Earthquake with magnitude of ML 1.2 on date 09-12-2019 and time 12:40:23 (Italy) in region 3 km W Scarperia e San Piero (FI)

A magnitude ML 1.2 earthquake occured in region: 3 km W Scarperia e San Piero (FI), on

  • 09-12-2019 11:40:23 (UTC)
  • 09-12-2019 12:40:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.97, 11.29 at 10 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
Scarperia e San Piero FI 3 12217 12217
Barberino di Mugello FI 5 10836 23053
Vaglia FI 7 5073 28126
Borgo San Lorenzo FI 8 18211 46337
Vaiano PO 14 9895 56232
Vernio PO 14 6060 62292
Vicchio FI 15 8044 70336
Calenzano FI 15 17489 87825
Cantagallo PO 16 3105 90930
Sesto Fiorentino FI 17 48958 139888
Firenzuola FI 18 4726 144614
Fiesole FI 18 13969 158583
Prato PO 19 191150 349733

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NE of Prato (191150 inhabitants)
23 Km N of Firenze (382808 inhabitants)
25 Km NE of Scandicci (50609 inhabitants)
30 Km E of Pistoia (90315 inhabitants)
54 Km SW of Imola (69797 inhabitants)
58 Km S of Bologna (386663 inhabitants)
59 Km SW of Faenza (58541 inhabitants)
65 Km E of Lucca (89046 inhabitants)
66 Km W of Forlì (117913 inhabitants)
73 Km N of Siena (53903 inhabitants)
73 Km NW of Arezzo (99543 inhabitants)
77 Km E of Pisa (89158 inhabitants)
78 Km W of Cesena (96758 inhabitants)
81 Km SE of Modena (184973 inhabitants)
84 Km E of Viareggio (62467 inhabitants)
88 Km SW of Ravenna (159116 inhabitants)
92 Km NE of Livorno (159219 inhabitants)
92 Km E of Massa (69479 inhabitants)
96 Km SE of Carpi (70699 inhabitants)
96 Km E of Carrara (63133 inhabitants)
97 Km SE of Reggio nell'Emilia (171345 inhabitants)
100 Km S of Ferrara (133155 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 1.2 2019-12-09
11:40:23
43.97 11.29 10 2019-12-09
11:45:22
Sala Sismica INGV-Roma 74479761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-09 11:40:23 ± 0.58
Latitude 43.97 ± 0.04
Longitude 11.29 ± 0.03
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 74479761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4763
Semi-minor axis of confidence ellipse (meter) 722
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 335
Circular confidence region, given by single value of horizontal uncertainty (meter) 4760
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 235
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.45
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.3921
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 74479761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-09 11:45:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.POPM.HHZ. 2019-12-09T11:40:37.38 0.6 undecidable manual S 281 0.3921 50 -0.05 48
GU.POPM.HHZ. 2019-12-09T11:40:31.49 0.6 undecidable manual P 281 0.3921 50 0.09 48
IV.MPPT.EHZ. 2019-12-09T11:40:30.21 0.1 undecidable manual S 265 0.1466 122 0.41 93
IV.SEI.HHZ. 2019-12-09T11:40:28.12 0.1 undecidable manual S 30 0.0953 134 -0.13 100
IV.MOCL.EHZ. 2019-12-09T11:40:27.82 0.1 undecidable manual S 293 0.0872 136 -0.2 99
SI.KOSI.HHZ. 2019-12-09T11:40:26.00 1.0 negative manual Pg 2.71 0
IV.SEI.HHZ. 2019-12-09T11:40:26.35 0.1 undecidable manual P 30 0.0953 134 0.26 97
IV.MOCL.EHZ. 2019-12-09T11:40:26.29 0.1 undecidable manual P 293 0.0872 136 0.32 96
IV.MPPT.EHZ. 2019-12-09T11:40:26.23 0.1 undecidable manual P 265 0.1466 122 -0.76 83
IV.BRSN.EHZ. 2019-12-09T11:40:13.35 3.0 undecidable manual S -0.11 0
IV.NDIM.HNZ. 2019-12-09T11:39:59.27 0.6 undecidable manual Pn -0.01 0.79
IV.LMD.HHZ. 2019-12-09T11:39:59.98 0.6 undecidable manual Pg 1.16 0.46
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NDIM.HHE. ML:2.8 0.0005901573 0.0832 AML other m 2019-12-09T11:40:00.53
IV.NDIM.HHN. ML:2.7 0.0005045953 0.3584 AML other m 2019-12-09T11:40:27.23
IV.NDIM.HNE. ML:2.9 0.00072217815 0.0576 AML other m 2019-12-09T11:40:00.53
IV.NDIM.HNN. ML:2.8 0.0006078296 0.576 AML other m 2019-12-09T11:40:22.00
IV.LMD.HHE. ML:1 4.165719E-5 0.2176 AML other m 2019-12-09T11:40:06.86
IV.LMD.HHN. ML:1 4.7126365E-5 0.2816 AML other m 2019-12-09T11:40:05.53
IV.MPPT.EHE. ML:1.2 0.00012969305 0.2176 AML other m 2019-12-09T11:40:30.67
IV.MPPT.EHN. ML:1.2 0.000153769 0.2624 AML other m 2019-12-09T11:40:30.93
IV.MOCL.EHE. ML:1.6 0.00057085725 0.2176 AML other m 2019-12-09T11:40:28.10
IV.MOCL.EHN. ML:1.6 0.00059266065 0.1408 AML other m 2019-12-09T11:40:27.00
IV.SEI.HHE. ML:0.9 8.9854445E-5 0.1344 AML other m 2019-12-09T11:40:28.32
IV.SEI.HHN. ML:1.3 0.0002428709 0.16 AML other m 2019-12-09T11:40:28.37
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