Earthquake with magnitude of ML 0.9 on date 18-01-2020 and time 23:11:27 (UTC) in region 5 km NW Montieri (GR)

A magnitude ML 0.9 earthquake occured in region: 5 km NW Montieri (GR), on

  • 18-01-2020 23:11:27 (UTC)
  • 19-01-2020 00:11:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.1680, 10.9860 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Montieri GR 5 1204 1204
Castelnuovo di Val di Cecina PI 8 2231 3435
Chiusdino SI 8 1903 5338
Monterotondo Marittimo GR 11 1371 6709
Radicondoli SI 11 914 7623
Massa Marittima GR 15 8375 15998
Monticiano SI 16 1571 17569
Pomarance PI 17 5897 23466
Casole d'Elsa SI 20 3897 27363

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SW of Siena (53903 inhabitants)
46 Km N of Grosseto (82087 inhabitants)
68 Km S of Scandicci (50609 inhabitants)
70 Km SE of Livorno (159219 inhabitants)
70 Km SW of Firenze (382808 inhabitants)
77 Km SE of Pisa (89158 inhabitants)
80 Km W of Arezzo (99543 inhabitants)
80 Km S of Prato (191150 inhabitants)
85 Km SE of Lucca (89046 inhabitants)
85 Km S of Pistoia (90315 inhabitants)
98 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 0.9 2020-01-18
23:11:27
43.1682 10.9863 10 2020-01-18
23:17:25
Sala Sismica INGV-Roma 75637371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-18 23:11:27 ± 0.12
Latitude 43.1682 ± 0.0072
Longitude 10.9863 ± 0.0099
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 75637371

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 905
Semi-minor axis of confidence ellipse (meter) 689
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 145
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) 102
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.08094
Epicentral distance of station farthest from the epicenter (degree) 0.47754
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.2
Num. used stations 5
Type of magnitude ML
Reference to an origin 75637371
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-18 23:17:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARCI.HNN. 2020-01-18T23:11:44.26 0.6 undecidable manual S 131 53.0025 50 -0.16 46
IV.CASP.HHZ. 2020-01-18T23:11:41.42 0.1 undecidable manual S 193 43.0236 50 -0.34 89
IV.CSNT.HHE. 2020-01-18T23:11:40.96 0.3 undecidable manual S 36 41.8248 50 -0.48 65
IV.ARCI.HNN. 2020-01-18T23:11:37.61 0.1 undecidable manual P 131 53.0025 50 0.28 89
IV.MAGO.CHZ. 2020-01-18T23:11:37.67 0.3 undecidable manual S 294 28.9488 50 -0.35 68
IV.CASP.HHZ. 2020-01-18T23:11:36.33 0.6 undecidable manual P 193 43.0236 50 0.53 43
IV.CSNT.HHE. 2020-01-18T23:11:36.01 0.1 undecidable manual P 36 41.8248 50 0.4 88
IV.FROS.CHZ. 2020-01-18T23:11:33.40 0.6 undecidable manual S 71 14.4744 125 -0.42 46
IV.MAGO.CHZ. 2020-01-18T23:11:33.93 0.1 undecidable manual P 294 28.9488 50 0.29 92
IV.TRIF.CHZ. 2020-01-18T23:11:32.07 0.3 undecidable manual S 229 8.9799 139 -0.32 71
IV.FROS.CHZ. 2020-01-18T23:11:31.24 0.1 negative manual P 71 14.4744 125 0.03 100
IV.TRIF.CHZ. 2020-01-18T23:11:30.59 0.1 negative manual P 229 8.9799 139 0.21 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.TRIF.CHE. ML:1.1 0.000175 0.24 AML other m 2020-01-18T23:11:32.67
IV.TRIF.CHN. ML:1.0 0.00013450000000000002 0.82 AML other m 2020-01-18T23:11:32.38
IV.FROS.CHE. ML:0.5 0.00003076176 0.0896 AML other m 2020-01-18T23:11:33.68
IV.MAGO.CHE. ML:1.0 0.000054905175 3.4176 AML other m 2020-01-18T23:11:38.64
IV.MAGO.CHN. ML:0.8 0.000032382099999999996 0.576 AML other m 2020-01-18T23:11:40.87
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