Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 20-10-2019 and time 11:23:07 (Italy) in region 2 km SE Sigillo (PG)

A magnitude ML 1.0 earthquake occured in region: 2 km SE Sigillo (PG), on

  • 20-10-2019 09:23:07 (UTC)
  • 20-10-2019 11:23:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.3140, 12.7530 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
Fossato di Vico PG 2 2840 2840
Sigillo PG 2 2404 5244
Costacciaro PG 6 1216 6460
Gualdo Tadino PG 10 15208 21668
Scheggia e Pascelupo PG 12 1393 23061
Fabriano AN 13 31480 54541
Gubbio PG 15 32216 86757
Sassoferrato AN 16 7285 94042
Esanatoglia MC 17 2034 96076
Cerreto d'Esi AN 19 3817 99893
Genga AN 20 1797 101690
Serra Sant'Abbondio PU 20 1027 102717

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NE of Perugia (166134 inhabitants)
40 Km N of Foligno (57155 inhabitants)
63 Km SW of Fano (60888 inhabitants)
68 Km S of Pesaro (94582 inhabitants)
71 Km W of Ancona (100861 inhabitants)
72 Km E of Arezzo (99543 inhabitants)
84 Km N of Terni (111501 inhabitants)
85 Km S of Rimini (147750 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 1.0 2019-10-20
09:23:07		 43.3142 12.7527 9 2019-10-20
09:37:14		 Sala Sismica INGV-Roma 73353901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-10-20 09:23:07 ± 0.04
Latitude 43.3142 ± 0.0027
Longitude 12.7527 ± 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 73353901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 267
Semi-minor axis of confidence ellipse (meter) 264
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 323
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) 81
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.14929
Epicentral distance of station farthest from the epicenter (degree) 0.32196
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 73353901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-10-20 09:37:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2019-10-20T09:23:17.94 0.1 undecidable manual S 86 28.2495 108 0.07 98
IV.SNTG.HHZ. 2019-10-20T09:23:14.02 0.1 undecidable manual S 113 16.5723 120 -0.13 98
IV.MURB.HHZ. 2019-10-20T09:23:14.94 0.1 undecidable manual S 253 19.2696 116 -0.05 100
IV.NARO.HHZ. 2019-10-20T09:23:14.69 1.0 negative manual P 337 35.742 50 0 24
IV.ATCC.EHZ. 2019-10-20T09:23:14.23 0.1 undecidable manual S 213 16.9719 119 -0.05 100
IV.PIEI.HHZ. 2019-10-20T09:23:13.78 0.6 negative manual P 325 30.1476 50 -0.06 49
IV.EL6.EHZ. 2019-10-20T09:23:13.51 0.6 positive manual P 86 28.2495 108 0 49
IV.ASSB.HHZ. 2019-10-20T09:23:13.68 1.0 positive manual P 194 31.0467 50 -0.29 23
IV.ARVD.HHZ. 2019-10-20T09:23:13.11 0.3 negative manual P 37 25.4523 110 0.12 73
IV.FRON.EHZ. 2019-10-20T09:23:12.33 0.1 undecidable manual P 355 22.6551 112 -0.14 97
IV.MURB.HHZ. 2019-10-20T09:23:12.05 0.3 positive manual P 253 19.2696 116 0.21 72
IV.ATCC.EHZ. 2019-10-20T09:23:11.49 0.1 positive manual P 213 16.9719 119 0.05 100
IV.SNTG.HHZ. 2019-10-20T09:23:11.55 0.3 undecidable manual P 113 16.5723 120 0.19 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SNTG.HHN. ML:1.1 0.00011779999999999999 0.26 AML other m 2019-10-20T09:23:14.27
IV.SNTG.HHE. ML:0.9 0.00006470000000000001 0.64 AML other m 2019-10-20T09:23:14.55
IV.ATCC.EHN. ML:1.1 0.00012085 0.62 AML other m 2019-10-20T09:23:14.58
IV.ATCC.EHE. ML:1.4 0.00021 0.44 AML other m 2019-10-20T09:23:14.54
IV.MURB.HHN. ML:1.7 0.00036199999999999996 0.26 AML other m 2019-10-20T09:23:15.52
IV.MURB.HHE. ML:1.5 0.000244 0.28 AML other m 2019-10-20T09:23:15.79
IV.FRON.EHE. ML:0.9 0.0000516 0.5 AML other m 2019-10-20T09:23:16.05
IV.FRON.EHN. ML:0.9 0.0000482 0.48 AML other m 2019-10-20T09:23:18.24
IV.ASSB.HHN. ML:0.9 0.000037749999999999996 0.18 AML other m 2019-10-20T09:23:18.35
IV.ASSB.HHE. ML:1.0 0.00004785 0.48 AML other m 2019-10-20T09:23:18.50
IV.PIEI.HHE. ML:0.8 0.00003175 1.24 AML other m 2019-10-20T09:23:19.95
IV.PIEI.HHN. ML:0.6 0.000020749999999999996 1.08 AML other m 2019-10-20T09:23:20.11
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