Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 30-10-2023 and time 20:52:18 (UTC) in region 7 km SE Gualdo Tadino (PG)

A magnitude ML 1.4 earthquake occured in region: 7 km SE Gualdo Tadino (PG), on

  • 30-10-2023 20:52:18 (UTC)
  • 30-10-2023 21:52:18 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1810, 12.8360 at 16 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 7 15208 15208
Fiuminata MC 8 1402 16610
Nocera Umbra PG 9 5839 22449
Sefro MC 10 422 22871
Esanatoglia MC 12 2034 24905
Pioraco MC 12 1134 26039
Fossato di Vico PG 14 2840 28879
Valtopina PG 15 1398 30277
Serravalle di Chienti MC 15 1070 31347
Matelica MC 17 9981 41328
Castelraimondo MC 18 4587 45915
Fabriano AN 18 31480 77395
Sigillo PG 19 2404 79799
Valfabbrica PG 19 3389 83188
Camerino MC 20 6974 90162
Cerreto d'Esi AN 20 3817 93979

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NE of Foligno (57155 inhabitants)
37 Km E of Perugia (166134 inhabitants)
71 Km N of Terni (111501 inhabitants)
74 Km SW of Ancona (100861 inhabitants)
75 Km S of Fano (60888 inhabitants)
82 Km S of Pesaro (94582 inhabitants)
83 Km E of Arezzo (99543 inhabitants)
91 Km NW of Teramo (54892 inhabitants)
100 Km S of Rimini (147750 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 1.4 2023-10-30
20:52:18		 43.1807 12.8362 16 2023-10-30
21:01:42		 Sala Sismica INGV-Roma 122592891
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-30 20:52:18 ± 0.1
Latitude 43.1807 ± 0.0036
Longitude 12.8362 ± 0.0062
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 122592891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 543
Semi-minor axis of confidence ellipse (meter) 145
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 64
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 170
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 16
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) 0.32645
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 122592891
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-30 21:01:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.INTR.HNZ. 2023-10-30T20:52:55.96 3.0 undecidable manual Sn -0.39 0
IV.CAFI.HHZ. 2023-10-30T20:52:47.23 3.0 undecidable manual S 2.63 0
IT.OPI.HGZ. 2023-10-30T20:52:38.50 3.0 undecidable manual Pn -2.92 0
IV.ARCI.HHZ. 2023-10-30T20:52:37.67 3.0 undecidable manual P 0.46 0
IV.MURB.HNZ. 2023-10-30T20:52:30.45 3.0 undecidable manual S -1.44 0
IV.FDMO.HHZ. 2023-10-30T20:52:28.39 0.3 undecidable manual S 128 25.8519 108 0 74
IV.MURB.HHZ. 2023-10-30T20:52:28.34 3.0 undecidable manual P 3.16 0
IV.PIEI.HHZ. 2023-10-30T20:52:27.42 3.0 positive manual P -0.74 0
IV.CESI.HHZ. 2023-10-30T20:52:26.98 0.3 undecidable manual S 164 20.2686 116 -0.03 73
IV.CING.HHZ. 2023-10-30T20:52:26.59 0.6 undecidable manual P 53 36.1416 101 0.71 40
IV.ARVD.HHZ. 2023-10-30T20:52:25.76 0.3 undecidable manual P 14 36.2415 101 -0.13 71
IV.SNTG.HHZ. 2023-10-30T20:52:25.01 0.3 undecidable manual S 46 11.7771 135 -0.14 73
IV.FOSV.EHZ. 2023-10-30T20:52:25.67 0.3 undecidable manual S 334 14.0748 129 0.08 75
IV.CSP1.EHZ. 2023-10-30T20:52:25.16 0.3 undecidable manual P 108 31.4463 104 -0.01 73
IV.MML1.EHZ. 2023-10-30T20:52:25.52 0.3 undecidable manual S 124 13.2756 131 0.09 75
IV.SEF1.HNE. 2023-10-30T20:52:24.85 0.3 undecidable manual S 113 9.7791 141 0.07 75
IV.FDMO.HHZ. 2023-10-30T20:52:24.23 0.1 undecidable manual P 128 25.8519 108 -0.12 96
IV.SSFR.HHZ. 2023-10-30T20:52:24.74 0.3 undecidable manual P 351 28.6491 106 -0.02 73
IV.ATCC.EHZ. 2023-10-30T20:52:23.17 3.0 negative manual P -0.19 0
IV.CESI.HHZ. 2023-10-30T20:52:23.50 0.1 undecidable manual P 164 20.2686 116 -0.05 98
IV.ASSB.HHZ. 2023-10-30T20:52:23.72 3.0 positive manual P 0.69 0
IV.MML1.EHZ. 2023-10-30T20:52:22.67 0.1 undecidable manual P 124 13.2756 131 0.03 100
IV.SNTG.HHZ. 2023-10-30T20:52:22.43 0.1 undecidable manual P 46 11.7771 135 -0.04 100
IV.SEF1.HNE. 2023-10-30T20:52:22.35 0.1 undecidable manual P 113 9.7791 141 0.09 100
IV.FOSV.EHZ. 2023-10-30T20:52:22.69 0.1 undecidable manual P 334 14.0748 129 -0.04 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SNTG.HHN. ML:1.1 0.00011645 0.46 AML other m 2023-10-30T20:52:25.44
IV.MML1.EHE. ML:1.3 0.0001795 0.4 AML other m 2023-10-30T20:52:25.89
IV.SNTG.HHE. ML:1.0 0.00008219999999999999 1.36 AML other m 2023-10-30T20:52:25.22
IV.MML1.EHN. ML:1.3 0.0001595 0.16 AML other m 2023-10-30T20:52:25.86
IV.ATCC.EHN. ML:1.3 0.000156 0.36 AML other m 2023-10-30T20:52:26.70
IV.ASSB.HHN. ML:1.5 0.000191 0.2 AML other m 2023-10-30T20:52:27.56
IV.ASSB.HHE. ML:1.4 0.00013700000000000002 1.06 AML other m 2023-10-30T20:52:27.55
IV.ATCC.EHE. ML:1.2 0.00012570000000000002 0.42 AML other m 2023-10-30T20:52:27.69
IV.SSFR.HHE. ML:1.2 0.00006805 0.7 AML other m 2023-10-30T20:52:29.82
IV.SSFR.HHN. ML:1.5 0.0001455 0.86 AML other m 2023-10-30T20:52:30.45
IV.MURB.HNN. ML:2.3 0.0010840000000000001 1.62 AML other m 2023-10-30T20:52:34.06
IV.MURB.HNE. ML:2.4 0.001323 1.04 AML other m 2023-10-30T20:52:34.35
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