Earthquake with magnitude of ML 1.2 on date 15-04-2020 and time 00:10:57 (Italy) in region Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa)

A magnitude ML 1.2 earthquake occured in region: Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa), on

  • 14-04-2020 22:10:57 (UTC)
  • 15-04-2020 00:10:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.92, 10.19 at 6 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 5 7510 7510
Pietrasanta LU 5 24007 31517
Viareggio LU 8 62467 93984
Seravezza LU 9 13073 107057
Camaiore LU 9 32513 139570
Montignoso MS 11 10323 149893
Stazzema LU 12 3193 153086
Massa MS 13 69479 222565
Massarosa LU 14 22471 245036
Pescaglia LU 18 3526 248562
Carrara MS 19 63133 311695

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km NW of Viareggio (62467 inhabitants)
13 Km SE of Massa (69479 inhabitants)
19 Km SE of Carrara (63133 inhabitants)
26 Km W of Lucca (89046 inhabitants)
29 Km NW of Pisa (89158 inhabitants)
36 Km SE of La Spezia (93959 inhabitants)
42 Km N of Livorno (159219 inhabitants)
58 Km W of Pistoia (90315 inhabitants)
73 Km W of Prato (191150 inhabitants)
82 Km W of Scandicci (50609 inhabitants)
87 Km W of Firenze (382808 inhabitants)
93 Km SW of Reggio nell'Emilia (171345 inhabitants)
98 Km S of Parma (192836 inhabitants)
100 Km SW of Modena (184973 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 1.2 2020-04-14
22:10:57
43.92 10.19 6 2020-04-14
22:20:34
Sala Sismica INGV-Roma 78212691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-14 22:10:57 ± 0.25
Latitude 43.92 ± 0.01
Longitude 10.19 ± 0.01
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 78212691

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1249
Semi-minor axis of confidence ellipse (meter) 30
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 25
Circular confidence region, given by single value of horizontal uncertainty (meter) 1250
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 237
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.32
Epicentral distance of station closest to the epicenter (degree) 0.10612
Epicentral distance of station farthest from the epicenter (degree) 0.57467
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 78212691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-14 22:20:34
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
GU.GRAM.HHZ. 2020-04-14T22:11:18.25 1.0 undecidable manual S 351 0.5747 50 -0.05 24
GU.GSCL.HHN. 2020-04-14T22:11:16.69 0.1 undecidable manual S 34 0.5135 50 0.21 92
IV.BDI.HHZ. 2020-04-14T22:11:10.29 0.3 undecidable manual S 64 0.3229 99 0.04 74
GU.GRAM.HHZ. 2020-04-14T22:11:09.92 0.3 undecidable manual P 351 0.5747 50 0.35 66
MN.VLC.HHZ. 2020-04-14T22:11:08.53 0.3 undecidable manual S 31 0.2752 101 0.1 74
GU.GSCL.HHN. 2020-04-14T22:11:08.67 0.1 undecidable manual P 34 0.5135 50 0.15 93
GU.CARD.HHZ. 2020-04-14T22:11:07.30 0.1 undecidable manual S 64 0.2338 103 0.43 93
GU.POPM.HHZ. 2020-04-14T22:11:06.62 0.1 undecidable manual P 73 0.4254 50 -0.39 90
GU.MAIM.HHZ. 2020-04-14T22:11:06.24 0.3 undecidable manual S 92 0.2167 104 0 76
GU.EQUI.HHN. 2020-04-14T22:11:06.44 0.3 undecidable manual S 354 0.2446 102 -0.84 60
IV.BDI.HHZ. 2020-04-14T22:11:04.54 0.1 undecidable manual P 64 0.3229 99 -0.38 92
MN.VLC.HHZ. 2020-04-14T22:11:03.74 0.1 undecidable manual P 31 0.2752 101 -0.13 98
GU.EQUI.HHN. 2020-04-14T22:11:02.82 0.1 undecidable manual P 354 0.2446 102 -0.39 94
GU.CARD.HHZ. 2020-04-14T22:11:02.89 0.1 undecidable manual P 64 0.2338 103 -0.08 100
GU.MASSA.EHE. 2020-04-14T22:11:02.63 0.3 undecidable manual S 329 0.1061 117 0.43 71
GU.MAIM.HHZ. 2020-04-14T22:11:02.69 0.3 undecidable manual P 92 0.2167 104 0.08 75
GU.MASSA.EHE. 2020-04-14T22:11:00.62 0.1 undecidable manual P 329 0.1061 117 0.34 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
GU.CARD.HHN. ML:1.3 0.0001145 0.08 AML other m 2020-04-14T22:11:07.68
GU.CARD.HHE. ML:1.2 9.15E-5 1.42 AML other m 2020-04-14T22:11:08.02
IV.BDI.HHE. ML:0 4.89E-5 0.24 AML other m 2020-04-14T22:11:10.53
IV.BDI.HHN. ML:0 3.685E-5 0.42 AML other m 2020-04-14T22:11:15.49
GU.POPM.HHE. ML:1.4 8.11E-5 0.2 AML other m 2020-04-14T22:11:17.36
GU.POPM.HHN. ML:1.5 8.385E-5 0.12 AML other m 2020-04-14T22:11:17.74
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