Earthquake with magnitude of ML 1.3 on date 30-05-2020 and time 22:32:00 (Italy) in region Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa)

A magnitude ML 1.3 earthquake occured in region: Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa), on

  • 30-05-2020 20:32:00 (UTC)
  • 30-05-2020 22:32:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.9, 10.18 at 5 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
Forte dei Marmi LU 7 7510 7510
Viareggio LU 7 62467 69977
Pietrasanta LU 8 24007 93984
Camaiore LU 11 32513 126497
Seravezza LU 11 13073 139570
Montignoso MS 13 10323 149893
Massarosa LU 14 22471 172364
Stazzema LU 15 3193 175557
Massa MS 15 69479 245036

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km NW of Viareggio (62467 inhabitants)
15 Km S of Massa (69479 inhabitants)
21 Km SE of Carrara (63133 inhabitants)
27 Km W of Lucca (89046 inhabitants)
28 Km NW of Pisa (89158 inhabitants)
36 Km SE of La Spezia (93959 inhabitants)
40 Km N of Livorno (159219 inhabitants)
60 Km W of Pistoia (90315 inhabitants)
74 Km W of Prato (191150 inhabitants)
82 Km W of Scandicci (50609 inhabitants)
88 Km W of Firenze (382808 inhabitants)
96 Km SW of Reggio nell'Emilia (171345 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100
ML 1.3 2020-05-30
20:32:00
43.9 10.17 5 2020-05-30
20:38:43
Sala Sismica INGV-Roma 79729171
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-30 20:32:00 ± 0.31
Latitude 43.90 ± 0.01
Longitude 10.17 ± 0.02
Depth (km) 5 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79729171

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1569
Semi-minor axis of confidence ellipse (meter) 376
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 48
Circular confidence region, given by single value of horizontal uncertainty (meter) 1570
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 228
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 15
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
Epicentral distance of station farthest from the epicenter (degree) 0.73115
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 79729171
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-30 20:38:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.VVLD.HHZ. 2020-05-30T20:33:46.08 3.0 undecidable manual Sg 7.1 0
IV.MNTT.EHZ. 2020-05-30T20:33:28.26 3.0 undecidable manual Sg 3.18 0
IV.CMPR.HHZ. 2020-05-30T20:33:18.34 3.0 undecidable manual Pn 0.32 0
IV.RIBO.EHZ.01 2020-05-30T20:32:37.99 3.0 undecidable manual S -7.89 0
ST.GAGG.HHZ. 2020-05-30T20:32:33.33 3.0 negative manual Pn 3.55 0
IV.MPPT.EHZ. 2020-05-30T20:32:23.45 0.3 undecidable manual S 85 0.661 50 -0.39 66
GU.GRAM.HHZ. 2020-05-30T20:32:21.15 0.6 undecidable manual S 353 0.5945 50 -0.71 40
GU.POPM.HHZ. 2020-05-30T20:32:17.31 0.6 undecidable manual S 71 0.4425 50 -0.05 49
IV.FNVD.HHE. 2020-05-30T20:32:16.10 0.1 undecidable manual P 68 0.7311 50 0.97 70
IV.MPPT.EHZ. 2020-05-30T20:32:14.00 0.1 undecidable manual P 85 0.661 50 0.07 94
GU.GRAM.HHZ. 2020-05-30T20:32:13.05 0.1 undecidable manual P 353 0.5945 50 0.26 92
MN.VLC.HHZ. 2020-05-30T20:32:11.95 0.6 undecidable manual S 30 0.2995 98 -0.1 50
IV.PII.HHZ. 2020-05-30T20:32:11.82 0.6 undecidable manual S 125 0.3103 98 -0.63 44
GU.CARD.HHZ. 2020-05-30T20:32:10.43 0.6 undecidable manual S 61 0.2536 100 0.11 51
GU.EQUI.HHE. 2020-05-30T20:32:10.57 0.6 undecidable manual S 357 0.2653 99 -0.17 50
GU.POPM.HHZ. 2020-05-30T20:32:09.97 0.6 negative manual P 71 0.4425 50 -0.22 48
MN.VLC.HHZ. 2020-05-30T20:32:07.26 0.1 positive manual P 30 0.2995 98 0.13 100
IV.PII.HHZ. 2020-05-30T20:32:07.29 1.0 undecidable manual P 125 0.3103 98 -0.07 25
GU.EQUI.HHE. 2020-05-30T20:32:06.12 0.1 undecidable manual P 357 0.2653 99 -0.25 98
GU.CARD.HHZ. 2020-05-30T20:32:06.33 0.1 positive manual P 61 0.2536 100 0.2 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CARD.HHE. ML:1.8 0.000329 0.16 AML other m 2020-05-30T20:32:11.11
GU.CARD.HHN. ML:1.7 0.0002565 1.46 AML other m 2020-05-30T20:32:11.20
IV.PII.HHE. ML:1.3 8.095E-5 0.24 AML other m 2020-05-30T20:32:12.21
MN.VLC.HHN. ML:1 4.855E-5 0.64 AML other m 2020-05-30T20:32:12.37
MN.VLC.HHE. ML:1.1 6.035E-5 0.22 AML other m 2020-05-30T20:32:12.49
IV.PII.HHN. ML:1.3 8.06E-5 0.26 AML other m 2020-05-30T20:32:12.74
GU.POPM.HHE. ML:1.5 7.915E-5 0.14 AML other m 2020-05-30T20:32:18.19
GU.POPM.HHN. ML:1.5 8.605E-5 0.24 AML other m 2020-05-30T20:32:21.93
GU.GRAM.HHN. ML:1.3 4.165E-5 0.48 AML other m 2020-05-30T20:32:22.28
IV.MPPT.EHN. ML:1 1.655E-5 0.44 AML other m 2020-05-30T20:32:24.62
GU.GRAM.HHE. ML:1.6 6.895E-5 1.3 AML other m 2020-05-30T20:32:24.75
IV.MPPT.EHE. ML:1 1.425E-5 0.18 AML other m 2020-05-30T20:32:26.70
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download