Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 07-07-2023 and time 11:21:57 (Italy) in region 3 km E Pietralunga (PG)

A magnitude ML 1.2 earthquake occured in region: 3 km E Pietralunga (PG), on

  • 07-07-2023 09:21:57 (UTC)
  • 07-07-2023 11:21:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4380, 12.4750 at 8 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 3 2111 2111
Gubbio PG 13 32216 34327
Cantiano PU 13 2245 36572
Apecchio PU 14 1882 38454
Montone PG 14 1680 40134
Scheggia e Pascelupo PG 16 1393 41527
Piobbico PU 17 2029 43556
Cagli PU 19 8731 52287
Umbertide PG 19 16681 68968
Città di Castello PG 19 39913 108881

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km N of Perugia (166134 inhabitants)
48 Km E of Arezzo (99543 inhabitants)
57 Km NW of Foligno (57155 inhabitants)
63 Km SW of Fano (60888 inhabitants)
63 Km SW of Pesaro (94582 inhabitants)
70 Km S of Rimini (147750 inhabitants)
80 Km S of Cesena (96758 inhabitants)
87 Km W of Ancona (100861 inhabitants)
93 Km E of Siena (53903 inhabitants)
94 Km SE of Forlì (117913 inhabitants)
98 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 1.2 2023-07-07
09:21:57		 43.4378 12.4748 8 2023-07-07
09:43:39		 Sala Sismica INGV-Roma 119041471
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-07-07 09:21:57 ± 0.11
Latitude 43.4378 ± 0.0054
Longitude 12.4748 ± 0.0050
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 119041471

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 523
Semi-minor axis of confidence ellipse (meter) 254
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 17
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 126
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.41729
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 119041471
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-07-07 09:43:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSNT.HHZ. 2023-07-07T09:22:13.90 3.0 negative manual P -0.04 0
IV.ASSB.HHZ. 2023-07-07T09:22:12.89 0.6 undecidable manual S 161 46.3203 50 -0.08 46
IV.CAFI.HHZ. 2023-07-07T09:22:11.87 0.6 undecidable manual S 254 42.7239 50 -0.15 46
IV.ATCC.EHZ. 2023-07-07T09:22:08.95 0.6 undecidable manual S 155 31.0467 105 0.23 46
IV.ASSB.HHZ. 2023-07-07T09:22:06.17 1.0 negative manual P 161 46.3203 50 -0.28 22
IV.ATMI.HHZ. 2023-07-07T09:22:06.02 0.6 undecidable manual S 235 20.2686 112 0.85 39
IV.CAFI.HHZ. 2023-07-07T09:22:05.93 1.0 undecidable manual P 254 42.7239 50 0.02 24
IV.MURB.HHZ. 2023-07-07T09:22:05.63 0.6 undecidable manual S 168 19.7691 113 0.6 43
IV.ATCC.EHZ. 2023-07-07T09:22:04.08 0.3 negative manual P 155 31.0467 105 0.08 72
IV.TSM1.DHZ. 2023-07-07T09:22:03.30 0.6 undecidable manual S 136 14.2746 120 0 50
IV.MURB.HHZ. 2023-07-07T09:22:02.02 0.6 undecidable manual P 168 19.7691 113 0.15 48
IV.TSM3.DHZ. 2023-07-07T09:22:02.47 0.6 undecidable manual S 238 11.3775 126 0 50
IV.TSM6.DHZ. 2023-07-07T09:22:02.74 0.6 undecidable manual S 289 12.0768 125 0.08 49
IV.ATMI.HHZ. 2023-07-07T09:22:01.80 0.6 positive manual P 235 20.2686 112 -0.15 48
IV.ATBU.EHZ. 2023-07-07T09:22:01.69 0.6 undecidable manual S 55 7.2927 139 0.29 48
IV.TB02.DHZ. 2023-07-07T09:22:01.67 0.6 undecidable manual S 215 9.1797 132 -0.2 48
IV.TB03.DHZ. 2023-07-07T09:22:01.20 0.6 undecidable manual S 232 6.5934 142 -0.06 50
IV.TSM2.DHZ. 2023-07-07T09:22:00.16 0.6 undecidable manual S 165 4.7952 150 -0.75 41
IV.TSM6.DHZ. 2023-07-07T09:22:00.45 0.1 undecidable manual P 289 12.0768 125 -0.05 99
IV.ATBU.EHZ. 2023-07-07T09:22:00.04 0.1 undecidable manual P 55 7.2927 139 0.26 96
IV.TSM3.DHZ. 2023-07-07T09:22:00.37 0.1 undecidable manual P 238 11.3775 126 -0.02 100
IV.TB02.DHZ. 2023-07-07T09:22:00.14 0.1 undecidable manual P 215 9.1797 132 0.09 99
IV.TSM1.DHZ. 2023-07-07T09:22:00.61 0.1 undecidable manual P 136 14.2746 120 -0.26 95
IV.TB03.DHZ. 2023-07-07T09:21:59.59 0.1 undecidable manual P 232 6.5934 142 -0.11 99
IV.TSM2.DHZ. 2023-07-07T09:21:59.25 0.1 undecidable manual P 165 4.7952 150 -0.24 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MURB.HHN. ML:1.3 0.00017099999999999998 0.18 AML other m 2023-07-07T09:22:05.63
IV.MURB.HHE. ML:1.5 0.000245 1.64 AML other m 2023-07-07T09:22:06.90
IV.ATCC.EHN. ML:1.4 0.000115 0.3 AML other m 2023-07-07T09:22:09.24
IV.ATCC.EHE. ML:1.4 0.0001095 0.3 AML other m 2023-07-07T09:22:10.18
IV.ATMI.HHE. ML:1.1 0.00009790742 0.2624 AML other m 2023-07-07T09:22:08.53
IV.ATMI.HHN. ML:1.2 0.00011129269 0.384 AML other m 2023-07-07T09:22:08.53
IV.MURB.HNE. ML:1.5 0.00022813775 0.288 AML other m 2023-07-07T09:22:05.90
IV.MURB.HNN. ML:1.3 0.0001626677 0.2304 AML other m 2023-07-07T09:22:06.81
IV.CAFI.HHE. ML:0.8 0.000020672864999999997 0.2368 AML other m 2023-07-07T09:22:12.48
IV.CAFI.HHN. ML:0.7 0.000014017525 0.2368 AML other m 2023-07-07T09:22:12.89
IV.ASSB.HHE. ML:0.8 0.000020694885 0.1216 AML other m 2023-07-07T09:22:14.07
IV.ASSB.HHN. ML:1.0 0.00003075855 0.1024 AML other m 2023-07-07T09:22:14.08
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