Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 27-08-2019 and time 02:25:39 (Italy) in region 4 km W Tavarnelle Val di Pesa (FI)

A magnitude ML 1.8 earthquake occured in region: 4 km W Tavarnelle Val di Pesa (FI), on

  • 27-08-2019 00:25:39 (UTC)
  • 27-08-2019 02:25:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5730, 11.1270 at 8 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
Tavarnelle Val di Pesa FI 4 7800 7800
Barberino Val d'Elsa FI 5 4386 12186
Certaldo FI 7 16121 28307
Montespertoli FI 9 13537 41844
San Casciano in Val di Pesa FI 11 17062 58906
Poggibonsi SI 12 29196 88102
Castelfiorentino FI 13 17504 105606
San Gimignano SI 13 7820 113426
Gambassi Terme FI 14 4870 118296
Greve in Chianti FI 15 13862 132158
Impruneta FI 16 14615 146773
Colle di Val d'Elsa SI 17 21620 168393
Castellina in Chianti SI 17 2859 171252
Montaione FI 17 3700 174952
Montelupo Fiorentino FI 19 14098 189050

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km S of Scandicci (50609 inhabitants)
24 Km SW of Firenze (382808 inhabitants)
33 Km NW of Siena (53903 inhabitants)
34 Km S of Prato (191150 inhabitants)
44 Km SE of Pistoia (90315 inhabitants)
59 Km SE of Lucca (89046 inhabitants)
60 Km E of Pisa (89158 inhabitants)
62 Km W of Arezzo (99543 inhabitants)
66 Km E of Livorno (159219 inhabitants)
78 Km E of Viareggio (62467 inhabitants)
90 Km N of Grosseto (82087 inhabitants)
94 Km SE of Massa (69479 inhabitants)
99 Km SW of Imola (69797 inhabitants)
100 Km SW of Faenza (58541 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 1.8 2019-08-27
00:25:39		 43.5733 11.127 9 2019-11-13
14:31:02		 Bollettino Sismico Italiano INGV 72480181
Reviewed
Rev100 		ML 1.8 2019-08-27
00:25:39		 43.5757 11.1353 8 2019-08-27
00:37:10		 Sala Sismica INGV-Roma 71833171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-27 00:25:39 ± 0.08
Latitude 43.5733 ± 0.0036
Longitude 11.1270 ± 0.0062
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72480181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 375
Semi-minor axis of confidence ellipse (meter) 348
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 94
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
Number of associated phases, regardless of their use for origin computation 51
Number of defining phases 46
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.06210
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 55
Type of magnitude ML
Reference to an origin 72480181
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-17 06:49:53

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 46
Type of magnitude ML
Reference to an origin 71833171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-27 00:37:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CIGN.HHZ. 2019-08-27T00:27:28.20 3.0 undecidable manual Sg 15.7 0
GU.PZZ.HHZ. 2019-08-27T00:27:10.55 3.0 undecidable manual Sn 6.36 0
IV.VIVA.HHZ. 2019-08-27T00:26:41.70 3.0 undecidable manual Sn -1.57 0
IV.LPEL.HHZ. 2019-08-27T00:26:28.99 3.0 undecidable manual Pg 6.61 0
IV.MSSA.HHZ. 2019-08-27T00:26:04.18 3.0 undecidable manual P 0.1 0
IV.LMD.HHZ. 2019-08-27T00:26:01.87 0.6 undecidable manual S 40 72.6717 50 0.4 42
IV.SFI.EHZ. 2019-08-27T00:26:00.62 0.6 undecidable manual S 57 68.376 50 0.28 44
IV.RIBO.EHZ.01 2019-08-27T00:26:00.51 0.3 undecidable manual S 185 69.5748 50 -0.13 67
IV.BDI.HHZ. 2019-08-27T00:26:00.56 0.6 undecidable manual S 322 68.9754 50 0.08 45
IV.CELB.HHZ. 2019-08-27T00:25:59.80 0.3 undecidable manual P 219 117.8931 50 0.83 49
IV.FNVD.HHZ. 2019-08-27T00:25:59.51 0.3 undecidable manual S 360 65.9895 50 -0.17 67
GU.POPM.HHZ. 2019-08-27T00:25:58.06 0.6 undecidable manual S 331 60.0954 50 -0.06 46
IV.SEI.HHZ. 2019-08-27T00:25:57.26 1.0 undecidable manual S 19 56.499 50 0.11 23
IV.ATTE.HHZ. 2019-08-27T00:25:57.58 1.0 undecidable manual P 112 107.3148 50 0.25 20
IV.ASQU.HHZ. 2019-08-27T00:25:57.33 0.3 undecidable manual S 65 58.5969 50 -0.39 65
IV.TRIF.CHZ. 2019-08-27T00:25:56.46 1.0 undecidable manual S 200 54.0015 50 -0.02 24
GU.GSCL.HHZ. 2019-08-27T00:25:56.73 0.6 undecidable manual P 334 96.3258 50 1.09 31
IV.CASP.HHZ. 2019-08-27T00:25:55.20 0.6 undecidable manual P 194 89.3439 50 0.64 38
TV.SF04.EHZ. 2019-08-27T00:25:55.21 0.3 undecidable manual P 152 92.5407 50 0.16 64
MN.VLC.HHZ. 2019-08-27T00:25:54.89 0.6 undecidable manual P 318 87.9453 50 0.55 39
IV.PII.HHZ. 2019-08-27T00:25:54.77 0.3 undecidable manual S 289 51.1155 50 -0.93 54
IV.MOCL.EHZ. 2019-08-27T00:25:54.60 0.6 undecidable manual S 5 48.1185 50 -0.3 45
IV.RUFI.EHZ. 2019-08-27T00:25:53.33 0.3 undecidable manual S 46 42.4242 50 -0.08 72
IV.MPPT.EHZ. 2019-08-27T00:25:53.06 0.3 undecidable manual S 356 42.7239 50 -0.41 67
IV.RIBO.EHZ.01 2019-08-27T00:25:52.24 0.6 undecidable manual P 185 69.5748 50 0.73 38
IV.CAFI.HHZ. 2019-08-27T00:25:52.09 0.6 undecidable manual P 112 72.7716 50 0.08 45
GU.CARD.HHZ. 2019-08-27T00:25:52.08 0.3 undecidable manual P 314 72.0723 50 0.19 66
IV.LMD.HHZ. 2019-08-27T00:25:52.25 0.3 undecidable manual P 40 72.6717 50 0.26 65
IV.FNVD.HHZ. 2019-08-27T00:25:51.43 0.3 undecidable manual P 360 65.9895 50 0.48 63
IV.BDI.HHZ. 2019-08-27T00:25:51.92 0.3 undecidable manual P 322 68.9754 50 0.5 62
IV.SFI.EHZ. 2019-08-27T00:25:51.39 0.3 undecidable manual P 57 68.376 50 0.05 69
IV.FROS.CHZ. 2019-08-27T00:25:51.82 0.3 undecidable manual S 177 40.4262 50 -1.04 52
GU.POPM.HHZ. 2019-08-27T00:25:50.47 0.6 undecidable manual P 331 60.0954 50 0.41 43
GU.MAIM.HHZ. 2019-08-27T00:25:50.69 0.3 undecidable manual P 307 63.3921 50 0.12 68
IV.SEI.HHZ. 2019-08-27T00:25:49.70 0.3 undecidable manual P 19 56.499 50 0.2 68
IV.ASQU.HHZ. 2019-08-27T00:25:49.85 0.3 undecidable manual P 65 58.5969 50 0.03 70
IT.FIE.HGE. 2019-08-27T00:25:49.29 0.3 undecidable manual S 27 29.2485 106 -0.31 70
IV.MAGO.CHZ. 2019-08-27T00:25:48.45 0.3 undecidable manual P 229 50.3163 50 -0.1 70
IV.TRIF.CHZ. 2019-08-27T00:25:48.84 0.3 undecidable manual P 200 54.0015 50 -0.27 67
IV.CRMI.HHZ. 2019-08-27T00:25:48.50 0.3 undecidable manual S 334 27.3504 107 -0.48 68
IV.PII.HHZ. 2019-08-27T00:25:48.64 0.3 undecidable manual P 289 51.1155 50 -0.02 71
IV.MOCL.EHZ. 2019-08-27T00:25:48.40 0.3 undecidable manual P 5 48.1185 50 0.2 69
IV.RUFI.EHZ. 2019-08-27T00:25:47.02 0.3 undecidable manual P 46 42.4242 50 -0.31 68
IV.MPPT.EHZ. 2019-08-27T00:25:47.19 0.1 undecidable manual P 356 42.7239 50 -0.18 93
IV.FROS.CHZ. 2019-08-27T00:25:46.77 0.3 undecidable manual P 177 40.4262 50 -0.25 69
IT.FIE.HGE. 2019-08-27T00:25:45.28 0.3 undecidable manual P 27 29.2485 106 0.15 72
IV.CSNT.HHZ. 2019-08-27T00:25:45.33 0.6 undecidable manual S 130 17.1717 116 -0.37 47
IV.CRMI.HHZ. 2019-08-27T00:25:44.57 0.3 undecidable manual P 334 27.3504 107 -0.21 72
IV.OSSC.HHZ. 2019-08-27T00:25:43.99 0.3 undecidable manual S 120 10.9779 128 0.12 75
IV.CSNT.HHZ. 2019-08-27T00:25:42.71 0.1 undecidable manual P 130 17.1717 116 -0.17 98
IV.OSSC.HHZ. 2019-08-27T00:25:41.95 0.1 undecidable manual P 120 10.9779 128 0.12 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FROS.CHE. ML:0.0 0.0012635332 0.224 AML other m 2019-08-27T00:25:52.12
IV.FROS.CHN. ML:0.0 0.00079478205 0.312 AML other m 2019-08-27T00:25:52.12
IV.MPPT.EHE. ML:0.0 0.000239907 0.28 AML other m 2019-08-27T00:25:54.24
IV.MPPT.EHN. ML:0.0 0.00028535855 0.2 AML other m 2019-08-27T00:25:54.42
IV.PII.HHN. ML:0.0 0.00031969824999999996 0.28 AML other m 2019-08-27T00:25:55.43
IV.PII.HHE. ML:0.0 0.00029344749999999996 0.36 AML other m 2019-08-27T00:25:57.43
IV.OSSC.HNE. ML:1.8 0.0007729601500000001 0.29 AML other m 2019-08-27T00:25:46.62
IV.OSSC.HNN. ML:2.0 0.0011878026 0.2 AML other m 2019-08-27T00:25:44.09
IV.OSSC.HHE. ML:2.0 0.0012441999 0.22 AML other m 2019-08-27T00:25:44.08
IV.OSSC.HHN. ML:1.8 0.00078054775 0.3 AML other m 2019-08-27T00:25:46.62
IV.CRMI.HNN. ML:1.8 0.0003207996 0.22 AML other m 2019-08-27T00:25:49.16
IV.CRMI.HHE. ML:1.2 0.00007860265499999999 0.18 AML other m 2019-08-27T00:25:50.23
IV.CRMI.HNE. ML:1.6 0.0002086763 0.22 AML other m 2019-08-27T00:25:50.22
IV.CRMI.HHN. ML:1.3 0.00012045185 0.22 AML other m 2019-08-27T00:25:49.16
IV.RUFI.EHE. ML:2.2 0.0004556163 0.2 AML other m 2019-08-27T00:25:53.56
IV.RUFI.EHN. ML:2.0 0.00030716385 0.2 AML other m 2019-08-27T00:25:53.56
IV.MOCL.EHN. ML:1.8 0.00018981895 0.4 AML other m 2019-08-27T00:25:59.26
IV.MOCL.EHE. ML:1.9 0.00022365635 0.28 AML other m 2019-08-27T00:25:59.13
IV.MAGO.CHE. ML:1.6 0.00010543659999999999 0.312 AML other m 2019-08-27T00:25:59.89
IV.MAGO.CHN. ML:1.6 0.00011732640499999999 0.264 AML other m 2019-08-27T00:25:56.34
IV.SEI.HHE. ML:2.0 0.00024170380000000002 0.24 AML other m 2019-08-27T00:25:59.86
IV.SEI.HHN. ML:2.2 0.00033338605 0.38 AML other m 2019-08-27T00:26:02.21
IV.ASQU.HHE. ML:1.9 0.0001550598 0.26 AML other m 2019-08-27T00:25:58.80
IV.ASQU.HHN. ML:1.7 0.00010278141999999999 0.2 AML other m 2019-08-27T00:25:59.02
GU.POPM.HHE. ML:1.8 0.00011488509999999999 0.18 AML other m 2019-08-27T00:26:01.31
GU.POPM.HHN. ML:1.9 0.00016020105000000002 0.18 AML other m 2019-08-27T00:26:00.05
IV.SFI.HNN. ML:1.8 0.00010465687 0.47 AML other m 2019-08-27T00:25:54.94
IV.SFI.EHE. ML:1.7 0.00009201785 0.38 AML other m 2019-08-27T00:26:01.38
IV.SFI.HNE. ML:1.9 0.0001371341 0.61 AML other m 2019-08-27T00:25:56.17
IV.SFI.EHN. ML:1.6 0.00007296793 0.26 AML other m 2019-08-27T00:26:01.50
IV.FNVD.HHE. ML:1.7 0.00009386575499999999 0.72 AML other m 2019-08-27T00:26:05.73
IV.FNVD.HHN. ML:1.7 0.00008469276000000001 0.32 AML other m 2019-08-27T00:26:05.96
IV.BDI.HHE. ML:1.8 0.0001081311 0.52 AML other m 2019-08-27T00:26:03.58
IV.BDI.HHN. ML:1.6 0.00007570414 0.3 AML other m 2019-08-27T00:26:04.26
IV.BDI.HNE. ML:1.9 0.00013633425 0.47 AML other m 2019-08-27T00:26:03.55
GU.CARD.HHN. ML:1.8 0.00010479098 0.3 AML other m 2019-08-27T00:26:04.36
GU.CARD.HHE. ML:1.7 0.00007351909500000001 0.16 AML other m 2019-08-27T00:26:05.82
IV.CAFI.HHN. ML:1.2 0.0000252022 0.48 AML other m 2019-08-27T00:26:10.18
IV.CAFI.HHE. ML:1.3 0.000028024010000000002 0.3 AML other m 2019-08-27T00:26:04.48
IV.CAFI.HNE. ML:1.3 0.00002946476 0.56 AML other m 2019-08-27T00:26:03.86
IV.RIBO.EHE.01 ML:1.6 0.00007174722999999999 0.16 AML other m 2019-08-27T00:26:00.76
IV.LMD.HHN. ML:1.9 0.00011297541 0.24 AML other m 2019-08-27T00:26:03.03
IV.LMD.HHE. ML:1.8 0.00010889733000000002 0.28 AML other m 2019-08-27T00:26:02.90
MN.VLC.HHN. ML:1.4 0.00002970931 0.42 AML other m 2019-08-27T00:26:08.36
MN.VLC.HHE. ML:1.5 0.00003788879 0.42 AML other m 2019-08-27T00:26:08.53
MN.VLC.HNE. ML:1.9 0.00009351517999999999 1 AML other m 2019-08-27T00:26:13.59
MN.VLC.HNN. ML:1.8 0.00008505008499999999 0.74 AML other m 2019-08-27T00:26:14.52
IV.CASP.HHE. ML:1.4 0.000027685555 0.36 AML other m 2019-08-27T00:25:56.34
IV.CASP.HHN. ML:1.6 0.000045469135000000004 0.38 AML other m 2019-08-27T00:25:56.14
GU.GSCL.HHN. ML:1.8 0.000061268925 0.32 AML other m 2019-08-27T00:26:13.38
GU.GSCL.HHE. ML:1.8 0.00007471818999999998 0.6 AML other m 2019-08-27T00:26:11.19
IV.ATTE.HHN. ML:1.4 0.000024125515 0.7 AML other m 2019-08-27T00:26:17.24
IV.ATTE.HHE. ML:1.4 0.000021020335000000002 0.5 AML other m 2019-08-27T00:26:19.39
IV.CELB.HHN. ML:1.6 0.00002796459 0.34 AML other m 2019-08-27T00:26:15.42
IV.CELB.HHE. ML:1.4 0.00001774001 0.3 AML other m 2019-08-27T00:26:16.29
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