Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 27-10-2020 and time 15:54:29 (Italy) in region 4 km N Preci (PG)

A magnitude ML 1.4 earthquake occured in region: 4 km N Preci (PG), on

  • 27-10-2020 14:54:29 (UTC)
  • 27-10-2020 15:54:29 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.9120, 13.0370 at 12 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
Preci PG 4 724 724
Visso MC 5 1107 1831
Ussita MC 9 444 2275
Sellano PG 9 1079 3354
Monte Cavallo MC 10 145 3499
Castelsantangelo sul Nera MC 10 281 3780
Norcia PG 14 4957 8737
Cerreto di Spoleto PG 14 1075 9812
Fiordimonte MC 15 202 10014
Pieve Torina MC 15 1458 11472
Fiastra MC 17 559 12031
Pievebovigliana MC 17 866 12897
Acquacanina MC 17 121 13018
Bolognola MC 18 142 13160
Muccia MC 19 915 14075
Serravalle di Chienti MC 19 1070 15145

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
57 Km E of Perugia (166134 inhabitants)
61 Km W of Teramo (54892 inhabitants)
69 Km NW of L'Aquila (69753 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 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 1.4 2020-10-27
14:54:29		 42.9117 13.037 12 2020-10-27
15:04:36		 Sala Sismica INGV-Roma 84182421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-27 14:54:29 ± 0.11
Latitude 42.9117 ± 0.0054
Longitude 13.0370 ± 0.0086
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84182421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 730
Semi-minor axis of confidence ellipse (meter) 37
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 57
Circular confidence region, given by single value of horizontal uncertainty (meter) 730.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 115
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.31836
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.4
Num. used stations 13
Type of magnitude ML
Reference to an origin 84182421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-27 15:04:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2020-10-27T14:54:41.73 0.3 undecidable manual S 76 35.3424 91 0.13 71
IV.TERO.HHZ. 2020-10-27T14:54:39.48 3.0 undecidable manual P -0.49 0
IV.PF6.EHZ. 2020-10-27T14:54:39.27 0.6 undecidable manual S 27 28.1496 92 -0.41 44
IV.CSP1.EHZ. 2020-10-27T14:54:38.53 0.6 undecidable manual S 34 24.1536 92 -0.09 48
IV.EL6.EHZ. 2020-10-27T14:54:38.43 3.0 negative manual P -0.27 0
IV.MMO1.EHZ. 2020-10-27T14:54:37.88 0.3 undecidable manual S 93 23.5542 92 -0.59 63
IV.MF5.EHZ. 2020-10-27T14:54:37.14 0.1 undecidable manual P 76 35.3424 91 0.56 85
IV.MML1.HNE. 2020-10-27T14:54:37.87 0.6 undecidable manual S 347 22.9548 93 -0.44 45
IV.CESI.HHZ. 2020-10-27T14:54:36.00 0.6 undecidable manual S 314 14.874 101 -0.16 48
IV.ASSB.HHZ. 2020-10-27T14:54:36.44 0.1 undecidable manual P 295 33.9438 91 0.08 94
IV.LNSS.HHN. 2020-10-27T14:54:36.23 0.1 undecidable manual P 180 34.2435 91 -0.18 93
IV.SMA1.EHZ. 2020-10-27T14:54:36.88 3.0 negative manual P -0.24 0
IV.CSP1.EHZ. 2020-10-27T14:54:35.01 0.1 positive manual P 34 24.1536 92 0.16 95
IV.PF6.EHZ. 2020-10-27T14:54:35.37 0.1 undecidable manual P 27 28.1496 92 -0.1 95
IV.FDMO.HHZ. 2020-10-27T14:54:35.68 0.6 undecidable manual S 16 14.4744 103 -0.36 46
IV.MC2.EHZ. 2020-10-27T14:54:35.73 0.6 undecidable manual S 90 12.3765 112 0.23 48
IV.FEMA.HNN. 2020-10-27T14:54:34.17 0.6 undecidable manual S 10 5.6943 145 0.05 50
IV.NRCA.HNZ. 2020-10-27T14:54:34.35 0.3 undecidable manual S 144 10.6782 120 -0.76 60
IV.MML1.HNE. 2020-10-27T14:54:34.54 0.1 undecidable manual P 347 22.9548 93 -0.14 96
IT.MTCL.HGZ. 2020-10-27T14:54:34.47 0.6 undecidable manual S 341 9.5793 125 -0.4 46
IV.MMO1.EHZ. 2020-10-27T14:54:34.75 0.1 undecidable manual P 93 23.5542 92 -0.02 98
IV.FDMO.HHZ. 2020-10-27T14:54:33.46 1.0 undecidable manual P 16 14.4744 103 0.1 25
IV.MC2.EHZ. 2020-10-27T14:54:33.57 0.1 undecidable manual P 90 12.3765 112 0.51 90
IV.CESI.HHZ. 2020-10-27T14:54:33.65 0.1 undecidable manual P 314 14.874 101 0.21 95
IV.FEMA.HNN. 2020-10-27T14:54:32.61 0.1 undecidable manual P 10 5.6943 145 0.35 95
IV.NRCA.HNZ. 2020-10-27T14:54:32.82 0.1 undecidable manual P 144 10.6782 120 -0.01 100
IT.MTCL.HGZ. 2020-10-27T14:54:32.84 0.1 undecidable manual P 341 9.5793 125 0.15 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.8 0.0007680976999999999 0.0832 AML other m 2020-10-27T14:54:34.50
IV.NRCA.HHN. ML:2.1 0.0015743405 0.1408 AML other m 2020-10-27T14:54:34.43
IV.NRCA.HNE. ML:1.7 0.0006461772 0.096 AML other m 2020-10-27T14:54:34.50
IV.NRCA.HNN. ML:2.1 0.0014734945 0.1408 AML other m 2020-10-27T14:54:34.44
IV.FDMO.HHE. ML:1.3 0.00019618050000000002 0.1216 AML other m 2020-10-27T14:54:36.04
IV.FDMO.HHN. ML:1.0 0.000090708735 0.1984 AML other m 2020-10-27T14:54:38.26
IV.CESI.HHE. ML:1.0 0.00009693626 0.2176 AML other m 2020-10-27T14:54:39.32
IV.CESI.HHN. ML:1.3 0.00017783175000000002 0.1984 AML other m 2020-10-27T14:54:39.10
IV.CSP1.EHE. ML:1.4 0.00015950995 0.1984 AML other m 2020-10-27T14:54:40.65
IV.CSP1.EHN. ML:1.5 0.0001986541 0.3968 AML other m 2020-10-27T14:54:41.24
IV.ASSB.HHE. ML:1.1 0.00005402379 0.1792 AML other m 2020-10-27T14:54:44.24
IV.ASSB.HHN. ML:1.0 0.00003827679 0.2048 AML other m 2020-10-27T14:54:44.28
IV.TERO.HHE. ML:1.1 0.000027731895 0.1024 AML other m 2020-10-27T14:54:46.48
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