Earthquake (explosion) with magnitude of ML 0.8 on date 19-09-2018 and time 12:48:25 (Italy) in region Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa)

A magnitude ML 0.8 (explosion) earthquake occured in region: Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa), on

  • 19-09-2018 10:48:25 (UTC)
  • 19-09-2018 12:48:25 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.97, 9.95 at 0 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Event type: explosion.

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
Ameglia SP 10 4365 4365
Lerici SP 12 10228 14593
Portovenere SP 13 3630 18223
Ortonovo SP 15 8277 26500
Castelnuovo Magra SP 15 8415 34915
Sarzana SP 16 21976 56891
Arcola SP 16 10607 67498
Carrara MS 17 63133 130631
Massa MS 17 69479 200110
La Spezia SP 18 93959 294069
Forte dei Marmi LU 18 7510 301579
Fosdinovo MS 19 4883 306462
Montignoso MS 19 10323 316785
Vezzano Ligure SP 19 7356 324141

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km SW of Carrara (63133 inhabitants)
17 Km W of Massa (69479 inhabitants)
18 Km SE of La Spezia (93959 inhabitants)
27 Km W of Viareggio (62467 inhabitants)
46 Km NW of Pisa (89158 inhabitants)
47 Km W of Lucca (89046 inhabitants)
55 Km NW of Livorno (159219 inhabitants)
78 Km W of Pistoia (90315 inhabitants)
93 Km W of Prato (191150 inhabitants)
94 Km SE of Genova (586655 inhabitants)
97 Km SW of Parma (192836 inhabitants)
97 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
Rev 100 ML 0.8 2018-09-19
10:48:25
43.97 9.95 0 2018-09-19
11:00:32
Sala Sismica INGV-Roma 61102251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-19 10:48:25 ± 0.58
Latitude 43.97 ± 0.04
Longitude 9.95 ± 0.02
Depth (km) 0 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type explosion
Origin ID 61102251

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 4220
Semi-minor axis of confidence ellipse (meter) 1450
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 19
Circular confidence region, given by single value of horizontal uncertainty (meter) 4220
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 220
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 8
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.46
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.5252
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 8
Magnitude information

ML:0.8

Field Value
Value 0.8
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 61102251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-09-19 11:00:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.MGR.HHZ. 2018-09-19T10:50:06.18 3.0 undecidable manual Pg 16.120001 0
IV.ACER.HHZ. 2018-09-19T10:50:03.51 3.0 negative manual Pg 16.32 0
CR.ZAG.BHZ. 2018-09-19T10:49:54.96 3.0 undecidable manual Pg 20.879999 0
ST.ZIAN.EHZ. 2018-09-19T10:49:41.66 3.0 undecidable manual Sg 7.93 0
IV.IOCA.HHZ. 2018-09-19T10:49:39.14 3.0 positive manual Pg 7.04 0
IV.VIVA.HHZ. 2018-09-19T10:49:22.14 3.0 positive manual Pg 8.13 0
IV.BRES.EHZ. 2018-09-19T10:49:20.70 3.0 undecidable manual Pg 11.69 0
MN.TRI.HHZ. 2018-09-19T10:49:11.61 3.0 positive manual Pn -2.09 0
IV.NDIM.HNZ. 2018-09-19T10:48:59.75 3.0 undecidable manual Sn -0.28 0
TV.SF04.EHZ. 2018-09-19T10:48:56.80 3.0 negative manual Pg 1.37 0
GU.SATI.HHZ. 2018-09-19T10:48:55.50 3.0 negative manual Pn -3.7 0
IV.CNCS.HNZ. 2018-09-19T10:48:50.73 3.0 undecidable manual Pg 1.08 0
GU.GRAM.HHE. 2018-09-19T10:48:36.14 0.1 undecidable manual P 9 0.5252 90 -0.59 93
IV.MSSA.HHZ. 2018-09-19T10:48:34.86 0.1 undecidable manual P 318 0.4605 90 -0.44 99
MN.VLC.HHZ. 2018-09-19T10:48:33.61 0.6 undecidable manual P 59 0.3669 90 0.4 51
GU.CARD.HHZ. 2018-09-19T10:48:33.55 0.6 undecidable manual P 82 0.3885 90 -0.15 53
GU.SARM.EHZ. 2018-09-19T10:48:33.83 0.6 undecidable manual P 57 0.3885 90 0.14 54
GU.MAIM.HHZ. 2018-09-19T10:48:33.61 0.6 undecidable manual P 98 0.3966 90 -0.27 52
GU.EQUI.HHZ. 2018-09-19T10:48:31.10 0.6 undecidable manual P 38 0.2437 90 0.64 48
IV.PLMA.HHZ. 2018-09-19T10:48:27.93 0.1 positive manual P 319 0.1016 91 0.62 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PLMA.HHN. ML:0.8 9.7E-5 0.3 AML other m 2018-09-19T10:48:29.81
IV.PLMA.HHE. ML:0.9 0.000126 0.88 AML other m 2018-09-19T10:48:30.75
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
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QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download