Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 27-01-2023 and time 17:04:52 (Italy) in region 4 km SE Pietralunga (PG)

A magnitude ML 0.9 earthquake occured in region: 4 km SE Pietralunga (PG), on

  • 27-01-2023 16:04:52 (UTC)
  • 27-01-2023 17:04:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4120, 12.4720 at 3 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 4 2111 2111
Gubbio PG 11 32216 34327
Montone PG 13 1680 36007
Cantiano PU 14 2245 38252
Scheggia e Pascelupo PG 16 1393 39645
Umbertide PG 16 16681 56326
Apecchio PU 17 1882 58208
Città di Castello PG 20 39913 98121
Piobbico PU 20 2029 100150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km N of Perugia (166134 inhabitants)
48 Km E of Arezzo (99543 inhabitants)
54 Km NW of Foligno (57155 inhabitants)
65 Km SW of Fano (60888 inhabitants)
66 Km SW of Pesaro (94582 inhabitants)
73 Km S of Rimini (147750 inhabitants)
83 Km S of Cesena (96758 inhabitants)
88 Km W of Ancona (100861 inhabitants)
93 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
Bulletin
Rev1000 		ML 0.9 2023-01-27
16:04:52		 43.4117 12.4718 3 2024-03-01
17:18:04		 Bollettino Sismico Italiano INGV 116541861
Reviewed
Rev100 		ML 0.9 2023-01-27
16:04:52		 43.4112 12.4713 3 2023-01-27
16:58:49		 Sala Sismica INGV-Roma 113834631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-01-27 16:04:52 ± 0.09
Latitude 43.4117 ± 0.0027
Longitude 12.4718 ± 0.0037
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116541861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 270
Semi-minor axis of confidence ellipse (meter) 99
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 114
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 44
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.01979
Epicentral distance of station farthest from the epicenter (degree) 0.29138
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 116541861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-20 08:10:00

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 113834631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-01-27 16:58:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BADI.EHZ. 2023-01-27T16:05:00.60 0.3 undecidable manual S 301 21.2676 99 0.21 71
IV.PARC.HHE. 2023-01-27T16:04:59.11 0.6 undecidable manual P 325 32.3454 96 -0.31 45
IV.MURB.HHZ. 2023-01-27T16:04:59.43 0.6 undecidable manual S 166 17.0718 101 0.5 45
IV.PIEI.HHZ. 2023-01-27T16:04:58.61 0.3 undecidable manual S 20 14.6742 103 0.48 67
IV.FRON.EHZ. 2023-01-27T16:04:57.31 0.3 undecidable manual P 60 23.5542 98 -0.38 68
IV.ATLO.EHE. 2023-01-27T16:04:57.29 0.3 undecidable manual S 206 11.877 105 0.09 73
IV.BADI.EHZ. 2023-01-27T16:04:57.17 0.3 undecidable manual P 301 21.2676 99 -0.06 73
IV.MURB.HHZ. 2023-01-27T16:04:56.51 0.6 undecidable manual P 166 17.0718 101 0.12 48
IV.ATFO.HHZ. 2023-01-27T16:04:56.67 0.3 undecidable manual S 122 9.4794 109 0.28 71
IV.ATPC.HHE. 2023-01-27T16:04:56.22 0.3 undecidable manual S 351 7.7811 113 0.38 70
IV.TSM3.DHE.01 2023-01-27T16:04:56.78 0.3 undecidable manual S 251 9.879 108 0.25 71
IV.ATSC.EHE. 2023-01-27T16:04:56.31 0.3 undecidable manual P 85 17.3715 101 -0.14 72
IV.PIEI.HHZ. 2023-01-27T16:04:55.89 0.3 undecidable manual P 20 14.6742 103 -0.04 74
IV.TB02.DHZ.01 2023-01-27T16:04:55.74 0.3 undecidable manual S 228 6.7932 116 0.2 72
IV.ATVO.HHZ. 2023-01-27T16:04:55.37 0.3 undecidable manual S 238 6.1938 118 0.02 75
IV.TB03.DHZ.01 2023-01-27T16:04:55.00 0.6 undecidable manual S 257 5.0949 123 -0.02 50
IV.ATLO.EHE. 2023-01-27T16:04:55.29 0.3 undecidable manual P 206 11.877 105 -0.1 73
IV.ATPI.EHE. 2023-01-27T16:04:55.41 0.3 undecidable manual S 308 7.0929 115 -0.22 72
IV.ATPC.HHE. 2023-01-27T16:04:54.63 0.3 undecidable manual P 351 7.7811 113 0.03 75
IV.TSM3.DHE.01 2023-01-27T16:04:54.93 0.3 undecidable manual P 251 9.879 108 -0.07 74
IV.ATPI.EHE. 2023-01-27T16:04:54.34 0.3 undecidable manual P 308 7.0929 115 -0.14 73
IV.TSM2.DHN. 2023-01-27T16:04:54.02 0.6 undecidable manual S 139 2.1978 146 -0.27 48
IV.TB01.DHZ.01 2023-01-27T16:04:54.90 0.3 undecidable manual S 221 4.3956 127 0.07 75
IV.TB02.DHZ.01 2023-01-27T16:04:54.32 0.3 undecidable manual P 228 6.7932 116 -0.11 74
IV.ATVO.HHZ. 2023-01-27T16:04:54.20 0.1 negative manual P 238 6.1938 118 -0.12 98
IV.ATFO.HHZ. 2023-01-27T16:04:54.98 1.0 undecidable manual P 122 9.4794 109 0.06 25
IV.TB03.DHZ.01 2023-01-27T16:04:53.99 0.1 undecidable manual P 257 5.0949 123 -0.14 98
IV.TSM2.DHN. 2023-01-27T16:04:53.47 0.1 undecidable manual P 139 2.1978 146 -0.24 96
IV.TB01.DHZ.01 2023-01-27T16:04:53.97 0.1 undecidable manual P 221 4.3956 127 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATFO.HHE. ML:0.7 0.00009800000000000001 1.22 AML other m 2023-01-27T16:04:56.91
IV.ATFO.HHN. ML:0.7 0.00009920000000000001 1.28 AML other m 2023-01-27T16:04:57.91
IV.ATVO.HHN. ML:0.0 0.000103414605 0.192 AML other m 2023-01-27T16:04:55.80
IV.ATVO.HHE. ML:0.0 0.00013883015 0.1152 AML other m 2023-01-27T16:04:55.71
IV.PIEI.HHE. ML:0.7 0.000057674790000000005 0.1792 AML other m 2023-01-27T16:04:59.51
IV.PIEI.HHN. ML:0.5 0.00004174777 0.128 AML other m 2023-01-27T16:04:59.55
IV.MURB.HHE. ML:1.3 0.00017865415 0.256 AML other m 2023-01-27T16:04:59.96
IV.MURB.HHN. ML:1.1 0.00012616325 0.2048 AML other m 2023-01-27T16:05:00.12
IV.BADI.EHE. ML:1.0 0.00008389220999999999 2.9824 AML other m 2023-01-27T16:05:02.21
IV.BADI.EHN. ML:1.0 0.00008258439000000001 1.6768 AML other m 2023-01-27T16:05:01.57
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