Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 03-10-2023 and time 04:09:03 (Italy) in region 1 km W Castelnuovo di Val di Cecina (PI)

A magnitude ML 1.9 earthquake occured in region: 1 km W Castelnuovo di Val di Cecina (PI), on

  • 03-10-2023 02:09:03 (UTC)
  • 03-10-2023 04:09:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2090, 10.8990 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Castelnuovo di Val di Cecina PI 1 2231 2231
Monterotondo Marittimo GR 8 1371 3602
Pomarance PI 10 5897 9499
Montieri GR 13 1204 10703
Radicondoli SI 13 914 11617
Monteverdi Marittimo PI 15 758 12375
Chiusdino SI 17 1903 14278
Massa Marittima GR 18 8375 22653
Casole d'Elsa SI 19 3897 26550

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km W of Siena (53903 inhabitants)
53 Km NW of Grosseto (82087 inhabitants)
61 Km SE of Livorno (159219 inhabitants)
65 Km SW of Scandicci (50609 inhabitants)
69 Km SW of Firenze (382808 inhabitants)
69 Km SE of Pisa (89158 inhabitants)
77 Km S of Prato (191150 inhabitants)
78 Km SE of Lucca (89046 inhabitants)
81 Km S of Pistoia (90315 inhabitants)
85 Km W of Arezzo (99543 inhabitants)
90 Km SE of Viareggio (62467 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 1.9 2023-10-03
02:09:03		 43.2092 10.8987 10 2023-10-03
02:16:40		 Sala Sismica INGV-Roma 121692101
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-03 02:09:03 ± 0.14
Latitude 43.2092 ± 0.0054
Longitude 10.8987 ± 0.0123
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121692101

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 909
Semi-minor axis of confidence ellipse (meter) 514
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 99
Circular confidence region, given by single value of horizontal uncertainty (meter) 910.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.04681
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 21
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 121692101
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-03 02:16:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
CH.BERNI.HHZ. 2023-10-03T02:09:52.36 3.0 negative manual Pn -2.58 0
GU.GSCL.HHZ. 2023-10-03T02:09:27.32 3.0 positive manual P 1.21 0
IV.PARC.HHZ. 2023-10-03T02:09:25.13 3.0 positive manual P -0.36 0
IV.PLMA.HHZ. 2023-10-03T02:09:25.58 3.0 negative manual P 0.01 0
IV.ATMI.HHZ. 2023-10-03T02:09:25.20 3.0 positive manual P 0.69 0
IV.LMD.HHZ. 2023-10-03T02:09:24.37 0.6 positive manual P 34 116.1948 50 0.88 32
IV.FNVD.HHZ. 2023-10-03T02:09:23.02 0.3 undecidable manual P 10 107.9142 50 0.81 51
IV.CRMI.HHZ. 2023-10-03T02:09:23.87 0.3 undecidable manual S 6 65.3901 50 -0.36 65
IV.PII.HHZ. 2023-10-03T02:09:23.26 0.3 undecidable manual S 332 64.3911 50 -0.69 58
IV.SFI.EHZ. 2023-10-03T02:09:23.21 3.0 undecidable manual P -0.33 0
MN.VLC.HHZ. 2023-10-03T02:09:23.63 0.1 undecidable manual P 339 113.0979 50 0.61 73
IV.SEI.HHZ. 2023-10-03T02:09:21.95 0.1 undecidable manual P 21 100.7214 50 0.83 68
IV.CRE.HHZ. 2023-10-03T02:09:21.86 3.0 negative manual P 0.13 0
IV.SACS.HHZ. 2023-10-03T02:09:21.51 3.0 undecidable manual P 0.2 0
IV.BDI.HHZ. 2023-10-03T02:09:20.50 0.1 undecidable manual P 346 97.8243 50 -0.16 84
IV.CAFI.HHZ. 2023-10-03T02:09:19.86 3.0 negative manual P -0.58 0
IV.CASP.HHZ. 2023-10-03T02:09:19.16 0.1 undecidable manual S 183 46.5201 50 -0.02 96
IV.MOCL.EHZ. 2023-10-03T02:09:19.71 0.6 undecidable manual P 14 91.1421 50 0.08 43
IV.RUFI.EHZ. 2023-10-03T02:09:19.02 0.3 undecidable manual P 35 85.3479 50 0.28 63
IV.PSL.EHZ. 2023-10-03T02:09:19.39 0.3 undecidable manual P 2 88.7445 50 0.12 65
IV.MCIV.CHZ. 2023-10-03T02:09:18.60 0.3 undecidable manual P 127 79.1652 50 0.82 54
IV.OSSC.HHZ. 2023-10-03T02:09:18.35 0.1 undecidable manual S 39 44.7219 50 -0.36 89
IV.MPPT.EHZ. 2023-10-03T02:09:18.80 0.3 undecidable manual P 10 84.4488 50 0.2 64
GU.MAIM.HHZ. 2023-10-03T02:09:18.87 0.3 undecidable manual P 337 84.6486 50 0.23 64
TV.SF11.HHZ. 2023-10-03T02:09:17.97 0.3 undecidable manual P 121 73.6707 50 1.03 49
IV.CSNT.HHZ. 2023-10-03T02:09:17.44 0.1 undecidable manual S 47 43.0236 50 -0.83 76
IV.ARCI.HHZ. 2023-10-03T02:09:15.60 0.1 undecidable manual P 130 61.2942 50 0.57 82
IV.CRMI.HHZ. 2023-10-03T02:09:15.63 0.1 undecidable manual P 6 65.3901 50 -0.04 92
IV.PII.HHZ. 2023-10-03T02:09:14.99 0.1 undecidable manual P 332 64.3911 50 -0.52 83
IV.RIBO.EHZ.01 2023-10-03T02:09:14.54 0.1 undecidable manual S 157 31.2465 50 -0.57 86
IV.CSNT.HHZ. 2023-10-03T02:09:12.06 0.1 undecidable manual P 47 43.0236 50 -0.17 93
IV.OSSC.HHZ. 2023-10-03T02:09:12.34 0.1 undecidable manual P 39 44.7219 50 -0.14 94
IV.CASP.HHZ. 2023-10-03T02:09:12.69 0.1 undecidable manual P 183 46.5201 50 -0.06 95
IV.FROS.CHZ. 2023-10-03T02:09:11.68 0.1 undecidable manual S 90 20.868 114 -0.22 96
IV.RIBO.EHZ.01 2023-10-03T02:09:10.35 0.1 undecidable manual P 157 31.2465 50 -0.05 98
IV.TRIF.CHZ. 2023-10-03T02:09:08.47 0.1 undecidable manual S 178 10.4784 132 -0.4 94
IV.FROS.CHZ. 2023-10-03T02:09:08.67 0.1 undecidable manual P 90 20.868 114 0.12 98
IV.TRIF.CHZ. 2023-10-03T02:09:06.68 0.1 undecidable manual P 178 10.4784 132 -0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHN. ML:2.8 0.007949999999999999 0.54 AML other m 2023-10-03T02:09:09.27
IV.TRIF.CHE. ML:2.7 0.0061400000000000005 1.46 AML other m 2023-10-03T02:09:10.92
IV.FROS.CHE. ML:2.4 0.00185 0.64 AML other m 2023-10-03T02:09:14.48
IV.FROS.CHN. ML:2.5 0.0020949999999999996 1.06 AML other m 2023-10-03T02:09:14.71
IV.CSNT.HHN. ML:2.0 0.00027850000000000005 0.44 AML other m 2023-10-03T02:09:18.42
IV.CSNT.HHE. ML:1.9 0.000259 0.7 AML other m 2023-10-03T02:09:18.31
IV.OSSC.HHN. ML:2.2 0.0004535 0.22 AML other m 2023-10-03T02:09:19.34
IV.CASP.HHN. ML:2.1 0.000336 0.62 AML other m 2023-10-03T02:09:19.35
IV.OSSC.HHE. ML:2.2 0.000455 0.98 AML other m 2023-10-03T02:09:20.63
IV.MCIV.CHE. ML:1.9 0.000108 0.22 AML other m 2023-10-03T02:09:20.54
IV.CASP.HHE. ML:2.0 0.000259 1 AML other m 2023-10-03T02:09:20.94
GU.MAIM.HHE. ML:1.6 0.00005555 0.5 AML other m 2023-10-03T02:09:22.69
GU.MAIM.HHN. ML:1.7 0.0000677 0.5 AML other m 2023-10-03T02:09:22.40
IV.CAFI.HHE. ML:1.5 0.00004235 1.52 AML other m 2023-10-03T02:09:23.20
IV.PII.HHN. ML:2.1 0.0002235 0.36 AML other m 2023-10-03T02:09:23.85
IV.ARCI.HHN. ML:1.9 0.00014649999999999998 1.16 AML other m 2023-10-03T02:09:24.06
IV.PII.HHE. ML:1.9 0.0001575 1.54 AML other m 2023-10-03T02:09:24.94
IV.RIBO.EHE.01 ML:2.4 0.00113 1.02 AML other m 2023-10-03T02:09:24.23
IV.CRMI.HHE. ML:1.4 0.0000466 0.72 AML other m 2023-10-03T02:09:25.14
IV.ARCI.HHE. ML:1.9 0.00014700000000000002 1.2 AML other m 2023-10-03T02:09:25.88
IV.RIBO.EHN.01 ML:2.5 0.00141 0.64 AML other m 2023-10-03T02:09:25.49
IV.CRMI.HHN. ML:1.7 0.00008995 0.38 AML other m 2023-10-03T02:09:26.54
IV.SACS.HHE. ML:1.5 0.000033600000000000004 1.02 AML other m 2023-10-03T02:09:27.77
IV.SEI.HHN. ML:2.1 0.000126 0.36 AML other m 2023-10-03T02:09:29.01
TV.SF11.HHE. ML:2.3 0.000307 0.72 AML other m 2023-10-03T02:09:29.22
IV.FNVD.HHN. ML:1.5 0.0000295 0.42 AML other m 2023-10-03T02:09:29.55
IV.SACS.HHN. ML:1.4 0.0000322 0.46 AML other m 2023-10-03T02:09:29.50
TV.SF11.HHN. ML:2.0 0.00015949999999999997 1.24 AML other m 2023-10-03T02:09:30.82
IV.MCIV.CHN. ML:1.8 0.0001021 0.52 AML other m 2023-10-03T02:09:30.29
IV.PARC.HHE. ML:1.7 0.0000362 0.72 AML other m 2023-10-03T02:09:31.35
IV.MPPT.EHE. ML:1.7 0.00006285000000000001 0.58 AML other m 2023-10-03T02:09:32.45
IV.ATMI.HHN. ML:2.1 0.00010125000000000001 1.56 AML other m 2023-10-03T02:09:32.78
IV.MOCL.EHE. ML:1.8 0.00007960000000000001 1.32 AML other m 2023-10-03T02:09:33.98
IV.MPPT.EHN. ML:1.6 0.00005555 0.36 AML other m 2023-10-03T02:09:33.65
IV.PSL.EHE. ML:1.8 0.00007350000000000001 1.12 AML other m 2023-10-03T02:09:35.93
IV.CAFI.HHN. ML:1.5 0.00003665 0.64 AML other m 2023-10-03T02:09:36.24
IV.MOCL.EHN. ML:2.0 0.000121 0.48 AML other m 2023-10-03T02:09:36.50
IV.CRE.HHN. ML:1.8 0.0000772 1.38 AML other m 2023-10-03T02:09:37.17
IV.SEI.HHE. ML:2.0 0.0001005 0.4 AML other m 2023-10-03T02:09:38.33
IV.CRE.HHE. ML:1.8 0.0000626 0.48 AML other m 2023-10-03T02:09:39.35
IV.PSL.EHN. ML:1.7 0.000062525 0.66 AML other m 2023-10-03T02:09:39.74
IV.SFI.EHE. ML:1.7 0.000044899999999999994 0.8 AML other m 2023-10-03T02:09:39.53
IV.BDI.HHE. ML:1.7 0.0000482 0.76 AML other m 2023-10-03T02:09:39.57
IV.BDI.HHN. ML:1.7 0.00005355 1 AML other m 2023-10-03T02:09:41.48
IV.ATMI.HHE. ML:2.1 0.0000926 1.34 AML other m 2023-10-03T02:09:42.20
IV.FNVD.HHE. ML:1.8 0.000053400000000000004 1.08 AML other m 2023-10-03T02:09:44.40
GU.GSCL.HHN. ML:1.9 0.000053099999999999996 0.58 AML other m 2023-10-03T02:09:45.19
MN.VLC.HHN. ML:1.6 0.0000333 0.42 AML other m 2023-10-03T02:09:45.61
IV.LMD.HHN. ML:1.8 0.00004635 0.38 AML other m 2023-10-03T02:09:45.64
IV.LMD.HHE. ML:1.7 0.0000406 0.46 AML other m 2023-10-03T02:09:47.35
IV.SFI.EHN. ML:1.5 0.00003125 0.74 AML other m 2023-10-03T02:09:48.91
IV.PARC.HHN. ML:1.6 0.00003225 0.74 AML other m 2023-10-03T02:09:49.70
MN.VLC.HHE. ML:1.6 0.000033799999999999995 0.54 AML other m 2023-10-03T02:09:53.97
GU.GSCL.HHE. ML:1.9 0.00005385 0.82 AML other m 2023-10-03T02:09:55.39
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