Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 01-04-2023 and time 21:21:56 (Italy) in region 3 km NW Pietralunga (PG)

A magnitude ML 1.4 earthquake occured in region: 3 km NW Pietralunga (PG), on

  • 01-04-2023 19:21:56 (UTC)
  • 01-04-2023 21:21:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4700, 12.4210 at 7 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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
Apecchio PU 10 1882 3993
Montone PG 14 1680 5673
Città di Castello PG 15 39913 45586
Piobbico PU 15 2029 47615
Cantiano PU 17 2245 49860
Gubbio PG 18 32216 82076
Umbertide PG 20 16681 98757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km N of Perugia (166134 inhabitants)
43 Km E of Arezzo (99543 inhabitants)
62 Km NW of Foligno (57155 inhabitants)
63 Km SW of Pesaro (94582 inhabitants)
64 Km SW of Fano (60888 inhabitants)
67 Km S of Rimini (147750 inhabitants)
76 Km S of Cesena (96758 inhabitants)
89 Km SE of Forlì (117913 inhabitants)
90 Km E of Siena (53903 inhabitants)
90 Km W of Ancona (100861 inhabitants)
100 Km E of Firenze (382808 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
Bulletin
Rev1000 		ML 1.4 2023-04-01
19:21:56		 43.47 12.4207 7 2024-03-01
17:18:04		 Bollettino Sismico Italiano INGV 116610331
Reviewed
Rev100 		ML 1.4 2023-04-01
19:21:56		 43.4662 12.4198 7 2023-04-01
19:26:47		 Sala Sismica INGV-Roma 115955401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-01 19:21:56 ± 0.05
Latitude 43.4700 ± 0.0027
Longitude 12.4207 ± 0.0037
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116610331

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 320
Semi-minor axis of confidence ellipse (meter) 53
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 208
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.65021
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 23
Type of magnitude ML
Reference to an origin 116610331
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-22 12:37:15

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 24
Type of magnitude ML
Reference to an origin 115955401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-01 19:26:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2023-04-01T19:22:19.39 1.0 undecidable manual S 132 72.1722 50 -0.02 23
IV.CESI.HHZ. 2023-04-01T19:22:18.16 0.6 undecidable manual S 143 64.7907 50 0.74 38
IV.MML1.EHZ. 2023-04-01T19:22:16.60 0.6 undecidable manual S 131 59.496 50 0.58 41
IV.EL6.EHZ. 2023-04-01T19:22:15.80 0.6 undecidable manual S 106 57.0984 50 0.43 43
IV.MOMA.HHZ. 2023-04-01T19:22:12.33 3.0 undecidable manual Pg 0
IV.MGAB.HHZ. 2023-04-01T19:22:09.04 0.1 undecidable manual P 202 66.6777 50 0.03 91
IV.ATCC.EHZ. 2023-04-01T19:22:09.83 0.3 undecidable manual S 151 36.2415 101 0.19 70
IV.FDMO.HHZ. 2023-04-01T19:22:09.58 0.6 negative manual P 132 72.1722 50 -0.28 43
IV.CESI.HHZ. 2023-04-01T19:22:08.49 0.1 undecidable manual P 143 64.7907 50 -0.22 88
IV.MPAG.EHZ. 2023-04-01T19:22:08.52 0.3 undecidable manual S 57 32.4453 103 0.16 71
IV.FOSV.EHZ. 2023-04-01T19:22:08.94 0.3 undecidable manual S 125 33.6441 102 0.18 71
IV.EL6.EHZ. 2023-04-01T19:22:07.37 0.6 undecidable manual P 106 57.0984 50 -0.16 45
IV.MML1.EHZ. 2023-04-01T19:22:07.52 1.0 negative manual P 131 59.496 50 -0.38 22
IV.SSFR.HHZ. 2023-04-01T19:22:07.23 0.3 undecidable manual S 97 29.3484 104 -0.08 73
IV.FRON.EHZ. 2023-04-01T19:22:06.25 0.6 undecidable manual S 78 25.1526 106 0.36 46
IV.PARC.HHZ. 2023-04-01T19:22:06.40 0.6 undecidable manual S 324 24.6531 106 0.67 42
IV.SSP9.EHZ. 2023-04-01T19:22:06.39 0.3 undecidable manual S 296 25.9518 106 0.22 71
IV.MURB.HHZ. 2023-04-01T19:22:06.01 0.3 undecidable manual S 160 24.4533 106 0.34 69
IV.ASSB.HHZ. 2023-04-01T19:22:06.58 0.1 undecidable manual P 158 51.2154 50 -0.04 94
IV.CAFI.HHZ. 2023-04-01T19:22:04.46 0.1 undecidable manual P 247 39.8268 50 -0.41 89
IV.ATMI.HHZ. 2023-04-01T19:22:04.32 0.6 undecidable manual S 219 19.4694 110 0.3 47
IV.CRE.HHZ. 2023-04-01T19:22:04.96 0.1 undecidable manual P 294 41.1255 50 -0.12 94
IV.NARO.HHZ. 2023-04-01T19:22:04.52 0.3 undecidable manual S 39 20.2686 110 0.25 71
IV.ARVD.HHZ. 2023-04-01T19:22:04.80 0.1 undecidable manual P 86 42.0246 50 -0.41 88
IV.ATCC.EHZ. 2023-04-01T19:22:04.16 0.3 undecidable manual P 151 36.2415 101 -0.06 72
IV.FOSV.EHZ. 2023-04-01T19:22:03.32 0.1 undecidable manual P 125 33.6441 102 -0.39 90
IV.MPAG.EHZ. 2023-04-01T19:22:03.26 0.6 positive manual P 57 32.4453 103 -0.23 47
IV.ATFO.HHZ. 2023-04-01T19:22:03.21 0.3 undecidable manual S 133 16.6722 113 0.07 74
IV.SSP9.EHZ. 2023-04-01T19:22:02.32 0.1 undecidable manual P 296 25.9518 106 0.1 97
IV.MURB.HHZ. 2023-04-01T19:22:02.03 0.1 undecidable manual P 160 24.4533 106 0.1 97
IV.SSFR.HHZ. 2023-04-01T19:22:02.59 0.1 undecidable manual P 97 29.3484 104 -0.28 93
IV.PARC.HHZ. 2023-04-01T19:22:02.11 0.1 undecidable manual P 324 24.6531 106 0.15 96
IV.ATMI.HHZ. 2023-04-01T19:22:01.07 0.1 undecidable manual P 219 19.4694 110 0.09 98
IV.FRON.EHZ. 2023-04-01T19:22:01.91 0.1 undecidable manual P 78 25.1526 106 -0.15 96
IV.ATVO.HHZ. 2023-04-01T19:22:01.06 0.6 undecidable manual S 187 9.7791 126 0.01 51
IV.NARO.HHZ. 2023-04-01T19:22:01.13 0.1 undecidable manual P 39 20.2686 110 0.01 100
IV.ATFO.HHZ. 2023-04-01T19:22:00.44 0.1 undecidable manual P 133 16.6722 113 -0.03 100
IV.ATVO.HHZ. 2023-04-01T19:21:59.41 0.1 undecidable manual P 187 9.7791 126 0.14 99
IV.ATPI.EHZ. 2023-04-01T19:21:58.89 0.3 undecidable manual S 215 2.5974 160 -0.59 67
IV.ATPI.EHZ. 2023-04-01T19:21:58.18 0.1 undecidable manual P 215 2.5974 160 -0.18 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HNE. ML:1.6 0.0005885 0.78 AML other m 2023-04-01T19:22:01.69
IV.ATVO.HHE. ML:1.6 0.0006464999999999999 0.78 AML other m 2023-04-01T19:22:01.69
IV.ATVO.HNN. ML:1.5 0.0005335000000000001 0.38 AML other m 2023-04-01T19:22:01.51
IV.ATVO.HHN. ML:1.5 0.000484 0.4 AML other m 2023-04-01T19:22:01.71
IV.ATFO.HHE. ML:1.6 0.000374 0.62 AML other m 2023-04-01T19:22:03.91
IV.ATFO.HHN. ML:1.3 0.00019800000000000002 0.72 AML other m 2023-04-01T19:22:04.62
IV.NARO.HHN. ML:1.0 0.0000805 0.64 AML other m 2023-04-01T19:22:05.77
IV.NARO.HHE. ML:1.1 0.00010334999999999999 0.06 AML other m 2023-04-01T19:22:05.52
IV.MURB.HHE. ML:1.8 0.00043599999999999997 0.28 AML other m 2023-04-01T19:22:06.67
IV.FRON.EHN. ML:1.3 0.0001275 0.76 AML other m 2023-04-01T19:22:07.55
IV.SSFR.HHE. ML:1.6 0.00018449999999999999 0.3 AML other m 2023-04-01T19:22:08.17
IV.PARC.HHN. ML:1.1 0.00008405 0.68 AML other m 2023-04-01T19:22:08.53
IV.SSFR.HHN. ML:1.5 0.00016199999999999998 0.16 AML other m 2023-04-01T19:22:08.80
IV.PARC.HHE. ML:1.2 0.0001075 0.6 AML other m 2023-04-01T19:22:09.13
IV.FRON.EHE. ML:1.0 0.00006515 0.96 AML other m 2023-04-01T19:22:09.80
IV.MURB.HHN. ML:1.7 0.000286 0.92 AML other m 2023-04-01T19:22:09.18
IV.ATCC.EHE. ML:1.5 0.000136 1.02 AML other m 2023-04-01T19:22:10.10
IV.ATCC.EHN. ML:1.4 0.00008999999999999999 0.4 AML other m 2023-04-01T19:22:10.55
IV.ATMI.HHE. ML:1.4 0.00021550000000000003 1.58 AML other m 2023-04-01T19:22:12.81
IV.ATMI.HHN. ML:1.3 0.00014950000000000003 0.78 AML other m 2023-04-01T19:22:12.89
IV.FOSV.EHN. ML:1.1 0.00005395 1.24 AML other m 2023-04-01T19:22:13.09
IV.FOSV.EHE. ML:1.1 0.000048549999999999994 0.9 AML other m 2023-04-01T19:22:14.46
IV.SRES.HHE. ML:2.1 0.0000722 0.78 AML other m 2023-04-01T19:22:22.03
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