Earthquake with magnitude of ML 0.8 on date 22-07-2015 and time 11:38:20 (Italy) in region 9 km E Vaglia (FI)

A magnitude ML 0.8 earthquake occured in region: 9 km E Vaglia (FI), on

  • 22-07-2015 09:38:20 (UTC)
  • 22-07-2015 11:38:20 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.87, 11.39 at 10 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Rufina FI 9 7346 7346
Vaglia FI 9 5073 12419
Vicchio FI 10 8044 20463
Borgo San Lorenzo FI 10 18211 38674
Fiesole FI 10 13969 52643
Pontassieve FI 11 20603 73246
Dicomano FI 11 5515 78761
Scarperia e San Piero FI 12 12217 90978
Bagno a Ripoli FI 14 25611 116589
Londa FI 15 1840 118429
Pelago FI 15 7660 126089
Firenze FI 15 382808 508897
Sesto Fiorentino FI 16 48958 557855
Rignano sull'Arno FI 17 8651 566506
Calenzano FI 18 17489 583995
Barberino di Mugello FI 19 10836 594831
San Godenzo FI 20 1167 595998

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km NE of Firenze (382808 inhabitants)
21 Km NE of Scandicci (50609 inhabitants)
23 Km E of Prato (191150 inhabitants)
38 Km E of Pistoia (90315 inhabitants)
60 Km SW of Imola (69797 inhabitants)
60 Km NW of Arezzo (99543 inhabitants)
61 Km SW of Faenza (58541 inhabitants)
61 Km N of Siena (53903 inhabitants)
65 Km SW of Forlì (117913 inhabitants)
70 Km S of Bologna (386663 inhabitants)
71 Km E of Lucca (89046 inhabitants)
75 Km W of Cesena (96758 inhabitants)
81 Km E of Pisa (89158 inhabitants)
89 Km SW of Ravenna (159116 inhabitants)
91 Km E of Viareggio (62467 inhabitants)
94 Km E of Livorno (159219 inhabitants)
94 Km SE of Modena (184973 inhabitants)
97 Km W of Rimini (147750 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 0.8 2015-07-22
09:38:20
43.87 11.39 10 2016-01-08
08:53:02
Bollettino Sismico Italiano INGV 21381761
Rev 100 ML 0.8 2015-07-22
09:38:20
43.87 11.38 9 2015-07-22
09:44:51
Sala Sismica INGV-Roma 20437041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2015-07-22 09:38:20 ± 0.1
Latitude 43.87 ± 0.01
Longitude 11.39 ± 0.01
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 21381761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 680
Semi-minor axis of confidence ellipse (meter) 535
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 1
Circular confidence region, given by single value of horizontal uncertainty (meter) 680
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 146
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 10
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
Epicentral distance of station farthest from the epicenter (degree) 0.31926
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 5
Magnitudes information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 21381761
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-09-14 12:32:21

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 20437041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2015-07-22 09:44:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
MN.CEL.HHZ. 2015-07-22T09:40:03.05 3.0 negative manual Pg 24.129999 0
IV.CAGR.HHZ. 2015-07-22T09:39:42.98 3.0 negative manual Pn 3.93 0
MN.TUE.HHZ. 2015-07-22T09:39:40.99 3.0 undecidable manual Sn 0.27 0
IV.VENT.EHZ. 2015-07-22T09:39:28.99 3.0 undecidable manual Sn -2.54 0
IV.LIK.EHZ.01 2015-07-22T09:39:19.99 3.0 undecidable manual Sn 0.1 0
IV.RDP.HHZ. 2015-07-22T09:39:03.99 3.0 undecidable manual Sn -0.36 0
IV.CAPR.HNZ. 2015-07-22T09:38:49.22 3.0 undecidable manual Pn 1.02 0
IV.PLMA.HHZ. 2015-07-22T09:38:45.99 3.0 undecidable manual Sg 0.17 0
IV.MTCR.EHE. 2015-07-22T09:38:32.16 0.3 undecidable manual S 300 0.3193 50 -0.13 73
IV.LMD.HHZ. 2015-07-22T09:38:32.23 0.3 undecidable manual S 48 0.3094 50 0.21 72
IV.CRMI.HHZ. 2015-07-22T09:38:31.77 0.1 undecidable manual S 256 0.3031 50 -0.06 99
IV.APEC.HHZ. 2015-07-22T09:38:28.62 3.0 undecidable manual P 0.37 0
IV.MTCR.EHE. 2015-07-22T09:38:27.02 0.3 undecidable manual P 300 0.3193 50 -0.11 73
IV.SEI.HHZ. 2015-07-22T09:38:27.83 0.3 undecidable manual S 354 0.1853 115 -0.15 74
IV.CRMI.HHZ. 2015-07-22T09:38:27.06 0.1 undecidable manual P 256 0.3031 50 0.19 96
IV.LMD.HHZ. 2015-07-22T09:38:26.65 0.3 undecidable manual P 48 0.3094 50 -0.33 70
IV.SEI.HHZ. 2015-07-22T09:38:24.91 0.1 undecidable manual P 354 0.1853 115 0.26 97
IV.RUFI.EHZ. 2015-07-22T09:38:24.73 0.3 undecidable manual S 110 0.0935 133 -0.29 74
IV.RUFI.EHZ. 2015-07-22T09:38:23.14 0.1 undecidable manual P 110 0.0935 133 0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:0.7 1.88E-5 0.14 AML other m 2015-07-22T09:38:32.81
IV.LMD.HHE. ML:0.6 1.265E-5 1.54 AML other m 2015-07-22T09:38:32.67
IV.SEI.HHE. ML:1 6.575E-5 0.96 AML other m 2015-07-22T09:38:28.01
IV.SEI.HHN. ML:1 7.58E-5 1.34 AML other m 2015-07-22T09:38:28.63
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