Earthquake with magnitude of ML 0.4 on date 12-04-2020 and time 05:40:13 (Italy) in region 3 km W Pomarance (PI)

A magnitude ML 0.4 earthquake occured in region: 3 km W Pomarance (PI), on

  • 12-04-2020 03:40:13 (UTC)
  • 12-04-2020 05:40:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.2900, 10.8430 at 4 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
Pomarance PI 3 5897 5897
Castelnuovo di Val di Cecina PI 11 2231 8128
Volterra PI 13 10519 18647
Montecatini Val di Cecina PI 14 1749 20396
Monterotondo Marittimo GR 16 1371 21767
Monteverdi Marittimo PI 16 758 22525
Radicondoli SI 16 914 23439
Guardistallo PI 17 1234 24673
Casole d'Elsa SI 17 3897 28570
Montescudaio PI 18 2144 30714
Casale Marittimo PI 18 1122 31836
Bibbona LI 20 3175 35011

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km W of Siena (53903 inhabitants)
52 Km SE of Livorno (159219 inhabitants)
59 Km SW of Scandicci (50609 inhabitants)
59 Km SE of Pisa (89158 inhabitants)
63 Km NW of Grosseto (82087 inhabitants)
63 Km SW of Firenze (382808 inhabitants)
68 Km SE of Lucca (89046 inhabitants)
69 Km SW of Prato (191150 inhabitants)
72 Km S of Pistoia (90315 inhabitants)
80 Km SE of Viareggio (62467 inhabitants)
86 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
Reviewed
Rev100
ML 0.4 2020-04-12
03:40:13
43.2902 10.8433 4 2020-04-12
03:50:15
Sala Sismica INGV-Roma 78132141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-12 03:40:13 ± 0.11
Latitude 43.2902 ± 0.0072
Longitude 10.8433 ± 0.0062
Depth (km) 4 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78132141

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 583
Semi-minor axis of confidence ellipse (meter) 567
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 184
Circular confidence region, given by single value of horizontal uncertainty (meter) 580.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 16
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.51441
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 78132141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-12 03:50:15
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MONC.HHZ. 2020-04-12T03:41:36.30 3.0 undecidable manual Sn 2.72 0
OT.OT13.EHZ. 2020-04-12T03:41:28.06 3.0 negative manual Pg 8.54 0
IV.ROSPO.HHZ. 2020-04-12T03:41:05.62 3.0 undecidable manual Pn -0.23 0
IV.MILN.HHZ. 2020-04-12T03:40:57.17 3.0 undecidable manual Pg 2.48 0
GU.GSCL.HHZ. 2020-04-12T03:40:48.89 3.0 undecidable manual S -2.03 0
IV.BRSN.HNZ. 2020-04-12T03:40:38.12 3.0 undecidable manual Pg -1.17 0
IV.CRMI.HNN. 2020-04-12T03:40:32.79 0.6 undecidable manual S 11 57.0984 50 -0.16 47
IV.CSNT.HHZ. 2020-04-12T03:40:27.69 0.3 undecidable manual S 60 41.3253 95 -0.27 71
IV.CRMI.HNN. 2020-04-12T03:40:24.80 0.6 undecidable manual P 11 57.0984 50 0.04 48
IV.FROS.CHZ. 2020-04-12T03:40:22.85 0.3 undecidable manual S 109 26.751 97 -0.09 75
IV.CSNT.HHZ. 2020-04-12T03:40:21.95 0.3 undecidable manual P 60 41.3253 95 0.08 74
IV.TRIF.CHZ. 2020-04-12T03:40:20.26 0.3 undecidable manual S 166 20.0688 100 -0.36 72
IV.FROS.CHZ. 2020-04-12T03:40:19.34 0.1 positive manual P 109 26.751 97 0.36 95
IV.MAGO.CHZ. 2020-04-12T03:40:18.69 0.3 undecidable manual S 263 15.0738 103 -0.25 74
IV.TRIF.CHZ. 2020-04-12T03:40:17.95 0.6 undecidable manual P 166 20.0688 100 0.32 48
IV.MAGO.CHZ. 2020-04-12T03:40:16.87 0.1 positive manual P 263 15.0738 103 0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MAGO.CHE. ML:0.9 0.00008575685999999999 0.088 AML other m 2020-04-12T03:40:18.84
IV.MAGO.CHN. ML:0.6 0.000051660454999999995 0.104 AML other m 2020-04-12T03:40:17.73
IV.FROS.CHE. ML:0.2 0.000009697394 0.096 AML other m 2020-04-12T03:40:23.14
IV.FROS.CHN. ML:0.4 0.000016097340000000002 0.328 AML other m 2020-04-12T03:40:24.73
IV.CSNT.HHE. ML:0.2 0.000005558265000000001 0.12 AML other m 2020-04-12T03:40:27.88
IV.CSNT.HHN. ML:0.2 0.000005676837 0.16 AML other m 2020-04-12T03:40:27.42
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