Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 23-01-2022 and time 19:05:38 (Italy) in region 2 km SE Pratovecchio Stia (AR)

A magnitude ML 1.2 earthquake occured in region: 2 km SE Pratovecchio Stia (AR), on

  • 23-01-2022 18:05:38 (UTC)
  • 23-01-2022 19:05:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.7730, 11.7310 at 9 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
Pratovecchio Stia AR 2 5845 5845
Castel San Niccolò AR 4 2707 8552
Poppi AR 6 6160 14712
Montemignaio AR 10 566 15278
Ortignano Raggiolo AR 10 878 16156
Bibbiena AR 11 12241 28397
Castel Focognano AR 16 3149 31546
Londa FI 16 1840 33386
Chitignano AR 17 899 34285
Pelago FI 18 7660 41945
Chiusi della Verna AR 18 2023 43968
Reggello FI 19 16290 60258
San Godenzo FI 19 1167 61425
Talla AR 19 1062 62487

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NW of Arezzo (99543 inhabitants)
38 Km E of Firenze (382808 inhabitants)
44 Km E of Scandicci (50609 inhabitants)
52 Km E of Prato (191150 inhabitants)
56 Km SW of Forlì (117913 inhabitants)
58 Km SW of Cesena (96758 inhabitants)
58 Km S of Faenza (58541 inhabitants)
60 Km NE of Siena (53903 inhabitants)
65 Km S of Imola (69797 inhabitants)
68 Km E of Pistoia (90315 inhabitants)
74 Km W of Rimini (147750 inhabitants)
81 Km SW of Ravenna (159116 inhabitants)
86 Km SE of Bologna (386663 inhabitants)
91 Km NW of Perugia (166134 inhabitants)
96 Km W of Pesaro (94582 inhabitants)
99 Km E of Lucca (89046 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 1.2 2022-01-23
18:05:38		 43.7728 11.731 9 2022-01-23
18:14:51		 Sala Sismica INGV-Roma 100100081
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-01-23 18:05:38 ± 0.06
Latitude 43.7728 ± 0.0045
Longitude 11.7310 ± 0.0062
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 100100081

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 444
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 93
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.04856
Epicentral distance of station farthest from the epicenter (degree) 0.49732
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 100100081
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-01-23 18:14:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MPPT.EHZ. 2022-01-23T18:05:56.94 0.3 undecidable manual S 292 55.2003 50 0.41 64
IV.LMD.HHZ. 2022-01-23T18:05:50.62 0.3 undecidable manual S 357 33.8439 50 -0.22 69
IV.BOSL.HHE. 2022-01-23T18:05:50.72 0.3 undecidable manual S 302 33.4443 50 -0.03 72
IV.MPPT.EHZ. 2022-01-23T18:05:49.17 0.3 undecidable manual P 292 55.2003 50 0.09 68
IV.SEI.HHE. 2022-01-23T18:05:48.19 1.0 undecidable manual P 316 43.1235 50 0.97 17
IV.CRE.HHZ. 2022-01-23T18:05:48.18 0.3 undecidable manual S 134 24.5532 110 0.2 70
IV.CSNT.HHZ. 2022-01-23T18:05:47.98 0.3 undecidable manual P 227 48.618 50 -0.08 69
IV.OSSC.HHZ. 2022-01-23T18:05:47.74 0.3 undecidable manual P 235 47.8188 50 -0.2 68
IV.RUFI.EHZ. 2022-01-23T18:05:46.11 0.6 undecidable manual S 292 19.1697 115 -0.13 48
IV.BOSL.HHE. 2022-01-23T18:05:45.69 0.1 undecidable manual P 302 33.4443 50 -0.04 95
IV.SFI.EHZ. 2022-01-23T18:05:45.93 0.6 undecidable manual S 32 17.2716 118 0.26 47
IV.LMD.HHZ. 2022-01-23T18:05:45.52 0.3 positive manual P 357 33.8439 50 -0.27 68
IV.CRE.HHZ. 2022-01-23T18:05:44.01 0.3 undecidable manual P 134 24.5532 110 -0.13 71
IV.RUFI.EHZ. 2022-01-23T18:05:43.11 0.1 undecidable manual P 292 19.1697 115 -0.02 98
IV.ASQU.HHZ. 2022-01-23T18:05:42.36 0.3 undecidable manual S 61 5.3946 149 -0.17 73
IV.SFI.EHZ. 2022-01-23T18:05:42.89 0.1 positive manual P 32 17.2716 118 0.09 97
IV.ASQU.HHZ. 2022-01-23T18:05:41.04 0.1 positive manual P 61 5.3946 149 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASQU.HHN. ML:1.5 0.0006195798 0.1536 AML other m 2022-01-23T18:05:42.82
IV.ASQU.HHE. ML:1.6 0.00078 0.2 AML other m 2022-01-23T18:05:43.04
IV.SFI.EHN. ML:1.3 0.0001915 0.14 AML other m 2022-01-23T18:05:46.38
IV.SFI.EHE. ML:1.3 0.00016779668 0.1408 AML other m 2022-01-23T18:05:46.32
IV.CRE.HHN. ML:1.0 0.000060688925 0.1664 AML other m 2022-01-23T18:05:50.66
IV.LMD.HHE. ML:1.5 0.000146 0.24 AML other m 2022-01-23T18:05:51.22
IV.LMD.HHN. ML:1.2 0.00006544495999999999 0.2048 AML other m 2022-01-23T18:05:51.76
IV.CRE.HHE. ML:1.0 0.00005985 0.26 AML other m 2022-01-23T18:05:52.13
IV.OSSC.HHE. ML:0.7 0.0000168062635 0.2432 AML other m 2022-01-23T18:05:55.74
IV.OSSC.HHN. ML:0.9 0.000018200000000000002 1.62 AML other m 2022-01-23T18:05:55.98
IV.CSNT.HHN. ML:0.9 0.00001819497 0.2944 AML other m 2022-01-23T18:05:55.29
IV.CSNT.HHE. ML:0.7 0.000015977679 0.4224 AML other m 2022-01-23T18:05:59.58
IV.MPPT.EHE. ML:1.1 0.0000309 0.24 AML other m 2022-01-23T18:05:57.72
IV.MPPT.EHN. ML:0.9 0.000022384306999999998 0.4352 AML other m 2022-01-23T18:05:59.74
IV.SFI.HNE. ML:1.2 0.00014998901450000003 0.128 AML other m 2022-01-23T18:05:46.32
IV.SFI.HNN. ML:1.3 0.00018602249999999997 0.1408 AML other m 2022-01-23T18:05:46.38
IV.RUFI.EHE. ML:1.4 0.00017654285 0.3456 AML other m 2022-01-23T18:05:46.41
IV.RUFI.EHN. ML:1.3 0.00015265635 0.32 AML other m 2022-01-23T18:05:46.36
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