Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 20-10-2022 and time 05:48:36 (UTC) in region 2 km NW Pietralunga (PG)

A magnitude ML 0.4 earthquake occured in region: 2 km NW Pietralunga (PG), on

  • 20-10-2022 05:48:36 (UTC)
  • 20-10-2022 07:48:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4620, 12.4240 at 10 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.

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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 11 1882 3993
Montone PG 13 1680 5673
Città di Castello PG 15 39913 45586
Piobbico PU 16 2029 47615
Cantiano PU 17 2245 49860
Gubbio PG 17 32216 82076
Umbertide PG 19 16681 98757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km N of Perugia (166134 inhabitants)
44 Km E of Arezzo (99543 inhabitants)
61 Km NW of Foligno (57155 inhabitants)
64 Km SW of Pesaro (94582 inhabitants)
64 Km SW of Fano (60888 inhabitants)
68 Km S of Rimini (147750 inhabitants)
76 Km S of Cesena (96758 inhabitants)
90 Km E of Siena (53903 inhabitants)
90 Km W of Ancona (100861 inhabitants)
90 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
Bulletin
Rev1000 		ML 0.4 2022-10-20
05:48:36		 43.4625 12.424 11 2024-03-01
15:27:59		 Bollettino Sismico Italiano INGV 111441591
Reviewed
Rev100 		ML 2.0 2022-10-20
05:48:36		 43.4677 12.4193 8 2022-10-20
06:13:03		 Sala Sismica INGV-Roma 110988591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-10-20 05:48:36 ± 0.13
Latitude 43.4625 ± 0.0054
Longitude 12.4240 ± 0.0062
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 111441591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 607
Semi-minor axis of confidence ellipse (meter) 394
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 334
Circular confidence region, given by single value of horizontal uncertainty (meter) 610.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.26170
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 1.6
Num. used stations 8
Type of magnitude ML
Reference to an origin 110988591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-10-20 06:13:03

ML:0.4

Field Value
Value 0.4
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 111441591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-11-03 10:34:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TREG.EHZ. 2022-10-20T05:49:16.94 3.0 negative manual Pg 7.87 0
IV.VVLD.HHZ. 2022-10-20T05:49:15.57 3.0 undecidable manual Sn -9.39 0
IV.ZCCA.HHZ. 2022-10-20T05:48:54.26 3.0 negative manual Pn -2.92 0
IV.SSFR.HHZ. 2022-10-20T05:48:46.21 0.3 undecidable manual S 96 29.0487 50 -0.24 69
IV.ATSC.EHZ. 2022-10-20T05:48:44.47 0.3 undecidable manual S 101 21.5673 116 0.02 73
IV.MGAB.HHZ. 2022-10-20T05:48:43.95 3.0 positive manual P -2 0
IV.NARO.HHZ. 2022-10-20T05:48:43.90 0.1 undecidable manual S 37 20.7681 117 -0.28 92
IV.BADI.EHZ. 2022-10-20T05:48:42.70 0.1 undecidable manual S 290 15.3735 124 0.11 96
IV.SSFR.HHZ. 2022-10-20T05:48:41.68 0.3 undecidable manual P 96 29.0487 50 -0.41 66
IV.ATBU.EHN. 2022-10-20T05:48:41.55 0.1 undecidable manual S 82 10.0788 136 0.37 92
IV.ATSC.EHZ. 2022-10-20T05:48:41.21 0.3 undecidable manual P 101 21.5673 116 0.28 69
IV.PIEI.HNE. 2022-10-20T05:48:41.60 0.3 undecidable manual S 48 12.0768 131 -0.08 73
IV.ATVO.HHZ. 2022-10-20T05:48:40.80 0.1 undecidable manual S 189 8.9799 139 -0.13 97
IV.BADI.EHZ. 2022-10-20T05:48:40.04 0.1 undecidable manual P 290 15.3735 124 0.19 95
IV.NARO.HHZ. 2022-10-20T05:48:40.67 0.6 undecidable manual P 37 20.7681 117 -0.11 48
IV.ATBU.EHN. 2022-10-20T05:48:39.38 0.1 undecidable manual P 82 10.0788 136 0.34 93
IV.ATPC.HNN. 2022-10-20T05:48:39.70 0.1 undecidable manual S 53 3.2967 162 -0.25 96
IV.PIEI.HNE. 2022-10-20T05:48:39.61 0.1 undecidable manual P 48 12.0768 131 0.28 94
IV.ATVO.HHZ. 2022-10-20T05:48:39.08 0.1 undecidable manual P 189 8.9799 139 0.18 96
IV.ATPI.HNZ. 2022-10-20T05:48:39.30 0.1 undecidable manual S 233 2.1978 168 -0.55 89
IV.ATPI.HNZ. 2022-10-20T05:48:38.23 0.1 undecidable manual P 233 2.1978 168 -0.04 100
IV.ATPC.HNN. 2022-10-20T05:48:38.45 0.1 undecidable manual P 53 3.2967 162 0.12 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHN. ML:0.5 0.000039730014999999995 0.16 AML other m 2022-10-20T05:48:40.97
IV.ATVO.HHE. ML:0.4 0.00003249734 0.1408 AML other m 2022-10-20T05:48:41.13
IV.BADI.EHN. ML:0.6 0.000038264825 0.1216 AML other m 2022-10-20T05:48:43.25
IV.BADI.EHE. ML:0.7 0.00004657658 0.1024 AML other m 2022-10-20T05:48:43.38
IV.ATVO.HNN. ML:0.6 0.00005260852 0.2304 AML other m 2022-10-20T05:48:40.96
IV.ATVO.HNE. ML:0.4 0.000031614975000000006 0.1408 AML other m 2022-10-20T05:48:40.90
IV.NARO.HHE. ML:0.2 0.000011038813499999999 0.0576 AML other m 2022-10-20T05:48:44.89
IV.NARO.HHN. ML:0.2 0.000011005352 0.0608 AML other m 2022-10-20T05:48:44.15
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
Waveforms Seismic signals in miniseed + resp format Download