Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 22-02-2024 and time 14:51:49 (UTC) in region 3 km E Montelupo Fiorentino (FI)

A magnitude ML 1.1 earthquake occured in region: 3 km E Montelupo Fiorentino (FI), on

  • 22-02-2024 14:51:49 (UTC)
  • 22-02-2024 15:51:49 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.7390, 11.0520 at 8 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
Montelupo Fiorentino FI 3 14098 14098
Lastra a Signa FI 6 20156 34254
Capraia e Limite FI 6 7670 41924
Signa FI 6 19179 61103
Empoli FI 9 48109 109212
Poggio a Caiano PO 9 10007 119219
Carmignano PO 9 14450 133669
Scandicci FI 11 50609 184278
Montespertoli FI 11 13537 197815
Vinci FI 11 14604 212419
Campi Bisenzio FI 12 46166 258585
Quarrata PT 14 26190 284775
San Casciano in Val di Pesa FI 14 17062 301837
Cerreto Guidi FI 14 10870 312707
Lamporecchio PT 15 7508 320215
Sesto Fiorentino FI 16 48958 369173
Castelfiorentino FI 16 17504 386677
Prato PO 16 191150 577827
Firenze FI 17 382808 960635
Calenzano FI 17 17489 978124
Larciano PT 17 6394 984518
San Miniato PI 17 27934 1012452
Impruneta FI 17 14615 1027067
Agliana PT 19 17525 1044592
Fucecchio FI 19 23618 1068210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km W of Scandicci (50609 inhabitants)
16 Km S of Prato (191150 inhabitants)
17 Km W of Firenze (382808 inhabitants)
24 Km SE of Pistoia (90315 inhabitants)
46 Km E of Lucca (89046 inhabitants)
52 Km NW of Siena (53903 inhabitants)
52 Km E of Pisa (89158 inhabitants)
63 Km E of Livorno (159219 inhabitants)
66 Km E of Viareggio (62467 inhabitants)
73 Km W of Arezzo (99543 inhabitants)
80 Km E of Massa (69479 inhabitants)
85 Km E of Carrara (63133 inhabitants)
87 Km SW of Imola (69797 inhabitants)
87 Km S of Bologna (386663 inhabitants)
90 Km SW of Faenza (58541 inhabitants)
96 Km SW of Forlì (117913 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 2024-02-22
14:51:49		 43.7388 11.0525 8 2024-02-28
16:26:02		 Bollettino Sismico Italiano INGV 125598071
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-22 14:51:49 ± 0.07
Latitude 43.7388 ± 0.0036
Longitude 11.0525 ± 0.0050
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 125598071

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 303
Semi-minor axis of confidence ellipse (meter) 283
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 251
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.07734
Epicentral distance of station farthest from the epicenter (degree) 0.53420
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 8
Type of magnitude ML
Reference to an origin 125598071
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-02-28 16:25:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FROS.CHE. 2024-02-22T14:52:08.35 0.6 undecidable manual S 172 59.2962 50 -0.49 43
IV.BDI.HNZ. 2024-02-22T14:52:07.07 0.6 undecidable manual S 315 51.2154 50 0.38 44
IV.LOCA.HHN. 2024-02-22T14:52:06.18 0.6 undecidable manual S 161 50.8158 50 -0.4 44
IV.VMGN.HHN. 2024-02-22T14:52:05.20 0.6 undecidable manual S 58 45.2214 50 0.11 48
IV.RINC.EHN. 2024-02-22T14:52:05.54 0.6 undecidable manual S 70 47.3193 50 -0.1 47
GU.POPM.HHZ. 2024-02-22T14:52:04.00 0.6 undecidable manual S 325 41.3253 50 -0.05 48
IV.PII.HHZ. 2024-02-22T14:52:04.48 0.6 undecidable manual S 268 42.3243 50 0.17 47
IV.RUFI.EHE. 2024-02-22T14:52:02.80 0.6 undecidable manual S 73 38.2284 50 -0.41 45
IV.CSNT.HHZ. 2024-02-22T14:52:01.94 0.6 undecidable manual S 147 35.1426 102 -0.26 47
IV.BOSL.HHE. 2024-02-22T14:52:01.40 0.6 undecidable manual S 50 33.4443 103 -0.23 47
IV.MOCL.EHZ. 2024-02-22T14:52:00.70 0.6 undecidable manual S 19 31.2465 103 -0.19 48
IV.OSSC.HHZ. 2024-02-22T14:52:00.16 0.6 undecidable manual S 147 28.4493 105 0.2 48
IV.FROS.CHE. 2024-02-22T14:52:00.60 0.6 undecidable manual P 172 59.2962 50 -0.17 46
IV.RINC.EHN. 2024-02-22T14:51:59.34 0.6 undecidable manual P 70 47.3193 50 0.42 44
IV.BDI.HNZ. 2024-02-22T14:51:59.47 0.6 undecidable manual P 315 51.2154 50 -0.06 48
IV.LOCA.HHN. 2024-02-22T14:51:59.21 1.0 undecidable manual P 161 50.8158 50 -0.26 23
IV.MPPT.EHN. 2024-02-22T14:51:58.37 0.6 undecidable manual S 7 24.4533 107 -0.24 48
GU.POPM.HHZ. 2024-02-22T14:51:58.41 0.3 undecidable manual P 325 41.3253 50 0.4 68
IV.VMGN.HHN. 2024-02-22T14:51:58.98 0.1 undecidable manual P 58 45.2214 50 0.38 90
GU.MAIM.HHZ. 2024-02-22T14:51:58.73 0.3 undecidable manual P 293 48.9177 50 -0.43 66
IV.RUFI.EHE. 2024-02-22T14:51:57.94 0.3 undecidable manual P 73 38.2284 50 0.42 68
IT.FIE.HGE. 2024-02-22T14:51:57.44 0.6 undecidable manual S 69 20.7681 110 0.03 50
IV.PII.HHZ. 2024-02-22T14:51:57.99 0.3 undecidable manual P 268 42.3243 50 -0.17 71
IV.CSNT.HHZ. 2024-02-22T14:51:57.03 0.6 undecidable manual P 147 35.1426 102 0.09 49
IV.OSSC.HHZ. 2024-02-22T14:51:56.12 0.3 undecidable manual P 147 28.4493 105 0.48 68
IV.BOSL.HHE. 2024-02-22T14:51:56.28 0.6 undecidable manual P 50 33.4443 103 -0.33 46
IV.MOCL.EHZ. 2024-02-22T14:51:55.87 0.3 undecidable manual P 19 31.2465 103 -0.31 70
IV.MPPT.EHN. 2024-02-22T14:51:54.71 0.6 undecidable manual P 7 24.4533 107 -0.15 49
IT.FIE.HGE. 2024-02-22T14:51:54.48 0.6 undecidable manual P 69 20.7681 110 0.31 48
IV.CRMI.HHZ. 2024-02-22T14:51:53.60 0.3 undecidable manual S 317 8.5803 131 -0.09 76
IV.CRMI.HHZ. 2024-02-22T14:51:52.20 0.1 undecidable manual P 317 8.5803 131 0.18 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CRMI.HHE. ML:1.0 0.0001749907 0.2368 AML other m 2024-02-22T14:51:54.23
IV.CRMI.HHN. ML:1.2 0.00023055 0.16 AML other m 2024-02-22T14:51:54.42
IV.CRMI.HNN. ML:1.1 0.0001904134 0.2176 AML other m 2024-02-22T14:51:54.53
IV.CRMI.HNE. ML:1.2 0.0002569514 0.2368 AML other m 2024-02-22T14:51:54.35
IV.OSSC.HHN. ML:1.1 0.0000590538205 0.544 AML other m 2024-02-22T14:52:02.09
IV.OSSC.HHE. ML:1.2 0.00007302139 0.416 AML other m 2024-02-22T14:52:00.63
IV.CSNT.HHE. ML:1.1 0.000053043895 0.5184 AML other m 2024-02-22T14:52:04.08
IV.CSNT.HHN. ML:1.2 0.00006583755 0.32 AML other m 2024-02-22T14:52:02.24
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