Earthquake with magnitude of ML 1.8 on date 26-02-2024 and time 03:19:58 (UTC) in region 3 km NE Certaldo (FI)

A magnitude ML 1.8 earthquake occured in region: 3 km NE Certaldo (FI), on

  • 26-02-2024 03:19:58 (UTC)
  • 26-02-2024 04:19:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.5660, 11.0740 at 11 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Certaldo FI 3 16121 16121
Tavarnelle Val di Pesa FI 8 7800 23921
Barberino Val d'Elsa FI 8 4386 28307
Montespertoli FI 9 13537 41844
Castelfiorentino FI 9 17504 59348
Gambassi Terme FI 10 4870 64218
San Gimignano SI 11 7820 72038
Poggibonsi SI 12 29196 101234
Montaione FI 13 3700 104934
San Casciano in Val di Pesa FI 14 17062 121996
Colle di Val d'Elsa SI 16 21620 143616
Montelupo Fiorentino FI 19 14098 157714
Impruneta FI 20 14615 172329
Greve in Chianti FI 20 13862 186191
Empoli FI 20 48109 234300

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km SW of Scandicci (50609 inhabitants)
27 Km SW of Firenze (382808 inhabitants)
35 Km NW of Siena (53903 inhabitants)
35 Km S of Prato (191150 inhabitants)
43 Km SE of Pistoia (90315 inhabitants)
56 Km SE of Lucca (89046 inhabitants)
57 Km E of Pisa (89158 inhabitants)
62 Km E of Livorno (159219 inhabitants)
66 Km W of Arezzo (99543 inhabitants)
74 Km E of Viareggio (62467 inhabitants)
90 Km N of Grosseto (82087 inhabitants)
91 Km SE of Massa (69479 inhabitants)
97 Km SE of Carrara (63133 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 1.8 2024-02-26
03:19:58
43.5658 11.074 11 2024-02-26
03:27:40
Sala Sismica INGV-Roma 125548991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-26 03:19:58 ± 0.11
Latitude 43.5658 ± 0.0036
Longitude 11.0740 ± 0.0062
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125548991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 495
Semi-minor axis of confidence ellipse (meter) 285
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 236
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
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 33
Number of defining phases 24
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.62773
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 16
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 28
Type of magnitude ML
Reference to an origin 125548991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-26 03:27:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CTI.HHZ. 2024-02-26T03:21:09.79 3.0 undecidable manual Sn -1.2 0
IV.PARC.HHZ. 2024-02-26T03:20:27.81 3.0 undecidable manual S -1.63 0
IV.ATMI.HHZ. 2024-02-26T03:20:17.43 3.0 positive manual P 0.66 0
GU.EQUI.HHZ. 2024-02-26T03:20:15.61 3.0 positive manual P -0.21 0
IV.MOCL.EHZ. 2024-02-26T03:20:14.40 0.6 undecidable manual S 10 49.4172 50 0.15 47
IV.ARCI.HHZ. 2024-02-26T03:20:14.21 3.0 negative manual P -0.09 0
IV.RUFI.EHZ. 2024-02-26T03:20:13.17 0.1 undecidable manual S 49 46.1205 50 -0.2 94
MN.VLC.HHZ. 2024-02-26T03:20:13.62 3.0 positive manual P 0.04 0
IV.PII.HHZ. 2024-02-26T03:20:13.66 0.3 undecidable manual S 292 47.3193 50 -0.03 73
IV.LMD.HHZ. 2024-02-26T03:20:12.45 3.0 negative manual P -0.05 0
IV.SFI.EHZ. 2024-02-26T03:20:11.66 3.0 negative manual P -0.37 0
IV.CAFI.HHZ. 2024-02-26T03:20:11.32 3.0 undecidable manual P -1.6 0
IV.FROS.CHZ. 2024-02-26T03:20:11.55 0.3 undecidable manual S 170 40.0266 50 -0.19 71
IV.BDI.HHZ. 2024-02-26T03:20:10.50 0.3 positive manual P 325 67.0773 50 0.19 68
GU.CARD.HHZ. 2024-02-26T03:20:10.74 0.3 negative manual P 317 69.6747 50 0.04 70
GU.POPM.HHZ. 2024-02-26T03:20:09.25 0.6 positive manual P 335 58.8966 50 0.2 46
IT.FIE.HGE. 2024-02-26T03:20:09.76 0.6 undecidable manual S 33 32.0457 50 0.15 49
IV.LOCA.HHZ. 2024-02-26T03:20:09.49 0.3 undecidable manual S 152 32.5452 50 -0.24 71
IV.SEI.HHZ. 2024-02-26T03:20:09.40 0.6 negative manual P 23 58.7967 50 0.38 44
GU.MAIM.HHZ. 2024-02-26T03:20:09.29 0.1 negative manual P 310 60.495 50 0 95
IV.TRIF.CHZ. 2024-02-26T03:20:08.26 0.6 negative manual P 196 51.9036 50 0.29 45
IV.RINC.EHZ. 2024-02-26T03:20:08.87 0.3 undecidable manual P 50 55.5999 50 0.34 67
IV.MOCL.EHZ. 2024-02-26T03:20:08.02 0.6 positive manual P 10 49.4172 50 0.43 44
IV.BOSL.HHE. 2024-02-26T03:20:07.27 0.3 undecidable manual P 31 47.1195 50 0.04 72
IV.CRMI.HHZ. 2024-02-26T03:20:07.28 0.3 undecidable manual S 343 26.5512 50 -0.87 59
IV.PII.HHZ. 2024-02-26T03:20:07.18 0.1 negative manual P 292 47.3193 50 -0.09 96
IV.RUFI.EHZ. 2024-02-26T03:20:07.27 0.1 undecidable manual P 49 46.1205 50 0.19 94
IV.FROS.CHZ. 2024-02-26T03:20:06.38 0.1 undecidable manual P 170 40.0266 50 0.24 94
IV.CSNT.HHZ. 2024-02-26T03:20:06.13 0.3 undecidable manual S 121 20.1687 118 -0.28 72
IV.LOCA.HHZ. 2024-02-26T03:20:05.11 0.1 undecidable manual P 152 32.5452 50 0.13 97
IT.FIE.HGE. 2024-02-26T03:20:04.89 1.0 undecidable manual P 33 32.0457 50 -0.02 25
IV.CRMI.HHZ. 2024-02-26T03:20:03.70 0.3 negative manual P 343 26.5512 50 -0.37 70
IV.CSNT.HHZ. 2024-02-26T03:20:02.96 0.1 negative manual P 121 20.1687 118 -0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSNT.HHE. ML:1.6 0.0002695 0.34 AML other m 2024-02-26T03:20:06.50
IV.CRMI.HHN. ML:2.0 0.000484 0.6 AML other m 2024-02-26T03:20:07.80
IV.CRMI.HNE. ML:1.9 0.000407 1.04 AML other m 2024-02-26T03:20:07.07
IV.CRMI.HHE. ML:1.7 0.000282 0.3 AML other m 2024-02-26T03:20:07.44
IV.CRMI.HNN. ML:2.0 0.000575 1.24 AML other m 2024-02-26T03:20:08.80
IV.CSNT.HHN. ML:1.6 0.0003155 1.76 AML other m 2024-02-26T03:20:08.08
IV.LOCA.HNN. ML:1.9 0.000331 0.24 AML other m 2024-02-26T03:20:10.27
IV.LOCA.HHN. ML:1.9 0.0003175 0.44 AML other m 2024-02-26T03:20:10.39
IV.LOCA.HHE. ML:1.8 0.00028000000000000003 0.52 AML other m 2024-02-26T03:20:10.61
IV.LOCA.HNE. ML:1.8 0.000302 0.5 AML other m 2024-02-26T03:20:11.61
IV.FROS.CHE. ML:2.0 0.00035150000000000003 0.12 AML other m 2024-02-26T03:20:12.06
IV.FROS.CHN. ML:2.0 0.00035150000000000003 0.24 AML other m 2024-02-26T03:20:12.87
IV.PII.HHE. ML:1.9 0.000202 0.44 AML other m 2024-02-26T03:20:14.07
IV.PII.HHN. ML:2.0 0.0003045 0.24 AML other m 2024-02-26T03:20:14.09
IV.MOCL.EHN. ML:1.7 0.0001428 0.98 AML other m 2024-02-26T03:20:15.13
IV.MOCL.EHE. ML:1.9 0.0002165 1.04 AML other m 2024-02-26T03:20:15.19
IV.TRIF.CHE. ML:1.7 0.0001319 0.14 AML other m 2024-02-26T03:20:15.65
IV.TRIF.CHN. ML:1.7 0.0001275 0.2 AML other m 2024-02-26T03:20:16.73
GU.MAIM.HHN. ML:1.6 0.00007745 0.62 AML other m 2024-02-26T03:20:19.42
IV.SEI.HHE. ML:1.8 0.00011999999999999999 1.18 AML other m 2024-02-26T03:20:19.81
GU.POPM.HHN. ML:1.9 0.0001635 0.88 AML other m 2024-02-26T03:20:19.29
GU.POPM.HHE. ML:1.8 0.00014250000000000002 0.92 AML other m 2024-02-26T03:20:19.64
IV.SEI.HHN. ML:2.0 0.00023099999999999998 0.34 AML other m 2024-02-26T03:20:19.73
GU.CARD.HHE. ML:1.9 0.000126 0.84 AML other m 2024-02-26T03:20:21.33
GU.CARD.HHN. ML:1.9 0.0001337 1.1 AML other m 2024-02-26T03:20:21.75
IV.BDI.HHN. ML:1.9 0.000132 1.08 AML other m 2024-02-26T03:20:21.40
IV.BDI.HHE. ML:1.7 0.0000889 1.24 AML other m 2024-02-26T03:20:22.76
GU.MAIM.HHE. ML:1.5 0.0000669 1.58 AML other m 2024-02-26T03:20:23.89
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download