Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 26-02-2021 and time 00:46:07 (Italy) in region 3 km NE Fivizzano (MS)

A magnitude ML 1.6 earthquake occured in region: 3 km NE Fivizzano (MS), on

  • 25-02-2021 23:46:07 (UTC)
  • 26-02-2021 00:46:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.2560, 10.1430 at 10 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
Fivizzano MS 3 7925 7925
Comano MS 5 714 8639
Casola in Lunigiana MS 7 988 9627
Licciana Nardi MS 8 4949 14576
Minucciano LU 11 2102 16678
Sillano Giuncugnano LU 13 1085 17763
Bagnone MS 14 1887 19650
Aulla MS 15 11263 30913
Piazza al Serchio LU 15 2367 33280
Tresana MS 15 2044 35324
Villafranca in Lunigiana MS 16 4770 40094
Fosdinovo MS 17 4883 44977
Podenzana MS 17 2180 47157
Monchio delle Corti PR 18 933 48090
Filattiera MS 18 2309 50399
Camporgiano LU 19 2176 52575
San Romano in Garfagnana LU 19 1410 53985
Vagli Sotto LU 19 939 54924
Ventasso RE 19 4295 59219
Castelnuovo Magra SP 20 8415 67634

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km N of Carrara (63133 inhabitants)
24 Km N of Massa (69479 inhabitants)
30 Km NE of La Spezia (93959 inhabitants)
44 Km N of Viareggio (62467 inhabitants)
54 Km NW of Lucca (89046 inhabitants)
62 Km S of Parma (192836 inhabitants)
63 Km SW of Reggio nell'Emilia (171345 inhabitants)
64 Km NW of Pisa (89158 inhabitants)
72 Km NW of Pistoia (90315 inhabitants)
76 Km SW of Modena (184973 inhabitants)
79 Km N of Livorno (159219 inhabitants)
83 Km SW of Carpi (70699 inhabitants)
87 Km W of Prato (191150 inhabitants)
95 Km SE of Piacenza (102191 inhabitants)
98 Km E of Genova (586655 inhabitants)
98 Km S of Cremona (71901 inhabitants)
99 Km W of Bologna (386663 inhabitants)
100 Km NW of Scandicci (50609 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 1.6 2021-02-25
23:46:07		 44.2565 10.1427 10 2021-07-12
16:55:12		 Bollettino Sismico Italiano INGV 90448531
Reviewed
Rev100 		ML 1.6 2021-02-25
23:46:07		 44.2648 10.1383 10 2021-02-25
23:52:35		 Sala Sismica INGV-Roma 87485821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-25 23:46:07 ± 0.1
Latitude 44.2565 ± 0.0081
Longitude 10.1427 ± 0.0088
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90448531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 966
Semi-minor axis of confidence ellipse (meter) 536
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 208
Circular confidence region, given by single value of horizontal uncertainty (meter) 970.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.02068
Epicentral distance of station farthest from the epicenter (degree) 1.36517
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 90448531
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-24 12:10:47

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 87485821
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-25 23:52:35
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.CANO.HHZ. 2021-02-25T23:46:31.80 0.3 undecidable manual P 269 151.5372 50 -0.53 50
GU.POPM.HHZ. 2021-02-25T23:46:24.84 0.6 undecidable manual S 115 54.2013 50 0.28 43
IV.MSSA.HHZ. 2021-02-25T23:46:23.28 0.6 undecidable manual S 278 50.1165 50 -0.18 45
GU.MAIM.HHZ. 2021-02-25T23:46:22.10 0.6 undecidable manual S 144 47.1195 50 -0.58 41
IV.FNVD.HHZ. 2021-02-25T23:46:21.90 0.3 undecidable manual P 97 78.5658 50 0.82 52
IV.BOB.HNE. 2021-02-25T23:46:21.46 0.3 undecidable manual P 316 78.9654 50 0.31 62
GU.GORR.HHN. 2021-02-25T23:46:21.80 0.3 undecidable manual P 300 77.7666 50 0.84 52
IV.BDI.HHZ. 2021-02-25T23:46:20.94 0.6 undecidable manual S 121 41.9247 50 -0.35 44
IV.ZCCA.HHZ. 2021-02-25T23:46:20.42 0.3 undecidable manual P 81 66.9774 50 1.12 47
GU.GSCL.HHZ. 2021-02-25T23:46:19.85 0.3 undecidable manual S 73 36.8298 50 -0.08 70
IV.PII.HHZ. 2021-02-25T23:46:19.65 0.1 undecidable manual P 153 66.6777 50 0.4 83
GU.CARD.HHZ. 2021-02-25T23:46:19.55 0.3 undecidable manual S 133 37.2294 50 -0.47 65
GU.POPM.HHZ. 2021-02-25T23:46:17.58 0.3 undecidable manual P 115 54.2013 50 0.25 66
IV.MSSA.HHZ. 2021-02-25T23:46:16.59 0.3 undecidable manual P 278 50.1165 50 -0.1 68
GU.GRAM.HHZ. 2021-02-25T23:46:16.29 0.6 undecidable manual S 347 26.6511 50 -0.92 37
GU.MAIM.HHZ. 2021-02-25T23:46:16.66 0.3 undecidable manual P 144 47.1195 50 0.42 64
MN.VLC.HHZ. 2021-02-25T23:46:15.63 0.6 undecidable manual S 119 22.1556 115 -0.28 46
GU.SARM.EHN. 2021-02-25T23:46:15.59 0.6 undecidable manual S 111 22.0668 115 -0.28 46
IV.BDI.HHZ. 2021-02-25T23:46:15.20 0.1 undecidable manual P 121 41.9247 50 -0.24 90
GU.CARD.HHZ. 2021-02-25T23:46:14.62 0.3 undecidable manual P 133 37.2294 50 -0.09 70
GU.GSCL.HHZ. 2021-02-25T23:46:14.65 0.1 undecidable manual P 73 36.8298 50 0 95
GU.GRAM.HHZ. 2021-02-25T23:46:12.69 0.1 undecidable manual P 347 26.6511 50 -0.4 89
GU.EQUI.HHZ. 2021-02-25T23:46:12.42 0.3 undecidable manual S 175 10.0788 135 0 75
MN.VLC.HHZ. 2021-02-25T23:46:12.24 0.3 undecidable manual P 119 22.1556 115 -0.09 72
GU.SARM.EHN. 2021-02-25T23:46:12.24 0.1 undecidable manual P 111 22.0668 115 -0.07 96
GU.FIVI.HNE. 2021-02-25T23:46:10.98 0.6 undecidable manual S 213 2.2977 168 -0.1 49
GU.EQUI.HHZ. 2021-02-25T23:46:10.35 0.1 undecidable manual P 175 10.0788 135 0.03 99
GU.FIVI.HNE. 2021-02-25T23:46:09.59 0.1 undecidable manual P 213 2.2977 168 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.EQUI.HHN. ML:1.1 0.00016450000000000001 0.58 AML other m 2021-02-25T23:46:12.59
GU.EQUI.HHE. ML:1.3 0.00026700000000000004 0.26 AML other m 2021-02-25T23:46:12.58
MN.VLC.HNN. ML:1.5 0.0002125 0.14 AML other m 2021-02-25T23:46:16.02
MN.VLC.HHN. ML:1.5 0.00022600000000000002 0.14 AML other m 2021-02-25T23:46:16.09
GU.GRAM.HHN. ML:2.0 0.0006080000000000001 0.18 AML other m 2021-02-25T23:46:17.18
MN.VLC.HNE. ML:1.2 0.00010250000000000001 1.24 AML other m 2021-02-25T23:46:17.31
MN.VLC.HHE. ML:1.1 0.00008395 0.46 AML other m 2021-02-25T23:46:17.31
GU.GRAM.HHE. ML:2.0 0.0005645 0.26 AML other m 2021-02-25T23:46:17.68
GU.CARD.HHE. ML:1.7 0.0001725 0.12 AML other m 2021-02-25T23:46:20.08
GU.CARD.HHN. ML:1.6 0.00014000000000000001 0.3 AML other m 2021-02-25T23:46:20.02
GU.GSCL.HHN. ML:1.6 0.000156 0.26 AML other m 2021-02-25T23:46:20.28
GU.GSCL.HHE. ML:1.8 0.00021450000000000004 0.24 AML other m 2021-02-25T23:46:20.48
IV.BDI.HHN. ML:1.3 0.00007014999999999998 0.14 AML other m 2021-02-25T23:46:23.26
IV.BDI.HHE. ML:1.2 0.00005295 0.76 AML other m 2021-02-25T23:46:23.84
IV.MSSA.HHN. ML:2.2 0.00044500000000000003 0.1 AML other m 2021-02-25T23:46:24.42
IV.MSSA.HHE. ML:2.3 0.000594 0.1 AML other m 2021-02-25T23:46:24.43
IV.PII.HHN. ML:1.8 0.0001275 0.9 AML other m 2021-02-25T23:46:30.03
IV.PII.HHE. ML:1.8 0.00009920000000000001 0.3 AML other m 2021-02-25T23:46:30.19
GU.CANO.HHN. ML:1.8 0.000033549999999999996 0.38 AML other m 2021-02-25T23:46:52.24
GU.CANO.HHE. ML:1.8 0.00003085 0.34 AML other m 2021-02-25T23:46:56.55
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