Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.9 on date 10-08-2019 and time 02:54:09 (Italy) in region 4 km N Borgo San Lorenzo (FI)

A magnitude ML 0.9 earthquake occured in region: 4 km N Borgo San Lorenzo (FI), on

  • 10-08-2019 00:54:09 (UTC)
  • 10-08-2019 02:54:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9940, 11.4020 at 9 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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Borgo San Lorenzo FI 4 18211 18211
Scarperia e San Piero FI 7 12217 30428
Vicchio FI 8 8044 38472
Barberino di Mugello FI 13 10836 49308
Vaglia FI 14 5073 54381
Firenzuola FI 14 4726 59107
Dicomano FI 15 5515 64622
Palazzuolo sul Senio FI 18 1154 65776
San Godenzo FI 19 1167 66943
Marradi FI 19 3139 70082
Rufina FI 20 7346 77428
Londa FI 20 1840 79268

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km E of Prato (191150 inhabitants)
28 Km NE of Firenze (382808 inhabitants)
32 Km NE of Scandicci (50609 inhabitants)
39 Km E of Pistoia (90315 inhabitants)
47 Km SW of Imola (69797 inhabitants)
50 Km SW of Faenza (58541 inhabitants)
56 Km S of Bologna (386663 inhabitants)
57 Km W of Forlì (117913 inhabitants)
69 Km W of Cesena (96758 inhabitants)
70 Km NW of Arezzo (99543 inhabitants)
74 Km E of Lucca (89046 inhabitants)
75 Km N of Siena (53903 inhabitants)
79 Km SW of Ravenna (159116 inhabitants)
82 Km SE of Modena (184973 inhabitants)
86 Km E of Pisa (89158 inhabitants)
93 Km E of Viareggio (62467 inhabitants)
93 Km W of Rimini (147750 inhabitants)
95 Km S of Ferrara (133155 inhabitants)
97 Km SE of Carpi (70699 inhabitants)
99 Km SE of Reggio nell'Emilia (171345 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
Bulletin
Rev1000 		ML 0.9 2019-08-10
00:54:09		 43.9942 11.4022 9 2019-11-13
14:31:08		 Bollettino Sismico Italiano INGV 73572321
Reviewed
Rev100 		ML 1.1 2019-08-10
00:54:04		 44.021 11.3842 20 2019-08-10
01:00:26		 Sala Sismica INGV-Roma 71322541
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-10 00:54:09 ± 0.04
Latitude 43.9942 ± 0.0036
Longitude 11.4022 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73572321

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 360
Semi-minor axis of confidence ellipse (meter) 190
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 349
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.13
Epicentral distance of station closest to the epicenter (degree) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.36333
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 73572321
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-11-01 13:22:34

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 71322541
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-10 01:00:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SFI.EHZ. 2019-08-10T00:54:22.01 0.6 undecidable manual S 105 36.8298 50 0.05 49
IV.ASQU.HHZ. 2019-08-10T00:54:22.28 0.6 undecidable manual S 125 37.9287 50 0.05 48
IV.CRMI.HNN. 2019-08-10T00:54:22.99 0.6 undecidable manual S 237 40.3263 50 0.12 48
IV.LMD.HHZ. 2019-08-10T00:54:18.55 0.3 undecidable manual S 69 26.0517 109 -0.14 73
IV.MPPT.EHZ. 2019-08-10T00:54:18.15 0.6 undecidable manual S 261 25.2525 109 -0.27 47
IV.BRIS.HHN. 2019-08-10T00:54:17.08 0.3 undecidable manual P 49 38.628 50 0.26 70
IV.ASQU.HHZ. 2019-08-10T00:54:16.63 0.3 undecidable manual P 125 37.9287 50 -0.07 72
IV.CRMI.HNN. 2019-08-10T00:54:16.98 0.1 undecidable manual P 237 40.3263 50 -0.09 96
IV.RUFI.EHZ. 2019-08-10T00:54:16.64 0.6 undecidable manual S 154 19.3695 115 0.12 49
IV.SFI.EHZ. 2019-08-10T00:54:16.41 0.1 undecidable manual P 105 36.8298 50 -0.13 96
IV.MOCL.EHZ. 2019-08-10T00:54:15.95 0.3 undecidable manual S 274 17.6712 116 -0.06 75
IV.MPPT.EHZ. 2019-08-10T00:54:14.41 0.1 undecidable manual P 261 25.2525 109 -0.09 98
IV.LMD.HHZ. 2019-08-10T00:54:14.50 0.1 undecidable manual P 69 26.0517 109 -0.16 97
IV.RUFI.EHZ. 2019-08-10T00:54:13.55 0.3 undecidable manual P 154 19.3695 115 0.14 74
IV.SEI.HHZ. 2019-08-10T00:54:13.20 0.3 undecidable manual S 332 7.4814 140 0.03 77
IV.MOCL.EHZ. 2019-08-10T00:54:13.27 0.1 undecidable manual P 274 17.6712 116 0.16 98
IV.SEI.HHZ. 2019-08-10T00:54:11.63 0.1 undecidable manual P 332 7.4814 140 0.16 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SEI.HHE. ML:1.2 0.00022511935 0.2 AML other m 2019-08-10T00:54:13.85
IV.SEI.HHN. ML:1.5 0.0005675126 0.32 AML other m 2019-08-10T00:54:13.42
IV.MOCL.EHN. ML:1.3 0.00015646015 0.16 AML other m 2019-08-10T00:54:16.27
IV.MOCL.EHE. ML:1.3 0.0001860992 0.12 AML other m 2019-08-10T00:54:16.34
IV.RUFI.EHN. ML:0.5 0.000023204373 0.4 AML other m 2019-08-10T00:54:21.95
IV.RUFI.EHE. ML:0.4 0.000022105074999999998 0.52 AML other m 2019-08-10T00:54:22.76
IV.MPPT.EHN. ML:0.7 0.00003064588 1.6 AML other m 2019-08-10T00:54:19.19
IV.MPPT.EHE. ML:0.6 0.000025807614999999998 0.12 AML other m 2019-08-10T00:54:19.25
IV.LMD.HHN. ML:0.9 0.000045037915 0.18 AML other m 2019-08-10T00:54:18.73
IV.LMD.HHE. ML:0.7 0.00003116927 0.16 AML other m 2019-08-10T00:54:18.71
IV.SFI.EHN. ML:0.9 0.000030519055 0.22 AML other m 2019-08-10T00:54:22.82
IV.SFI.EHE. ML:0.9 0.00002791908 0.18 AML other m 2019-08-10T00:54:22.62
IV.ASQU.HHE. ML:0.8 0.000023173155 0.22 AML other m 2019-08-10T00:54:23.79
IV.ASQU.HHN. ML:0.9 0.000028624895 0.2 AML other m 2019-08-10T00:54:23.71
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