Outlook day 1 (valid: 15/04/2018)

VALID FOR 15-04-2018

SYNOPSIS

An extensive ridge dominates Europe, a weak upper low is located in southern Mediterranean. A large trough with deep cyclone approaches the British Isles.

DISCUSSION

A SLGT risk has been issued for central Italy with threat for severe storms, capable of producing marginally large hail, severe winds and torrential rainfall. Being under a weak upper low, a lot of convective activity will be on going during the daytime hours.

A MRGL risk has been issued for central Italy, Tyrrhenian sea into N Tunisia with similar threat as within the SLGT risk area, but more isolated storms are possible.

A MRGL risk has been issued for extreme NE Germany, WSW Poland, E Czech Republic, W Slovakia and N Hungary with threat for isolated storms, capable of producing marginally large hail, strong to severe winds and torrential rainfall along the difuse frontal boundary. Threat diminishes in the evening when instability vanishes.