Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 04-07-2022 and time 08:13:40 (Italy) in region Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa)

A magnitude ML 2.1 earthquake occured in region: Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa), on

  • 04-07-2022 06:13:40 (UTC)
  • 04-07-2022 08:13:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.8620, 10.2110 at 4 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
Viareggio LU 3 62467 62467
Massarosa LU 11 22471 84938
Pietrasanta LU 11 24007 108945
Camaiore LU 11 32513 141458
Forte dei Marmi LU 12 7510 148968
Seravezza LU 15 13073 162041
Stazzema LU 17 3193 165234
Vecchiano PI 17 12189 177423
Montignoso MS 18 10323 187746
Pescaglia LU 20 3526 191272

Municipalities with at least 50000 inhabitants

An earthquake occurred to
3 Km W of Viareggio (62467 inhabitants)
20 Km S of Massa (69479 inhabitants)
22 Km NW of Pisa (89158 inhabitants)
23 Km W of Lucca (89046 inhabitants)
26 Km SE of Carrara (63133 inhabitants)
35 Km N of Livorno (159219 inhabitants)
41 Km SE of La Spezia (93959 inhabitants)
57 Km W of Pistoia (90315 inhabitants)
71 Km W of Prato (191150 inhabitants)
79 Km W of Scandicci (50609 inhabitants)
85 Km W of Firenze (382808 inhabitants)
99 Km SW of Reggio nell'Emilia (171345 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 2.1 2022-07-04
06:13:40		 43.8623 10.2112 4 2023-01-31
19:03:53		 Bollettino Sismico Italiano INGV 111234641
Reviewed
Rev100 		ML 2.2 2022-07-04
06:13:40		 43.8402 10.2158 10 2022-07-04
06:24:15		 Sala Sismica INGV-Roma 106782591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2022-07-04 06:13:40 ± 0.15
Latitude 43.8623 ± 0.0063
Longitude 10.2112 ± 0.0075
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 111234641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 639
Semi-minor axis of confidence ellipse (meter) 447
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 204
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.20864
Epicentral distance of station farthest from the epicenter (degree) 1.58191
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 40
Type of magnitude ML
Reference to an origin 106782591
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2022-07-04 06:24:15

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 111234641
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-12-30 16:52:05
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
RD.PGF.BHZ. 2022-07-04T06:14:08.54 0.6 undecidable manual P 214 175.5909 50 -1.9 15
GU.GRAM.HHZ. 2022-07-04T06:14:03.40 0.6 undecidable manual S 351 70.6737 50 -0.58 41
GU.RNCA.HHZ. 2022-07-04T06:14:02.29 0.3 undecidable manual P 304 120.8901 50 0.28 60
GU.GSCL.HHZ. 2022-07-04T06:14:01.30 0.3 undecidable manual S 29 61.8936 50 -0.36 66
GU.GORR.HHZ. 2022-07-04T06:14:00.38 0.3 undecidable manual P 319 110.3118 50 0.01 64
IV.RUFI.EHZ. 2022-07-04T06:14:00.24 0.3 undecidable manual P 91 103.9182 50 0.86 51
IV.SEI.HHZ. 2022-07-04T06:13:57.85 0.3 undecidable manual P 77 94.0392 50 -0.02 66
GU.POPM.HHZ. 2022-07-04T06:13:57.30 0.3 undecidable manual S 65 48.0186 94 -0.4 67
IV.ZCCA.HHZ. 2022-07-04T06:13:57.49 0.3 undecidable manual P 48 81.5517 50 1.55 37
IV.FNVD.HHZ. 2022-07-04T06:13:55.74 0.3 undecidable manual P 65 80.2641 50 0 68
IV.MOCL.EHZ. 2022-07-04T06:13:55.39 0.6 undecidable manual P 78 79.0653 50 -0.17 44
IV.MSSA.HHZ. 2022-07-04T06:13:54.64 0.3 undecidable manual P 313 74.7696 50 -0.26 66
GU.GRAM.HHZ. 2022-07-04T06:13:54.51 0.3 undecidable manual P 351 70.6737 50 0.25 66
GU.SARM.EHN. 2022-07-04T06:13:54.17 0.6 undecidable manual S 23 38.7279 95 -0.31 46
IV.BDI.HHZ. 2022-07-04T06:13:53.70 0.6 undecidable manual S 54 37.9287 95 -0.49 45
MN.VLC.HHZ. 2022-07-04T06:13:53.30 0.3 undecidable manual S 23 35.8419 96 -0.16 72
GU.GSCL.HHZ. 2022-07-04T06:13:53.07 0.3 undecidable manual P 29 61.8936 50 0.15 69
GU.EQUI.HHZ. 2022-07-04T06:13:52.40 0.3 undecidable manual S 352 34.0437 96 -0.44 68
IV.PLMA.HHZ. 2022-07-04T06:13:52.60 1.0 undecidable manual S 306 35.3424 96 -0.7 21
IV.CRMI.HHZ. 2022-07-04T06:13:52.64 0.1 undecidable manual P 97 61.8936 50 -0.28 89
GU.CARD.HHZ. 2022-07-04T06:13:51.00 0.3 undecidable manual S 50 28.2495 97 0.14 73
GU.POPM.HHZ. 2022-07-04T06:13:50.32 0.1 undecidable manual P 65 48.0186 94 -0.31 91
IV.PII.HHZ. 2022-07-04T06:13:50.70 0.3 undecidable manual S 122 29.5482 97 -0.61 65
GU.FIVI.HNE. 2022-07-04T06:13:49.59 0.3 undecidable manual P 351 42.3243 95 0.09 72
GU.MAIM.HHZ. 2022-07-04T06:13:49.06 0.6 undecidable manual S 76 23.1546 98 -0.03 50
IV.PLMA.HHZ. 2022-07-04T06:13:48.05 0.1 undecidable manual P 306 35.3424 96 -0.04 98
GU.EQUI.HHZ. 2022-07-04T06:13:48.05 0.1 positive manual P 352 34.0437 96 0.22 95
GU.SARM.EHN. 2022-07-04T06:13:48.97 0.1 positive manual P 23 38.7279 95 0.19 95
MN.VLC.HHZ. 2022-07-04T06:13:48.51 0.1 positive manual P 23 35.8419 96 0.32 93
IV.BDI.HHZ. 2022-07-04T06:13:48.65 0.1 positive manual P 54 37.9287 95 0.05 98
GU.CARD.HHZ. 2022-07-04T06:13:47.03 0.1 positive manual P 50 28.2495 97 0.35 93
IV.PII.HHZ. 2022-07-04T06:13:46.93 0.1 undecidable manual P 122 29.5482 97 -0.01 100
GU.MAIM.HHZ. 2022-07-04T06:13:46.18 0.1 negative manual P 76 23.1546 98 0.52 91
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.MAIM.HHN. ML:2.2 0.0010395 1.56 AML other m 2022-07-04T06:13:49.92
GU.MAIM.HHE. ML:2.0 0.0006684999999999999 1.72 AML other m 2022-07-04T06:13:50.87
IV.PII.HHE. ML:2.0 0.000549 1.56 AML other m 2022-07-04T06:13:51.19
GU.CARD.HHE. ML:2.4 0.001355 0.3 AML other m 2022-07-04T06:13:51.59
GU.CARD.HHN. ML:2.3 0.0010500000000000002 0.42 AML other m 2022-07-04T06:13:51.64
IV.PII.HHN. ML:2.0 0.000587 0.26 AML other m 2022-07-04T06:13:51.57
GU.EQUI.HHE. ML:1.9 0.0003145 0.3 AML other m 2022-07-04T06:13:53.58
MN.VLC.HHE. ML:2.0 0.000379 1.36 AML other m 2022-07-04T06:13:53.87
MN.VLC.HNE. ML:2.0 0.0003765 1.36 AML other m 2022-07-04T06:13:53.87
MN.VLC.HHN. ML:1.8 0.00028649999999999997 0.14 AML other m 2022-07-04T06:13:54.07
GU.EQUI.HHN. ML:1.8 0.000273 0.38 AML other m 2022-07-04T06:13:54.38
IV.PLMA.HHE. ML:1.9 0.0003195 0.18 AML other m 2022-07-04T06:13:54.38
MN.VLC.HNN. ML:1.8 0.00029200000000000005 1.06 AML other m 2022-07-04T06:13:54.14
IV.PLMA.HHN. ML:2.0 0.000375 0.2 AML other m 2022-07-04T06:13:54.65
IV.BDI.HHE. ML:2.2 0.000614 1.08 AML other m 2022-07-04T06:13:58.22
IV.BDI.HNE. ML:2.1 0.0005455000000000001 0.32 AML other m 2022-07-04T06:13:58.77
IV.BDI.HHN. ML:2.2 0.000561 0.8 AML other m 2022-07-04T06:13:58.81
IV.BDI.HNN. ML:2.1 0.000507 0.78 AML other m 2022-07-04T06:13:58.42
GU.GSCL.HHE. ML:2.5 0.0006730000000000001 0.28 AML other m 2022-07-04T06:14:01.58
GU.GSCL.HHN. ML:2.4 0.0005775 0.28 AML other m 2022-07-04T06:14:01.60
GU.POPM.HHN. ML:2.4 0.0006615 1.4 AML other m 2022-07-04T06:14:02.74
GU.POPM.HHE. ML:2.5 0.0009725000000000001 0.22 AML other m 2022-07-04T06:14:02.83
IV.MSSA.HHN. ML:2.6 0.0006799999999999999 0.1 AML other m 2022-07-04T06:14:04.39
IV.CRMI.HHE. ML:1.6 0.00007835000000000001 0.28 AML other m 2022-07-04T06:14:04.53
IV.CRMI.HHN. ML:1.8 0.0001315 0.2 AML other m 2022-07-04T06:14:04.55
IV.MSSA.HHE. ML:2.7 0.000867 1.1 AML other m 2022-07-04T06:14:05.08
IV.MOCL.EHE. ML:2.5 0.000438 0.28 AML other m 2022-07-04T06:14:08.29
IV.MOCL.EHN. ML:2.2 0.0002415 0.28 AML other m 2022-07-04T06:14:08.61
IV.FNVD.HHE. ML:2.1 0.0001595 0.72 AML other m 2022-07-04T06:14:11.44
IV.ZCCA.HHE. ML:2.1 0.00017 0.38 AML other m 2022-07-04T06:14:12.27
IV.ZCCA.HHN. ML:2.1 0.00017099999999999998 0.42 AML other m 2022-07-04T06:14:12.11
IV.SEI.HHN. ML:2.6 0.000438 0.46 AML other m 2022-07-04T06:14:13.57
IV.SEI.HHE. ML:2.5 0.00033150000000000003 0.44 AML other m 2022-07-04T06:14:14.27
IV.FNVD.HHN. ML:2.1 0.000174 0.58 AML other m 2022-07-04T06:14:14.98
GU.GORR.HHN. ML:2.3 0.0001625 0.46 AML other m 2022-07-04T06:14:17.04
GU.GORR.HHE. ML:2.4 0.000212 1.64 AML other m 2022-07-04T06:14:17.90
GU.RNCA.HHN. ML:2.1 0.00009085 1.08 AML other m 2022-07-04T06:14:20.38
GU.RNCA.HHE. ML:2.1 0.00009195 0.18 AML other m 2022-07-04T06:14:21.74
IV.CRE.HHE. ML:1.8 0.00003585 1.22 AML other m 2022-07-04T06:14:24.17
IV.CRE.HHN. ML:1.9 0.0000426 0.54 AML other m 2022-07-04T06:14:29.13
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