Earthquake with magnitude of ML 1.1 on date 13-04-2024 and time 06:45:32 (UTC) in region 5 km SW San Gimignano (SI)

A magnitude ML 1.1 earthquake occured in region: 5 km SW San Gimignano (SI), on

  • 13-04-2024 06:45:32 (UTC)
  • 13-04-2024 08:45:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4410, 11.0030 at 3 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
San Gimignano SI 5 7820 7820
Colle di Val d'Elsa SI 10 21620 29440
Gambassi Terme FI 12 4870 34310
Casole d'Elsa SI 12 3897 38207
Poggibonsi SI 12 29196 67403
Volterra PI 12 10519 77922
Certaldo FI 12 16121 94043
Montaione FI 14 3700 97743
Barberino Val d'Elsa FI 18 4386 102129
Monteriggioni SI 18 9810 111939
Castelfiorentino FI 19 17504 129443
Pomarance PI 19 5897 135340
Tavarnelle Val di Pesa FI 19 7800 143140

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km W of Siena (53903 inhabitants)
38 Km SW of Scandicci (50609 inhabitants)
42 Km SW of Firenze (382808 inhabitants)
50 Km S of Prato (191150 inhabitants)
55 Km S of Pistoia (90315 inhabitants)
57 Km E of Livorno (159219 inhabitants)
57 Km SE of Pisa (89158 inhabitants)
60 Km SE of Lucca (89046 inhabitants)
71 Km W of Arezzo (99543 inhabitants)
76 Km N of Grosseto (82087 inhabitants)
77 Km SE of Viareggio (62467 inhabitants)
96 Km SE of Massa (69479 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 1.1 2024-04-13
06:45:32
43.4412 11.0032 3 2024-04-13
06:53:36
Sala Sismica INGV-Roma 126690051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-04-13 06:45:32 ± 0.31
Latitude 43.4412 ± 0.0099
Longitude 11.0032 ± 0.0149
Depth (km) 3 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 126690051

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1466
Semi-minor axis of confidence ellipse (meter) 729
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 311
Circular confidence region, given by single value of horizontal uncertainty (meter) 1470.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 232
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 9
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.33455
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 126690051
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-04-13 06:53:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRAC.EHZ. 2024-04-13T06:46:52.95 3.0 undecidable manual Pg 23.219999 0
IV.GRI.EHZ. 2024-04-13T06:46:51.29 3.0 undecidable manual Pn 5.08 0
RF.GEPF.HHZ. 2024-04-13T06:46:20.81 3.0 undecidable manual Sn -0.9 0
IV.CQUE.HHZ. 2024-04-13T06:46:08.52 3.0 negative manual Pn -2.69 0
IV.CRE.HHZ. 2024-04-13T06:46:07.45 3.0 undecidable manual Sg 7.32 0
IV.FOSV.EHZ. 2024-04-13T06:46:06.03 3.0 undecidable manual Sn -2.56 0
IV.FIAM.HHZ. 2024-04-13T06:46:05.25 3.0 positive manual Pg 13.36 0
IV.PTQR.HHZ. 2024-04-13T06:46:01.49 3.0 undecidable manual Pg 5.9 0
IV.FOSV.EHZ. 2024-04-13T06:45:51.71 3.0 undecidable manual Pg 10.08 0
IV.FDMO.HHZ. 2024-04-13T06:45:50.44 3.0 negative manual Pg 5.43 0
IV.FROS.CHZ. 2024-04-13T06:45:41.83 0.6 undecidable manual S 154 28.4493 96 -0.23 51
IV.LOCA.HHZ. 2024-04-13T06:45:41.10 0.6 undecidable manual S 125 25.6521 97 0 54
IV.CSNT.HHZ. 2024-04-13T06:45:40.15 0.6 undecidable manual S 81 23.3544 97 -0.15 53
IV.OSSC.HHZ. 2024-04-13T06:45:39.39 0.6 undecidable manual S 65 21.5673 98 -0.28 51
IV.CRTC.HHZ. 2024-04-13T06:45:39.39 3.0 undecidable manual P -0.2 0
IV.TRIF.CHZ. 2024-04-13T06:45:39.30 0.1 undecidable manual P 193 37.1295 95 -0.28 100
IV.FROS.CHZ. 2024-04-13T06:45:38.22 0.1 positive manual P 154 28.4493 96 0.36 100
IV.CSNT.HHZ. 2024-04-13T06:45:37.03 1.0 negative manual P 81 23.3544 97 0.18 26
IV.LOCA.HHZ. 2024-04-13T06:45:37.73 1.0 undecidable manual P 125 25.6521 97 0.43 25
IV.OSSC.HHZ. 2024-04-13T06:45:36.93 1.0 undecidable manual P 65 21.5673 98 0.44 25
IV.SFI.EHZ. 2024-04-13T06:45:30.96 3.0 undecidable manual Pn -4.36 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHN. ML:1.0 0.0000719 1.54 AML other m 2024-04-13T06:45:40.22
IV.CSNT.HHE. ML:0.9 0.00006110000000000001 0.12 AML other m 2024-04-13T06:45:40.43
IV.CSNT.HHN. ML:1.1 0.0000878 0.54 AML other m 2024-04-13T06:45:40.50
IV.LOCA.HHN. ML:0.8 0.0000344 0.46 AML other m 2024-04-13T06:45:41.32
IV.OSSC.HHE. ML:0.9 0.00005665 1.28 AML other m 2024-04-13T06:45:41.08
IV.LOCA.HHE. ML:0.7 0.000031700000000000005 1.24 AML other m 2024-04-13T06:45:42.80
IV.FROS.CHN. ML:1.4 0.00014800000000000002 1.56 AML other m 2024-04-13T06:45:42.13
IV.FROS.CHE. ML:1.6 0.000195 1.76 AML other m 2024-04-13T06:45:43.91
IV.LOCA.HNE. ML:1.2 0.00009172175 0.58 AML other m 2024-04-13T06:45:54.79
IV.LOCA.HNN. ML:1.3 0.0001299126 0.64 AML other m 2024-04-13T06:45:59.21
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