Earthquake (quarry blast) with magnitude of ML 0.9 on date 12-06-2017 and time 09:41:31 (Italy) in region 3 km N Vaglia (FI)

A magnitude ML 0.9 (quarry blast) earthquake occured in region: 3 km N Vaglia (FI), on

  • 12-06-2017 07:41:31 (UTC)
  • 12-06-2017 09:41:31 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.93, 11.27 at 0 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

Event type: quarry blast.

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
Vaglia FI 3 5073 5073
Scarperia e San Piero FI 5 12217 17290
Barberino di Mugello FI 8 10836 28126
Borgo San Lorenzo FI 10 18211 46337
Calenzano FI 11 17489 63826
Sesto Fiorentino FI 13 48958 112784
Vaiano PO 13 9895 122679
Fiesole FI 14 13969 136648
Prato PO 15 191150 327798
Vicchio FI 16 8044 335842
Vernio PO 16 6060 341902
Campi Bisenzio FI 16 46166 388068
Cantagallo PO 17 3105 391173
Firenze FI 18 382808 773981
Montemurlo PO 19 18456 792437

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km E of Prato (191150 inhabitants)
18 Km N of Firenze (382808 inhabitants)
21 Km NE of Scandicci (50609 inhabitants)
28 Km E of Pistoia (90315 inhabitants)
59 Km SW of Imola (69797 inhabitants)
63 Km E of Lucca (89046 inhabitants)
63 Km SW of Faenza (58541 inhabitants)
63 Km S of Bologna (386663 inhabitants)
68 Km N of Siena (53903 inhabitants)
69 Km W of Forlì (117913 inhabitants)
71 Km NW of Arezzo (99543 inhabitants)
74 Km E of Pisa (89158 inhabitants)
81 Km W of Cesena (96758 inhabitants)
82 Km E of Viareggio (62467 inhabitants)
84 Km SE of Modena (184973 inhabitants)
88 Km E of Livorno (159219 inhabitants)
91 Km E of Massa (69479 inhabitants)
92 Km SW of Ravenna (159116 inhabitants)
95 Km E of Carrara (63133 inhabitants)
99 Km SE of Reggio nell'Emilia (171345 inhabitants)
100 Km SE of Carpi (70699 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
Rev 1000 ML 0.9 2017-06-12
07:41:31
43.93 11.27 1 2018-07-06
11:13:33
Bollettino Sismico Italiano INGV 51063181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-06-12 07:41:31 ± 0.15
Latitude 43.93 ± 0.01
Longitude 11.27 ± 0.01
Depth (km) 1 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type quarry blast
Origin ID 51063181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1390
Semi-minor axis of confidence ellipse (meter) 760
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 18
Circular confidence region, given by single value of horizontal uncertainty (meter) 1390
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 162
Number of associated phases, regardless of their use for origin computation 5
Number of defining phases 5
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.09803
Epicentral distance of station farthest from the epicenter (degree) 0.21674
Number of stations at which the event was observed 5
Number of stations from which data was used for origin computation 5
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.1
Num. used stations 6
Type of magnitude ML
Reference to an origin 51063181
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-11-23 10:17:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MTCR.EHZ. 2017-06-12T07:41:36.01 0.1 undecidable manual P 296 0.2167 91 -0.26 93
IV.RUFI.EHE. 2017-06-12T07:41:35.76 0.3 undecidable manual P 119 0.1952 91 -0.04 73
IV.MPPT.EHZ. 2017-06-12T07:41:34.65 0.1 undecidable manual P 281 0.1331 92 0.22 95
IV.SEI.HHZ. 2017-06-12T07:41:34.56 0.3 undecidable manual P 27 0.1367 92 0.07 74
IV.MOCL.EHZ. 2017-06-12T07:41:33.65 0.1 undecidable manual P 318 0.098 93 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOCL.EHN. ML:0.8 9.79E-5 0.92 AML other m 2017-06-12T07:41:38.26
IV.SEI.HHE. ML:0.8 7.96E-5 0.38 AML other m 2017-06-12T07:41:38.12
IV.SEI.HHN. ML:0.9 8.405E-5 0.48 AML other m 2017-06-12T07:41:38.99
IV.MOCL.EHE. ML:1 0.000161 0.92 AML other m 2017-06-12T07:41:39.23
IV.MPPT.EHN. ML:0.8 7.725E-5 1.14 AML other m 2017-06-12T07:41:43.70
IV.MPPT.EHE. ML:1 0.000129 1.04 AML other m 2017-06-12T07:41:43.19
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