Earthquake with magnitude of ML 1.5 on date 08-07-2019 and time 23:20:00 (Italy) in region 2 km NW Colle di Val d'Elsa (SI)

A magnitude ML 1.5 earthquake occured in region: 2 km NW Colle di Val d'Elsa (SI), on

  • 08-07-2019 21:20:00 (UTC)
  • 08-07-2019 23:20:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.43, 11.1 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Colle di Val d'Elsa SI 2 21620 21620
Poggibonsi SI 5 29196 50816
San Gimignano SI 6 7820 58636
Monteriggioni SI 10 9810 68446
Casole d'Elsa SI 11 3897 72343
Barberino Val d'Elsa FI 14 4386 76729
Certaldo FI 14 16121 92850
Castellina in Chianti SI 15 2859 95709
Tavarnelle Val di Pesa FI 16 7800 103509
Gambassi Terme FI 17 4870 108379
Radicondoli SI 19 914 109293
Sovicille SI 20 10116 119409

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NW of Siena (53903 inhabitants)
37 Km S of Scandicci (50609 inhabitants)
40 Km SW of Firenze (382808 inhabitants)
50 Km S of Prato (191150 inhabitants)
58 Km S of Pistoia (90315 inhabitants)
63 Km W of Arezzo (99543 inhabitants)
65 Km E of Pisa (89158 inhabitants)
66 Km E of Livorno (159219 inhabitants)
67 Km SE of Lucca (89046 inhabitants)
75 Km N of Grosseto (82087 inhabitants)
84 Km SE of Viareggio (62467 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 1.5 2019-07-08
21:20:00
43.43 11.1 8 2019-11-13
14:30:54
Bollettino Sismico Italiano INGV 70494011
Rev 100 ML 1.5 2019-07-08
21:20:00
43.44 11.09 8 2019-07-08
21:53:14
Sala Sismica INGV-Roma 70384731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-07-08 21:20:00 ± 0.12
Latitude 43.43 ± 0.01
Longitude 11.10 ± 0.01
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 70494011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 682
Semi-minor axis of confidence ellipse (meter) 610
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 330
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) 61
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 28
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) 0.1385
Epicentral distance of station farthest from the epicenter (degree) 1.00184
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 70494011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-07-12 08:43:37

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 70384731
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-07-08 21:53:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
TV.SF13.HHN. 2019-07-08T21:20:23.20 3.0 undecidable manual S 148 0.7186 50 -1.38 0
IV.CASP.HHE. 2019-07-08T21:20:22.80 1.0 undecidable manual S 195 0.6628 50 -0.15 22
IV.CAFI.HHZ. 2019-07-08T21:20:21.20 1.0 undecidable manual S 99 0.634 50 -0.9 17
IV.MAON.HHZ. 2019-07-08T21:20:20.76 3.0 undecidable manual P 1.0018 1.65 0
IV.ATVO.HHN. 2019-07-08T21:20:19.11 1.0 undecidable manual P 93 0.947 50 0.95 16
IV.RUFI.EHZ. 2019-07-08T21:20:17.80 0.3 undecidable manual S 36 0.5018 50 -0.37 65
IV.PII.HHZ. 2019-07-08T21:20:17.60 3.0 undecidable manual S 305 0.5108 50 -0.83 0
IV.PARC.HHE. 2019-07-08T21:20:17.23 1.0 undecidable manual P 75 0.8499 50 0.72 18
IV.RIBO.EHZ.01 2019-07-08T21:20:17.30 0.3 undecidable manual S 185 0.4838 50 -0.33 66
IV.ATMC.EHE. 2019-07-08T21:20:15.82 1.0 undecidable manual P 88 0.7896 50 0.34 21
IV.LMD.HHE. 2019-07-08T21:20:15.82 0.3 undecidable manual P 34 0.7788 50 0.53 59
TV.SF13.HHN. 2019-07-08T21:20:14.48 0.3 undecidable manual P 148 0.7186 50 0.23 64
IV.CASP.HHE. 2019-07-08T21:20:14.06 0.6 undecidable manual P 195 0.6628 50 0.76 37
IV.TRIF.CHE. 2019-07-08T21:20:13.00 0.6 undecidable manual S 205 0.348 50 -0.63 42
IV.MAGO.CHZ. 2019-07-08T21:20:13.50 0.1 undecidable manual S 244 0.3606 50 -0.49 87
IV.ARCI.HHZ. 2019-07-08T21:20:13.41 0.3 undecidable manual P 155 0.6385 50 0.52 61
IV.CAFI.HHZ. 2019-07-08T21:20:12.97 0.1 undecidable manual P 99 0.634 50 0.16 89
IV.MTCR.EHZ. 2019-07-08T21:20:12.96 1.0 undecidable manual P 353 0.6016 50 0.71 19
IV.CRE.HHZ. 2019-07-08T21:20:12.85 0.3 undecidable manual P 73 0.6421 50 -0.09 67
IV.MOCL.EHZ. 2019-07-08T21:20:12.17 1.0 undecidable manual P 5 0.5765 50 0.35 22
IV.MPPT.EHN. 2019-07-08T21:20:11.08 0.3 undecidable manual P 359 0.5261 50 0.11 69
IV.PII.HHZ. 2019-07-08T21:20:10.94 0.3 undecidable manual P 305 0.5108 50 0.24 67
IV.RIBO.EHZ.01 2019-07-08T21:20:10.75 0.6 undecidable manual P 185 0.4838 50 0.52 42
IV.RUFI.EHZ. 2019-07-08T21:20:10.31 0.1 undecidable manual P 36 0.5018 50 -0.23 90
IV.CRMI.HNN. 2019-07-08T21:20:08.11 0.6 undecidable manual P 346 0.3759 50 -0.28 46
IV.MAGO.CHZ. 2019-07-08T21:20:08.19 0.1 undecidable manual P 244 0.3606 50 0.06 96
IV.TRIF.CHE. 2019-07-08T21:20:07.82 0.1 undecidable manual P 205 0.348 50 -0.1 95
IV.FROS.CHE. 2019-07-08T21:20:06.10 3.0 undecidable manual S 0.2239 -3.08 0
IV.OSSC.HHZ. 2019-07-08T21:20:05.90 0.1 undecidable manual S 48 0.1385 117 -0.2 97
IV.CSNT.HHZ. 2019-07-08T21:20:05.80 0.1 undecidable manual S 73 0.1412 116 -0.41 93
IV.OSSC.HHZ. 2019-07-08T21:20:03.72 0.1 positive manual P 48 0.1385 117 0.14 98
IV.CSNT.HHZ. 2019-07-08T21:20:03.68 0.1 positive manual P 73 0.1412 116 0.04 100
IV.FROS.CHE. 2019-07-08T21:20:02.66 3.0 undecidable manual P 0.2239 -2.69 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.OSSC.HHE. ML:1.5 0.000338 0.44 AML other m 2019-07-08T21:20:06.09
IV.CSNT.HHN. ML:1.9 0.000785 1.44 AML other m 2019-07-08T21:20:06.94
IV.CSNT.HHE. ML:1.7 0.000475 0.42 AML other m 2019-07-08T21:20:06.23
IV.OSSC.HHN. ML:1.4 0.0002775 0.3 AML other m 2019-07-08T21:20:06.10
IV.OSSC.HNE. ML:1.4 0.0002566689 0.2944 AML other m 2019-07-08T21:20:06.25
IV.OSSC.HNN. ML:1.4 0.00027083205 0.256 AML other m 2019-07-08T21:20:06.32
IV.MAGO.CHN. ML:1.8 0.000206 0.14 AML other m 2019-07-08T21:20:13.89
IV.MAGO.CHE. ML:1.6 0.00015 0.72 AML other m 2019-07-08T21:20:14.32
IV.PII.HHN. ML:1.6 7.965E-5 0.24 AML other m 2019-07-08T21:20:18.17
IV.RIBO.EHE.01 ML:1.4 6.406638E-5 0.4 AML other m 2019-07-08T21:20:18.37
IV.PII.HHE. ML:1.6 9.22E-5 0.28 AML other m 2019-07-08T21:20:19.10
IV.MOCL.EHE. ML:1.2 3.24E-5 1.14 AML other m 2019-07-08T21:20:23.85
IV.MOCL.EHN. ML:1.4 4.6E-5 0.78 AML other m 2019-07-08T21:20:23.47
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