Stationary convective line in Liguria – Oct 30, 08:50 UTC
A nearly stationary convective line formed on the surface wind convergence in Ligurian sea and has been mainaining for over 3 hours. Conditions are favourable for training effect cells and heavy rainfall across the Liguria and possibly NW Toscana included in the TSTM/SLGT risk area of Day 1 Outlook for 30/10/2013.
Near 50-70 mm rain amounts have been reported in Genova area with further rainfall expected.
Over the sea, conditions are fairly favourable for tornadic waterspouts with significant low level shear, storm-relative helicity and buoyancy.