Earthquake with magnitude of ML 1.1 on date 22-10-2018 and time 18:06:49 (UTC) in region 3 km NE Vicchio (FI)

A magnitude ML 1.1 earthquake occured in region: 3 km NE Vicchio (FI), on

  • 22-10-2018 18:06:49 (UTC)
  • 22-10-2018 20:06:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.95, 11.5 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
Vicchio FI 3 8044 8044
Dicomano FI 7 5515 13559
Borgo San Lorenzo FI 9 18211 31770
San Godenzo FI 10 1167 32937
Londa FI 12 1840 34777
Scarperia e San Piero FI 14 12217 46994
Rufina FI 14 7346 54340
Marradi FI 17 3139 57479
Vaglia FI 18 5073 62552
Palazzuolo sul Senio FI 19 1154 63706
Pontassieve FI 20 20603 84309
Pelago FI 20 7660 91969

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km NE of Firenze (382808 inhabitants)
33 Km E of Prato (191150 inhabitants)
33 Km NE of Scandicci (50609 inhabitants)
46 Km E of Pistoia (90315 inhabitants)
48 Km SW of Imola (69797 inhabitants)
48 Km SW of Faenza (58541 inhabitants)
53 Km SW of Forlì (117913 inhabitants)
62 Km S of Bologna (386663 inhabitants)
62 Km NW of Arezzo (99543 inhabitants)
63 Km W of Cesena (96758 inhabitants)
72 Km N of Siena (53903 inhabitants)
77 Km SW of Ravenna (159116 inhabitants)
81 Km E of Lucca (89046 inhabitants)
87 Km W of Rimini (147750 inhabitants)
90 Km SE of Modena (184973 inhabitants)
92 Km E of Pisa (89158 inhabitants)
99 Km S of Ferrara (133155 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 1.1 2018-10-22
18:06:49
43.95 11.5 10 2019-06-04
09:16:00
Bollettino Sismico Italiano INGV 62792861
Rev 100 ML 1.2 2018-10-22
18:06:50
43.95 11.5 8 2018-10-22
18:10:57
Sala Sismica INGV-Roma 62224591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-10-22 18:06:49 ± 0.06
Latitude 43.95 ± 0.00
Longitude 11.50 ± 0.00
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 62792861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 373
Semi-minor axis of confidence ellipse (meter) 235
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 185
Circular confidence region, given by single value of horizontal uncertainty (meter) 370
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 94
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) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.11331
Epicentral distance of station farthest from the epicenter (degree) 0.4038
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 62792861
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-11-05 08:27:10

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 62224591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-10-22 18:10:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SFI.EHZ. 2018-10-22T18:07:00.14 0.3 undecidable manual S 100 0.2572 50 -0.07 73
IV.MOCL.EHZ. 2018-10-22T18:06:59.43 0.3 undecidable manual S 283 0.2329 110 0.07 74
IV.CRMI.HNN. 2018-10-22T18:06:58.56 0.1 undecidable manual P 247 0.4038 50 0.24 92
IV.LMD.HHZ. 2018-10-22T18:06:58.11 0.3 undecidable manual S 50 0.197 113 0.02 75
IV.FNVD.HHZ. 2018-10-22T18:06:57.06 0.1 undecidable manual P 309 0.3444 50 -0.25 93
IV.MPPT.EHN. 2018-10-22T18:06:56.45 0.3 undecidable manual P 271 0.2923 50 0.04 73
IV.MOCL.EHZ. 2018-10-22T18:06:55.01 0.3 undecidable manual P 283 0.2329 110 -0.31 70
IV.RUFI.EHZ. 2018-10-22T18:06:55.14 0.1 undecidable manual S 175 0.1133 127 -0.15 99
IV.SFI.EHZ. 2018-10-22T18:06:55.87 0.3 undecidable manual P 100 0.2572 50 0.06 74
IV.LMD.HHZ. 2018-10-22T18:06:54.61 0.1 positive manual P 50 0.197 113 0.03 100
IV.SEI.HHZ. 2018-10-22T18:06:53.67 0.3 undecidable manual P 316 0.143 121 0.17 74
IV.RUFI.EHZ. 2018-10-22T18:06:53.16 0.3 undecidable manual P 175 0.1133 127 0.19 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SFI.EHN. ML:1.2 8.910961E-5 0.1792 AML other m 2018-10-22T18:07:02.50
IV.LMD.HHN. ML:1.4 0.00017799605 0.2048 AML other m 2018-10-22T18:06:58.32
IV.RUFI.EHN. ML:0.8 6.479302E-5 0.1408 AML other m 2018-10-22T18:06:55.42
IV.SEI.HHE. ML:1 0.00010618927 0.2304 AML other m 2018-10-22T18:06:58.28
IV.SEI.HHN. ML:1.1 0.00012744654 0.1536 AML other m 2018-10-22T18:06:58.09
IV.LMD.HHE. ML:1.2 9.952409E-5 0.0896 AML other m 2018-10-22T18:06:58.30
IV.SFI.EHE. ML:0.9 4.5408661E-5 0.1536 AML other m 2018-10-22T18:07:00.54
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