Earthquake with magnitude of ML 0.6 on date 21-02-2024 and time 16:16:43 (UTC) in region 2 km SE Forte dei Marmi (LU)

A magnitude ML 0.6 earthquake occured in region: 2 km SE Forte dei Marmi (LU), on

  • 21-02-2024 16:16:43 (UTC)
  • 21-02-2024 17:16:43 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.9490, 10.1830 at 8 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
Forte dei Marmi LU 2 7510 7510
Pietrasanta LU 4 24007 31517
Seravezza LU 7 13073 44590
Montignoso MS 8 10323 54913
Camaiore LU 10 32513 87426
Massa MS 10 69479 156905
Viareggio LU 11 62467 219372
Stazzema LU 11 3193 222565
Massarosa LU 16 22471 245036
Carrara MS 16 63133 308169
Pescaglia LU 19 3526 311695
Ortonovo SP 19 8277 319972
Fabbriche di Vergemoli LU 20 768 320740

Municipalities with at least 50000 inhabitants

An earthquake occurred to
10 Km SE of Massa (69479 inhabitants)
11 Km NW of Viareggio (62467 inhabitants)
16 Km SE of Carrara (63133 inhabitants)
28 Km W of Lucca (89046 inhabitants)
31 Km NW of Pisa (89158 inhabitants)
33 Km SE of La Spezia (93959 inhabitants)
45 Km N of Livorno (159219 inhabitants)
59 Km W of Pistoia (90315 inhabitants)
74 Km W of Prato (191150 inhabitants)
83 Km W of Scandicci (50609 inhabitants)
88 Km W of Firenze (382808 inhabitants)
91 Km SW of Reggio nell'Emilia (171345 inhabitants)
96 Km S of Parma (192836 inhabitants)
98 Km SW of Modena (184973 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 0.6 2024-02-21
16:16:43
43.9487 10.1828 8 2024-02-21
16:45:24
Sala Sismica INGV-Roma 125425991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-02-21 16:16:43 ± 0.16
Latitude 43.9487 ± 0.0072
Longitude 10.1828 ± 0.0087
Depth (km) 8 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 125425991

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 870
Semi-minor axis of confidence ellipse (meter) 630
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 20
Circular confidence region, given by single value of horizontal uncertainty (meter) 870.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 161
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.21854
Epicentral distance of station farthest from the epicenter (degree) 0.33455
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 125425991
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-02-21 16:45:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.SARM.EHE. 2024-02-21T16:16:54.37 0.3 undecidable manual S 34 31.3464 104 -0.26 71
IV.PLMA.HHZ. 2024-02-21T16:16:53.14 0.6 undecidable manual S 293 28.5492 105 -0.55 44
MN.VLC.HHZ. 2024-02-21T16:16:53.63 0.3 undecidable manual S 35 28.4493 105 -0.03 75
GU.CARD.HHZ. 2024-02-21T16:16:52.33 0.3 undecidable manual S 70 25.3524 107 -0.3 71
GU.EQUI.HHZ. 2024-02-21T16:16:51.83 0.3 undecidable manual S 354 24.2535 107 -0.42 69
GU.MAIM.HHZ. 2024-02-21T16:16:51.91 0.3 undecidable manual S 99 24.9528 107 -0.58 66
IV.PII.HHZ. 2024-02-21T16:16:50.84 0.1 undecidable manual P 132 37.1295 50 -0.19 95
GU.SARM.EHE. 2024-02-21T16:16:50.26 0.1 undecidable manual P 34 31.3464 104 0.36 93
IV.PLMA.HHZ. 2024-02-21T16:16:49.37 0.1 undecidable manual P 293 28.5492 105 0.02 100
MN.VLC.HHZ. 2024-02-21T16:16:49.77 0.1 negative manual P 35 28.4493 105 0.43 92
GU.MAIM.HHZ. 2024-02-21T16:16:48.99 0.1 undecidable manual P 99 24.9528 107 0.32 94
GU.CARD.HHZ. 2024-02-21T16:16:48.97 0.1 undecidable manual P 70 25.3524 107 0.23 96
GU.EQUI.HHZ. 2024-02-21T16:16:48.79 0.1 undecidable manual P 354 24.2535 107 0.27 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CARD.HHE. ML:0.8 0.000032989668 0.1664 AML other m 2024-02-21T16:16:53.08
GU.CARD.HHN. ML:1.0 0.0000675 0.84 AML other m 2024-02-21T16:16:52.62
GU.EQUI.HHE. ML:0.2 0.000011878563 1.2032 AML other m 2024-02-21T16:16:52.30
GU.EQUI.HHN. ML:0.2 0.000010414785500000001 0.7552 AML other m 2024-02-21T16:16:52.35
GU.MAIM.HHE. ML:0.8 0.00004242983 0.2176 AML other m 2024-02-21T16:16:52.60
GU.MAIM.HHN. ML:0.5 0.00002082573 0.2432 AML other m 2024-02-21T16:16:52.91
MN.VLC.HHE. ML:0.6 0.000019943145000000002 0.1408 AML other m 2024-02-21T16:16:53.71
MN.VLC.HHN. ML:0.6 0.0000224490315 0.1664 AML other m 2024-02-21T16:16:53.78
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