Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 14-03-2021 and time 12:47:52 (Italy) in region 4 km S Firenzuola (FI)

A magnitude ML 2.0 earthquake occured in region: 4 km S Firenzuola (FI), on

  • 14-03-2021 11:47:52 (UTC)
  • 14-03-2021 12:47:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0810, 11.3700 at 11 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
Firenzuola FI 4 4726 4726
Scarperia e San Piero FI 14 12217 16943
Barberino di Mugello FI 14 10836 27779
Borgo San Lorenzo FI 14 18211 45990
Palazzuolo sul Senio FI 15 1154 47144
Monghidoro BO 16 3749 50893
Vernio PO 17 6060 56953
Vicchio FI 18 8044 64997
Castel del Rio BO 18 1246 66243
Castiglione dei Pepoli BO 19 5648 71891
San Benedetto Val di Sambro BO 19 4315 76206
Marradi FI 20 3139 79345

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NE of Prato (191150 inhabitants)
36 Km N of Firenze (382808 inhabitants)
39 Km NE of Scandicci (50609 inhabitants)
40 Km E of Pistoia (90315 inhabitants)
41 Km SW of Imola (69797 inhabitants)
46 Km S of Bologna (386663 inhabitants)
47 Km W of Faenza (58541 inhabitants)
56 Km W of Forlì (117913 inhabitants)
70 Km W of Cesena (96758 inhabitants)
72 Km SE of Modena (184973 inhabitants)
74 Km E of Lucca (89046 inhabitants)
76 Km W of Ravenna (159116 inhabitants)
80 Km NW of Arezzo (99543 inhabitants)
85 Km N of Siena (53903 inhabitants)
86 Km S of Ferrara (133155 inhabitants)
87 Km SE of Carpi (70699 inhabitants)
88 Km E of Pisa (89158 inhabitants)
90 Km SE of Reggio nell'Emilia (171345 inhabitants)
93 Km E of Viareggio (62467 inhabitants)
96 Km W of Rimini (147750 inhabitants)
98 Km E of Massa (69479 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 2.0 2021-03-14
11:47:52		 44.0813 11.3702 11 2021-07-12
16:55:02		 Bollettino Sismico Italiano INGV 88161741
Reviewed
Rev100 		ML 2.0 2021-03-14
11:47:52		 44.081 11.3667 11 2021-03-14
12:05:57		 Sala Sismica INGV-Roma 88118221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-14 11:47:52 ± 0.05
Latitude 44.0813 ± 0.0027
Longitude 11.3702 ± 0.0038
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88161741

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 335
Semi-minor axis of confidence ellipse (meter) 280
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 328
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 46
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.61064
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 16
Type of magnitude ML
Reference to an origin 88161741
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-18 09:51:29

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 88118221
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-14 12:05:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLLN.EHZ. 2021-03-14T11:50:33.21 3.0 undecidable manual Sn -5.99 0
IV.SCHR.EHZ. 2021-03-14T11:50:32.52 3.0 undecidable manual Sg 22.940001 0
IV.SGO.HNZ. 2021-03-14T11:49:54.89 3.0 undecidable manual Sn 1.26 0
IV.MTGR.HHZ. 2021-03-14T11:49:43.25 3.0 undecidable manual Pg 19.709999 0
IV.SPS2.HHZ. 2021-03-14T11:49:38.46 3.0 negative manual Pg 17.799999 0
IV.SACR.HHZ. 2021-03-14T11:49:37.08 3.0 undecidable manual Sn 6.3 0
IV.CAGR.HHZ. 2021-03-14T11:49:35.64 3.0 undecidable manual Pn 3.8 0
IV.PTRJ.HNZ. 2021-03-14T11:49:32.68 3.0 undecidable manual Sn 3.38 0
IV.MCEL.HHZ. 2021-03-14T11:49:18.94 3.0 undecidable manual Pg 12.98 0
IT.VRB.HGZ. 2021-03-14T11:49:07.75 3.0 undecidable manual Sn -0.19 0
IV.VARE.HHZ. 2021-03-14T11:49:03.99 3.0 undecidable manual Sn -0.23 0
IX.CSG3.HNZ.01 2021-03-14T11:48:57.89 3.0 undecidable manual Pn -0.62 0
IV.CFMN.HHZ. 2021-03-14T11:48:49.39 3.0 negative manual Pn -0.49 0
IV.ZEN8.EHZ. 2021-03-14T11:48:40.51 3.0 undecidable manual S -0.45 0
IV.BRES.EHZ. 2021-03-14T11:48:37.33 3.0 undecidable manual Pg 4.16 0
ST.CARE.EHZ. 2021-03-14T11:48:34.18 3.0 negative manual Pg 4.26 0
IV.GAVE.EHZ. 2021-03-14T11:48:26.04 3.0 negative manual Pg 4.21 0
IV.MMUR.HNZ. 2021-03-14T11:48:20.02 3.0 undecidable manual P 4.26 0
IV.CESI.HHZ. 2021-03-14T11:48:20.07 3.0 undecidable manual P 1.39 0
IV.ASQU.HHZ. 2021-03-14T11:48:07.17 0.3 undecidable manual S 133 46.0206 50 0.31 66
IV.SFI.EHZ. 2021-03-14T11:48:06.32 0.3 undecidable manual S 117 42.8238 50 0.32 66
IV.BRIS.HHZ. 2021-03-14T11:48:04.20 0.3 undecidable manual S 63 35.3424 50 0.2 69
IV.CSNT.HHZ. 2021-03-14T11:48:04.10 0.3 undecidable manual P 185 67.7766 50 0.17 65
IV.BDI.HNZ. 2021-03-14T11:48:02.84 0.6 undecidable manual P 268 61.7937 50 -0.17 44
IV.RINC.HHZ. 2021-03-14T11:48:02.18 0.3 undecidable manual S 139 28.749 50 -0.06 71
IV.RUFI.EHZ. 2021-03-14T11:48:02.09 0.3 undecidable manual S 158 29.2485 50 -0.28 68
IV.MPPT.EHZ. 2021-03-14T11:48:01.54 0.1 undecidable manual S 238 26.2515 50 -0.03 96
IV.LMD.HHZ. 2021-03-14T11:48:01.45 0.3 undecidable manual S 91 26.8509 50 -0.29 68
IV.ASQU.HHZ. 2021-03-14T11:48:00.48 0.1 undecidable manual P 133 46.0206 50 -0.1 91
IV.ZCCA.HNZ. 2021-03-14T11:48:00.33 0.6 undecidable manual P 314 43.3233 50 0.17 45
IV.SFI.EHZ. 2021-03-14T11:47:59.94 0.1 undecidable manual P 117 42.8238 50 -0.14 91
IV.MOCL.EHZ. 2021-03-14T11:47:59.01 0.3 undecidable manual S 241 17.2716 122 -0.05 73
IV.BRIS.HHZ. 2021-03-14T11:47:59.28 0.3 undecidable manual P 63 35.3424 50 0.35 66
IT.FIE.HGE. 2021-03-14T11:47:58.20 0.1 undecidable manual P 191 31.0467 50 -0.07 95
IV.LMD.HHZ. 2021-03-14T11:47:57.26 0.3 undecidable manual P 91 26.8509 50 -0.37 67
IV.MTRZ.HNZ. 2021-03-14T11:47:57.63 0.6 undecidable manual P 10 26.0517 50 0.13 47
IV.VISG.HHZ. 2021-03-14T11:47:57.68 0.3 undecidable manual S 23 12.9759 129 -0.15 72
IV.RUFI.EHZ. 2021-03-14T11:47:57.89 0.1 negative manual P 158 29.2485 50 -0.1 94
IV.MPPT.EHZ. 2021-03-14T11:47:57.61 0.1 positive manual P 238 26.2515 50 0.08 95
IV.RONT.HHZ. 2021-03-14T11:47:57.48 0.1 undecidable manual S 153 10.9779 134 0.17 96
IV.RINC.HHZ. 2021-03-14T11:47:57.80 0.1 negative manual P 139 28.749 50 -0.12 94
IV.MOCL.EHZ. 2021-03-14T11:47:56.26 0.1 positive manual P 241 17.2716 122 0.18 95
IV.SEI.HHZ. 2021-03-14T11:47:55.64 0.1 undecidable manual S 197 3.1968 164 -0.22 96
IV.RONT.HHZ. 2021-03-14T11:47:55.26 0.1 undecidable manual P 153 10.9779 134 0.19 95
IV.VISG.HHZ. 2021-03-14T11:47:55.36 0.1 positive manual P 23 12.9759 129 -0.01 99
IV.SEI.HHZ. 2021-03-14T11:47:54.26 0.1 undecidable manual P 197 3.1968 164 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:1.9 0.0007492830999999999 1.3824 AML other m 2021-03-14T11:47:57.15
IV.MOCL.EHN. ML:2.2 0.00134 0.26 AML other m 2021-03-14T11:47:59.14
IV.MOCL.EHE. ML:2.3 0.001645 0.26 AML other m 2021-03-14T11:47:59.27
IV.LMD.HHN. ML:2.1 0.000679 0.26 AML other m 2021-03-14T11:48:01.71
IV.MPPT.EHN. ML:1.9 0.00045999999999999996 1.5 AML other m 2021-03-14T11:48:02.22
IV.RUFI.EHE. ML:2.0 0.000584 0.32 AML other m 2021-03-14T11:48:02.43
IV.MPPT.EHE. ML:2.0 0.000593 0.6 AML other m 2021-03-14T11:48:02.77
IV.RINC.HHE. ML:1.8 0.0003285 1.1 AML other m 2021-03-14T11:48:02.93
IV.RUFI.EHN. ML:1.7 0.000264 0.96 AML other m 2021-03-14T11:48:02.99
IV.RINC.HHN. ML:2.0 0.000494 1.02 AML other m 2021-03-14T11:48:03.51
IV.LMD.HHE. ML:1.9 0.000449 0.78 AML other m 2021-03-14T11:48:03.01
IV.VISG.HHN. ML:1.9 0.0008505 1.56 AML other m 2021-03-14T11:48:03.03
IV.BRIS.HHN. ML:2.1 0.0005495 0.34 AML other m 2021-03-14T11:48:05.60
IV.BRIS.HHE. ML:2.1 0.0005151422 0.3392 AML other m 2021-03-14T11:48:05.57
IV.CSNT.HHE. ML:2.1 0.00022049999999999997 0.56 AML other m 2021-03-14T11:48:13.91
IV.CSNT.HHN. ML:1.9 0.00015118370000000001 0.2816 AML other m 2021-03-14T11:48:14.80
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
Waveforms Seismic signals in miniseed + resp format Download