Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 29-04-2023 and time 07:50:19 (UTC) in region 1 km E Pietralunga (PG)

A magnitude ML 0.5 earthquake occured in region: 1 km E Pietralunga (PG), on

  • 29-04-2023 07:50:19 (UTC)
  • 29-04-2023 09:50:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4450, 12.4560 at 6 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
Pietralunga PG 2 2111 2111
Apecchio PU 13 1882 3993
Montone PG 14 1680 5673
Gubbio PG 14 32216 37889
Cantiano PU 14 2245 40134
Piobbico PU 17 2029 42163
Città di Castello PG 18 39913 82076
Scheggia e Pascelupo PG 18 1393 83469
Umbertide PG 18 16681 100150
Cagli PU 19 8731 108881

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km N of Perugia (166134 inhabitants)
46 Km E of Arezzo (99543 inhabitants)
58 Km NW of Foligno (57155 inhabitants)
64 Km SW of Pesaro (94582 inhabitants)
64 Km SW of Fano (60888 inhabitants)
69 Km S of Rimini (147750 inhabitants)
79 Km S of Cesena (96758 inhabitants)
88 Km W of Ancona (100861 inhabitants)
92 Km E of Siena (53903 inhabitants)
93 Km SE of Forlì (117913 inhabitants)
99 Km N of Terni (111501 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 0.5 2023-04-29
07:50:19		 43.4447 12.4558 6 2023-04-29
08:06:36		 Sala Sismica INGV-Roma 116865961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-29 07:50:19 ± 0.06
Latitude 43.4447 ± 0.0018
Longitude 12.4558 ± 0.0037
Depth (km) 6 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 116865961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 235
Semi-minor axis of confidence ellipse (meter) 142
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 135
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.03597
Epicentral distance of station farthest from the epicenter (degree) 0.23742
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 116865961
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-29 08:06:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSFR.HHZ. 2023-04-29T07:50:24.83 0.3 undecidable manual P 92 26.3514 103 -0.08 95
IV.BADI.EHZ. 2023-04-29T07:50:23.41 0.3 undecidable manual P 293 18.4704 108 0.01 98
IV.FRON.EHZ. 2023-04-29T07:50:23.98 0.3 undecidable manual P 69 23.1546 104 -0.32 91
IV.MURB.HHZ. 2023-04-29T07:50:23.93 0.3 undecidable manual P 165 20.868 106 0.07 97
IV.ATSC.EHZ. 2023-04-29T07:50:23.39 0.3 undecidable manual P 97 18.7701 108 -0.05 97
IV.NARO.HHZ. 2023-04-29T07:50:23.50 0.3 undecidable manual P 29 20.9679 106 -0.38 90
IV.TSM3.DHZ.01 2023-04-29T07:50:22.04 0.3 undecidable manual P 230 10.5783 119 0.1 98
IV.PIEI.HHZ. 2023-04-29T07:50:22.32 0.3 undecidable manual P 32 11.9769 116 0.14 97
IV.TSM2.DHZ.01 2023-04-29T07:50:22.33 0.3 undecidable manual S 153 5.994 135 -0.11 98
IV.TSM5.DHZ.01 2023-04-29T07:50:22.52 0.3 undecidable manual P 72 12.4764 116 0.25 94
IV.TB03.DHZ.25 2023-04-29T07:50:22.26 0.3 undecidable manual S 217 5.994 135 -0.19 97
IV.ATVO.HHZ. 2023-04-29T07:50:22.95 0.3 undecidable manual S 210 7.9809 127 -0.01 100
IV.ATLO.EHZ. 2023-04-29T07:50:22.74 0.3 undecidable manual P 195 14.874 112 0.02 98
IV.TSM1.DHZ.01 2023-04-29T07:50:22.95 0.3 undecidable manual P 134 15.873 111 0.05 98
IV.ATFO.HHZ. 2023-04-29T07:50:22.35 0.3 undecidable manual P 133 12.6762 115 0.03 99
IV.ATPC.HNZ. 2023-04-29T07:50:22.11 0.3 undecidable manual S 1 3.996 146 0.12 98
IV.TB01.DHZ.01 2023-04-29T07:50:22.79 0.3 undecidable manual S 193 7.1928 130 0.05 99
IV.ATPC.HNZ. 2023-04-29T07:50:21.02 0.3 undecidable manual P 1 3.996 146 0.08 99
IV.ATPI.EHZ. 2023-04-29T07:50:21.98 0.3 undecidable manual S 279 4.3956 144 -0.09 99
IV.TB02.DHZ.01 2023-04-29T07:50:21.77 0.3 undecidable manual P 204 9.0798 123 0.1 98
IV.TB01.DHZ.01 2023-04-29T07:50:21.43 0.3 undecidable manual P 193 7.1928 130 0.06 99
IV.TSM2.DHZ.01 2023-04-29T07:50:21.12 0.3 undecidable manual P 153 5.994 135 -0.08 99
IV.ATBU.EHZ. 2023-04-29T07:50:21.79 0.3 undecidable manual P 65 8.1807 126 0.25 95
IV.ATVO.HHZ. 2023-04-29T07:50:21.54 0.3 undecidable manual P 210 7.9809 127 0.04 99
IV.TB03.DHZ.25 2023-04-29T07:50:21.17 0.3 undecidable manual P 217 5.994 135 -0.03 100
IV.TSM6.DHZ.11 2023-04-29T07:50:21.89 0.3 undecidable manual P 287 10.3785 120 -0.01 99
IV.ATPI.EHZ. 2023-04-29T07:50:20.95 0.3 undecidable manual P 279 4.3956 144 -0.04 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PIEI.HHN. ML:0.0 0.00005235 0.28 AML other m 2023-04-29T07:50:24.85
IV.PIEI.HHE. ML:0.0 0.00006185 0.36 AML other m 2023-04-29T07:50:25.14
IV.ATPI.EHE. ML:0.0 0.000057518655 0.256 AML other m 2023-04-29T07:50:22.92
IV.ATPI.EHN. ML:0.0 0.00010821309500000002 0.2816 AML other m 2023-04-29T07:50:22.06
IV.ATVO.HHE. ML:0.5 0.00005809332 0.1792 AML other m 2023-04-29T07:50:23.32
IV.ATVO.HHN. ML:0.4 0.000045101145 0.1216 AML other m 2023-04-29T07:50:23.38
IV.ATFO.HHE. ML:0.3 0.000022721724999999998 0.16 AML other m 2023-04-29T07:50:25.13
IV.ATFO.HHN. ML:0.2 0.00001893188 0.2048 AML other m 2023-04-29T07:50:25.35
IV.BADI.EHE. ML:0.5 0.000025965540000000003 0.1216 AML other m 2023-04-29T07:50:26.90
IV.BADI.EHN. ML:0.5 0.00002902793 0.1984 AML other m 2023-04-29T07:50:27.03
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