Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 20-11-2021 and time 06:24:27 (Italy) in region Costa Toscana livornese (Livorno)

A magnitude ML 2.0 earthquake occured in region: Costa Toscana livornese (Livorno), on

  • 20-11-2021 05:24:27 (UTC)
  • 20-11-2021 06:24:27 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4520, 10.2160 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.

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
Livorno LI 14 159219 159219

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km SW of Livorno (159219 inhabitants)
33 Km SW of Pisa (89158 inhabitants)
46 Km S of Viareggio (62467 inhabitants)
50 Km SW of Lucca (89046 inhabitants)
65 Km S of Massa (69479 inhabitants)
70 Km S of Carrara (63133 inhabitants)
78 Km SW of Pistoia (90315 inhabitants)
79 Km SE of La Spezia (93959 inhabitants)
85 Km W of Scandicci (50609 inhabitants)
86 Km SW of Prato (191150 inhabitants)
91 Km W of Firenze (382808 inhabitants)
92 Km W of Siena (53903 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 2021-11-20
05:24:27		 43.4517 10.2158 11 2022-03-30
13:04:20		 Bollettino Sismico Italiano INGV 98248691
Reviewed
Rev100 		ML 2.0 2021-11-20
05:24:26		 43.4572 10.2778 6 2021-11-20
05:35:19		 Sala Sismica INGV-Roma 97615681
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-20 05:24:27 ± 0.08
Latitude 43.4517 ± 0.0018
Longitude 10.2158 ± 0.0050
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 98248691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 379
Semi-minor axis of confidence ellipse (meter) 93
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 64
Circular confidence region, given by single value of horizontal uncertainty (meter) 380.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.26714
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 22
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 98248691
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-24 13:26:08

ML:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations 14
Type of magnitude ML
Reference to an origin 97615681
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-20 05:35:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IVGP.HHZ. 2021-11-20T05:26:16.52 3.0 undecidable manual Pg 15.13 0
IV.ESCV.HHZ. 2021-11-20T05:26:05.59 3.0 positive manual Pn -2.54 0
MN.TRI.HHZ. 2021-11-20T05:26:00.67 3.0 undecidable manual Sn -2.33 0
IV.MRVN.HHZ. 2021-11-20T05:25:59.88 3.0 undecidable manual Pg 14.64 0
IV.FAGN.HHZ. 2021-11-20T05:25:54.11 3.0 undecidable manual Sg 4.25 0
IX.CMP3.EHZ.02 2021-11-20T05:25:43.74 3.0 negative manual Pn 4.76 0
IV.VIVA.HHZ. 2021-11-20T05:25:43.79 3.0 undecidable manual Sn -1.41 0
IV.CMPR.HHZ. 2021-11-20T05:25:42.29 3.0 undecidable manual Pn -1.46 0
OT.OT17.EHZ. 2021-11-20T05:25:39.52 3.0 negative manual Pg 5.96 0
IV.FOSV.EHZ. 2021-11-20T05:25:31.07 3.0 undecidable manual Sg 3.46 0
IV.ICAI.EHZ. 2021-11-20T05:25:29.33 3.0 undecidable manual Pn -0.36 0
IV.PAOL.HHZ. 2021-11-20T05:25:29.71 3.0 undecidable manual Pn -1.83 0
IV.VVLD.HHZ. 2021-11-20T05:25:17.33 3.0 positive manual Pn 0.5 0
IV.SRES.HHZ. 2021-11-20T05:25:07.53 3.0 negative manual Pg 2.87 0
IV.LAV9.HHZ. 2021-11-20T05:25:06.47 3.0 negative manual Pn -4.76 0
IV.TREG.EHZ. 2021-11-20T05:25:01.18 3.0 positive manual Pn -2.57 0
IV.CASP.HHZ. 2021-11-20T05:24:53.74 0.6 undecidable manual S 144 90.243 90 0.09 45
GU.SARM.EHN. 2021-11-20T05:24:51.90 0.6 undecidable manual S 10 82.5507 90 0.29 45
GU.POPM.HHZ. 2021-11-20T05:24:51.02 0.6 undecidable manual S 33 78.7656 90 0.42 44
GU.EQUI.HHZ. 2021-11-20T05:24:50.83 0.6 undecidable manual S 356 79.365 90 0.07 46
RD.PGF.BHZ. 2021-11-20T05:24:49.36 0.3 undecidable manual P 225 140.6481 90 -0.85 46
IV.BDI.HHZ. 2021-11-20T05:24:49.07 0.6 undecidable manual S 24 74.2701 90 -0.33 43
IV.CELB.HHZ. 2021-11-20T05:24:49.90 0.6 undecidable manual S 180 78.2661 90 -0.55 40
IV.PLMA.HHZ. 2021-11-20T05:24:48.92 0.6 undecidable manual S 337 72.372 90 0.02 46
IV.CRMI.HNN. 2021-11-20T05:24:48.72 0.6 undecidable manual S 58 72.1722 90 -0.12 45
GU.CARD.HHZ. 2021-11-20T05:24:47.42 0.6 undecidable manual S 18 67.1772 90 -0.08 46
GU.GRAM.HHZ. 2021-11-20T05:24:47.24 0.3 undecidable manual P 354 115.7952 90 0.86 53
IV.TRIF.CHZ. 2021-11-20T05:24:46.95 0.6 undecidable manual S 124 66.8775 90 -0.47 43
IV.RUFI.EHZ. 2021-11-20T05:24:46.93 0.3 undecidable manual P 67 112.2987 90 1.09 48
IV.MSSA.HHZ. 2021-11-20T05:24:45.98 0.3 undecidable manual P 330 111 90 0.35 62
GU.MAIM.HHZ. 2021-11-20T05:24:43.89 0.6 undecidable manual S 23 55.7997 90 -0.56 41
IV.CASP.HHZ. 2021-11-20T05:24:42.72 0.1 undecidable manual P 144 90.243 90 0.29 87
IV.RIBO.EHE.01 2021-11-20T05:24:42.43 0.3 undecidable manual P 129 87.3459 90 0.45 64
IV.OSSC.HHE. 2021-11-20T05:24:42.20 0.3 undecidable manual P 84 83.25 90 0.84 56
GU.SARM.EHN. 2021-11-20T05:24:41.39 0.3 undecidable manual P 10 82.5507 90 0.14 69
IV.FROS.CHZ. 2021-11-20T05:24:41.12 0.3 undecidable manual P 109 80.4639 90 0.19 68
IV.BDI.HHZ. 2021-11-20T05:24:40.33 0.3 undecidable manual P 24 74.2701 90 0.35 67
GU.POPM.HHZ. 2021-11-20T05:24:40.91 0.1 undecidable manual P 33 78.7656 90 0.24 91
IV.CELB.HHZ. 2021-11-20T05:24:40.54 0.3 undecidable manual P 180 78.2661 90 -0.05 68
IV.CRMI.HNN. 2021-11-20T05:24:40.12 0.1 undecidable manual P 58 72.1722 90 0.46 87
GU.EQUI.HHZ. 2021-11-20T05:24:40.94 0.3 undecidable manual P 356 79.365 90 0.18 69
IV.MAGO.CHZ. 2021-11-20T05:24:39.67 0.6 undecidable manual S 119 40.8258 90 -0.78 39
IV.PLMA.HHZ. 2021-11-20T05:24:39.49 0.1 undecidable manual P 337 72.372 90 -0.2 88
IV.TRIF.CHZ. 2021-11-20T05:24:38.88 0.3 undecidable manual P 124 66.8775 90 0.05 71
IV.PII.HHZ. 2021-11-20T05:24:38.98 0.3 undecidable manual S 40 38.9277 90 -0.98 53
GU.CARD.HHZ. 2021-11-20T05:24:38.72 0.1 undecidable manual P 18 67.1772 90 -0.16 90
VR.VRG02.HH2. 2021-11-20T05:24:38.26 0.6 undecidable manual S 47 33.2445 90 -0.18 48
VR.VRG01.HH2. 2021-11-20T05:24:37.58 0.6 undecidable manual S 49 30.6471 90 -0.15 48
GU.MAIM.HHZ. 2021-11-20T05:24:37.06 0.1 undecidable manual P 23 55.7997 90 -0.06 94
IV.MAGO.CHZ. 2021-11-20T05:24:34.67 0.3 undecidable manual P 119 40.8258 90 -0.14 72
IV.PII.HHZ. 2021-11-20T05:24:34.06 0.1 positive manual P 40 38.9277 90 -0.47 88
VR.VRG01.HH2. 2021-11-20T05:24:33.11 0.3 undecidable manual P 49 30.6471 90 -0.13 73
VR.VRG02.HH2. 2021-11-20T05:24:33.67 0.1 undecidable manual P 47 33.2445 90 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PII.HHE. ML:2.2 0.00050756185 0.2784 AML other m 2021-11-20T05:24:39.99
IV.PII.HHN. ML:2.2 0.0005115 0.86 AML other m 2021-11-20T05:24:40.91
IV.MAGO.CHN. ML:2.0 0.0002945 1.28 AML other m 2021-11-20T05:24:41.14
IV.MAGO.CHE. ML:2.2 0.0004695 0.28 AML other m 2021-11-20T05:24:43.15
IV.TRIF.CHN. ML:1.8 0.0001232 0.62 AML other m 2021-11-20T05:24:48.70
GU.CARD.HHN. ML:2.2 0.00030649999999999997 0.22 AML other m 2021-11-20T05:24:49.16
GU.CARD.HHE. ML:2.2 0.00026000000000000003 0.44 AML other m 2021-11-20T05:24:49.46
IV.TRIF.CHE. ML:1.8 0.0001125 0.22 AML other m 2021-11-20T05:24:49.54
IV.PLMA.HHN. ML:1.8 0.00010252993 1.2992 AML other m 2021-11-20T05:24:49.96
IV.PLMA.HHE. ML:1.7 0.00008624038500000001 1.7824 AML other m 2021-11-20T05:24:49.43
IV.BDI.HHN. ML:2.1 0.0001975 0.44 AML other m 2021-11-20T05:24:51.52
IV.BDI.HHE. ML:2.0 0.000153 0.88 AML other m 2021-11-20T05:24:51.62
GU.POPM.HHN. ML:2.1 0.000168 0.98 AML other m 2021-11-20T05:24:52.47
GU.POPM.HHE. ML:2.1 0.00018099999999999998 0.2 AML other m 2021-11-20T05:24:53.20
IV.CASP.HHE. ML:1.8 0.0000774 1.12 AML other m 2021-11-20T05:24:55.12
IV.CASP.HHN. ML:1.9 0.00009245000000000001 0.66 AML other m 2021-11-20T05:24:55.84
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