Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 19-08-2019 and time 11:59:36 (Italy) in region 3 km S Montelupo Fiorentino (FI)

A magnitude ML 1.6 earthquake occured in region: 3 km S Montelupo Fiorentino (FI), on

  • 19-08-2019 09:59:36 (UTC)
  • 19-08-2019 11:59:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.7030, 11.0330 at 12 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
Montelupo Fiorentino FI 3 14098 14098
Capraia e Limite FI 6 7670 21768
Empoli FI 7 48109 69877
Montespertoli FI 7 13537 83414
Lastra a Signa FI 10 20156 103570
Signa FI 10 19179 122749
Castelfiorentino FI 12 17504 140253
Carmignano PO 13 14450 154703
Vinci FI 13 14604 169307
Poggio a Caiano PO 13 10007 179314
San Casciano in Val di Pesa FI 13 17062 196376
Scandicci FI 14 50609 246985
Cerreto Guidi FI 14 10870 257855
San Miniato PI 15 27934 285789
Campi Bisenzio FI 16 46166 331955
Quarrata PT 17 26190 358145
Lamporecchio PT 17 7508 365653
Certaldo FI 17 16121 381774
Impruneta FI 18 14615 396389
Fucecchio FI 18 23618 420007
Larciano PT 18 6394 426401
Montaione FI 19 3700 430101
Gambassi Terme FI 19 4870 434971
Tavarnelle Val di Pesa FI 19 7800 442771
Firenze FI 20 382808 825579
Sesto Fiorentino FI 20 48958 874537

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km W of Scandicci (50609 inhabitants)
20 Km W of Firenze (382808 inhabitants)
21 Km S of Prato (191150 inhabitants)
27 Km SE of Pistoia (90315 inhabitants)
45 Km E of Lucca (89046 inhabitants)
49 Km NW of Siena (53903 inhabitants)
51 Km E of Pisa (89158 inhabitants)
61 Km E of Livorno (159219 inhabitants)
65 Km E of Viareggio (62467 inhabitants)
73 Km W of Arezzo (99543 inhabitants)
81 Km E of Massa (69479 inhabitants)
86 Km E of Carrara (63133 inhabitants)
91 Km SW of Imola (69797 inhabitants)
92 Km S of Bologna (386663 inhabitants)
94 Km SW of Faenza (58541 inhabitants)
99 Km SW of Forlì (117913 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 1.6 2019-08-19
09:59:36		 43.703 11.0327 12 2019-11-13
14:31:01		 Bollettino Sismico Italiano INGV 72106491
Reviewed
Rev100 		ML 1.7 2019-08-19
09:59:36		 43.7012 11.0265 11 2019-08-19
10:11:03		 Sala Sismica INGV-Roma 71622671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-19 09:59:36 ± 0.08
Latitude 43.7030 ± 0.0054
Longitude 11.0327 ± 0.0075
Depth (km) 12 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72106491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 645
Semi-minor axis of confidence ellipse (meter) 370
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.66999
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 72106491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-04 10:25:32

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 71622671
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-19 10:11:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IT.VNF1.HGZ. 2019-08-19T10:01:04.14 3.0 undecidable manual Sn 3.26 0
IV.PZUN.HHZ. 2019-08-19T10:00:56.93 3.0 negative manual Pg 12.17 0
ST.OZOL.EHZ. 2019-08-19T10:00:25.26 3.0 negative manual Pg 7.71 0
IV.LAV9.HHZ. 2019-08-19T10:00:20.54 3.0 positive manual Pg 7.49 0
IV.VENL.HNZ. 2019-08-19T10:00:13.90 3.0 undecidable manual Pg 6.54 0
IV.LMD.HHZ. 2019-08-19T09:59:57.44 0.3 undecidable manual S 52 68.0763 91 0.22 67
IV.FROS.CHZ. 2019-08-19T09:59:53.30 0.1 undecidable manual S 170 55.5999 91 -0.6 83
GU.MAIM.HHZ. 2019-08-19T09:59:51.72 0.3 undecidable manual S 299 49.2174 91 -0.48 64
IV.CRE.HHZ. 2019-08-19T09:59:50.26 0.1 undecidable manual P 97 74.37 91 0.79 74
MN.VLC.HHZ. 2019-08-19T09:59:49.72 0.1 undecidable manual P 315 72.2721 91 0.56 82
IV.RUFI.EHZ. 2019-08-19T09:59:49.48 0.3 undecidable manual S 68 41.0256 91 -0.52 62
IV.PII.HHZ. 2019-08-19T09:59:49.13 0.1 undecidable manual S 273 40.7259 91 -0.81 77
IV.TRIF.CHE. 2019-08-19T09:59:48.53 0.1 undecidable manual P 189 66.0894 91 0.33 86
IV.LMD.HHZ. 2019-08-19T09:59:48.83 0.1 undecidable manual P 52 68.0763 91 0.32 87
GU.CARD.HHZ. 2019-08-19T09:59:47.14 0.1 undecidable manual P 309 56.7987 91 0.38 88
IV.CSNT.HHZ. 2019-08-19T09:59:47.37 0.3 undecidable manual S 141 32.8449 92 -0.45 67
IV.FROS.CHZ. 2019-08-19T09:59:46.88 0.1 positive manual P 170 55.5999 91 0.29 89
IV.MPPT.EHZ. 2019-08-19T09:59:46.35 0.1 undecidable manual S 9 28.6491 93 -0.34 90
IV.BDI.HHZ. 2019-08-19T09:59:46.66 0.1 undecidable manual P 319 53.0025 91 0.47 87
IV.SEI.HHZ. 2019-08-19T09:59:45.42 0.1 undecidable manual P 34 46.9197 91 0.18 94
IV.OSSC.HHZ. 2019-08-19T09:59:45.74 0.1 undecidable manual S 139 26.2515 93 -0.32 93
GU.MAIM.HHZ. 2019-08-19T09:59:45.82 0.1 undecidable manual P 299 49.2174 91 0.22 92
IV.RUFI.EHZ. 2019-08-19T09:59:44.40 0.1 undecidable manual P 68 41.0256 91 0.06 97
IV.PII.HHZ. 2019-08-19T09:59:44.45 0.1 negative manual P 273 40.7259 91 0.15 94
GU.POPM.HHZ. 2019-08-19T09:59:44.96 0.1 undecidable manual P 330 43.9227 91 0.19 94
IV.MOCL.EHZ. 2019-08-19T09:59:43.33 0.1 undecidable manual P 19 35.5422 92 -0.16 93
IV.CSNT.HHZ. 2019-08-19T09:59:42.96 0.1 undecidable manual P 141 32.8449 92 -0.11 96
IV.MPPT.EHZ. 2019-08-19T09:59:42.30 0.1 positive manual P 9 28.6491 93 -0.12 95
IV.CRMI.HHE. 2019-08-19T09:59:41.68 0.1 undecidable manual S 337 11.0778 120 -0.45 92
IV.OSSC.HHZ. 2019-08-19T09:59:41.94 0.1 negative manual P 139 26.2515 93 -0.12 97
IV.CRMI.HHE. 2019-08-19T09:59:39.73 0.1 positive manual P 337 11.0778 120 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHE. ML:1.8 0.00033899999999999995 1.46 AML other m 2019-08-19T09:59:45.25
IV.MPPT.EHE. ML:1.6 0.00017449999999999999 0.58 AML other m 2019-08-19T09:59:46.58
IV.MPPT.EHN. ML:1.6 0.0001735 0.12 AML other m 2019-08-19T09:59:46.98
IV.OSSC.HHN. ML:1.7 0.000263 1.54 AML other m 2019-08-19T09:59:46.98
IV.CSNT.HHN. ML:1.6 0.000183 0.48 AML other m 2019-08-19T09:59:47.93
IV.PII.HHN. ML:2.1 0.0004305 0.14 AML other m 2019-08-19T09:59:49.40
IV.PII.HHE. ML:2.0 0.0002945 1.28 AML other m 2019-08-19T09:59:49.87
IV.CSNT.HHE. ML:1.6 0.0001565 1.74 AML other m 2019-08-19T09:59:49.94
IV.MOCL.EHE. ML:1.3 0.00008645 0.62 AML other m 2019-08-19T09:59:50.42
IV.RUFI.EHN. ML:1.5 0.00010700000000000001 0.18 AML other m 2019-08-19T09:59:50.22
IV.RUFI.EHE. ML:1.5 0.0001148 0.86 AML other m 2019-08-19T09:59:50.31
IV.MOCL.EHN. ML:1.3 0.00008269999999999999 0.22 AML other m 2019-08-19T09:59:50.60
GU.POPM.HHE. ML:1.9 0.00022999999999999998 1.78 AML other m 2019-08-19T09:59:51.97
GU.POPM.HHN. ML:1.9 0.0002285 0.78 AML other m 2019-08-19T09:59:52.63
IV.FROS.CHE. ML:2.1 0.00029099999999999997 0.14 AML other m 2019-08-19T09:59:53.77
IV.FROS.CHN. ML:1.8 0.0001395 0.76 AML other m 2019-08-19T09:59:54.27
IV.SEI.HHE. ML:1.7 0.00013625 0.32 AML other m 2019-08-19T09:59:56.53
IV.SEI.HHN. ML:2.0 0.000302 0.46 AML other m 2019-08-19T09:59:56.14
IV.BDI.HHE. ML:1.8 0.0001495 0.94 AML other m 2019-08-19T09:59:56.11
IV.BDI.HHN. ML:1.6 0.0001071 0.34 AML other m 2019-08-19T09:59:57.40
IV.LMD.HHE. ML:1.5 0.00005205 0.16 AML other m 2019-08-19T09:59:58.37
IV.LMD.HHN. ML:1.7 0.0000776 0.72 AML other m 2019-08-19T09:59:58.37
IV.CRE.HHE. ML:1.5 0.0000493 0.32 AML other m 2019-08-19T09:59:59.66
IV.CRE.HHN. ML:1.6 0.00006634999999999999 0.28 AML other m 2019-08-19T10:00:00.27
MN.VLC.HHN. ML:1.4 0.000044999999999999996 1.3 AML other m 2019-08-19T10:00:00.71
MN.VLC.HHE. ML:1.3 0.00003585 0.42 AML other m 2019-08-19T10:00:01.65
IV.MABI.HHE. ML:1.5 0.000006165 0.72 AML other m 2019-08-19T10:00:47.09
IV.MABI.HHN. ML:1.5 0.00000748 0.76 AML other m 2019-08-19T10:00:47.50
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