Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 24-11-2020 and time 02:19:07 (Italy) in region 3 km NE Castelnuovo di Val di Cecina (PI)

A magnitude ML 0.7 earthquake occured in region: 3 km NE Castelnuovo di Val di Cecina (PI), on

  • 24-11-2020 01:19:07 (UTC)
  • 24-11-2020 02:19:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2260, 10.9380 at 9 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
Castelnuovo di Val di Cecina PI 3 2231 2231
Radicondoli SI 9 914 3145
Pomarance PI 10 5897 9042
Monterotondo Marittimo GR 11 1371 10413
Montieri GR 12 1204 11617
Chiusdino SI 15 1903 13520
Casole d'Elsa SI 16 3897 17417
Monteverdi Marittimo PI 19 758 18175
Massa Marittima GR 20 8375 26550

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km W of Siena (53903 inhabitants)
54 Km N of Grosseto (82087 inhabitants)
63 Km SW of Scandicci (50609 inhabitants)
63 Km SE of Livorno (159219 inhabitants)
66 Km SW of Firenze (382808 inhabitants)
70 Km SE of Pisa (89158 inhabitants)
74 Km S of Prato (191150 inhabitants)
77 Km SE of Lucca (89046 inhabitants)
79 Km S of Pistoia (90315 inhabitants)
81 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 0.7 2020-11-24
01:19:07		 43.2255 10.9383 9 2020-11-24
01:25:35		 Sala Sismica INGV-Roma 84973041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-24 01:19:07 ± 0.16
Latitude 43.2255 ± 0.0081
Longitude 10.9383 ± 0.0111
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 84973041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 927
Semi-minor axis of confidence ellipse (meter) 633
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 307
Circular confidence region, given by single value of horizontal uncertainty (meter) 930.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
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) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.11331
Epicentral distance of station farthest from the epicenter (degree) 0.57017
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:0.7

Field Value
Value 0.7
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 84973041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-11-24 01:25:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CASP.HHZ. 2020-11-24T01:19:23.25 0.1 undecidable manual S 187 48.618 50 -0.1 97
IV.CSNT.HHE. 2020-11-24T01:19:20.23 0.3 undecidable manual S 46 39.5271 50 -0.7 63
IV.CRMI.HHN. 2020-11-24T01:19:19.31 0.3 undecidable manual P 3 63.2922 50 0.4 66
IV.RIBO.EHZ.01 2020-11-24T01:19:18.39 0.1 undecidable manual S 164 31.9458 50 -0.51 91
IV.CASP.HHZ. 2020-11-24T01:19:17.13 0.1 undecidable manual P 187 48.618 50 0.49 89
IV.CSNT.HHE. 2020-11-24T01:19:15.51 0.3 undecidable manual P 46 39.5271 50 0.27 71
IV.MAGO.CHZ. 2020-11-24T01:19:15.37 0.3 undecidable manual S 283 23.2545 111 -0.76 63
IV.RIBO.EHZ.01 2020-11-24T01:19:14.35 0.1 undecidable manual P 164 31.9458 50 0.28 96
IV.FROS.CHZ. 2020-11-24T01:19:14.03 0.1 undecidable manual S 96 17.6712 117 -0.33 98
IV.TRIF.CHZ. 2020-11-24T01:19:12.59 0.1 undecidable manual S 193 12.5763 126 -0.26 100
IV.MAGO.CHZ. 2020-11-24T01:19:12.66 0.3 undecidable manual P 283 23.2545 111 0.19 75
IV.FROS.CHZ. 2020-11-24T01:19:11.81 0.1 negative manual P 96 17.6712 117 0.36 97
IV.TRIF.CHZ. 2020-11-24T01:19:10.99 0.1 positive manual P 193 12.5763 126 0.42 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHE. ML:1.2 0.00019578475000000002 0.12 AML other m 2020-11-24T01:19:13.54
IV.TRIF.CHN. ML:1.2 0.0001768343 0.152 AML other m 2020-11-24T01:19:13.21
IV.FROS.CHE. ML:0.5 0.000024038255 1.248 AML other m 2020-11-24T01:19:14.83
IV.FROS.CHN. ML:0.2 0.000017042327999999998 0.928 AML other m 2020-11-24T01:19:14.56
IV.MAGO.CHE. ML:0.8 0.000041759655 0.088 AML other m 2020-11-24T01:19:15.95
IV.MAGO.CHN. ML:0.6 0.000026332584999999998 0.08 AML other m 2020-11-24T01:19:16.23
IV.RIBO.EHE.01 ML:0.8 0.000028093871 0.18 AML other m 2020-11-24T01:19:19.15
IV.CASP.HHN. ML:0.6 0.0000089557595 0.76 AML other m 2020-11-24T01:19:23.89
IV.CASP.HHE. ML:0.6 0.000009813717 0.6 AML other m 2020-11-24T01:19:23.63
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