Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 26-05-2023 and time 15:13:05 (UTC) in region 5 km SE Pietralunga (PG)

A magnitude ML 0.9 earthquake occured in region: 5 km SE Pietralunga (PG), on

  • 26-05-2023 15:13:05 (UTC)
  • 26-05-2023 17:13:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4170, 12.4920 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 5 2111 2111
Gubbio PG 10 32216 34327
Cantiano PU 13 2245 36572
Scheggia e Pascelupo PG 14 1393 37965
Montone PG 15 1680 39645
Apecchio PU 17 1882 41527
Umbertide PG 18 16681 58208
Costacciaro PG 19 1216 59424
Cagli PU 19 8731 68155
Piobbico PU 19 2029 70184

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Perugia (166134 inhabitants)
50 Km E of Arezzo (99543 inhabitants)
54 Km NW of Foligno (57155 inhabitants)
64 Km SW of Fano (60888 inhabitants)
65 Km SW of Pesaro (94582 inhabitants)
72 Km S of Rimini (147750 inhabitants)
83 Km S of Cesena (96758 inhabitants)
86 Km W of Ancona (100861 inhabitants)
94 Km E of Siena (53903 inhabitants)
96 Km N of Terni (111501 inhabitants)
97 Km SE of Forlì (117913 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 2023-05-26
15:13:05		 43.4172 12.4925 6 2023-05-26
15:21:13		 Sala Sismica INGV-Roma 117750681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-05-26 15:13:05 ± 0.16
Latitude 43.4172 ± 0.0027
Longitude 12.4925 ± 0.0050
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 117750681

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 330
Semi-minor axis of confidence ellipse (meter) 221
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 167
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 14
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.21134
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 117750681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-05-26 15:21:13
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2023-05-26T15:13:13.15 0.3 undecidable manual S 59 21.867 105 -0.05 73
IV.SSFR.HHZ. 2023-05-26T15:13:13.74 0.3 undecidable manual S 85 23.4543 104 0.01 73
IV.MURB.HHZ. 2023-05-26T15:13:12.14 0.3 undecidable manual S 171 17.2716 109 0.46 67
IV.SSFR.HHZ. 2023-05-26T15:13:10.05 0.3 undecidable manual P 85 23.4543 104 -0.14 71
IV.PIEI.HHZ. 2023-05-26T15:13:10.82 0.3 undecidable manual S 15 13.5753 113 0.34 69
IV.FRON.EHZ. 2023-05-26T15:13:09.69 0.1 undecidable manual P 59 21.867 105 -0.19 94
IV.ATFO.HHZ. 2023-05-26T15:13:08.81 0.3 undecidable manual S 131 8.4804 125 -0.12 73
IV.ATVO.HHZ. 2023-05-26T15:13:08.67 0.3 undecidable manual S 241 7.9809 126 -0.1 74
IV.PIEI.HHZ. 2023-05-26T15:13:08.48 0.3 undecidable manual P 15 13.5753 113 0.17 72
IV.MURB.HHZ. 2023-05-26T15:13:08.99 0.3 undecidable manual P 171 17.2716 109 -0.02 74
IV.ATPI.EHZ. 2023-05-26T15:13:08.78 0.1 undecidable manual S 297 8.1807 126 -0.06 99
IV.ATVO.HHZ. 2023-05-26T15:13:07.26 0.1 undecidable manual P 241 7.9809 126 -0.06 99
IV.ATPI.EHZ. 2023-05-26T15:13:07.35 0.1 undecidable manual P 297 8.1807 126 -0.01 100
IV.ATFO.HHZ. 2023-05-26T15:13:07.34 0.3 undecidable manual P 131 8.4804 125 -0.07 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHN. ML:0.9 0.00015099999999999998 1.84 AML other m 2023-05-26T15:13:09.01
IV.ATFO.HHE. ML:0.9 0.000135 0.4 AML other m 2023-05-26T15:13:09.48
IV.ATPI.EHE. ML:0.8 0.000122 0.42 AML other m 2023-05-26T15:13:09.32
IV.ATFO.HHN. ML:0.8 0.000132 0.8 AML other m 2023-05-26T15:13:10.45
IV.MURB.HHN. ML:0.8 0.00006365 0.82 AML other m 2023-05-26T15:13:13.66
IV.MURB.HHE. ML:0.8 0.0000577 0.22 AML other m 2023-05-26T15:13:13.56
IV.FRON.EHN. ML:0.9 0.0000565 0.28 AML other m 2023-05-26T15:13:13.71
IV.SSFR.HHN. ML:1.0 0.0000588 0.62 AML other m 2023-05-26T15:13:14.44
IV.SSFR.HHE. ML:1.2 0.0001037 0.24 AML other m 2023-05-26T15:13:14.19
IV.FRON.EHE. ML:0.5 0.000023399999999999996 0.98 AML other m 2023-05-26T15:13:14.71
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