Earthquake with magnitude of ML 0.8 on date 01-12-2021 and time 01:16:54 (UTC) in region 3 km E Preci (PG)

A magnitude ML 0.8 earthquake occured in region: 3 km E Preci (PG), on

  • 01-12-2021 01:16:54 (UTC)
  • 01-12-2021 02:16:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8680, 13.0750 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.

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
Castelsantangelo sul Nera MC 7 281 1005
Visso MC 7 1107 2112
Norcia PG 8 4957 7069
Ussita MC 10 444 7513
Sellano PG 12 1079 8592
Cerreto di Spoleto PG 14 1075 9667
Monte Cavallo MC 15 145 9812
Cascia PG 17 3217 13029
Bolognola MC 19 142 13171
Fiordimonte MC 19 202 13373
Pieve Torina MC 20 1458 14831
Acquacanina MC 20 121 14952
Fiastra MC 20 559 15511

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Foligno (57155 inhabitants)
49 Km NE of Terni (111501 inhabitants)
56 Km W of Teramo (54892 inhabitants)
62 Km E of Perugia (166134 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
94 Km NE of Viterbo (67173 inhabitants)
96 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 0.8 2021-12-01
01:16:54
42.8678 13.0753 10 2022-03-30
13:04:34
Bollettino Sismico Italiano INGV 100557041
Reviewed
Rev100
ML 1.2 2021-12-01
01:16:54
42.8713 13.0858 11 2021-12-01
01:26:24
Sala Sismica INGV-Roma 97991851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-01 01:16:54 ± 0.07
Latitude 42.8678 ± 0.0036
Longitude 13.0753 ± 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 100557041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 420
Semi-minor axis of confidence ellipse (meter) 409
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 71
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.04407
Epicentral distance of station farthest from the epicenter (degree) 0.35163
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 97991851
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-01 01:26:24

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 100557041
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-03 10:08:55
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHN. 2021-12-01T01:17:07.18 0.3 undecidable manual S 67 33.9438 50 0.61 63
IV.ASSB.HHN. 2021-12-01T01:17:07.89 0.3 undecidable manual S 300 39.0276 50 -0.03 72
IV.MML1.HNZ. 2021-12-01T01:17:04.69 0.3 undecidable manual S 343 28.5492 50 -0.44 68
IV.LNSS.HHZ. 2021-12-01T01:17:04.96 0.3 undecidable manual S 186 29.5482 50 -0.43 68
IV.GAVE.EHZ. 2021-12-01T01:17:03.71 0.3 undecidable manual S 217 24.4533 112 -0.18 72
IV.ASSB.HHN. 2021-12-01T01:17:02.95 0.1 undecidable manual P 300 39.0276 50 0.59 84
IV.MMO1.EHZ. 2021-12-01T01:17:02.19 0.3 undecidable manual S 80 20.7681 115 -0.52 67
IV.CESI.HHZ. 2021-12-01T01:17:02.71 0.3 undecidable manual S 318 20.5683 115 0.04 75
IV.FDMO.HHZ. 2021-12-01T01:17:01.87 0.3 undecidable manual S 3 18.7701 118 -0.23 72
IV.MF5.EHN. 2021-12-01T01:17:01.62 0.1 undecidable manual P 67 33.9438 50 0.04 97
IV.LNSS.HHZ. 2021-12-01T01:17:00.95 0.1 undecidable manual P 186 29.5482 50 0.05 98
IT.MTCL.HGZ. 2021-12-01T01:17:00.94 0.3 undecidable manual S 336 15.2736 123 -0.12 74
IV.GAVE.EHZ. 2021-12-01T01:17:00.24 0.3 undecidable manual P 217 24.4533 112 0.2 72
IV.MML1.HNZ. 2021-12-01T01:17:00.54 0.1 undecidable manual P 343 28.5492 50 -0.21 95
IV.MMO1.EHZ. 2021-12-01T01:16:59.06 0.1 undecidable manual P 80 20.7681 115 -0.29 94
IV.CESI.HHZ. 2021-12-01T01:16:59.36 0.1 undecidable manual P 318 20.5683 115 0.03 99
IV.FDMO.HHZ. 2021-12-01T01:16:59.05 0.1 undecidable manual P 3 18.7701 118 0.05 99
IV.MC2.EHZ. 2021-12-01T01:16:59.99 0.3 undecidable manual S 62 10.3785 133 0.27 72
IT.MTCL.HGZ. 2021-12-01T01:16:58.45 0.1 undecidable manual P 336 15.2736 123 0.05 100
IV.NRCA.HHZ. 2021-12-01T01:16:58.61 0.3 undecidable manual S 140 4.8951 153 0.05 76
IV.NRCA.HHZ. 2021-12-01T01:16:57.12 0.1 undecidable manual P 140 4.8951 153 0.17 99
IV.MC2.EHZ. 2021-12-01T01:16:57.77 0.1 undecidable manual P 62 10.3785 133 0.15 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.7 0.000036750000000000006 0.42 AML other m 2021-12-01T01:16:58.72
IV.MC2.EHE. ML:1.1 0.000149 0.66 AML other m 2021-12-01T01:17:00.07
IV.MC2.EHN. ML:1.1 0.00015874999999999998 1.5 AML other m 2021-12-01T01:17:01.85
IV.CESI.HHN. ML:0.7 0.00004105 1.66 AML other m 2021-12-01T01:17:03.07
IV.MMO1.EHE. ML:0.7 0.000035538205 0.1 AML other m 2021-12-01T01:17:02.46
IV.MMO1.EHN. ML:0.8 0.0000412116235 0.2 AML other m 2021-12-01T01:17:02.27
IV.LNSS.HHE. ML:0.7 0.0000258504315 0.14 AML other m 2021-12-01T01:17:05.74
IV.LNSS.HHN. ML:0.8 0.000028110900000000002 0.76 AML other m 2021-12-01T01:17:07.97
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