Earthquake with magnitude of M 0.0 on date 12-04-2011 and time 14:44:27 (Italy) in region Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa)

A magnitude M 0.0 earthquake occured in region: Costa Toscana settentrionale (Massa Carrara, Lucca, Pisa), on

  • 12-04-2011 12:44:27 (UTC)
  • 12-04-2011 14:44:27 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.8600, 9.8400 at 10 km depth.

The earthquake was located by: Fonte esterna non nota.

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

No Italian municipalities within 20 km distance.

Municipalities with at least 50000 inhabitants

An earthquake occurred to
28 Km S of La Spezia (93959 inhabitants)
31 Km SW of Massa (69479 inhabitants)
32 Km SW of Carrara (63133 inhabitants)
33 Km W of Viareggio (62467 inhabitants)
48 Km W of Pisa (89158 inhabitants)
51 Km NW of Livorno (159219 inhabitants)
53 Km W of Lucca (89046 inhabitants)
87 Km W of Pistoia (90315 inhabitants)
95 Km SE of Genova (586655 inhabitants)
Recent and historical seismicity
Seismic hazard
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
M 0.0 2011-04-12
43.86 9.84 10 2014-10-15
Fonte esterna non nota 1195729
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2011-04-12 12:44:27
Latitude 43.8600
Longitude 9.8400
Depth (km) 10 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> UNKNOWN
Event type earthquake
Origin ID 1195729


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


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)
Number of associated phases, regardless of their use for origin computation 6
Number of defining phases 4
RMS of the travel time residuals of the arrivals used for the origin computation (sec)
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.00000
Number of stations at which the event was observed 4
Number of stations from which data was used for origin computation 2
Magnitude information


Field Value
Value 0.0
Num. used stations
Type of magnitude M
Reference to an origin 1195729
Agency INGV
Autore Fonte esterna non nota
Time of creation (UTC) 2014-10-15 07:39:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.NRCA.HHN. 2011-04-12T12:45:12.10 10.0 undecidable manual Pg 0 0 0
IV.VMG.SHZ. 2011-04-12T12:44:46.90 0.1 undecidable manual Sg 0 0 0
IV.SEI.SHZ. 2011-04-12T12:44:43.37 0.1 undecidable manual Sg 0 0 0
IV.VMG.SHZ. 2011-04-12T12:44:42.98 0.1 undecidable manual Pg 0 0 0
IV.SEI.SHZ. 2011-04-12T12:44:41.22 0.1 undecidable manual Pg 0 0 0
IV.RM33.EHN. 2011-04-12T12:44:34.59 10.0 undecidable manual Pg 0 0 0
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download