Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 20-12-2019 and time 15:09:12 (UTC) in region 3 km S Preci (PG)

A magnitude ML 1.0 earthquake occured in region: 3 km S Preci (PG), on

  • 20-12-2019 15:09:12 (UTC)
  • 20-12-2019 16:09:12 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8500, 13.0350 at 11 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 3 724 724
Norcia PG 8 4957 5681
Sellano PG 10 1079 6760
Visso MC 10 1107 7867
Cerreto di Spoleto PG 10 1075 8942
Castelsantangelo sul Nera MC 11 281 9223
Ussita MC 14 444 9667
Cascia PG 15 3217 12884
Monte Cavallo MC 16 145 13029
Vallo di Nera PG 17 364 13393
Poggiodomo PG 17 117 13510

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km E of Foligno (57155 inhabitants)
45 Km NE of Terni (111501 inhabitants)
59 Km W of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
90 Km NE of Viterbo (67173 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
98 Km N of Guidonia Montecelio (88673 inhabitants)
99 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 1.0 2019-12-20
15:09:12		 42.8503 13.0352 11 2020-02-28
16:42:25		 Bollettino Sismico Italiano INGV 76480621
Reviewed
Rev100 		ML 1.0 2019-12-20
15:09:11		 42.8497 13.0235 11 2019-12-20
19:53:06		 Sala Sismica INGV-Roma 74826611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-20 15:09:12 ± 0.04
Latitude 42.8503 ± 0.0018
Longitude 13.0352 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76480621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 352
Semi-minor axis of confidence ellipse (meter) 219
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 99
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
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 34
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.27160
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 76480621
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-13 09:44:09

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 74826611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-20 19:53:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ILLI.HHZ. 2019-12-20T15:10:20.38 3.0 positive manual Pg 20.610001 0
IV.CORL.HHZ. 2019-12-20T15:10:01.08 3.0 undecidable manual Pn -0.37 0
IV.SCHR.EHZ. 2019-12-20T15:09:54.69 3.0 negative manual Pg 8.36 0
OX.CIMO.HHZ. 2019-12-20T15:09:30.29 3.0 negative manual Pg 7.3 0
IV.MCRV.HHZ. 2019-12-20T15:09:29.44 3.0 undecidable manual Pn -4.55 0
IV.NDIM.HNZ. 2019-12-20T15:09:28.02 3.0 undecidable manual Sg 2.47 0
IV.CSP1.EHZ. 2019-12-20T15:09:22.65 0.6 undecidable manual S 27 30.1476 90 0.11 47
IV.LNSS.HHN. 2019-12-20T15:09:21.89 0.6 undecidable manual S 179 27.4503 90 0.06 48
IV.GAVE.HNZ. 2019-12-20T15:09:20.13 0.6 undecidable manual S 213 20.9679 91 0.03 48
IV.MMO1.EHZ. 2019-12-20T15:09:20.82 0.6 undecidable manual S 77 24.3534 90 -0.17 47
IV.SACR.HHZ. 2019-12-20T15:09:19.74 3.0 undecidable manual Pn -4.84 0
IV.CESI.HHE. 2019-12-20T15:09:19.91 0.6 undecidable manual S 328 20.1687 91 0.03 48
IV.FDMO.HHZ. 2019-12-20T15:09:19.96 0.6 undecidable manual S 12 21.0678 91 -0.17 48
IV.CSP1.EHZ. 2019-12-20T15:09:18.12 0.1 undecidable manual P 27 30.1476 90 0.02 96
IV.MC2.EHZ. 2019-12-20T15:09:18.38 0.6 undecidable manual S 61 14.1747 95 0.08 49
IV.MMO1.EHZ. 2019-12-20T15:09:17.17 0.1 undecidable manual P 77 24.3534 90 -0.04 97
IV.FEMA.HNN. 2019-12-20T15:09:17.84 0.6 undecidable manual S 5 12.4764 106 0.01 49
IV.LNSS.HHN. 2019-12-20T15:09:17.61 0.3 undecidable manual P 179 27.4503 90 -0.08 73
IV.EUCT.HNZ. 2019-12-20T15:09:17.05 3.0 negative manual Pn -1.56 0
IV.MILN.HNZ. 2019-12-20T15:09:16.98 3.0 undecidable manual Pn -3.62 0
IV.GAVE.HNZ. 2019-12-20T15:09:16.74 0.3 undecidable manual P 213 20.9679 91 0.05 72
IV.CESI.HHE. 2019-12-20T15:09:16.24 0.3 undecidable manual P 328 20.1687 91 -0.33 71
IV.NRCA.HHZ. 2019-12-20T15:09:16.30 0.6 undecidable manual S 106 6.6933 138 -0.25 48
IV.FDMO.HHZ. 2019-12-20T15:09:16.83 0.1 undecidable manual P 12 21.0678 91 0.12 96
IV.MC2.EHZ. 2019-12-20T15:09:15.78 0.1 undecidable manual P 61 14.1747 95 0.13 97
IV.FEMA.HNN. 2019-12-20T15:09:15.44 0.3 undecidable manual P 5 12.4764 106 0.05 73
IV.NRCA.HHZ. 2019-12-20T15:09:14.67 0.1 undecidable manual P 106 6.6933 138 0.02 100
IV.MAON.HHZ. 2019-12-20T15:09:13.35 3.0 undecidable manual S -2.09 0
IV.BOZZ.HNZ. 2019-12-20T15:09:10.03 3.0 positive manual Pn 0.8 0
IV.MAON.HHZ. 2019-12-20T15:09:00.57 3.0 undecidable manual P 1.55 0
TV.SF01.EHZ. 2019-12-20T15:08:53.54 3.0 negative manual P 1.99 0
TV.SF04.EHZ. 2019-12-20T15:08:52.05 3.0 undecidable manual P 1.16 0
IV.RIBO.EHZ.01 2019-12-20T15:08:50.16 3.0 positive manual P -2.64 0
IV.APEC.HHZ. 2019-12-20T15:08:47.93 3.0 negative manual P -0.15 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.00022669735000000003 0.1152 AML other m 2019-12-20T15:09:16.33
IV.NRCA.HNE. ML:1.2 0.0002423411 0.8992 AML other m 2019-12-20T15:09:16.86
IV.FDMO.HHE. ML:0.9 0.00004949087 0.1664 AML other m 2019-12-20T15:09:20.21
IV.CSP1.EHE. ML:1.2 0.00008061128999999998 0.6592 AML other m 2019-12-20T15:09:20.56
IV.FDMO.HHN. ML:0.6 0.000025733565 0.1536 AML other m 2019-12-20T15:09:20.70
IV.CSP1.EHN. ML:0.8 0.00002890688 0.1536 AML other m 2019-12-20T15:09:23.88
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