Earthquake with magnitude of ML 1.4 on date 08-12-2019 and time 20:55:54 (Italy) in region 9 km SW Firenzuola (FI)

A magnitude ML 1.4 earthquake occured in region: 9 km SW Firenzuola (FI), on

  • 08-12-2019 19:55:54 (UTC)
  • 08-12-2019 20:55:54 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.04, 11.34 at 2 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Firenzuola FI 9 4726 4726
Scarperia e San Piero FI 9 12217 16943
Barberino di Mugello FI 10 10836 27779
Borgo San Lorenzo FI 11 18211 45990
Vernio PO 15 6060 52050
Vicchio FI 16 8044 60094
Vaglia FI 16 5073 65167
Palazzuolo sul Senio FI 18 1154 66321
Castiglione dei Pepoli BO 19 5648 71969
Cantagallo PO 19 3105 75074
Vaiano PO 19 9895 84969
Monghidoro BO 20 3749 88718

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NE of Prato (191150 inhabitants)
31 Km N of Firenze (382808 inhabitants)
34 Km NE of Scandicci (50609 inhabitants)
36 Km E of Pistoia (90315 inhabitants)
45 Km SW of Imola (69797 inhabitants)
50 Km S of Bologna (386663 inhabitants)
51 Km SW of Faenza (58541 inhabitants)
59 Km W of Forlì (117913 inhabitants)
71 Km E of Lucca (89046 inhabitants)
73 Km W of Cesena (96758 inhabitants)
75 Km SE of Modena (184973 inhabitants)
77 Km NW of Arezzo (99543 inhabitants)
80 Km SW of Ravenna (159116 inhabitants)
81 Km N of Siena (53903 inhabitants)
84 Km E of Pisa (89158 inhabitants)
90 Km E of Viareggio (62467 inhabitants)
90 Km SE of Carpi (70699 inhabitants)
91 Km S of Ferrara (133155 inhabitants)
92 Km SE of Reggio nell'Emilia (171345 inhabitants)
96 Km E of Massa (69479 inhabitants)
98 Km W of Rimini (147750 inhabitants)
99 Km NE of Livorno (159219 inhabitants)
100 Km E of Carrara (63133 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.4 2019-12-08
19:55:54
44.04 11.34 2 2019-12-08
20:15:49
Sala Sismica INGV-Roma 74441311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-08 19:55:54 ± 0.11
Latitude 44.04 ± 0.01
Longitude 11.34 ± 0.01
Depth (km) 2 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74441311

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 710
Semi-minor axis of confidence ellipse (meter) 530
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 348
Circular confidence region, given by single value of horizontal uncertainty (meter) 710
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 53
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.01439
Epicentral distance of station farthest from the epicenter (degree) 0.42178
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.5
Num. used stations 8
Type of magnitude ML
Reference to an origin 74441311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-08 20:15:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SFI.EHN. 2019-12-08T19:56:03.47 1.0 undecidable manual P 111 0.3876 92 0.17 24
IV.RUFI.EHZ. 2019-12-08T19:56:03.71 0.3 undecidable manual S 150 0.2383 93 -0.15 75
GU.POPM.HHE. 2019-12-08T19:56:03.92 1.0 undecidable manual P 270 0.4218 92 -0.14 24
IV.ZCCA.HHZ. 2019-12-08T19:56:03.73 1.0 undecidable manual P 319 0.4038 92 0.05 25
IV.MPPT.EHZ. 2019-12-08T19:56:02.02 0.6 undecidable manual S 245 0.2023 94 -0.46 47
IV.BRIS.HHE. 2019-12-08T19:56:02.13 1.0 undecidable manual P 59 0.3525 92 -0.39 23
IV.LMD.HHZ. 2019-12-08T19:56:01.20 0.6 undecidable manual P 83 0.2626 93 0.67 43
IV.FIR.HHZ. 2019-12-08T19:56:00.71 1.0 undecidable manual P 193 0.277 93 -0.14 25
IV.MTRZ.HNZ. 2019-12-08T19:56:00.84 1.0 undecidable manual P 12 0.2743 93 0.05 25
IV.RUFI.EHZ. 2019-12-08T19:56:00.13 0.1 positive manual P 150 0.2383 93 0.15 100
IV.MOCL.EHZ. 2019-12-08T19:55:59.67 0.3 undecidable manual S 252 0.1241 96 0.19 76
IT.FIE.HGZ. 2019-12-08T19:55:59.78 1.0 undecidable manual P 189 0.2392 93 -0.24 25
IV.MPPT.EHZ. 2019-12-08T19:55:59.07 1.0 undecidable manual P 245 0.2023 94 -0.11 25
IV.MOCL.EHZ. 2019-12-08T19:55:57.83 0.3 undecidable manual P 252 0.1241 96 0.38 73
IV.SEI.HHE. 2019-12-08T19:55:55.73 0.6 undecidable manual S 46 0.0144 134 0.28 51
IV.SEI.HHE. 2019-12-08T19:55:54.34 0.3 undecidable manual P 46 0.0144 134 -0.78 65
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LMD.HHN. ML:0 6.9610375E-5 0.2304 AML other m 2019-12-08T19:56:06.32
IV.LMD.HHE. ML:0 4.5993635E-5 0.32 AML other m 2019-12-08T19:56:07.35
IV.RUFI.EHE. ML:0.7 2.915895E-5 0.8448 AML other m 2019-12-08T19:56:09.40
IV.RUFI.EHN. ML:0.7 3.0497955E-5 1.5232 AML other m 2019-12-08T19:56:12.17
IV.FIR.HNE. ML:1.7 0.0002253938 0.1024 AML other m 2019-12-08T19:56:06.41
IV.FIR.HNN. ML:1.8 0.00034540435 0.0896 AML other m 2019-12-08T19:56:10.18
IV.FIR.HHE. ML:1.7 0.0002373354 0.0512 AML other m 2019-12-08T19:56:09.41
IV.FIR.HHN. ML:1.9 0.0003660421 0.0768 AML other m 2019-12-08T19:56:12.98
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