Earthquake with magnitude of ML 1.5 on date 16-03-2019 and time 00:30:16 (UTC) in region 3 km N Greve in Chianti (FI)

A magnitude ML 1.5 earthquake occured in region: 3 km N Greve in Chianti (FI), on

  • 16-03-2019 00:30:16 (UTC)
  • 16-03-2019 01:30:16 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.61, 11.32 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
Greve in Chianti FI 3 13862 13862
Impruneta FI 10 14615 28477
San Casciano in Val di Pesa FI 12 17062 45539
Figline e Incisa Valdarno FI 12 23505 69044
Tavarnelle Val di Pesa FI 13 7800 76844
Barberino Val d'Elsa FI 14 4386 81230
Radda in Chianti SI 14 1613 82843
Castellina in Chianti SI 15 2859 85702
Bagno a Ripoli FI 16 25611 111313
Cavriglia AR 16 9614 120927
Rignano sull'Arno FI 17 8651 129578
San Giovanni Valdarno AR 18 17018 146596
Gaiole in Chianti SI 18 2758 149354
Firenze FI 19 382808 532162
Castelfranco Piandiscò AR 19 9632 541794
Reggello FI 19 16290 558084

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km S of Firenze (382808 inhabitants)
20 Km SE of Scandicci (50609 inhabitants)
32 Km N of Siena (53903 inhabitants)
35 Km SE of Prato (191150 inhabitants)
48 Km W of Arezzo (99543 inhabitants)
49 Km SE of Pistoia (90315 inhabitants)
71 Km E of Lucca (89046 inhabitants)
75 Km E of Pisa (89158 inhabitants)
82 Km E of Livorno (159219 inhabitants)
88 Km SW of Faenza (58541 inhabitants)
89 Km SW of Imola (69797 inhabitants)
90 Km SW of Forlì (117913 inhabitants)
91 Km E of Viareggio (62467 inhabitants)
95 Km SW of Cesena (96758 inhabitants)
96 Km N of Grosseto (82087 inhabitants)
99 Km S of Bologna (386663 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.5 2019-03-16
00:30:16
43.61 11.32 10 2019-03-16
00:35:32
Sala Sismica INGV-Roma 66574031
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-16 00:30:16 ± 0.08
Latitude 43.61 ± 0.01
Longitude 11.32 ± 0.02
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66574031

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1498
Semi-minor axis of confidence ellipse (meter) 308
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 111
Circular confidence region, given by single value of horizontal uncertainty (meter) 1500
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 158
Number of associated phases, regardless of their use for origin computation 13
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.57826
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 6
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 66574031
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-16 00:35:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.TRIF.CHE. 2019-03-16T00:30:36.23 0.3 undecidable manual S 212 0.5783 50 0.16 67
IV.SEI.HHZ. 2019-03-16T00:30:32.15 0.6 undecidable manual S 4 0.4479 50 -0.07 47
IV.FROS.CHE. 2019-03-16T00:30:30.66 0.6 undecidable manual S 197 0.4146 50 -0.57 42
IV.TRIF.CHE. 2019-03-16T00:30:27.98 0.3 undecidable manual P 212 0.5783 50 0.29 65
IV.RUFI.EHZ. 2019-03-16T00:30:26.98 0.6 undecidable manual S 31 0.268 50 0.08 48
IV.MPPT.EHZ. 2019-03-16T00:30:26.19 3.0 undecidable manual P 0
IV.SEI.HHZ. 2019-03-16T00:30:25.43 0.6 negative manual P 4 0.4479 50 -0.04 47
IV.FROS.CHE. 2019-03-16T00:30:24.91 0.3 undecidable manual P 197 0.4146 50 0.02 71
IV.CSNT.HHZ. 2019-03-16T00:30:22.58 0.3 undecidable manual S 189 0.1358 123 0.1 74
IV.RUFI.EHZ. 2019-03-16T00:30:22.35 0.3 undecidable manual P 31 0.268 50 -0.04 73
IV.OSSC.HHZ. 2019-03-16T00:30:21.22 0.6 undecidable manual S 213 0.0989 132 -0.16 49
IV.OSSC.HHZ. 2019-03-16T00:30:19.15 0.1 negative manual P 213 0.0989 132 -0.05 100
IV.CSNT.HHZ. 2019-03-16T00:30:19.87 0.1 undecidable manual P 189 0.1358 123 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHE. ML:1.6 0.0004852232 0.12 AML other m 2019-03-16T00:30:21.46
IV.OSSC.HHN. ML:1.6 0.0004945649 0.22 AML other m 2019-03-16T00:30:21.48
IV.OSSC.HNE. ML:1.6 0.0004663674 0.2 AML other m 2019-03-16T00:30:21.38
IV.OSSC.HNN. ML:1.6 0.00047109125 0.12 AML other m 2019-03-16T00:30:21.46
IV.CSNT.HHE. ML:1.1 0.0001296433 0.16 AML other m 2019-03-16T00:30:23.25
IV.CSNT.HHN. ML:1.3 0.00019633925 0.18 AML other m 2019-03-16T00:30:23.05
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download