Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 15-11-2019 and time 23:11:42 (Italy) in region 2 km NE Colle di Val d'Elsa (SI)

A magnitude ML 1.7 earthquake occured in region: 2 km NE Colle di Val d'Elsa (SI), on

  • 15-11-2019 22:11:42 (UTC)
  • 15-11-2019 23:11:42 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4300, 11.1380 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.

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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
Colle di Val d'Elsa SI 2 21620 21620
Poggibonsi SI 4 29196 50816
Monteriggioni SI 8 9810 60626
San Gimignano SI 9 7820 68446
Casole d'Elsa SI 13 3897 72343
Castellina in Chianti SI 13 2859 75202
Barberino Val d'Elsa FI 13 4386 79588
Tavarnelle Val di Pesa FI 15 7800 87388
Certaldo FI 15 16121 103509
Sovicille SI 18 10116 113625
Gambassi Terme FI 19 4870 118495
Siena SI 20 53903 172398

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Siena (53903 inhabitants)
37 Km S of Scandicci (50609 inhabitants)
39 Km S of Firenze (382808 inhabitants)
50 Km S of Prato (191150 inhabitants)
59 Km SE of Pistoia (90315 inhabitants)
60 Km W of Arezzo (99543 inhabitants)
67 Km E of Pisa (89158 inhabitants)
68 Km E of Livorno (159219 inhabitants)
69 Km SE of Lucca (89046 inhabitants)
74 Km N of Grosseto (82087 inhabitants)
86 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
Bulletin
Rev1000 		ML 1.7 2019-11-15
22:11:42		 43.4303 11.1383 10 2020-02-28
16:42:19		 Bollettino Sismico Italiano INGV 75535741
Reviewed
Rev100 		ML 1.8 2019-11-15
22:11:42		 43.4373 11.0942 4 2019-11-15
22:23:06		 Sala Sismica INGV-Roma 73865531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-11-15 22:11:42 ± 0.08
Latitude 43.4303 ± 0.0054
Longitude 11.1383 ± 0.0198
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75535741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1645
Semi-minor axis of confidence ellipse (meter) 392
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 105
Circular confidence region, given by single value of horizontal uncertainty (meter) 1650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.53150
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 8
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations 14
Type of magnitude ML
Reference to an origin 75535741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-14 11:02:51

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations 12
Type of magnitude ML
Reference to an origin 73865531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-11-15 22:23:06
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MTCE.HHZ. 2019-11-15T22:12:37.19 3.0 undecidable manual Sn -0.32 0
IV.MMUR.HNZ. 2019-11-15T22:12:26.30 3.0 undecidable manual S 0.52 0
IV.CPGN.EHZ. 2019-11-15T22:12:12.22 3.0 undecidable manual S -2.7 0
IV.MPPT.EHN. 2019-11-15T22:12:00.93 0.3 undecidable manual S 356 58.5969 50 0.37 66
IV.SFI.EHZ. 2019-11-15T22:11:56.57 3.0 positive manual Pn 0.22 0
IV.TRIF.CHZ. 2019-11-15T22:11:55.50 0.3 undecidable manual S 209 39.8268 50 -0.06 72
IV.MAGO.CHZ. 2019-11-15T22:11:55.94 0.3 undecidable manual S 246 42.5241 50 -0.33 68
IV.CRMI.HNE. 2019-11-15T22:11:55.92 0.3 undecidable manual S 343 42.4242 50 -0.34 68
IV.PII.HHZ. 2019-11-15T22:11:53.01 0.1 undecidable manual P 303 58.9965 50 0.18 91
IV.MPPT.EHN. 2019-11-15T22:11:52.95 0.6 undecidable manual P 356 58.5969 50 0.18 46
IV.FROS.CHZ. 2019-11-15T22:11:51.09 0.3 undecidable manual S 177 24.5532 111 -0.17 73
IV.TRIF.CHZ. 2019-11-15T22:11:50.04 0.3 undecidable manual P 209 39.8268 50 0.15 71
IV.MAGO.CHZ. 2019-11-15T22:11:50.41 0.1 undecidable manual P 246 42.5241 50 0.11 95
IV.CRMI.HNE. 2019-11-15T22:11:49.59 0.6 undecidable manual P 343 42.4242 50 -0.69 41
IV.FROS.CHZ. 2019-11-15T22:11:47.60 0.1 undecidable manual P 177 24.5532 111 0.19 97
IV.CSNT.HHZ. 2019-11-15T22:11:47.41 0.3 undecidable manual S 69 13.0758 126 -0.36 71
IV.OSSC.HHZ. 2019-11-15T22:11:47.80 0.3 undecidable manual S 40 13.4754 125 -0.07 76
IV.CSNT.HHZ. 2019-11-15T22:11:45.51 0.1 positive manual P 69 13.0758 126 0.12 100
IV.OSSC.HHZ. 2019-11-15T22:11:45.62 0.1 positive manual P 40 13.4754 125 0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSNT.HHN. ML:1.7 0.0006172222499999999 0.1536 AML other m 2019-11-15T22:11:47.59
IV.CSNT.HHE. ML:1.8 0.00065168315 0.0896 AML other m 2019-11-15T22:11:47.72
IV.OSSC.HHE. ML:1.8 0.0007616192 0.3584 AML other m 2019-11-15T22:11:48.04
IV.OSSC.HNE. ML:1.7 0.0004991715 0.1664 AML other m 2019-11-15T22:11:48.04
IV.OSSC.HNN. ML:1.8 0.0007268148 0.3712 AML other m 2019-11-15T22:11:48.06
IV.OSSC.HHN. ML:1.7 0.000509072 0.1792 AML other m 2019-11-15T22:11:48.03
IV.FROS.CHE. ML:1.6 0.00023959413 0.2176 AML other m 2019-11-15T22:11:51.40
IV.FROS.CHN. ML:1.6 0.00026791864999999997 0.3328 AML other m 2019-11-15T22:11:51.78
IV.TRIF.CHN. ML:2.0 0.0003229932 0.1536 AML other m 2019-11-15T22:11:55.95
IV.TRIF.CHE. ML:1.9 0.00025192705000000006 0.1664 AML other m 2019-11-15T22:11:56.19
IV.MAGO.CHE. ML:1.8 0.0002048838 0.1152 AML other m 2019-11-15T22:11:56.61
IV.MAGO.CHN. ML:1.8 0.0001827017 0.1536 AML other m 2019-11-15T22:11:59.13
IV.PII.HHN. ML:1.6 0.00007765823999999998 0.8448 AML other m 2019-11-15T22:12:01.48
IV.PII.HHE. ML:1.4 0.000048470865 0.3712 AML other m 2019-11-15T22:12:03.72
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