Earthquake with magnitude of ML 0.9 on date 14-12-2020 and time 00:31:45 (Italy) in region 2 km NE Montelupo Fiorentino (FI)

A magnitude ML 0.9 earthquake occured in region: 2 km NE Montelupo Fiorentino (FI), on

  • 13-12-2020 23:31:45 (UTC)
  • 14-12-2020 00:31:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.7440, 11.0380 at 8 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
Montelupo Fiorentino FI 2 14098 14098
Capraia e Limite FI 5 7670 21768
Lastra a Signa FI 6 20156 41924
Signa FI 7 19179 61103
Empoli FI 8 48109 109212
Carmignano PO 8 14450 123662
Poggio a Caiano PO 8 10007 133669
Vinci FI 10 14604 148273
Montespertoli FI 12 13537 161810
Scandicci FI 12 50609 212419
Campi Bisenzio FI 12 46166 258585
Quarrata PT 13 26190 284775
Cerreto Guidi FI 13 10870 295645
Lamporecchio PT 14 7508 303153
San Casciano in Val di Pesa FI 15 17062 320215
Larciano PT 16 6394 326609
Prato PO 16 191150 517759
Castelfiorentino FI 16 17504 535263
Sesto Fiorentino FI 16 48958 584221
San Miniato PI 17 27934 612155
Calenzano FI 17 17489 629644
Firenze FI 18 382808 1012452
Agliana PT 18 17525 1029977
Fucecchio FI 18 23618 1053595
Impruneta FI 19 14615 1068210

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km W of Scandicci (50609 inhabitants)
16 Km SW of Prato (191150 inhabitants)
18 Km W of Firenze (382808 inhabitants)
23 Km SE of Pistoia (90315 inhabitants)
45 Km E of Lucca (89046 inhabitants)
51 Km E of Pisa (89158 inhabitants)
53 Km NW of Siena (53903 inhabitants)
62 Km E of Livorno (159219 inhabitants)
65 Km E of Viareggio (62467 inhabitants)
75 Km W of Arezzo (99543 inhabitants)
79 Km E of Massa (69479 inhabitants)
84 Km E of Carrara (63133 inhabitants)
87 Km SW of Imola (69797 inhabitants)
87 Km S of Bologna (386663 inhabitants)
91 Km SW of Faenza (58541 inhabitants)
96 Km SW of Forlì (117913 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
Reviewed
Rev100
ML 0.9 2020-12-13
23:31:45
43.7438 11.0383 9 2020-12-13
23:42:05
Sala Sismica INGV-Roma 85412191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-13 23:31:45 ± 0.11
Latitude 43.7438 ± 0.0063
Longitude 11.0383 ± 0.0062
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 85412191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 621
Semi-minor axis of confidence ellipse (meter) 480
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 12
Circular confidence region, given by single value of horizontal uncertainty (meter) 620.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 121
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.37861
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:0.9

Field Value
Value 0.9
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 85412191
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-12-13 23:42:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.POPM.HHZ. 2020-12-13T23:32:00.00 0.1 undecidable manual S 326 40.3263 50 0.28 90
IV.RONT.HHZ. 2020-12-13T23:32:00.78 0.1 undecidable manual S 49 42.0246 50 0.61 82
IV.PII.HHZ. 2020-12-13T23:31:59.41 0.1 undecidable manual S 267 41.2254 50 -0.56 84
IV.RUFI.EHZ. 2020-12-13T23:31:58.98 0.1 undecidable manual S 74 39.1275 50 -0.44 87
IV.CSNT.HHZ. 2020-12-13T23:31:58.34 0.1 undecidable manual S 146 36.2415 50 -0.28 90
IV.MOCL.EHZ. 2020-12-13T23:31:56.64 0.1 undecidable manual S 21 31.1466 105 -0.48 87
IV.RONT.HHZ. 2020-12-13T23:31:54.63 0.1 undecidable manual P 49 42.0246 50 0.48 86
IV.MPPT.EHZ. 2020-12-13T23:31:54.62 0.1 undecidable manual S 10 24.0537 109 -0.17 95
IV.PII.HHZ. 2020-12-13T23:31:54.36 0.1 undecidable manual P 267 41.2254 50 0.32 89
IV.RUFI.EHZ. 2020-12-13T23:31:53.49 0.1 undecidable manual P 74 39.1275 50 -0.22 91
IV.CSNT.HHZ. 2020-12-13T23:31:53.47 0.1 undecidable manual P 146 36.2415 50 0.21 92
GU.POPM.HHZ. 2020-12-13T23:31:53.81 0.1 undecidable manual P 326 40.3263 50 -0.08 94
IT.FIE.HGZ. 2020-12-13T23:31:53.91 0.3 undecidable manual S 71 21.6672 111 -0.1 72
IV.MOCL.EHZ. 2020-12-13T23:31:52.21 0.1 undecidable manual P 21 31.1466 105 -0.18 93
IV.FIR.HHZ. 2020-12-13T23:31:52.92 0.3 undecidable manual S 79 17.6712 116 0.19 72
IV.MPPT.EHZ. 2020-12-13T23:31:51.05 0.1 undecidable manual P 10 24.0537 109 0 98
IV.FIR.HHZ. 2020-12-13T23:31:50.07 0.1 undecidable manual P 79 17.6712 116 0.21 95
IT.FIE.HGZ. 2020-12-13T23:31:50.54 0.3 undecidable manual P 71 21.6672 111 -0.05 73
IV.CRMI.HHZ. 2020-12-13T23:31:49.88 0.1 undecidable manual S 321 7.4814 139 0.04 100
IV.CRMI.HHZ. 2020-12-13T23:31:48.41 0.1 undecidable manual P 321 7.4814 139 0.22 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FIR.HHN. ML:1.5 0.000253 0.18 AML other m 2020-12-13T23:31:53.03
IV.CRMI.HHE. ML:0.3 0.000034289189999999996 0.384 AML other m 2020-12-13T23:31:50.14
IV.CRMI.HHN. ML:0.3 0.00003462331 0.2176 AML other m 2020-12-13T23:31:49.92
IV.CRMI.HNE. ML:0.7 0.00008707732 0.4864 AML other m 2020-12-13T23:31:50.14
IV.CRMI.HNN. ML:0.7 0.00007953917499999999 0.4736 AML other m 2020-12-13T23:31:50.16
IV.FIR.HHE. ML:1.7 0.0003951445 0.64 AML other m 2020-12-13T23:31:52.00
IV.FIR.HNE. ML:1.7 0.00041456885 0.64 AML other m 2020-12-13T23:31:52.00
IV.FIR.HNN. ML:1.4 0.00023728155000000002 0.1792 AML other m 2020-12-13T23:31:53.03
IV.MPPT.EHE. ML:0.8 0.00003760691 0.384 AML other m 2020-12-13T23:31:54.89
IV.MPPT.EHN. ML:0.7 0.000031645085000000005 0.1408 AML other m 2020-12-13T23:31:55.12
IV.MOCL.EHE. ML:0.8 0.000029916579499999998 0.4352 AML other m 2020-12-13T23:31:56.93
IV.MOCL.EHN. ML:0.8 0.0000311184005 0.3328 AML other m 2020-12-13T23:31:57.45
IV.CSNT.HHE. ML:0.7 0.00001758459455 0.7168 AML other m 2020-12-13T23:31:58.62
IV.CSNT.HHN. ML:0.7 0.000019283605 1.3952 AML other m 2020-12-13T23:31:58.62
GU.POPM.HHN. ML:1.3 0.000065305245 0.6912 AML other m 2020-12-13T23:32:00.70
IV.PII.HHE. ML:1.0 0.000027983389999999996 0.8832 AML other m 2020-12-13T23:32:00.88
IV.PII.HHN. ML:1.0 0.00003349805 0.2304 AML other m 2020-12-13T23:32:00.92
IV.RONT.HHN. ML:1.2 0.000052311085 0.3712 AML other m 2020-12-13T23:32:02.07
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