Earthquake with magnitude of ML 2.0 on date 14-03-2021 and time 11:47:52 (UTC) 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) 44.081, 11.37 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.

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

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
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
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
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

Field Value
Value 2
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

Field Value
Value 2
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 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.CESI.HHZ. 2021-03-14T11:48:20.07 3.0 undecidable manual P 1.39 0
IV.MMUR.HNZ. 2021-03-14T11:48:20.02 3.0 undecidable manual P 4.26 0
IV.ASQU.HHZ. 2021-03-14T11:48:07.17 0.3 undecidable manual S 133 0.4146 50 0.31 66
IV.SFI.EHZ. 2021-03-14T11:48:06.32 0.3 undecidable manual S 117 0.3858 50 0.32 66
IV.BRIS.HHZ. 2021-03-14T11:48:04.20 0.3 undecidable manual S 63 0.3184 50 0.2 69
IV.CSNT.HHZ. 2021-03-14T11:48:04.10 0.3 undecidable manual P 185 0.6106 50 0.17 65
IV.RUFI.EHZ. 2021-03-14T11:48:02.09 0.3 undecidable manual S 158 0.2635 50 -0.28 68
IV.BDI.HNZ. 2021-03-14T11:48:02.84 0.6 undecidable manual P 268 0.5567 50 -0.17 44
IV.RINC.HHZ. 2021-03-14T11:48:02.18 0.3 undecidable manual S 139 0.259 50 -0.06 71
IV.LMD.HHZ. 2021-03-14T11:48:01.45 0.3 undecidable manual S 91 0.2419 50 -0.29 68
IV.MPPT.EHZ. 2021-03-14T11:48:01.54 0.1 undecidable manual S 238 0.2365 50 -0.03 96
IV.ZCCA.HNZ. 2021-03-14T11:48:00.33 0.6 undecidable manual P 314 0.3903 50 0.17 45
IV.ASQU.HHZ. 2021-03-14T11:48:00.48 0.1 undecidable manual P 133 0.4146 50 -0.1 91
IV.SFI.EHZ. 2021-03-14T11:47:59.94 0.1 undecidable manual P 117 0.3858 50 -0.14 91
IV.MOCL.EHZ. 2021-03-14T11:47:59.01 0.3 undecidable manual S 241 0.1556 122 -0.05 73
IV.BRIS.HHZ. 2021-03-14T11:47:59.28 0.3 undecidable manual P 63 0.3184 50 0.35 66
IT.FIE.HGE. 2021-03-14T11:47:58.20 0.1 undecidable manual P 191 0.2797 50 -0.07 95
IV.RONT.HHZ. 2021-03-14T11:47:57.48 0.1 undecidable manual S 153 0.0989 134 0.17 96
IV.RINC.HHZ. 2021-03-14T11:47:57.80 0.1 negative manual P 139 0.259 50 -0.12 94
IV.LMD.HHZ. 2021-03-14T11:47:57.26 0.3 undecidable manual P 91 0.2419 50 -0.37 67
IV.VISG.HHZ. 2021-03-14T11:47:57.68 0.3 undecidable manual S 23 0.1169 129 -0.15 72
IV.RUFI.EHZ. 2021-03-14T11:47:57.89 0.1 negative manual P 158 0.2635 50 -0.1 94
IV.MTRZ.HNZ. 2021-03-14T11:47:57.63 0.6 undecidable manual P 10 0.2347 50 0.13 47
IV.MPPT.EHZ. 2021-03-14T11:47:57.61 0.1 positive manual P 238 0.2365 50 0.08 95
IV.MOCL.EHZ. 2021-03-14T11:47:56.26 0.1 positive manual P 241 0.1556 122 0.18 95
IV.RONT.HHZ. 2021-03-14T11:47:55.26 0.1 undecidable manual P 153 0.0989 134 0.19 95
IV.SEI.HHZ. 2021-03-14T11:47:55.64 0.1 undecidable manual S 197 0.0288 164 -0.22 96
IV.VISG.HHZ. 2021-03-14T11:47:55.36 0.1 positive manual P 23 0.1169 129 -0.01 99
IV.SEI.HHZ. 2021-03-14T11:47:54.26 0.1 undecidable manual P 197 0.0288 164 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.VISG.HHE. ML:0 0.0008635 0.22 AML other m 2021-03-14T11:48:03.98
IV.RONT.HHN. ML:2.8 0.007965 1.5 AML other m 2021-03-14T11:47:58.06
IV.RONT.HHE. ML:2.9 0.008645 0.22 AML other m 2021-03-14T11:47:58.07
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 0.00046 1.5 AML other m 2021-03-14T11:48:02.22
IV.RUFI.EHE. ML:2 0.000584 0.32 AML other m 2021-03-14T11:48:02.43
IV.MPPT.EHE. ML:2 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 0.000494 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 0.0002205 0.56 AML other m 2021-03-14T11:48:13.91
IV.CSNT.HHN. ML:1.9 0.0001511837 0.2816 AML other m 2021-03-14T11:48:14.80
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
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