Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 20-11-2022 and time 03:56:39 (Italy) in region 3 km SW Castel Focognano (AR)

A magnitude ML 1.5 earthquake occured in region: 3 km SW Castel Focognano (AR), on

  • 20-11-2022 02:56:39 (UTC)
  • 20-11-2022 03:56:39 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.6360, 11.8030 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
Castel Focognano AR 3 3149 3149
Talla AR 4 1062 4211
Ortignano Raggiolo AR 7 878 5089
Bibbiena AR 7 12241 17330
Chitignano AR 7 899 18229
Subbiano AR 9 6331 24560
Capolona AR 9 5438 29998
Poppi AR 10 6160 36158
Castiglion Fibocchi AR 12 2167 38325
Chiusi della Verna AR 13 2023 40348
Castel San Niccolò AR 14 2707 43055
Loro Ciuffenna AR 15 5819 48874
Caprese Michelangelo AR 15 1426 50300
Laterina AR 16 3517 53817
Pratovecchio Stia AR 18 5845 59662
Montemignaio AR 19 566 60228
Pieve Santo Stefano AR 20 3183 63411
Terranuova Bracciolini AR 20 12346 75757
Arezzo AR 20 99543 175300

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Arezzo (99543 inhabitants)
46 Km E of Firenze (382808 inhabitants)
52 Km E of Scandicci (50609 inhabitants)
52 Km NE of Siena (53903 inhabitants)
63 Km E of Prato (191150 inhabitants)
66 Km SW of Cesena (96758 inhabitants)
68 Km S of Forlì (117913 inhabitants)
73 Km S of Faenza (58541 inhabitants)
76 Km NW of Perugia (166134 inhabitants)
77 Km SW of Rimini (147750 inhabitants)
78 Km E of Pistoia (90315 inhabitants)
80 Km S of Imola (69797 inhabitants)
93 Km SW of Ravenna (159116 inhabitants)
94 Km W of Pesaro (94582 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 1.5 2022-11-20
02:56:39		 43.6363 11.8028 10 2024-03-01
15:28:06		 Bollettino Sismico Italiano INGV 112290261
Reviewed
Rev100 		ML 1.2 2022-11-20
02:56:39		 43.6295 11.789 10 2022-11-20
03:08:42		 Sala Sismica INGV-Roma 112010491
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-11-20 02:56:39 ± 0.07
Latitude 43.6363 ± 0.0036
Longitude 11.8028 ± 0.0037
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 112290261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 365
Semi-minor axis of confidence ellipse (meter) 199
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 204
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.75723
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 112290261
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-11-28 08:37:43

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 112010491
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-11-20 03:08:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PII.HHZ. 2022-11-20T02:56:55.99 3.0 undecidable manual P -0.68 0
IV.BOSL.HHE. 2022-11-20T02:56:55.50 0.3 undecidable manual S 314 47.4192 50 0.22 69
IT.FIE.HGE. 2022-11-20T02:56:54.70 0.6 undecidable manual S 295 44.9217 50 0.07 48
IV.MGAB.HHZ. 2022-11-20T02:56:54.85 0.3 undecidable manual P 163 84.0492 50 0.39 62
IV.CSNT.HHZ. 2022-11-20T02:56:54.55 0.6 undecidable manual S 246 45.0216 50 -0.1 47
IV.OSSC.HHE. 2022-11-20T02:56:54.99 0.6 undecidable manual S 255 46.5201 50 -0.05 48
IV.VMGN.HHN. 2022-11-20T02:56:54.00 0.3 undecidable manual S 329 41.4252 50 0.32 69
IV.CAFI.HHZ. 2022-11-20T02:56:52.17 0.6 undecidable manual S 159 36.5412 50 -0.22 47
IV.FROS.CHE. 2022-11-20T02:56:52.68 0.1 undecidable manual P 228 70.374 50 0.33 86
IV.ATMC.EHE. 2022-11-20T02:56:52.71 0.6 undecidable manual S 124 37.7289 50 -0.01 49
IV.PARC.HHZ. 2022-11-20T02:56:52.06 0.6 undecidable manual S 88 35.0427 50 0.08 49
IT.SNS1.HNZ. 2022-11-20T02:56:50.08 0.3 undecidable manual S 105 27.2505 50 0.16 73
IV.RUFI.EHZ. 2022-11-20T02:56:50.98 0.3 undecidable manual S 314 32.4453 50 -0.32 70
IV.SFI.EHZ. 2022-11-20T02:56:50.94 0.3 undecidable manual S 7 29.9478 50 0.3 70
IV.ATMI.HHZ. 2022-11-20T02:56:49.06 0.3 undecidable manual P 132 50.2164 50 -0.19 69
Y1.T1756.HNZ. 2022-11-20T02:56:49.66 0.6 undecidable manual P 27 52.7028 50 0.04 47
IV.LMD.HHE. 2022-11-20T02:56:48.81 0.1 undecidable manual P 351 49.5171 50 -0.32 90
IV.BOSL.HHE. 2022-11-20T02:56:48.89 0.1 undecidable manual P 314 47.4192 50 0.09 95
IT.FIE.HGE. 2022-11-20T02:56:48.36 0.1 undecidable manual P 295 44.9217 50 -0.06 96
IV.CSNT.HHZ. 2022-11-20T02:56:48.64 0.1 undecidable manual P 246 45.0216 50 0.2 93
IV.OSSC.HHE. 2022-11-20T02:56:48.45 0.3 undecidable manual P 255 46.5201 50 -0.21 69
IV.CAFI.HHZ. 2022-11-20T02:56:47.03 0.3 undecidable manual P 159 36.5412 50 -0.1 72
IV.VMGN.HHN. 2022-11-20T02:56:47.92 0.3 undecidable manual P 329 41.4252 50 0.04 72
IV.ATMC.EHE. 2022-11-20T02:56:47.06 0.1 undecidable manual P 124 37.7289 50 -0.26 93
IV.BADI.EHZ. 2022-11-20T02:56:47.56 0.6 negative manual P 111 38.1285 50 0.18 47
IV.PARC.HHZ. 2022-11-20T02:56:46.94 0.3 undecidable manual P 88 35.0427 50 0.05 73
IV.RUFI.EHZ. 2022-11-20T02:56:46.22 0.3 undecidable manual P 314 32.4453 50 -0.28 70
IV.CRE.HHZ. 2022-11-20T02:56:45.40 0.3 undecidable manual S 99 12.0768 130 0 77
IT.SNS1.HNZ. 2022-11-20T02:56:45.31 1.0 undecidable manual P 105 27.2505 50 -0.4 23
IV.SFI.EHZ. 2022-11-20T02:56:45.86 0.1 undecidable manual P 7 29.9478 50 -0.26 94
IV.CRE.HHZ. 2022-11-20T02:56:43.22 0.1 positive manual P 99 12.0768 130 0.13 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRE.HHE. ML:1.4 0.00025 0.3 AML other m 2022-11-20T02:56:45.61
IV.CRE.HHN. ML:1.5 0.000332 0.3 AML other m 2022-11-20T02:56:45.47
IV.BADI.EHE. ML:1.6 0.000142 0.42 AML other m 2022-11-20T02:56:53.76
IV.BADI.EHN. ML:1.5 0.0001105 0.56 AML other m 2022-11-20T02:56:54.61
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