Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 05-12-2021 and time 03:06:40 (Italy) in region 3 km NE Preci (PG)

A magnitude ML 0.9 earthquake occured in region: 3 km NE Preci (PG), on

  • 05-12-2021 02:06:40 (UTC)
  • 05-12-2021 03:06:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8960, 13.0620 at 10 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 3 724 724
Visso MC 5 1107 1831
Castelsantangelo sul Nera MC 8 281 2112
Ussita MC 8 444 2556
Sellano PG 11 1079 3635
Norcia PG 12 4957 8592
Monte Cavallo MC 12 145 8737
Cerreto di Spoleto PG 15 1075 9812
Fiordimonte MC 16 202 10014
Pieve Torina MC 17 1458 11472
Bolognola MC 17 142 11614
Fiastra MC 18 559 12173
Acquacanina MC 18 121 12294
Pievebovigliana MC 19 866 13160
Cascia PG 20 3217 16377

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
59 Km W of Teramo (54892 inhabitants)
60 Km E of Perugia (166134 inhabitants)
66 Km NW of L'Aquila (69753 inhabitants)
88 Km SW of Ancona (100861 inhabitants)
95 Km NE of Viterbo (67173 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
Reviewed
Rev100 		ML 0.9 2021-12-05
02:06:40		 42.8957 13.0623 10 2021-12-05
02:18:59		 Sala Sismica INGV-Roma 98155901
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-05 02:06:40 ± 0.06
Latitude 42.8957 ± 0.0027
Longitude 13.0623 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 98155901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 352
Semi-minor axis of confidence ellipse (meter) 226
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
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) 130
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 15
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30487
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.4
Num. used stations 10
Type of magnitude ML
Reference to an origin 98155901
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-05 02:18:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IVGP.HHZ. 2021-12-05T02:08:20.83 3.0 undecidable manual Sn -2.14 0
IV.PTRP.HHZ. 2021-12-05T02:08:00.99 3.0 undecidable manual Sg 4.47 0
IX.SFL3.HNZ.01 2021-12-05T02:07:51.57 3.0 undecidable manual Sg 6.12 0
OX.PLRO.HHZ. 2021-12-05T02:07:43.94 3.0 negative manual Pg 8.98 0
IV.STAL.HHZ. 2021-12-05T02:07:42.96 3.0 undecidable manual Pg 12.23 0
IV.MABI.HHZ. 2021-12-05T02:07:28.05 3.0 negative manual Pn -3.54 0
IV.ORZI.HHZ. 2021-12-05T02:07:27.67 3.0 negative manual Pn 1.58 0
IV.MOCO.HHZ. 2021-12-05T02:07:27.09 3.0 undecidable manual Sn -4.83 0
IV.MCEL.HHZ. 2021-12-05T02:07:21.06 3.0 undecidable manual Pg 4.42 0
IV.APRC.HHZ. 2021-12-05T02:07:06.60 3.0 negative manual Pg 0.92 0
IV.PAOL.HHZ. 2021-12-05T02:07:03.40 3.0 negative manual Pg 2.88 0
IV.MF5.EHZ. 2021-12-05T02:06:52.53 0.3 undecidable manual S 72 33.8439 50 0.28 69
IV.ASSB.HHZ. 2021-12-05T02:06:52.67 3.0 undecidable manual S 0
IV.GUMA.HHZ. 2021-12-05T02:06:50.73 0.3 undecidable manual S 50 28.8489 50 -0.19 71
IV.ASSB.HHZ. 2021-12-05T02:06:49.98 3.0 undecidable manual P 0
IV.CESI.HHZ. 2021-12-05T02:06:47.40 0.3 undecidable manual S 313 17.6712 118 0.03 75
IV.MF5.EHZ. 2021-12-05T02:06:47.24 0.1 undecidable manual P 72 33.8439 50 0 97
IV.GUMA.HHZ. 2021-12-05T02:06:46.42 0.3 undecidable manual P 50 28.8489 50 -0.06 73
IV.LNSS.HHN. 2021-12-05T02:06:46.86 0.3 undecidable manual P 183 32.5452 50 -0.18 70
IV.FDMO.HHZ. 2021-12-05T02:06:46.62 0.3 undecidable manual S 7 15.7731 121 -0.19 73
IV.GAVE.EHZ. 2021-12-05T02:06:46.84 3.0 undecidable manual S -3.06 0
IV.MC2.EHZ. 2021-12-05T02:06:45.34 0.3 undecidable manual S 80 10.3785 132 0.02 76
IT.MTCL.HGN. 2021-12-05T02:06:45.70 0.3 undecidable manual S 335 12.0768 128 -0.05 75
IV.FDMO.HHZ. 2021-12-05T02:06:44.06 0.1 undecidable manual P 7 15.7731 121 -0.05 100
IV.NRCA.HHZ. 2021-12-05T02:06:44.61 0.3 undecidable manual S 149 8.0808 140 -0.15 74
IV.CESI.HHZ. 2021-12-05T02:06:44.55 0.1 undecidable manual P 313 17.6712 118 0.12 98
IT.MTCL.HGN. 2021-12-05T02:06:43.60 0.1 undecidable manual P 335 12.0768 128 0.11 99
IV.NRCA.HHZ. 2021-12-05T02:06:43.01 0.1 undecidable manual P 149 8.0808 140 0.09 100
IV.MC2.EHZ. 2021-12-05T02:06:43.34 0.1 undecidable manual P 80 10.3785 132 0.09 100
IV.VIVA.HHZ. 2021-12-05T02:06:40.02 3.0 undecidable manual S -4.68 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.4 0.000348 0.12 AML other m 2021-12-05T02:06:44.83
IV.NRCA.HHE. ML:1.2 0.00023449999999999998 0.1 AML other m 2021-12-05T02:06:44.82
IV.NRCA.HNE. ML:1.2 0.0002380242 0.0896 AML other m 2021-12-05T02:06:44.83
IV.NRCA.HNN. ML:1.4 0.00033529105 0.12 AML other m 2021-12-05T02:06:44.83
IV.MC2.EHE. ML:0.7 0.00006689815 0.1392 AML other m 2021-12-05T02:06:45.42
IV.MC2.EHN. ML:0.9 0.00010481602 0.16 AML other m 2021-12-05T02:06:46.46
IV.FDMO.HHE. ML:0.5 0.0000296793105 0.1408 AML other m 2021-12-05T02:06:46.71
IV.FDMO.HHN. ML:0.2 0.000015632096 0.08 AML other m 2021-12-05T02:06:47.16
IV.CESI.HHE. ML:0.6 0.000029169667500000004 0.1408 AML other m 2021-12-05T02:06:47.82
IV.CESI.HHN. ML:0.8 0.000059035735000000004 0.1616 AML other m 2021-12-05T02:06:47.80
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