 145 4.5954 92 -0.57 67
IV.FOSV.EHZ. 2023-04-17T03:07:48.86 1.0 undecidable manual P 145 4.5954 92 0.1 25
IV.ATSC.EHZ. 2023-04-17T03:07:42.50 3.0 undecidable manual S 0
IV.ATSC.EHZ. 2023-04-17T03:07:39.84 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SSFR.HHE. ML:0.9 0.0001215 1.76 AML other m 2023-04-17T03:07:53.99
IV.SSFR.HHN. ML:0.8 0.00009356820000000001 0.12 AML other m 2023-04-17T03:07:53.77
IV.FOSV.EHE. ML:0.0 0.000032003995 0.2992 AML other m 2023-04-17T03:07:50.71
IV.FOSV.EHN. ML:0.0 0.000056481174999999995 0.08 AML other m 2023-04-17T03:07:50.08
IV.SSFR.HNE. ML:1.1 0.00016277609999999998 0.1888 AML other m 2023-04-17T03:07:54.04
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