Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 18-01-2022 and time 16:05:37 (UTC) in region 1 km SW Pietralunga (PG)

A magnitude ML 0.5 earthquake occured in region: 1 km SW Pietralunga (PG), on

  • 18-01-2022 16:05:37 (UTC)
  • 18-01-2022 17:05:37 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4380, 12.4330 at 7 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 1 2111 2111
Montone PG 12 1680 3791
Apecchio PU 14 1882 5673
Gubbio PG 15 32216 37889
Città di Castello PG 16 39913 77802
Cantiano PU 16 2245 80047
Umbertide PG 17 16681 96728
Piobbico PU 18 2029 98757
Scheggia e Pascelupo PG 19 1393 100150

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km N of Perugia (166134 inhabitants)
45 Km E of Arezzo (99543 inhabitants)
58 Km NW of Foligno (57155 inhabitants)
65 Km SW of Pesaro (94582 inhabitants)
65 Km SW of Fano (60888 inhabitants)
70 Km S of Rimini (147750 inhabitants)
79 Km S of Cesena (96758 inhabitants)
90 Km E of Siena (53903 inhabitants)
90 Km W of Ancona (100861 inhabitants)
93 Km SE of Forlì (117913 inhabitants)
99 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 0.5 2022-01-18
16:05:37		 43.438 12.4327 7 2022-01-18
16:23:16		 Sala Sismica INGV-Roma 99911401
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-18 16:05:37 ± 0.07
Latitude 43.4380 ± 0.0018
Longitude 12.4327 ± 0.0037
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 99911401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 327
Semi-minor axis of confidence ellipse (meter) 154
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 287
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) 141
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.07
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.12231
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.0
Num. used stations 2
Type of magnitude ML
Reference to an origin 99911401
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-18 16:23:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BDI.HHZ. 2022-01-18T16:05:55.74 3.0 negative manual P 0.31 0
IV.PE3.EHZ. 2022-01-18T16:05:49.62 3.0 undecidable manual S 0.94 0
IV.PIEI.HHZ. 2022-01-18T16:05:43.04 0.1 undecidable manual S 37 13.5753 116 0.05 98
IV.CSNT.HHZ. 2022-01-18T16:05:43.55 3.0 negative manual P 0.21 0
IV.TB02.DHE.01 2022-01-18T16:05:41.37 0.1 undecidable manual S 194 7.6812 131 0.1 98
IV.SFI.EHZ. 2022-01-18T16:05:41.08 3.0 undecidable manual P 0
IV.ATPC.HNE. 2022-01-18T16:05:40.66 0.1 undecidable manual S 22 5.0949 143 0.01 100
IV.PIEI.HHZ. 2022-01-18T16:05:40.71 0.1 undecidable manual P 37 13.5753 116 -0.05 98
IV.ATPI.EHZ. 2022-01-18T16:05:40.19 0.1 undecidable manual S 300 2.7972 157 -0.05 99
IV.TB01.DHE.01 2022-01-18T16:05:40.76 0.1 undecidable manual S 178 6.2937 137 -0.14 97
IV.ATVO.HHZ. 2022-01-18T16:05:40.98 0.1 undecidable manual S 199 6.5934 136 0.01 100
IV.TB03.DH1.01 2022-01-18T16:05:40.58 0.1 undecidable manual S 204 4.3956 146 0.07 99
IV.ATPI.EHZ. 2022-01-18T16:05:39.14 0.1 undecidable manual P 300 2.7972 157 -0.04 100
IV.TB01.DHE.01 2022-01-18T16:05:39.52 0.1 undecidable manual P 178 6.2937 137 -0.04 99
IV.ATVO.HHZ. 2022-01-18T16:05:39.63 0.1 undecidable manual P 199 6.5934 136 0.03 99
IV.TB03.DH1.01 2022-01-18T16:05:39.32 0.1 undecidable manual P 204 4.3956 146 -0.01 100
IV.ATPC.HNE. 2022-01-18T16:05:39.44 0.1 undecidable manual P 22 5.0949 143 0.03 100
IV.TB02.DHE.01 2022-01-18T16:05:39.77 0.1 undecidable manual P 194 7.6812 131 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PIEI.HHN. ML:0.5 0.0000351 0.2 AML other m 2022-01-18T16:05:43.47
IV.PIEI.HHE. ML:0.5 0.000039699999999999996 0.16 AML other m 2022-01-18T16:05:43.50
IV.ATVO.HHE. ML:0.0 0.0000848787 0.1152 AML other m 2022-01-18T16:05:41.29
IV.ATVO.HHN. ML:0.0 0.000045029100000000006 0.1408 AML other m 2022-01-18T16:05:41.35
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