Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 03-12-2021 and time 08:15:57 (UTC) in region 7 km W Borgo Pace (PU)

A magnitude ML 1.2 earthquake occured in region: 7 km W Borgo Pace (PU), on

  • 03-12-2021 08:15:57 (UTC)
  • 03-12-2021 09:15:57 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6400, 12.2180 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
Borgo Pace PU 7 606 606
Badia Tedalda AR 8 1087 1693
Mercatello sul Metauro PU 10 1378 3071
Sansepolcro AR 10 15884 18955
Sestino AR 10 1355 20310
San Giustino PG 11 11297 31607
Pieve Santo Stefano AR 15 3183 34790
Belforte all'Isauro PU 15 769 35559
Sant'Angelo in Vado PU 16 4133 39692
Anghiari AR 17 5638 45330
Citerna PG 18 3531 48861
Casteldelci RN 18 407 49268
Carpegna PU 19 1674 50942
Piandimeleto PU 19 2167 53109
Caprese Michelangelo AR 19 1426 54535
Apecchio PU 19 1882 56417
Frontino PU 19 293 56710
Monterchi AR 19 1757 58467

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NE of Arezzo (99543 inhabitants)
55 Km SW of Rimini (147750 inhabitants)
55 Km S of Cesena (96758 inhabitants)
61 Km N of Perugia (166134 inhabitants)
64 Km W of Pesaro (94582 inhabitants)
67 Km S of Forlì (117913 inhabitants)
68 Km W of Fano (60888 inhabitants)
77 Km SE of Faenza (58541 inhabitants)
79 Km E of Firenze (382808 inhabitants)
80 Km E of Siena (53903 inhabitants)
84 Km E of Scandicci (50609 inhabitants)
86 Km NW of Foligno (57155 inhabitants)
87 Km S of Ravenna (159116 inhabitants)
89 Km SE of Imola (69797 inhabitants)
94 Km E of Prato (191150 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 1.2 2021-12-03
08:15:57		 43.6395 12.2183 10 2022-03-30
13:04:32		 Bollettino Sismico Italiano INGV 100275011
Reviewed
Rev100 		ML 1.0 2021-12-03
08:15:57		 43.6332 12.2187 11 2021-12-03
08:23:06		 Sala Sismica INGV-Roma 98084701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-03 08:15:57 ± 0.12
Latitude 43.6395 ± 0.0063
Longitude 12.2183 ± 0.0099
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100275011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 805
Semi-minor axis of confidence ellipse (meter) 677
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 295
Circular confidence region, given by single value of horizontal uncertainty (meter) 810.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.45596
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 100275011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-28 15:29:25

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 98084701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-03 08:23:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
OT.TAR1.HHZ. 2021-12-03T08:17:40.61 3.0 undecidable manual Sn -4.25 0
IV.MILN.HNZ. 2021-12-03T08:17:26.42 3.0 undecidable manual Sg 11.09 0
IT.ORP.HGZ. 2021-12-03T08:17:02.30 3.0 undecidable manual Sn -1.03 0
IV.VOBA.EHZ. 2021-12-03T08:17:02.58 3.0 undecidable manual Sn -5.39 0
MN.TRI.HHZ. 2021-12-03T08:16:42.89 3.0 undecidable manual Pg 8.73 0
IV.ZEN8.EHZ. 2021-12-03T08:16:41.15 3.0 undecidable manual Pg 9.59 0
IV.VAGA.HHZ. 2021-12-03T08:16:24.49 3.0 undecidable manual Pg 4.43 0
IV.MSSA.HHZ. 2021-12-03T08:16:24.14 3.0 undecidable manual Pn 1.15 0
IV.SBPO.HNZ. 2021-12-03T08:16:21.98 3.0 negative manual Pn -1.37 0
IV.SSFR.HHZ. 2021-12-03T08:16:14.51 0.6 undecidable manual S 116 50.616 50 0.59 42
IV.TB03.DHZ.01 2021-12-03T08:16:09.08 0.6 undecidable manual S 150 30.6471 50 0.51 45
IV.PIEI.HHZ. 2021-12-03T08:16:07.45 0.3 undecidable manual S 114 27.9498 50 -0.41 69
IV.ATPC.HHE. 2021-12-03T08:16:07.48 0.6 undecidable manual S 132 26.0517 50 0.12 49
IV.NARO.HHZ. 2021-12-03T08:16:07.76 0.3 undecidable manual S 96 29.2485 50 -0.46 68
IV.SSFR.HHZ. 2021-12-03T08:16:07.29 0.3 undecidable manual P 116 50.616 50 0.23 69
IV.CPGN.EHE. 2021-12-03T08:16:06.34 0.3 undecidable manual S 25 19.6692 117 0.99 56
IV.ATMC.EHE. 2021-12-03T08:16:06.20 0.6 undecidable manual S 185 21.4674 115 0.3 48
IV.CAFI.HHZ. 2021-12-03T08:16:05.39 0.3 undecidable manual P 211 39.9267 50 -0.02 73
IV.CRE.HHZ. 2021-12-03T08:16:05.80 0.3 undecidable manual S 264 21.5673 115 -0.12 74
IV.BADI.EHZ. 2021-12-03T08:16:04.04 0.1 undecidable manual S 172 14.5743 124 0.23 98
IV.TB03.DHZ.01 2021-12-03T08:16:04.22 0.3 undecidable manual P 150 30.6471 50 0.25 71
IV.PIEI.HHZ. 2021-12-03T08:16:03.23 0.1 undecidable manual P 114 27.9498 50 -0.33 94
IV.ATPC.HHE. 2021-12-03T08:16:03.27 0.3 undecidable manual P 132 26.0517 50 0 76
IV.NARO.HHZ. 2021-12-03T08:16:03.38 0.3 undecidable manual P 96 29.2485 50 -0.39 69
IV.CRE.HHZ. 2021-12-03T08:16:02.38 0.3 undecidable manual P 264 21.5673 115 -0.06 75
IV.ATMC.EHE. 2021-12-03T08:16:02.31 0.3 undecidable manual P 185 21.4674 115 -0.12 74
IV.CPGN.EHE. 2021-12-03T08:16:02.43 0.3 undecidable manual P 25 19.6692 117 0.32 72
IV.BADI.EHZ. 2021-12-03T08:16:01.36 0.1 positive manual P 172 14.5743 124 0.14 100
IV.RIBO.EHZ.01 2021-12-03T08:16:00.25 3.0 negative manual P -0.18 0
IV.PARC.HHZ. 2021-12-03T08:16:00.48 0.3 undecidable manual S 58 1.8981 169 -0.72 65
IV.PARC.HHZ. 2021-12-03T08:15:59.45 0.1 undecidable manual P 58 1.8981 169 -0.27 99
IV.MOMA.HNZ. 2021-12-03T08:15:56.24 3.0 undecidable manual P 0.02 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PARC.HHN. ML:1.8 0.0013796905000000002 0.0832 AML other m 2021-12-03T08:16:00.52
IV.PARC.HHE. ML:1.9 0.001447795 0.0832 AML other m 2021-12-03T08:16:00.60
IV.BADI.EHN. ML:1.3 0.000187 0.16 AML other m 2021-12-03T08:16:04.17
IV.BADI.EHE. ML:1.1 0.00013550000000000001 0.14 AML other m 2021-12-03T08:16:04.34
IV.CRE.HHE. ML:0.7 0.000036391615 0.16 AML other m 2021-12-03T08:16:06.01
IV.CRE.HHN. ML:0.9 0.000056860689999999995 0.2624 AML other m 2021-12-03T08:16:06.46
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