Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 03-12-2021 and time 08:28:52 (UTC) in region 7 km W Borgo Pace (PU)

A magnitude ML 1.1 earthquake occured in region: 7 km W Borgo Pace (PU), on

  • 03-12-2021 08:28:52 (UTC)
  • 03-12-2021 09:28:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6300, 12.2170 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 9 1087 1693
Sansepolcro AR 9 15884 17577
San Giustino PG 10 11297 28874
Mercatello sul Metauro PU 10 1378 30252
Sestino AR 11 1355 31607
Pieve Santo Stefano AR 15 3183 34790
Belforte all'Isauro PU 16 769 35559
Anghiari AR 16 5638 41197
Sant'Angelo in Vado PU 16 4133 45330
Citerna PG 17 3531 48861
Monterchi AR 18 1757 50618
Apecchio PU 18 1882 52500
Caprese Michelangelo AR 19 1426 53926
Casteldelci RN 19 407 54333
Città di Castello PG 19 39913 94246
Piandimeleto PU 19 2167 96413
Carpegna PU 19 1674 98087
Frontino PU 20 293 98380

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km NE of Arezzo (99543 inhabitants)
56 Km SW of Rimini (147750 inhabitants)
56 Km S of Cesena (96758 inhabitants)
60 Km N of Perugia (166134 inhabitants)
64 Km W of Pesaro (94582 inhabitants)
68 Km S of Forlì (117913 inhabitants)
69 Km W of Fano (60888 inhabitants)
78 Km SE of Faenza (58541 inhabitants)
79 Km E of Firenze (382808 inhabitants)
79 Km E of Siena (53903 inhabitants)
84 Km E of Scandicci (50609 inhabitants)
85 Km NW of Foligno (57155 inhabitants)
88 Km S of Ravenna (159116 inhabitants)
90 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 1.1 2021-12-03
08:28:52		 43.6302 12.2173 10 2022-03-30
13:04:32		 Bollettino Sismico Italiano INGV 100275081
Reviewed
Rev100 		ML 1.1 2021-12-03
08:28:53		 43.6342 12.2092 6 2021-12-03
08:35:14		 Sala Sismica INGV-Roma 98085011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-03 08:28:52 ± 0.18
Latitude 43.6302 ± 0.0099
Longitude 12.2173 ± 0.0149
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 100275081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1108
Semi-minor axis of confidence ellipse (meter) 1002
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 288
Circular confidence region, given by single value of horizontal uncertainty (meter) 1110.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 117
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.26350
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.5
Num. used stations 12
Type of magnitude ML
Reference to an origin 98085011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-03 08:35:14

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 100275081
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-28 15:30:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SGO.HHZ. 2021-12-03T08:30:33.65 3.0 undecidable manual Sn 1.24 0
IT.ORP.HGZ. 2021-12-03T08:30:18.40 3.0 undecidable manual Sn -0.27 0
IV.ZEN8.EHZ. 2021-12-03T08:30:04.72 3.0 undecidable manual Sg 10.97 0
IV.TDS.HHZ. 2021-12-03T08:30:01.98 3.0 undecidable manual Pn -2.34 0
MN.BNI.HHZ. 2021-12-03T08:30:00.14 3.0 undecidable manual Pn 8.28 0
IV.BAG8.EHZ. 2021-12-03T08:29:59.87 3.0 undecidable manual Sn 0.06 0
IV.PZUN.HHZ. 2021-12-03T08:29:46.18 3.0 negative manual Pn -4.19 0
IV.LPEL.HHZ. 2021-12-03T08:29:26.18 3.0 undecidable manual Pn 1.31 0
GU.POPM.HHZ. 2021-12-03T08:29:22.42 3.0 undecidable manual Sn -1.71 0
IV.RIBO.EHZ.01 2021-12-03T08:29:21.16 3.0 undecidable manual Sn -0.83 0
IV.CAVE.HHZ. 2021-12-03T08:29:19.56 3.0 negative manual Pg 3.97 0
IV.RIBO.EHZ.01 2021-12-03T08:29:09.00 3.0 undecidable manual Pn 0.66 0
IT.FIE.HGZ. 2021-12-03T08:29:04.42 3.0 positive manual Pg 1.08 0
IV.NARO.HHZ. 2021-12-03T08:29:02.89 0.6 undecidable manual S 94 29.2485 50 -0.39 46
IV.CRE.HHZ. 2021-12-03T08:29:01.06 0.6 undecidable manual S 267 21.3675 116 -0.04 50
IV.CPGN.EHZ. 2021-12-03T08:29:01.71 0.3 undecidable manual S 24 20.6682 117 0.82 60
IV.PE3.EHZ. 2021-12-03T08:29:01.76 0.6 undecidable manual S 72 23.5542 50 0 50
IV.BADI.EHZ. 2021-12-03T08:28:59.20 0.3 undecidable manual S 171 13.5753 127 0.42 70
IV.PE3.EHZ. 2021-12-03T08:28:58.08 0.3 undecidable manual P 72 23.5542 50 0.08 74
IV.NARO.HHZ. 2021-12-03T08:28:58.61 0.3 undecidable manual P 94 29.2485 50 -0.27 71
IV.CRE.HHZ. 2021-12-03T08:28:57.56 0.1 undecidable manual P 267 21.3675 116 -0.06 100
IV.CPGN.EHZ. 2021-12-03T08:28:57.69 0.3 undecidable manual P 24 20.6682 117 0.2 73
IV.BADI.EHZ. 2021-12-03T08:28:56.58 0.1 undecidable manual P 171 13.5753 127 0.3 96
IV.PARC.HHZ. 2021-12-03T08:28:55.70 0.3 undecidable manual S 40 2.6973 166 -0.87 61
IV.PARC.HHZ. 2021-12-03T08:28:54.69 0.1 undecidable manual P 40 2.6973 166 -0.31 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PARC.HHE. ML:1.8 0.001119 0.08 AML other m 2021-12-03T08:28:55.81
IV.PARC.HHN. ML:1.6 0.0007965 0.1 AML other m 2021-12-03T08:28:55.82
IV.CRE.HHN. ML:0.3 0.000016485185815000003 0.6976 AML other m 2021-12-03T08:28:57.11
IV.CRE.HHE. ML:1.0 0.000065981805 1.6384 AML other m 2021-12-03T08:28:57.12
IV.NARO.HHE. ML:0.9 0.000039344855 0.9184 AML other m 2021-12-03T08:28:58.77
IV.BADI.EHN. ML:1.3 0.00019095865 0.1216 AML other m 2021-12-03T08:28:59.39
IV.BADI.EHE. ML:1.0 0.00010160798500000001 0.1408 AML other m 2021-12-03T08:28:59.56
IV.PE3.EHE. ML:1.3 0.00011798013 0.3392 AML other m 2021-12-03T08:29:02.43
IV.PE3.EHN. ML:1.3 0.00013473455 0.3392 AML other m 2021-12-03T08:29:02.48
IV.NARO.HHN. ML:0.8 0.00003395155 0.7616 AML other m 2021-12-03T08:29:16.51
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