VALID FOR 20-11-2013

A large trough extends from northern Europe towards Mediterranean with a well defined SFC low crossing central Italy and Adriatic sea. A new intense short wave with surface low crossing North Sea and UK.

A MDT risk has been issued for S Adriatic sea into Ionian sea, Albania and W Greece with threat for torrential excessive rain, severe winds, tornadoes and large hail. Locally, very high rain amounts are expected.

A SLGT risk has been issued for areas surrounding the MDT risk as well as Aegean sea, Tyrrhenian sea, S Italy and towards N Tunisia with threat for severe winds, heavy excessive rain and waterspouts.

A SLGT+ risk has been issued for North Sea and E UK with threat for severe winds and heavy rain.