Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 31-01-2024 and time 08:17:01 (UTC) in region 6 km W Piteglio (PT)

A magnitude ML 0.5 earthquake occured in region: 6 km W Piteglio (PT), on

  • 31-01-2024 08:17:01 (UTC)
  • 31-01-2024 09:17:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0250, 10.6990 at 0 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Piteglio PT 6 1683 1683
San Marcello Pistoiese PT 8 6416 8099
Bagni di Lucca LU 9 6161 14260
Cutigliano PT 10 1488 15748
Villa Basilica LU 12 1633 17381
Marliana PT 12 3210 20591
Massa e Cozzile PT 13 7983 28574
Borgo a Mozzano LU 13 6994 35568
Pescia PT 14 19644 55212
Abetone PT 14 621 55833
Coreglia Antelminelli LU 15 5215 61048
Uzzano PT 16 5770 66818
Buggiano PT 16 8825 75643
Montecatini-Terme PT 17 20409 96052
Serravalle Pistoiese PT 17 11659 107711
Fiumalbo MO 18 1280 108991
Barga LU 18 10034 119025
Pieve a Nievole PT 18 9266 128291
Monsummano Terme PT 19 21338 149629
Montecarlo LU 20 4428 154057

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km W of Pistoia (90315 inhabitants)
25 Km NE of Lucca (89046 inhabitants)
36 Km W of Prato (191150 inhabitants)
40 Km E of Viareggio (62467 inhabitants)
42 Km NE of Pisa (89158 inhabitants)
45 Km E of Massa (69479 inhabitants)
48 Km E of Carrara (63133 inhabitants)
49 Km NW of Scandicci (50609 inhabitants)
53 Km NW of Firenze (382808 inhabitants)
61 Km NE of Livorno (159219 inhabitants)
70 Km E of La Spezia (93959 inhabitants)
72 Km S of Modena (184973 inhabitants)
73 Km SW of Bologna (386663 inhabitants)
75 Km S of Reggio nell'Emilia (171345 inhabitants)
86 Km S of Carpi (70699 inhabitants)
89 Km W of Imola (69797 inhabitants)
91 Km SE of Parma (192836 inhabitants)
94 Km NW of Siena (53903 inhabitants)
99 Km W of Faenza (58541 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 0.5 2024-01-31
08:17:01		 44.0252 10.6988 0 2024-01-31
08:25:43		 Sala Sismica INGV-Roma 124962121
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2024-01-31 08:17:01 ± 0.1
Latitude 44.0252 ± 0.0072
Longitude 10.6988 ± 0.0063
Depth (km) 0 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124962121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 850
Semi-minor axis of confidence ellipse (meter) 470
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 187
Circular confidence region, given by single value of horizontal uncertainty (meter) 850.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.04587
Epicentral distance of station farthest from the epicenter (degree) 0.38131
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 124962121
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2024-01-31 08:25:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRMI.HHZ. 2024-01-31T08:17:12.93 0.6 undecidable manual S 139 33.9438 91 0.12 47
IV.ZCCA.HNN. 2024-01-31T08:17:10.12 0.1 undecidable manual P 31 42.3243 90 0.6 83
IV.PSL.EHZ. 2024-01-31T08:17:07.57 0.6 undecidable manual S 96 18.3705 91 0.15 48
IV.CRMI.HHZ. 2024-01-31T08:17:07.49 0.1 undecidable manual P 139 33.9438 91 -0.34 90
GU.CARD.HHZ. 2024-01-31T08:17:07.17 0.6 undecidable manual S 270 17.2716 91 0.13 49
MN.VLC.HNE. 2024-01-31T08:17:06.75 0.1 undecidable manual P 301 29.0487 91 -0.1 96
GU.SARM.EHN. 2024-01-31T08:17:06.39 0.1 undecidable manual P 307 29.5482 91 -0.57 86
GU.MAIM.HHZ. 2024-01-31T08:17:05.34 0.1 undecidable manual P 233 20.6682 91 0.16 96
GU.CARD.HHZ. 2024-01-31T08:17:04.70 0.1 undecidable manual P 270 17.2716 91 0.2 96
IV.PSL.EHZ. 2024-01-31T08:17:04.83 0.1 positive manual P 96 18.3705 91 0.11 98
GU.POPM.HHE. 2024-01-31T08:17:02.61 0.6 undecidable manual S 65 5.0949 94 -0.2 49
IV.BDI.HHZ. 2024-01-31T08:17:02.95 0.1 undecidable manual P 297 9.1797 92 0.06 100
GU.POPM.HHE. 2024-01-31T08:17:01.85 0.1 undecidable manual P 65 5.0949 94 -0.21 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CARD.HHN. ML:0.6 0.00004699064 0.1408 AML other m 2024-01-31T08:17:08.12
GU.CARD.HHE. ML:0.5 0.00003735 0.18 AML other m 2024-01-31T08:17:08.97
IV.CRMI.HHE. ML:0.4 0.000009257747 0.9408 AML other m 2024-01-31T08:17:13.62
IV.CRMI.HHN. ML:0.4 0.000010238126 1.44 AML other m 2024-01-31T08:17:14.06
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