Earthquake with magnitude of ML 1.3 on date 11-01-2024 and time 21:49:20 (UTC) in region 5 km N Calci (PI)

A magnitude ML 1.3 earthquake occured in region: 5 km N Calci (PI), on

  • 11-01-2024 21:49:20 (UTC)
  • 11-01-2024 22:49:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.7760, 10.5210 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
Calci PI 6 6426 6426
San Giuliano Terme PI 6 31399 37825
Buti PI 8 5791 43616
Lucca LU 8 89046 132662
Capannori LU 9 46252 178914
Vicopisano PI 10 8559 187473
Porcari LU 11 8845 196318
Vecchiano PI 11 12189 208507
Bientina PI 11 8062 216569
Cascina PI 11 45257 261826
Pisa PI 12 89158 350984
Calcinaia PI 13 12439 363423
Altopascio LU 13 15481 378904
Montecarlo LU 15 4428 383332
Pontedera PI 15 29223 412555
Santa Maria a Monte PI 16 13253 425808
Chiesina Uzzanese PT 18 4552 430360
Massarosa LU 18 22471 452831
Uzzano PT 19 5770 458601
Ponsacco PI 19 15611 474212
Pescia PT 20 19644 493856
Villa Basilica LU 20 1633 495489
Ponte Buggianese PT 20 8804 504293
Castelfranco di Sotto PI 20 13427 517720

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km S of Lucca (89046 inhabitants)
12 Km NE of Pisa (89158 inhabitants)
24 Km E of Viareggio (62467 inhabitants)
30 Km NE of Livorno (159219 inhabitants)
36 Km W of Pistoia (90315 inhabitants)
42 Km SE of Massa (69479 inhabitants)
48 Km W of Prato (191150 inhabitants)
48 Km SE of Carrara (63133 inhabitants)
53 Km W of Scandicci (50609 inhabitants)
59 Km W of Firenze (382808 inhabitants)
67 Km SE of La Spezia (93959 inhabitants)
83 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
Reviewed
Rev100
ML 1.3 2024-01-11
21:49:20
43.7757 10.5213 11 2024-01-11
21:56:15
Sala Sismica INGV-Roma 124586001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-11 21:49:20 ± 0.19
Latitude 43.7757 ± 0.0099
Longitude 10.5213 ± 0.0336
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 124586001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2711
Semi-minor axis of confidence ellipse (meter) 969
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 257
Circular confidence region, given by single value of horizontal uncertainty (meter) 2710.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 174
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) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.31836
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 124586001
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-11 21:56:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.POPM.HHZ. 2024-01-11T21:49:32.37 0.6 undecidable manual S 32 35.3424 50 -0.07 48
IV.BDI.HHZ. 2024-01-11T21:49:31.36 0.6 undecidable manual S 11 32.4453 50 -0.3 46
GU.CARD.HHZ. 2024-01-11T21:49:30.12 0.6 undecidable manual S 354 27.9498 50 -0.35 46
GU.POPM.HHZ. 2024-01-11T21:49:27.55 0.1 undecidable manual P 32 35.3424 50 0.18 95
GU.CARD.HHZ. 2024-01-11T21:49:26.55 0.6 undecidable manual P 354 27.9498 50 0.31 47
IV.BDI.HHZ. 2024-01-11T21:49:26.84 1.0 undecidable manual P 11 32.4453 50 -0.07 24
GU.MAIM.HHZ. 2024-01-11T21:49:26.88 0.6 undecidable manual S 351 15.4734 125 -0.06 50
GU.MAIM.HHZ. 2024-01-11T21:49:24.56 0.6 undecidable manual P 351 15.4734 125 0.36 47
IV.PII.HHZ. 2024-01-11T21:49:24.11 0.6 undecidable manual S 177 5.994 151 -0.56 45
IV.PII.HHZ. 2024-01-11T21:49:23.05 0.1 undecidable manual P 177 5.994 151 0.16 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PII.HHN. ML:1.6 0.0005915 0.3 AML other m 2024-01-11T21:49:24.51
IV.PII.HHE. ML:1.6 0.0005914999999999999 0.26 AML other m 2024-01-11T21:49:24.52
GU.MAIM.HHN. ML:1.2 0.00013015 0.26 AML other m 2024-01-11T21:49:27.16
GU.MAIM.HHE. ML:1.1 0.00011300000000000001 0.4 AML other m 2024-01-11T21:49:27.58
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