Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 16-04-2022 and time 09:37:57 (Italy) in region 3 km N Montaione (FI)

A magnitude ML 1.3 earthquake occured in region: 3 km N Montaione (FI), on

  • 16-04-2022 07:37:57 (UTC)
  • 16-04-2022 09:37:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5770, 10.9120 at 7 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
Montaione FI 3 3700 3700
Gambassi Terme FI 5 4870 8570
Castelfiorentino FI 6 17504 26074
Certaldo FI 11 16121 42195
Palaia PI 12 4612 46807
San Miniato PI 13 27934 74741
Montespertoli FI 15 13537 88278
Peccioli PI 16 4807 93085
San Gimignano SI 16 7820 100905
Montopoli in Val d'Arno PI 16 11148 112053
Empoli FI 16 48109 160162
Lajatico PI 19 1336 161498
Santa Croce sull'Arno PI 19 14601 176099
Capannoli PI 19 6381 182480
Fucecchio FI 19 23618 206098
Montelupo Fiorentino FI 19 14098 220196
Castelfranco di Sotto PI 19 13427 233623
Capraia e Limite FI 19 7670 241293
Volterra PI 20 10519 251812
Terricciola PI 20 4627 256439

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km SW of Scandicci (50609 inhabitants)
35 Km SW of Firenze (382808 inhabitants)
37 Km SW of Prato (191150 inhabitants)
40 Km S of Pistoia (90315 inhabitants)
44 Km E of Pisa (89158 inhabitants)
44 Km NW of Siena (53903 inhabitants)
45 Km SE of Lucca (89046 inhabitants)
49 Km E of Livorno (159219 inhabitants)
62 Km SE of Viareggio (62467 inhabitants)
79 Km W of Arezzo (99543 inhabitants)
80 Km SE of Massa (69479 inhabitants)
86 Km SE of Carrara (63133 inhabitants)
92 Km N of Grosseto (82087 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 1.3 2022-04-16
07:37:57		 43.5767 10.9125 7 2022-07-08
12:33:53		 Bollettino Sismico Italiano INGV 104254421
Reviewed
Rev100 		ML 1.3 2022-04-16
07:37:58		 43.5727 10.9293 10 2022-04-16
07:45:32		 Sala Sismica INGV-Roma 103271281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-04-16 07:37:57 ± 0.06
Latitude 43.5767 ± 0.0027
Longitude 10.9125 ± 0.0037
Depth (km) 7 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 104254421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 288
Semi-minor axis of confidence ellipse (meter) 105
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 224
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 87
Number of associated phases, regardless of their use for origin computation 45
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.83187
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 103271281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-04-16 07:45:32

ML:1.3

Field Value
Value 1.3
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 104254421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-05-06 08:57:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ESAL.HHZ. 2022-04-16T07:39:53.16 3.0 undecidable manual Pg 18.75 0
IV.ECTS.HHZ. 2022-04-16T07:39:52.68 3.0 undecidable manual Pg 19.860001 0
IV.MOCO.HHZ. 2022-04-16T07:39:40.66 3.0 undecidable manual Sn -3.48 0
IV.MCI.EHZ. 2022-04-16T07:39:33.28 3.0 undecidable manual Sg 10.36 0
IV.MMGO.HHZ. 2022-04-16T07:39:30.91 3.0 negative manual Pn 4.4 0
GU.RSP.HNZ. 2022-04-16T07:39:27.85 3.0 undecidable manual Sn 9.95 0
IV.LPEL.HHZ. 2022-04-16T07:39:22.13 3.0 undecidable manual Sg 1.99 0
OX.MPRI.HHZ. 2022-04-16T07:39:22.46 3.0 undecidable manual Sn -1.35 0
IV.TDS.HHZ. 2022-04-16T07:39:20.87 3.0 undecidable manual Pn -0.48 0
SI.BOSI.HHZ. 2022-04-16T07:39:16.46 3.0 undecidable manual Sn -3.01 0
GU.BURY.HHZ. 2022-04-16T07:38:47.07 3.0 undecidable manual Pg 13.88 0
GU.EQUI.HHZ. 2022-04-16T07:38:24.85 0.3 undecidable manual S 317 89.244 50 -0.22 66
IV.SEI.HHZ. 2022-04-16T07:38:18.52 0.3 undecidable manual S 34 63.8916 50 0.22 69
GU.CARD.HHZ. 2022-04-16T07:38:17.07 0.6 undecidable manual S 326 60.5949 50 -0.35 45
IV.RUFI.EHZ. 2022-04-16T07:38:16.02 0.3 undecidable manual S 59 55.9995 50 -0.17 71
IV.BDI.HHZ. 2022-04-16T07:38:16.97 0.3 undecidable manual S 335 59.5959 50 -0.19 70
GU.POPM.HHZ. 2022-04-16T07:38:15.17 0.3 undecidable manual S 347 53.4021 50 -0.34 69
IV.BOSL.HHE. 2022-04-16T07:38:15.89 0.6 undecidable manual S 43 54.0015 50 0.23 47
IV.MOCL.EHZ. 2022-04-16T07:38:15.05 0.3 undecidable manual S 24 52.1034 50 -0.12 72
IV.ARCI.HHZ. 2022-04-16T07:38:14.04 0.3 undecidable manual P 150 92.3409 50 -0.05 68
GU.MAIM.HHZ. 2022-04-16T07:38:14.70 0.6 undecidable manual S 318 50.3163 50 0.02 49
GU.EQUI.HHZ. 2022-04-16T07:38:13.63 0.6 undecidable manual P 317 89.244 50 0.03 46
IV.CASP.HHZ. 2022-04-16T07:38:13.87 0.6 undecidable manual P 183 87.246 50 0.57 40
IV.FROS.CHE. 2022-04-16T07:38:13.38 0.6 undecidable manual S 154 45.2214 50 0.07 49
IV.MPPT.EHN. 2022-04-16T07:38:12.84 0.6 undecidable manual S 19 44.622 50 -0.31 47
IV.MAGO.CHE. 2022-04-16T07:38:11.52 0.3 undecidable manual S 211 39.4272 50 -0.25 72
IV.PII.HHZ. 2022-04-16T07:38:10.18 0.3 undecidable manual S 298 35.0427 102 -0.18 74
IV.SEI.HHZ. 2022-04-16T07:38:09.73 0.1 undecidable manual P 34 63.8916 50 0.03 96
IV.CSNT.HHZ. 2022-04-16T07:38:09.17 0.3 undecidable manual S 111 32.4453 103 -0.32 72
GU.CARD.HHZ. 2022-04-16T07:38:09.45 0.1 undecidable manual P 326 60.5949 50 0.26 92
IV.BDI.HHZ. 2022-04-16T07:38:09.38 0.3 undecidable manual P 335 59.5959 50 0.34 68
GU.POPM.HHZ. 2022-04-16T07:38:08.37 0.3 undecidable manual P 347 53.4021 50 0.28 70
IV.BOSL.HHE. 2022-04-16T07:38:08.12 0.1 undecidable manual P 43 54.0015 50 -0.05 97
IV.RUFI.EHZ. 2022-04-16T07:38:08.63 0.3 undecidable manual P 59 55.9995 50 0.15 71
IV.MOCL.EHZ. 2022-04-16T07:38:07.93 0.1 undecidable manual P 24 52.1034 50 0.04 98
IV.OSSC.HHZ. 2022-04-16T07:38:07.61 0.3 undecidable manual S 102 27.4503 105 -0.19 74
GU.MAIM.HHZ. 2022-04-16T07:38:07.83 0.1 undecidable manual P 318 50.3163 50 0.22 94
IV.CRMI.HHZ. 2022-04-16T07:38:06.86 0.3 undecidable manual S 12 24.8529 106 -0.08 76
IV.MPPT.EHN. 2022-04-16T07:38:06.79 0.3 undecidable manual P 19 44.622 50 0.06 74
IV.FROS.CHE. 2022-04-16T07:38:06.79 0.1 undecidable manual P 154 45.2214 50 -0.03 99
IV.MAGO.CHE. 2022-04-16T07:38:05.97 0.1 undecidable manual P 211 39.4272 50 0.04 100
IV.PII.HHZ. 2022-04-16T07:38:04.93 0.3 undecidable manual P 298 35.0427 102 -0.18 73
IV.CSNT.HHZ. 2022-04-16T07:38:04.50 0.3 undecidable manual P 111 32.4453 103 -0.11 75
IV.CRMI.HHZ. 2022-04-16T07:38:03.50 0.3 undecidable manual P 12 24.8529 106 0.36 72
IV.OSSC.HHZ. 2022-04-16T07:38:03.80 0.3 undecidable manual P 102 27.4503 105 0.17 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRMI.HHE. ML:1.2 0.0001024 0.48 AML other m 2022-04-16T07:38:07.37
IV.CRMI.HHN. ML:1.4 0.00017199999999999998 0.38 AML other m 2022-04-16T07:38:07.71
IV.OSSC.HHN. ML:1.5 0.00016249999999999997 1.32 AML other m 2022-04-16T07:38:08.76
IV.OSSC.HHE. ML:1.5 0.00017999999999999998 1.46 AML other m 2022-04-16T07:38:08.98
IV.CSNT.HHE. ML:1.0 0.0000492 0.64 AML other m 2022-04-16T07:38:09.01
IV.PII.HHE. ML:1.5 0.00011949999999999999 0.36 AML other m 2022-04-16T07:38:10.38
IV.CSNT.HHN. ML:1.2 0.000064 0.34 AML other m 2022-04-16T07:38:10.68
IV.PII.HHN. ML:1.6 0.0001475 0.26 AML other m 2022-04-16T07:38:10.91
GU.POPM.HHN. ML:1.4 0.0000605 0.16 AML other m 2022-04-16T07:38:17.18
GU.POPM.HHE. ML:1.3 0.000042999999999999995 0.18 AML other m 2022-04-16T07:38:20.37
IV.BDI.HHN. ML:1.2 0.00002855 1.82 AML other m 2022-04-16T07:38:20.98
IV.BDI.HHE. ML:1.2 0.00003315 0.28 AML other m 2022-04-16T07:38:21.17
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