Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 04-10-2022 and time 03:59:20 (UTC) in region 1 km NW Gualdo Tadino (PG)

A magnitude ML 0.8 earthquake occured in region: 1 km NW Gualdo Tadino (PG), on

  • 04-10-2022 03:59:20 (UTC)
  • 04-10-2022 05:59:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2410, 12.7720 at 12 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
Gualdo Tadino PG 2 15208 15208
Fossato di Vico PG 6 2840 18048
Sigillo PG 11 2404 20452
Costacciaro PG 14 1216 21668
Fiuminata MC 14 1402 23070
Esanatoglia MC 14 2034 25104
Nocera Umbra PG 14 5839 30943
Fabriano AN 15 31480 62423
Valfabbrica PG 16 3389 65812
Sefro MC 18 422 66234
Pioraco MC 19 1134 67368
Matelica MC 19 9981 77349
Cerreto d'Esi AN 20 3817 81166

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km N of Foligno (57155 inhabitants)
34 Km E of Perugia (166134 inhabitants)
70 Km S of Fano (60888 inhabitants)
74 Km SW of Ancona (100861 inhabitants)
75 Km S of Pesaro (94582 inhabitants)
76 Km E of Arezzo (99543 inhabitants)
76 Km N of Terni (111501 inhabitants)
93 Km S of Rimini (147750 inhabitants)
100 Km NW of Teramo (54892 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 2022-10-04
03:59:20		 43.2407 12.7725 13 2022-10-04
04:05:53		 Sala Sismica INGV-Roma 110469671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-10-04 03:59:20 ± 0.07
Latitude 43.2407 ± 0.0036
Longitude 12.7725 ± 0.0037
Depth (km) 13 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 110469671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 352
Semi-minor axis of confidence ellipse (meter) 203
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 137
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) 81
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.15
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.27879
Number of stations at which the event was observed 8
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 4
Type of magnitude ML
Reference to an origin 110469671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-10-04 04:05:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2022-10-04T03:59:30.81 0.3 undecidable manual S 353 30.9468 94 -0.19 70
IV.SSFR.HHZ. 2022-10-04T03:59:28.50 0.1 undecidable manual S 2 21.7671 99 -0.05 98
IV.ASSB.HHZ. 2022-10-04T03:59:28.89 0.1 undecidable manual S 203 23.8539 97 -0.21 95
IV.MURB.HHZ. 2022-10-04T03:59:28.29 0.1 undecidable manual S 277 20.1687 101 0.15 97
IV.FDMO.HHZ. 2022-10-04T03:59:27.25 3.0 positive manual P 0.29 0
IV.CESI.HHZ. 2022-10-04T03:59:26.02 0.1 undecidable manual P 158 28.2495 95 -0.03 98
IV.SNTG.HHZ. 2022-10-04T03:59:26.56 0.1 undecidable manual S 83 13.6752 115 0.08 98
IV.FRON.EHZ. 2022-10-04T03:59:26.48 0.1 undecidable manual P 353 30.9468 94 0.02 97
IV.SSFR.HHZ. 2022-10-04T03:59:25.04 0.1 undecidable manual P 2 21.7671 99 0 99
IV.ASSB.HHZ. 2022-10-04T03:59:25.29 0.1 undecidable manual P 203 23.8539 97 -0.08 97
IV.SNTG.HHZ. 2022-10-04T03:59:24.03 0.1 undecidable manual P 83 13.6752 115 0.18 96
IV.MURB.HHZ. 2022-10-04T03:59:24.96 0.1 undecidable manual P 277 20.1687 101 0.15 97
IV.FOSV.EHZ. 2022-10-04T03:59:24.75 0.1 undecidable manual S 351 6.0939 147 -0.2 98
IV.FOSV.EHZ. 2022-10-04T03:59:23.04 0.1 negative manual P 351 6.0939 147 0.07 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FOSV.EHE. ML:0.6 0.000056099999999999995 0.18 AML other m 2022-10-04T03:59:24.89
IV.FOSV.EHN. ML:0.7 0.00006695 0.2 AML other m 2022-10-04T03:59:24.83
IV.MURB.HHN. ML:0.9 0.0000593 0.42 AML other m 2022-10-04T03:59:28.78
IV.MURB.HHE. ML:1.0 0.0000762 0.16 AML other m 2022-10-04T03:59:28.80
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