Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 15-01-2020 and time 23:41:05 (UTC) in region 6 km SW Pomarance (PI)

A magnitude ML 1.2 earthquake occured in region: 6 km SW Pomarance (PI), on

  • 15-01-2020 23:41:05 (UTC)
  • 16-01-2020 00:41:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.2490, 10.8390 at 7 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.

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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
Pomarance PI 7 5897 5897
Castelnuovo di Val di Cecina PI 7 2231 8128
Monterotondo Marittimo GR 12 1371 9499
Monteverdi Marittimo PI 13 758 10257
Radicondoli SI 17 914 11171
Volterra PI 17 10519 21690
Montecatini Val di Cecina PI 18 1749 23439
Guardistallo PI 18 1234 24673
Casale Marittimo PI 19 1122 25795
Montescudaio PI 19 2144 27939
Montieri GR 19 1204 29143
Casole d'Elsa SI 20 3897 33040
Bibbona LI 20 3175 36215

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Siena (53903 inhabitants)
55 Km SE of Livorno (159219 inhabitants)
59 Km NW of Grosseto (82087 inhabitants)
63 Km SE of Pisa (89158 inhabitants)
63 Km SW of Scandicci (50609 inhabitants)
67 Km SW of Firenze (382808 inhabitants)
72 Km SE of Lucca (89046 inhabitants)
73 Km S of Prato (191150 inhabitants)
77 Km S of Pistoia (90315 inhabitants)
84 Km SE of Viareggio (62467 inhabitants)
88 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 1.2 2020-01-15
23:41:05		 43.2488 10.8393 7 2020-07-18
21:08:29		 Bollettino Sismico Italiano INGV 77705801
Reviewed
Rev100 		ML 1.2 2020-01-15
23:41:05		 43.2452 10.8343 8 2020-01-15
23:47:23		 Sala Sismica INGV-Roma 75571881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-15 23:41:05 ± 0.11
Latitude 43.2488 ± 0.0063
Longitude 10.8393 ± 0.0074
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 77705801

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 594
Semi-minor axis of confidence ellipse (meter) 517
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 206
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 73
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.13400
Epicentral distance of station farthest from the epicenter (degree) 0.68079
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 14
Type of magnitude ML
Reference to an origin 77705801
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-30 16:19:53

ML:1.2

Field Value
Value 1.2
Uncertainty 0.4
Num. used stations 14
Type of magnitude ML
Reference to an origin 75571881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-15 23:47:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CASP.HHE. 2020-01-15T23:41:21.71 0.6 undecidable manual S 178 50.8158 50 -0.71 41
IV.CSNT.HHZ. 2020-01-15T23:41:20.07 0.6 undecidable manual S 55 44.0226 50 -0.53 44
IV.OSSC.HHZ. 2020-01-15T23:41:20.59 0.6 undecidable manual S 47 44.7219 50 -0.19 48
IV.CELB.HHZ. 2020-01-15T23:41:19.29 0.1 undecidable manual P 223 75.5688 50 0.24 89
IV.RIBO.EHE.01 2020-01-15T23:41:17.86 0.6 undecidable manual S 153 37.2294 100 -0.73 41
IV.PII.HHE. 2020-01-15T23:41:16.26 0.3 undecidable manual P 334 58.2972 50 -0.13 71
IV.CASP.HHE. 2020-01-15T23:41:15.85 0.3 undecidable manual P 178 50.8158 50 0.61 64
IV.CSNT.HHZ. 2020-01-15T23:41:14.25 0.1 undecidable manual P 55 44.0226 50 0.05 99
IV.OSSC.HHZ. 2020-01-15T23:41:14.44 0.1 undecidable manual P 47 44.7219 50 0.14 97
IV.FROS.CHZ. 2020-01-15T23:41:14.57 0.3 undecidable manual S 100 25.9518 105 -0.2 74
IV.RIBO.EHE.01 2020-01-15T23:41:13.09 0.3 undecidable manual P 153 37.2294 100 0.06 75
IV.TRIF.CHZ. 2020-01-15T23:41:11.20 0.3 undecidable manual S 161 15.7731 114 -0.2 75
IV.FROS.CHZ. 2020-01-15T23:41:11.19 0.1 undecidable manual P 100 25.9518 105 0.36 95
IV.MAGO.CHZ. 2020-01-15T23:41:10.70 0.1 undecidable manual S 281 14.874 115 -0.43 96
IV.TRIF.CHZ. 2020-01-15T23:41:09.22 0.1 undecidable manual P 161 15.7731 114 0.34 98
IV.MAGO.CHZ. 2020-01-15T23:41:08.96 0.1 positive manual P 281 14.874 115 0.23 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MAGO.CHN. ML:2.0 0.0009653368 0.0896 AML other m 2020-01-15T23:41:10.84
IV.MAGO.CHE. ML:1.7 0.00053674975 0.1536 AML other m 2020-01-15T23:41:10.87
IV.TRIF.CHN. ML:1.4 0.0002453401 0.1408 AML other m 2020-01-15T23:41:11.94
IV.TRIF.CHE. ML:1.5 0.0003199402 1.8976 AML other m 2020-01-15T23:41:12.97
IV.FROS.CHE. ML:0.8 0.000033847354999999994 0.0768 AML other m 2020-01-15T23:41:14.98
IV.FROS.CHN. ML:0.9 0.000047170305 0.1024 AML other m 2020-01-15T23:41:15.07
IV.OSSC.HNN. ML:1.6 0.00013163867500000002 0.4608 AML other m 2020-01-15T23:41:19.31
IV.OSSC.HHN. ML:0.8 0.000019005639999999996 0.8448 AML other m 2020-01-15T23:41:20.47
IV.OSSC.HNE. ML:1.7 0.00014940785000000002 1.1936 AML other m 2020-01-15T23:41:26.01
IV.OSSC.HHE. ML:0.7 0.000017224735 0.5152 AML other m 2020-01-15T23:41:27.75
IV.CSNT.HHE. ML:0.7 0.000013108431999999999 0.5152 AML other m 2020-01-15T23:41:29.46
IV.CSNT.HHN. ML:0.7 0.000013133580000000001 1.536 AML other m 2020-01-15T23:41:29.91
IV.CELB.HHN. ML:1.0 0.0000152980245 0.064 AML other m 2020-01-15T23:41:31.60
IV.CELB.HHE. ML:1.4 0.00003756824 0.064 AML other m 2020-01-15T23:41:33.06
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