Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 09-12-2019 and time 03:47:20 (Italy) in region 5 km N Scarperia e San Piero (FI)

A magnitude ML 1.0 earthquake occured in region: 5 km N Scarperia e San Piero (FI), on

  • 09-12-2019 02:47:20 (UTC)
  • 09-12-2019 03:47:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0110, 11.3150 at 7 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 6 10836 23053
Borgo San Lorenzo FI 9 18211 41264
Vaglia FI 12 5073 46337
Firenzuola FI 13 4726 51063
Vernio PO 14 6060 57123
Vicchio FI 15 8044 65167
Vaiano PO 16 9895 75062
Cantagallo PO 17 3105 78167
Castiglione dei Pepoli BO 20 5648 83815
Calenzano FI 20 17489 101304

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NE of Prato (191150 inhabitants)
27 Km N of Firenze (382808 inhabitants)
30 Km NE of Scandicci (50609 inhabitants)
33 Km E of Pistoia (90315 inhabitants)
50 Km SW of Imola (69797 inhabitants)
54 Km S of Bologna (386663 inhabitants)
55 Km SW of Faenza (58541 inhabitants)
63 Km W of Forlì (117913 inhabitants)
68 Km E of Lucca (89046 inhabitants)
76 Km W of Cesena (96758 inhabitants)
76 Km NW of Arezzo (99543 inhabitants)
77 Km N of Siena (53903 inhabitants)
77 Km SE of Modena (184973 inhabitants)
80 Km E of Pisa (89158 inhabitants)
84 Km SW of Ravenna (159116 inhabitants)
87 Km E of Viareggio (62467 inhabitants)
92 Km SE of Carpi (70699 inhabitants)
94 Km SE of Reggio nell'Emilia (171345 inhabitants)
94 Km E of Massa (69479 inhabitants)
95 Km S of Ferrara (133155 inhabitants)
95 Km NE of Livorno (159219 inhabitants)
98 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 1.0 2019-12-09
02:47:20		 44.0108 11.315 7 2020-02-28
16:42:26		 Bollettino Sismico Italiano INGV 76651711
Reviewed
Rev100 		ML 1.0 2019-12-09
02:47:20		 44.0142 11.3228 6 2019-12-09
03:33:32		 Sala Sismica INGV-Roma 74452141
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-12-09 02:47:20 ± 0.08
Latitude 44.0108 ± 0.0045
Longitude 11.3150 ± 0.0050
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 76651711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 396
Semi-minor axis of confidence ellipse (meter) 297
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 8
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 91
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 21
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) 0.05396
Epicentral distance of station farthest from the epicenter (degree) 0.41729
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 11
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 74452141
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-12-09 03:33:32

ML:1.0

Field Value
Value 1.0
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 76651711
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-02-19 16:24:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.BRIS.HNE. 2019-12-09T02:47:36.02 0.6 undecidable manual S 56 43.1235 50 0.9 37
GU.POPM.HHZ. 2019-12-09T02:47:35.17 0.3 undecidable manual S 275 44.622 50 -0.37 67
IV.CRMI.HNN. 2019-12-09T02:47:32.90 0.6 undecidable manual S 228 35.9418 101 -0.08 49
IV.LMD.HHZ. 2019-12-09T02:47:31.44 0.6 undecidable manual S 77 32.1456 102 -0.26 47
IV.FIR.HNE. 2019-12-09T02:47:30.12 0.3 undecidable manual S 190 26.6511 105 0.26 71
IV.ZCCA.HNN. 2019-12-09T02:47:30.09 0.6 undecidable manual P 325 46.3203 50 0.74 40
IV.RUFI.EHZ. 2019-12-09T02:47:29.05 0.1 undecidable manual S 141 24.6531 106 -0.14 98
IV.BRIS.HNE. 2019-12-09T02:47:28.94 0.3 undecidable manual P 56 43.1235 50 0.1 72
GU.POPM.HHZ. 2019-12-09T02:47:28.58 0.3 undecidable manual P 275 44.622 50 -0.51 65
IV.FNVD.HHZ. 2019-12-09T02:47:28.52 0.6 undecidable manual S 319 23.1546 107 -0.17 49
IT.FIE.HGZ. 2019-12-09T02:47:28.35 0.3 undecidable manual S 184 22.6551 107 -0.17 73
IV.MPPT.EHZ. 2019-12-09T02:47:27.31 0.3 undecidable manual S 252 18.87 111 0.03 76
IV.CRMI.HNN. 2019-12-09T02:47:27.45 0.1 undecidable manual P 228 35.9418 101 -0.16 95
IV.LMD.HHZ. 2019-12-09T02:47:26.58 0.1 undecidable manual P 77 32.1456 102 -0.29 93
IV.FIR.HNE. 2019-12-09T02:47:26.09 0.3 undecidable manual P 190 26.6511 105 0.28 71
IT.FIE.HGZ. 2019-12-09T02:47:25.04 0.3 undecidable manual P 184 22.6551 107 0 76
IV.RUFI.EHZ. 2019-12-09T02:47:25.47 0.1 negative manual P 141 24.6531 106 0.04 100
IV.FNVD.HHZ. 2019-12-09T02:47:24.98 0.1 undecidable manual P 319 23.1546 107 -0.16 98
IV.MOCL.EHZ. 2019-12-09T02:47:24.89 0.1 undecidable manual S 267 10.6782 124 0.14 100
IV.MPPT.EHZ. 2019-12-09T02:47:24.44 0.1 undecidable manual P 252 18.87 111 0.12 99
IV.MOCL.EHZ. 2019-12-09T02:47:23.12 0.1 negative manual P 267 10.6782 124 0.26 98
IV.SEI.HHZ. 2019-12-09T02:47:20.99 3.0 undecidable manual S 5.994 -2.51 0
IV.SEI.HHZ. 2019-12-09T02:47:19.59 3.0 undecidable manual P 5.994 -2.55 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MOCL.EHN. ML:1.4 0.00038363065000000004 0.1792 AML other m 2019-12-09T02:47:25.28
IV.MOCL.EHE. ML:1.2 0.00022236530000000002 1.8208 AML other m 2019-12-09T02:47:25.97
IV.MPPT.EHE. ML:1.0 0.000090433985 0.1792 AML other m 2019-12-09T02:47:28.10
IV.MPPT.EHN. ML:1.1 0.00010610032 0.16 AML other m 2019-12-09T02:47:28.03
IV.LMD.HHN. ML:1.3 0.00008272550000000001 0.24 AML other m 2019-12-09T02:47:31.78
IV.RUFI.EHE. ML:0.8 0.000033156138 0.28 AML other m 2019-12-09T02:47:32.21
IV.LMD.HHE. ML:0.9 0.00003719624 0.2208 AML other m 2019-12-09T02:47:33.16
IV.RUFI.EHN. ML:0.6 0.000025595789999999996 0.88 AML other m 2019-12-09T02:47:35.49
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