Earthquake with magnitude of ML 0.6 on date 21-02-2022 and time 11:01:26 (UTC) in region 2 km W Vecchiano (PI)

A magnitude ML 0.6 earthquake occured in region: 2 km W Vecchiano (PI), on

  • 21-02-2022 11:01:26 (UTC)
  • 21-02-2022 12:01:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.7900, 10.3660 at 11 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Vecchiano PI 2 12189 12189
San Giuliano Terme PI 7 31399 43588
Pisa PI 9 89158 132746
Massarosa LU 9 22471 155217
Lucca LU 13 89046 244263
Viareggio LU 13 62467 306730
Calci PI 14 6426 313156
Camaiore LU 17 32513 345669
Capannori LU 18 46252 391921
Buti PI 19 5791 397712
Cascina PI 19 45257 442969
Pescaglia LU 20 3526 446495

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NW of Pisa (89158 inhabitants)
13 Km W of Lucca (89046 inhabitants)
13 Km SE of Viareggio (62467 inhabitants)
27 Km N of Livorno (159219 inhabitants)
33 Km SE of Massa (69479 inhabitants)
39 Km SE of Carrara (63133 inhabitants)
47 Km W of Pistoia (90315 inhabitants)
56 Km SE of La Spezia (93959 inhabitants)
60 Km W of Prato (191150 inhabitants)
66 Km W of Scandicci (50609 inhabitants)
72 Km W of Firenze (382808 inhabitants)
94 Km NW of Siena (53903 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
Md 1.2
ML 0.6
2022-02-21
11:01:26
43.7903 10.3665 11 2022-07-08
12:33:52
Bollettino Sismico Italiano INGV 104076901
Reviewed
Rev100
Md 1.2 2022-02-21
11:01:27
43.7942 10.4475 10 2022-02-21
11:05:46
Sala Sismica INGV-Roma 101214621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-02-21 11:01:26 ± 0.29
Latitude 43.7903 ± 0.0117
Longitude 10.3665 ± 0.0224
Depth (km) 11 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 104076901

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1990
Semi-minor axis of confidence ellipse (meter) 1050
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 1990.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 217
Number of associated phases, regardless of their use for origin computation 10
Number of defining phases 10
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) 0.13310
Epicentral distance of station farthest from the epicenter (degree) 0.40559
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 104076901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-05-02 13:52:56

Md:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 3
Type of magnitude Md
Reference to an origin 101214621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-02-21 11:05:46

Md:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 3
Type of magnitude Md
Reference to an origin 104076901
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-05-02 13:52:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.EQUI.HHN. 2022-02-21T11:01:40.53 0.6 undecidable manual S 338 45.0216 50 -0.78 41
IV.BDI.HHZ. 2022-02-21T11:01:38.66 0.6 undecidable manual S 31 35.3424 50 -0.07 51
GU.CARD.HHZ. 2022-02-21T11:01:36.33 0.6 undecidable manual S 19 27.75 50 -0.37 49
GU.EQUI.HHN. 2022-02-21T11:01:35.26 0.3 undecidable manual P 338 45.0216 50 0.07 76
IV.BDI.HHZ. 2022-02-21T11:01:34.24 0.3 undecidable manual P 31 35.3424 50 0.54 69
GU.MAIM.HHZ. 2022-02-21T11:01:33.57 0.6 undecidable manual S 36 16.872 50 -0.24 51
IV.PII.HHZ. 2022-02-21T11:01:32.76 0.6 undecidable manual S 121 14.7741 50 -0.48 49
GU.CARD.HHZ. 2022-02-21T11:01:32.73 0.3 undecidable manual P 19 27.75 50 0.2 76
GU.MAIM.HHZ. 2022-02-21T11:01:31.22 0.1 undecidable manual P 36 16.872 50 0.36 100
IV.PII.HHZ. 2022-02-21T11:01:30.48 0.3 undecidable manual P 121 14.7741 50 -0.06 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PII.HHE. ML:0.8 0.00005429565 0.16 AML other m 2022-02-21T11:01:33.15
IV.PII.HHN. ML:0.6 0.00003481707 0.2176 AML other m 2022-02-21T11:01:33.68
GU.MAIM.HHE. ML:0.5 0.000022639115000000003 0.3584 AML other m 2022-02-21T11:01:34.87
GU.MAIM.HHN. ML:0.5 0.000026019390000000003 0.3392 AML other m 2022-02-21T11:01:33.63
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