Earthquake with magnitude of ML 1.1 on date 03-02-2020 and time 14:15:38 (UTC) in region 5 km SW Pomarance (PI)

A magnitude ML 1.1 earthquake occured in region: 5 km SW Pomarance (PI), on

  • 03-02-2020 14:15:38 (UTC)
  • 03-02-2020 15:15:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2610, 10.8500 at 6 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
Pomarance PI 5 5897 5897
Castelnuovo di Val di Cecina PI 8 2231 8128
Monterotondo Marittimo GR 13 1371 9499
Monteverdi Marittimo PI 14 758 10257
Radicondoli SI 16 914 11171
Volterra PI 16 10519 21690
Montecatini Val di Cecina PI 17 1749 23439
Casole d'Elsa SI 18 3897 27336
Guardistallo PI 18 1234 28570
Casale Marittimo PI 19 1122 29692
Montescudaio PI 19 2144 31836
Montieri GR 20 1204 33040

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Siena (53903 inhabitants)
54 Km SE of Livorno (159219 inhabitants)
60 Km NW of Grosseto (82087 inhabitants)
62 Km SW of Scandicci (50609 inhabitants)
62 Km SE of Pisa (89158 inhabitants)
66 Km SW of Firenze (382808 inhabitants)
71 Km SE of Lucca (89046 inhabitants)
72 Km S of Prato (191150 inhabitants)
75 Km S of Pistoia (90315 inhabitants)
83 Km SE of Viareggio (62467 inhabitants)
87 Km W of Arezzo (99543 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
ML 1.1 2020-02-03
14:15:38
43.2608 10.8497 6 2020-07-18
21:08:27
Bollettino Sismico Italiano INGV 77436671
Reviewed
Rev100
ML 1.4 2020-02-03
14:15:37
43.2372 10.8263 11 2020-02-03
14:33:53
Sala Sismica INGV-Roma 76165361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-03 14:15:38 ± 0.15
Latitude 43.2608 ± 0.0108
Longitude 10.8497 ± 0.0086
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77436671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 962
Semi-minor axis of confidence ellipse (meter) 784
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 12
Circular confidence region, given by single value of horizontal uncertainty (meter) 960.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 133
Number of associated phases, regardless of their use for origin computation 8
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.14029
Epicentral distance of station farthest from the epicenter (degree) 0.96677
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:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 77436671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-24 15:42:55

ML:1.4

Field Value
Value 1.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 76165361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-03 14:33:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2020-02-03T14:15:56.31 0.3 undecidable manual P 48 107.3148 50 -0.4 59
IV.CELB.HHE. 2020-02-03T14:15:52.22 0.3 undecidable manual P 222 77.0673 50 0.18 66
IV.FROS.CHZ. 2020-02-03T14:15:47.01 0.6 undecidable manual S 103 25.4523 103 -0.11 49
IV.FROS.CHZ. 2020-02-03T14:15:43.58 0.1 undecidable manual P 103 25.4523 103 0.28 95
IV.TRIF.CHZ. 2020-02-03T14:15:43.81 0.6 undecidable manual S 165 16.7721 109 -0.42 47
IV.MAGO.CHZ. 2020-02-03T14:15:43.51 0.6 undecidable manual S 275 15.5733 111 -0.32 48
IV.MAGO.CHZ. 2020-02-03T14:15:41.57 0.1 positive manual P 275 15.5733 111 0.17 98
IV.TRIF.CHZ. 2020-02-03T14:15:41.71 0.1 undecidable manual P 165 16.7721 109 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MAGO.CHN. ML:1.3 0.0002115 0.12 AML other m 2020-02-03T14:15:43.54
IV.MAGO.CHE. ML:1.3 0.00021150000000000002 0.08 AML other m 2020-02-03T14:15:43.64
IV.TRIF.CHN. ML:1.0 0.0001105 0.86 AML other m 2020-02-03T14:15:44.14
IV.TRIF.CHE. ML:1.2 0.0001485 1.54 AML other m 2020-02-03T14:15:44.08
IV.FROS.CHE. ML:0.6 0.000024488615 1.1648 AML other m 2020-02-03T14:15:47.21
IV.FROS.CHN. ML:0.8 0.000032683000000000005 1.4528 AML other m 2020-02-03T14:15:46.94
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