Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 07-12-2020 and time 14:07:12 (Italy) in region 4 km E Preci (PG)

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

  • 07-12-2020 13:07:12 (UTC)
  • 07-12-2020 14:07:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8660, 13.0880 at 10 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
Preci PG 4 724 724
Castelsantangelo sul Nera MC 6 281 1005
Visso MC 7 1107 2112
Norcia PG 8 4957 7069
Ussita MC 10 444 7513
Sellano PG 13 1079 8592
Cerreto di Spoleto PG 15 1075 9667
Monte Cavallo MC 16 145 9812
Cascia PG 17 3217 13029
Bolognola MC 18 142 13171
Fiordimonte MC 19 202 13373
Acquacanina MC 20 121 13494
Fiastra MC 20 559 14053
Arquata del Tronto AP 20 1178 15231

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
55 Km W of Teramo (54892 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
63 Km E of Perugia (166134 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
95 Km NE of Viterbo (67173 inhabitants)
95 Km W of Montesilvano (53738 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 1.4 2020-12-07
13:07:12		 42.866 13.0875 10 2021-02-26
14:56:17		 Bollettino Sismico Italiano INGV 86651401
Reviewed
Rev100 		ML 1.4 2020-12-07
13:07:12		 42.8667 13.0857 10 2020-12-07
13:14:00		 Sala Sismica INGV-Roma 85265941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-07 13:07:12 ± 0.12
Latitude 42.8660 ± 0.0054
Longitude 13.0875 ± 0.0061
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86651401

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 635
Semi-minor axis of confidence ellipse (meter) 381
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 220
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 167
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.24192
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 7
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 86651401
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-28 10:32:02

ML:1.4

Field Value
Value 1.4
Uncertainty 0.4
Num. used stations 8
Type of magnitude ML
Reference to an origin 85265941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-07 13:14:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MILN.HNZ. 2020-12-07T13:08:53.79 3.0 undecidable manual Sn -0.84 0
GU.GSCL.HHZ. 2020-12-07T13:08:38.24 3.0 undecidable manual Sg 17.290001 0
MN.BNI.HHZ. 2020-12-07T13:08:29.25 3.0 undecidable manual Pn 7.54 0
IV.EUCT.HNZ. 2020-12-07T13:08:21.45 3.0 undecidable manual Pg 20.51 0
IV.MFNL.HHZ. 2020-12-07T13:08:12.90 3.0 negative manual Pn 2.69 0
MN.PDG.HHZ. 2020-12-07T13:08:11.48 3.0 positive manual Pg 22.18 0
IV.GIB.HHZ. 2020-12-07T13:08:01.78 3.0 undecidable manual Pn -4.15 0
IV.VULT.HHZ. 2020-12-07T13:07:56.72 3.0 undecidable manual Sn 0.74 0
IV.PII.HHZ. 2020-12-07T13:07:56.07 3.0 positive manual Pg 15.4 0
IV.VIVA.HHZ. 2020-12-07T13:07:24.43 3.0 positive manual Pg 1.04 0
IV.CSP1.EHZ. 2020-12-07T13:07:22.29 0.3 undecidable manual S 21 26.8509 50 -0.16 70
IV.PTRJ.HNZ. 2020-12-07T13:07:20.92 3.0 undecidable manual P -0.66 0
IV.CESI.HHZ. 2020-12-07T13:07:20.96 0.3 undecidable manual S 316 21.3675 116 0.02 73
IV.FDMO.HHZ. 2020-12-07T13:07:19.83 0.3 undecidable manual S 360 18.9699 119 -0.35 68
IT.MTCL.HGZ. 2020-12-07T13:07:19.16 0.6 undecidable manual S 333 15.873 123 -0.11 48
IV.FEMA.HNE. 2020-12-07T13:07:18.10 0.6 undecidable manual S 344 11.0778 133 0.14 48
IV.CSP1.EHZ. 2020-12-07T13:07:18.33 0.3 undecidable manual P 21 26.8509 50 0.01 72
IV.FDMO.HHZ. 2020-12-07T13:07:17.02 0.1 undecidable manual P 360 18.9699 119 0.01 97
IV.CESI.HHZ. 2020-12-07T13:07:17.51 0.1 positive manual P 316 21.3675 116 0.06 96
IV.MC2.EHZ. 2020-12-07T13:07:17.78 0.3 undecidable manual S 59 9.6792 137 0.17 72
IT.MTCL.HGZ. 2020-12-07T13:07:16.55 0.1 undecidable manual P 333 15.873 123 0.06 97
IV.NRCA.HHZ. 2020-12-07T13:07:16.22 0.3 undecidable manual S 149 4.1958 158 -0.36 70
IV.FEMA.HNE. 2020-12-07T13:07:15.92 0.3 undecidable manual P 344 11.0778 133 0.19 71
IV.MC2.EHZ. 2020-12-07T13:07:15.71 0.1 negative manual P 59 9.6792 137 0.18 96
IV.NRCA.HHZ. 2020-12-07T13:07:14.93 0.1 negative manual P 149 4.1958 158 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.6 0.0006501859500000001 0.1408 AML other m 2020-12-07T13:07:16.37
IV.NRCA.HHN. ML:1.6 0.0006399301 0.1408 AML other m 2020-12-07T13:07:16.37
IV.NRCA.HNE. ML:1.7 0.00086625275 0.1408 AML other m 2020-12-07T13:07:16.34
IV.NRCA.HHE. ML:1.7 0.0009364695000000001 0.1408 AML other m 2020-12-07T13:07:16.34
IV.FDMO.HHE. ML:0.7 0.000034811125 0.1216 AML other m 2020-12-07T13:07:20.22
IV.CESI.HHN. ML:1.3 0.00014255194999999998 0.2368 AML other m 2020-12-07T13:07:21.16
IV.CESI.HHE. ML:1.2 0.00010318264499999999 0.1792 AML other m 2020-12-07T13:07:21.12
IV.FDMO.HHN. ML:0.7 0.000035702805 0.2816 AML other m 2020-12-07T13:07:21.81
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