Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 17-09-2020 and time 02:34:19 (Italy) in region 5 km N Pietralunga (PG)

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

  • 17-09-2020 00:34:19 (UTC)
  • 17-09-2020 02:34:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4860, 12.4280 at 9 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
Apecchio PU 8 1882 3993
Piobbico PU 13 2029 6022
Città di Castello PG 16 39913 45935
Montone PG 16 1680 47615
Cantiano PU 16 2245 49860
Cagli PU 19 8731 58591
Gubbio PG 19 32216 90807
Mercatello sul Metauro PU 19 1378 92185
Sant'Angelo in Vado PU 20 4133 96318

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km N of Perugia (166134 inhabitants)
44 Km E of Arezzo (99543 inhabitants)
61 Km SW of Pesaro (94582 inhabitants)
62 Km SW of Fano (60888 inhabitants)
63 Km NW of Foligno (57155 inhabitants)
65 Km S of Rimini (147750 inhabitants)
74 Km S of Cesena (96758 inhabitants)
88 Km SE of Forlì (117913 inhabitants)
89 Km W of Ancona (100861 inhabitants)
90 Km E of Siena (53903 inhabitants)
99 Km SE of Faenza (58541 inhabitants)
99 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
Reviewed
Rev100 		ML 0.9 2020-09-17
00:34:19		 43.4865 12.4277 9 2020-09-17
00:41:10		 Sala Sismica INGV-Roma 82963971
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-17 00:34:19 ± 0.05
Latitude 43.4865 ± 0.0018
Longitude 12.4277 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 82963971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 213
Semi-minor axis of confidence ellipse (meter) 118
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.07195
Epicentral distance of station farthest from the epicenter (degree) 0.37322
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 82963971
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-17 00:41:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATCC.EHZ. 2020-09-17T00:34:32.37 0.3 undecidable manual S 153 37.5291 50 0.22 68
IV.MURB.HHZ. 2020-09-17T00:34:28.57 0.1 undecidable manual S 162 25.9518 108 -0.06 96
IV.ATMI.HHZ. 2020-09-17T00:34:27.00 0.1 undecidable manual S 217 21.2676 112 -0.08 96
IV.FRON.EHZ. 2020-09-17T00:34:27.89 0.3 undecidable manual S 82 24.2535 110 -0.17 71
IV.ATCC.EHZ. 2020-09-17T00:34:26.60 0.1 undecidable manual P 153 37.5291 50 -0.05 94
IV.ARVD.HHZ. 2020-09-17T00:34:26.99 0.3 undecidable manual P 88 41.4252 50 -0.24 67
IV.ATFO.HHZ. 2020-09-17T00:34:26.00 0.1 undecidable manual S 139 17.6712 116 0.05 98
IV.BADI.EHZ. 2020-09-17T00:34:25.08 0.1 undecidable manual S 280 14.9739 120 -0.05 98
IV.MURB.HHZ. 2020-09-17T00:34:24.58 0.1 undecidable manual P 162 25.9518 108 -0.04 96
IV.ATVO.HHZ. 2020-09-17T00:34:24.14 0.1 undecidable manual S 188 11.6772 127 -0.04 99
IV.PE3.EHZ. 2020-09-17T00:34:24.35 0.1 undecidable manual P 13 23.8539 110 0.13 95
IV.FRON.EHZ. 2020-09-17T00:34:24.12 0.1 undecidable manual P 82 24.2535 110 -0.16 94
IV.PARC.HHZ. 2020-09-17T00:34:24.11 0.3 undecidable manual P 320 23.5542 110 -0.04 73
IV.APEC.HHZ. 2020-09-17T00:34:23.23 0.1 undecidable manual S 356 7.9809 137 0.01 100
IV.ATFO.HHZ. 2020-09-17T00:34:23.35 0.1 undecidable manual P 139 17.6712 116 0.28 93
IV.ATMI.HHZ. 2020-09-17T00:34:23.67 0.1 undecidable manual P 217 21.2676 112 -0.05 97
IV.ATVO.HHZ. 2020-09-17T00:34:22.13 0.1 undecidable manual P 188 11.6772 127 0.09 98
IV.BADI.EHZ. 2020-09-17T00:34:22.58 0.1 undecidable manual P 280 14.9739 120 -0.01 99
IV.APEC.HHZ. 2020-09-17T00:34:21.64 0.1 undecidable manual P 356 7.9809 137 0.15 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APEC.HHN. ML:1.2 0.0002445 0.12 AML other m 2020-09-17T00:34:23.55
IV.APEC.HHE. ML:1.4 0.00040849999999999995 0.16 AML other m 2020-09-17T00:34:23.54
IV.ATVO.HHE. ML:0.9 0.0000973 0.48 AML other m 2020-09-17T00:34:24.39
IV.ATVO.HHN. ML:1.1 0.00015150000000000002 0.26 AML other m 2020-09-17T00:34:24.81
IV.BADI.EHN. ML:1.0 0.00010899999999999999 0.28 AML other m 2020-09-17T00:34:25.20
IV.BADI.EHE. ML:1.0 0.000093 1.2 AML other m 2020-09-17T00:34:25.27
IV.ATMI.HHN. ML:0.8 0.0000441 0.84 AML other m 2020-09-17T00:34:27.60
IV.ATMI.HHE. ML:0.7 0.00003685 0.88 AML other m 2020-09-17T00:34:27.16
IV.FRON.EHE. ML:0.6 0.000023100000000000002 0.1 AML other m 2020-09-17T00:34:28.05
IV.PARC.HHE. ML:0.5 0.00001775 0.56 AML other m 2020-09-17T00:34:29.63
IV.MURB.HHN. ML:1.3 0.00011599999999999999 0.2 AML other m 2020-09-17T00:34:29.45
IV.MURB.HHE. ML:1.3 0.00011899999999999999 0.2 AML other m 2020-09-17T00:34:29.50
IV.FRON.EHN. ML:0.8 0.00003955 0.42 AML other m 2020-09-17T00:34:29.53
IV.PARC.HHN. ML:0.5 0.00001845 1.58 AML other m 2020-09-17T00:34:31.91
IV.ATCC.EHN. ML:0.7 0.000022 0.18 AML other m 2020-09-17T00:34:32.70
IV.ATCC.EHE. ML:0.9 0.00003065 0.32 AML other m 2020-09-17T00:34:32.76
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