Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 17-02-2021 and time 05:54:28 (Italy) in region 6 km W Cantagallo (PO)

A magnitude ML 1.7 earthquake occured in region: 6 km W Cantagallo (PO), on

  • 17-02-2021 04:54:28 (UTC)
  • 17-02-2021 05:54:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 44.0260, 11.0340 at 54 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
Cantagallo PO 6 3105 3105
Sambuca Pistoiese PT 9 1626 4731
Vaiano PO 10 9895 14626
Montale PT 10 10737 25363
Vernio PO 10 6060 31423
Montemurlo PO 11 18456 49879
Agliana PT 14 17525 67404
Pistoia PT 14 90315 157719
Alto Reno Terme BO 15 6960 164679
Castel di Casio BO 15 3448 168127
Castiglione dei Pepoli BO 16 5648 173775
Camugnano BO 17 1885 175660
Barberino di Mugello FI 17 10836 186496
Prato PO 17 191150 377646
Lizzano in Belvedere BO 19 2212 379858
San Marcello Pistoiese PT 20 6416 386274

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NE of Pistoia (90315 inhabitants)
17 Km NW of Prato (191150 inhabitants)
32 Km NW of Scandicci (50609 inhabitants)
34 Km NW of Firenze (382808 inhabitants)
47 Km E of Lucca (89046 inhabitants)
58 Km SW of Bologna (386663 inhabitants)
61 Km NE of Pisa (89158 inhabitants)
65 Km E of Viareggio (62467 inhabitants)
65 Km SW of Imola (69797 inhabitants)
70 Km S of Modena (184973 inhabitants)
71 Km E of Massa (69479 inhabitants)
74 Km W of Faenza (58541 inhabitants)
75 Km E of Carrara (63133 inhabitants)
78 Km NE of Livorno (159219 inhabitants)
81 Km SE of Reggio nell'Emilia (171345 inhabitants)
82 Km NW of Siena (53903 inhabitants)
83 Km W of Forlì (117913 inhabitants)
85 Km S of Carpi (70699 inhabitants)
92 Km NW of Arezzo (99543 inhabitants)
97 Km E of La Spezia (93959 inhabitants)
97 Km W of Cesena (96758 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 1.7 2021-02-17
04:54:28		 44.0258 11.034 54 2021-07-12
16:54:59		 Bollettino Sismico Italiano INGV 87298091
Reviewed
Rev100 		ML 1.8 2021-02-17
04:54:27		 43.996 11.0273 59 2021-02-17
05:03:49		 Sala Sismica INGV-Roma 87229631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-17 04:54:28 ± 0.1
Latitude 44.0258 ± 0.0054
Longitude 11.0340 ± 0.0038
Depth (km) 54 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87298091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 600
Semi-minor axis of confidence ellipse (meter) 28
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 355
Circular confidence region, given by single value of horizontal uncertainty (meter) 600.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.59715
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 87229631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-17 05:03:49

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 87298091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-19 11:11:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFE.HHZ. 2021-02-17T04:56:19.55 3.0 undecidable manual Sn -4.56 0
IV.SRES.HHZ. 2021-02-17T04:55:29.75 3.0 undecidable manual Sn -0.4 0
IV.SENA.HHZ. 2021-02-17T04:55:25.38 3.0 negative manual Pn 2.47 0
IV.BLLA.EHZ. 2021-02-17T04:55:06.39 3.0 undecidable manual Sg 1.23 0
SI.LUSI.HHZ. 2021-02-17T04:54:56.07 3.0 negative manual Pn 0.41 0
IV.BRIS.HHZ. 2021-02-17T04:54:50.34 0.3 undecidable manual S 69 62.3931 119 0.22 68
IV.CSNT.HHZ. 2021-02-17T04:54:50.96 0.3 undecidable manual S 161 64.6908 117 0.41 65
IV.SFI.HNZ. 2021-02-17T04:54:50.52 0.6 undecidable manual S 101 66.2781 117 -0.35 45
IV.PII.HHZ. 2021-02-17T04:54:48.66 0.3 undecidable manual S 231 52.8027 125 0.29 69
GU.SARM.EHZ. 2021-02-17T04:54:48.59 0.3 undecidable manual S 289 53.4021 124 0.12 72
IV.LMD.HHZ. 2021-02-17T04:54:48.74 0.3 undecidable manual S 84 54.0015 124 0.17 70
IV.MTRZ.HHZ. 2021-02-17T04:54:47.39 0.3 undecidable manual S 44 44.5221 131 0.44 67
GU.MAIM.HHZ. 2021-02-17T04:54:46.92 0.3 undecidable manual S 254 45.1215 130 -0.12 71
GU.CARD.HHZ. 2021-02-17T04:54:46.58 0.6 undecidable manual S 270 44.0226 131 -0.29 46
IV.BDI.HHZ. 2021-02-17T04:54:45.37 0.3 undecidable manual S 277 35.2425 139 -0.16 72
IV.ZCCA.HNZ. 2021-02-17T04:54:45.87 0.6 undecidable manual S 353 36.3414 138 0.18 49
IV.RUFI.EHZ. 2021-02-17T04:54:45.87 0.6 undecidable manual S 119 43.3233 132 -0.89 38
IV.SEI.HHE. 2021-02-17T04:54:44.29 0.6 undecidable manual S 83 26.0517 148 -0.07 50
GU.POPM.HHZ. 2021-02-17T04:54:44.02 0.3 undecidable manual S 276 22.1556 152 0.08 77
IV.MPPT.EHZ. 2021-02-17T04:54:43.03 0.3 undecidable manual S 149 8.7801 169 0.05 79
IV.FNVD.HHZ. 2021-02-17T04:54:43.71 0.6 undecidable manual S 24 17.2716 158 0.21 50
IV.MOCL.EHE. 2021-02-17T04:54:42.86 0.6 undecidable manual S 101 11.9769 165 -0.27 49
IV.ASQU.HHZ. 2021-02-17T04:54:41.14 0.3 undecidable manual P 113 65.49 117 -0.16 70
IV.CSNT.HHZ. 2021-02-17T04:54:41.44 0.3 undecidable manual P 161 64.6908 117 0.23 68
IV.SFI.HNZ. 2021-02-17T04:54:41.20 0.3 undecidable manual P 101 66.2781 117 -0.19 69
MN.VLC.HNZ. 2021-02-17T04:54:40.02 0.1 undecidable manual P 286 53.7018 124 -0.01 97
IV.LMD.HHZ. 2021-02-17T04:54:40.14 0.1 undecidable manual P 84 54.0015 124 0.08 95
IV.PII.HHZ. 2021-02-17T04:54:40.25 0.6 undecidable manual P 231 52.8027 125 0.3 46
IV.BRIS.HHZ. 2021-02-17T04:54:40.86 0.1 undecidable manual P 69 62.3931 119 -0.1 95
GU.GSCL.HHZ. 2021-02-17T04:54:39.77 0.1 undecidable manual P 316 50.5161 126 0.05 96
IV.RINC.HHZ. 2021-02-17T04:54:39.46 0.6 undecidable manual P 108 48.3183 128 -0.03 49
IV.MTRZ.HHZ. 2021-02-17T04:54:39.17 0.3 undecidable manual P 44 44.5221 131 0.04 73
GU.MAIM.HHZ. 2021-02-17T04:54:39.20 0.3 undecidable manual P 254 45.1215 130 0.02 74
GU.SARM.EHZ. 2021-02-17T04:54:39.89 0.3 undecidable manual P 289 53.4021 124 -0.11 71
GU.CARD.HHZ. 2021-02-17T04:54:38.84 0.1 undecidable manual P 270 44.0226 131 -0.24 94
IV.RUFI.EHZ. 2021-02-17T04:54:38.86 0.3 undecidable manual P 119 43.3233 132 -0.16 72
IV.BDI.HHZ. 2021-02-17T04:54:38.20 0.1 undecidable manual P 277 35.2425 139 -0.11 98
IV.ZCCA.HNZ. 2021-02-17T04:54:38.40 0.1 undecidable manual P 353 36.3414 138 0 100
IV.FNVD.HHZ. 2021-02-17T04:54:37.07 0.3 undecidable manual P 24 17.2716 158 -0.06 77
GU.POPM.HHZ. 2021-02-17T04:54:37.32 0.3 undecidable manual P 276 22.1556 152 -0.07 76
IV.SEI.HHE. 2021-02-17T04:54:37.63 0.3 undecidable manual P 83 26.0517 148 0 76
IV.MOCL.EHE. 2021-02-17T04:54:36.94 0.3 undecidable manual P 101 11.9769 165 0.02 78
IV.MPPT.EHZ. 2021-02-17T04:54:36.85 0.3 undecidable manual P 149 8.7801 169 0.02 79
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.BDI.HHN. ML:1.4 0.00004366655999999999 0.4384 AML other m 2021-02-17T04:54:45.63
IV.BDI.HHE. ML:1.5 0.000054403445000000005 0.2784 AML other m 2021-02-17T04:54:46.03
GU.CARD.HHN. ML:2.0 0.000186 1.66 AML other m 2021-02-17T04:54:46.05
GU.CARD.HHE. ML:1.9 0.00014250000000000002 0.1 AML other m 2021-02-17T04:54:46.87
IV.PII.HHN. ML:0.0 0.00013665 0.34 AML other m 2021-02-17T04:54:49.35
IV.PII.HHE. ML:0.0 0.0001585 0.32 AML other m 2021-02-17T04:54:49.50
IV.LMD.HHE. ML:0.0 0.000036150000000000005 0.46 AML other m 2021-02-17T04:54:49.73
IV.LMD.HHN. ML:0.0 0.0000357 0.3 AML other m 2021-02-17T04:54:51.15
IV.BRIS.HHE. ML:1.8 0.00008308973 0.3008 AML other m 2021-02-17T04:54:51.16
IV.BRIS.HHN. ML:1.8 0.00008655918500000002 1.2576 AML other m 2021-02-17T04:54:50.87
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