Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 09-12-2019 and time 04:41:48 (Italy) in region 5 km NW Scarperia e San Piero (FI)

A magnitude ML 1.5 earthquake occured in region: 5 km NW Scarperia e San Piero (FI), on

  • 09-12-2019 03:41:48 (UTC)
  • 09-12-2019 04:41:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0030, 11.3020 at 6 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
Scarperia e San Piero FI 5 12217 12217
Barberino di Mugello FI 5 10836 23053
Borgo San Lorenzo FI 9 18211 41264
Vaglia FI 11 5073 46337
Vernio PO 13 6060 52397
Firenzuola FI 14 4726 57123
Vaiano PO 15 9895 67018
Vicchio FI 15 8044 75062
Cantagallo PO 16 3105 78167
Calenzano FI 19 17489 95656
Castiglione dei Pepoli BO 20 5648 101304

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NE of Prato (191150 inhabitants)
26 Km N of Firenze (382808 inhabitants)
29 Km NE of Scandicci (50609 inhabitants)
32 Km E of Pistoia (90315 inhabitants)
51 Km SW of Imola (69797 inhabitants)
55 Km S of Bologna (386663 inhabitants)
56 Km SW of Faenza (58541 inhabitants)
64 Km W of Forlì (117913 inhabitants)
66 Km E of Lucca (89046 inhabitants)
76 Km NW of Arezzo (99543 inhabitants)
76 Km N of Siena (53903 inhabitants)
77 Km W of Cesena (96758 inhabitants)
78 Km SE of Modena (184973 inhabitants)
79 Km E of Pisa (89158 inhabitants)
85 Km SW of Ravenna (159116 inhabitants)
86 Km E of Viareggio (62467 inhabitants)
93 Km E of Massa (69479 inhabitants)
93 Km SE of Carpi (70699 inhabitants)
94 Km SE of Reggio nell'Emilia (171345 inhabitants)
94 Km NE of Livorno (159219 inhabitants)
96 Km S of Ferrara (133155 inhabitants)
97 Km E of Carrara (63133 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 1.5 2019-12-09
03:41:48		 44.0032 11.3023 6 2020-02-28
16:42:18		 Bollettino Sismico Italiano INGV 75428291
Reviewed
Rev100 		ML 1.5 2019-12-09
03:41:47		 44.0057 11.303 9 2019-12-09
05:00:26		 Sala Sismica INGV-Roma 74460421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-09 03:41:48 ± 0.11
Latitude 44.0032 ± 0.0045
Longitude 11.3023 ± 0.0063
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 75428291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 520
Semi-minor axis of confidence ellipse (meter) 271
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 49
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.06475
Epicentral distance of station farthest from the epicenter (degree) 0.41908
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 9
Type of magnitude ML
Reference to an origin 75428291
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-19 14:41:16

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 74460421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-09 05:00:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRMI.HHZ. 2019-12-09T03:42:00.07 0.3 undecidable manual S 228 34.6431 100 -0.24 70
IV.ZCCA.HNN. 2019-12-09T03:41:57.85 0.6 undecidable manual P 326 46.5201 50 0.47 43
IV.FIR.HHZ. 2019-12-09T03:41:57.74 0.6 undecidable manual S 188 25.6521 103 0.47 45
IV.FNVD.HHZ. 2019-12-09T03:41:56.29 0.6 undecidable manual S 322 23.1546 104 -0.15 48
IV.RUFI.EHZ. 2019-12-09T03:41:56.87 0.3 undecidable manual S 138 24.6531 103 -0.07 74
IV.MTRZ.HNN. 2019-12-09T03:41:55.67 0.6 undecidable manual P 16 35.742 99 0.29 46
IT.FIE.HGE. 2019-12-09T03:41:55.94 0.6 undecidable manual S 182 21.7671 105 -0.01 50
IV.MPPT.EHZ. 2019-12-09T03:41:54.61 0.3 undecidable manual S 253 17.6712 108 0.01 75
IV.CRMI.HHZ. 2019-12-09T03:41:54.78 0.3 negative manual P 228 34.6431 100 -0.38 68
IV.RUFI.EHZ. 2019-12-09T03:41:53.09 0.1 undecidable manual P 138 24.6531 103 -0.13 97
IV.FIR.HHZ. 2019-12-09T03:41:53.49 0.1 undecidable manual P 188 25.6521 103 0.08 98
IT.FIE.HGE. 2019-12-09T03:41:52.72 0.3 undecidable manual P 182 21.7671 105 0.07 74
IV.MOCL.EHZ. 2019-12-09T03:41:52.38 0.3 undecidable manual S 271 9.6792 121 0.31 72
IV.FNVD.HHZ. 2019-12-09T03:41:52.50 0.3 undecidable manual P 322 23.1546 104 -0.43 68
IV.MPPT.EHZ. 2019-12-09T03:41:51.83 0.1 positive manual P 253 17.6712 108 -0.04 100
IV.MOCL.EHZ. 2019-12-09T03:41:50.51 0.1 negative manual P 271 9.6792 121 0.1 100
IV.SEI.HHZ. 2019-12-09T03:41:48.74 3.0 undecidable manual S 7.1928 -2.63 0
IV.SEI.HHZ. 2019-12-09T03:41:47.25 3.0 undecidable manual P 7.1928 -2.75 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOCL.EHN. ML:2.0 0.0016122 0.3392 AML other m 2019-12-09T03:41:52.43
IV.MOCL.EHE. ML:2.1 0.002025061 0.24 AML other m 2019-12-09T03:41:53.01
IV.MPPT.EHN. ML:1.6 0.00040465185 0.3008 AML other m 2019-12-09T03:41:54.83
IV.MPPT.EHE. ML:1.6 0.0003904926 0.2 AML other m 2019-12-09T03:41:55.35
IV.RUFI.EHN. ML:1.1 0.000075300065 0.2208 AML other m 2019-12-09T03:41:57.01
IV.RUFI.EHE. ML:0.5 0.000020387185000000003 0.08 AML other m 2019-12-09T03:41:57.24
IV.FIR.HNN. ML:1.9 0.00049962045 0.0304 AML other m 2019-12-09T03:41:57.56
IV.CRMI.HNN. ML:1.4 0.000102169285 0.12 AML other m 2019-12-09T03:42:00.42
IV.CRMI.HHE. ML:1.2 0.000058197755 0.0192 AML other m 2019-12-09T03:42:00.44
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