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A level 2 was issued for the Benelux countries and north-eastern France mainly for severe wind gusts and to a lesser extent large hail and tornadoes.
First storms are forecast along the Channel region where warm air advection is strongest, but more storms are expected to form over the western Alps and western/central Germany as well as along the cold front over eastern and northern France. In the evening hours, linear organized storms are expected along the cold front from the western Alps to south-east England.
Vertical wind shear remains rather weak, but increases in the evening especially at low levels over the Benelux region and England. Best potential of organized convection is expected over the Benelux countries, where bow echoes may form along the linear squall line of the cold front. Severe wind gusts are forecast with these storms. The threat spreads into western central Germany later on, where pre-frontal storms can merge to the line. Weakening instability will reduce the threat after sunset. Isolated large hail and tornadoes are not ruled out, especially when supercells can form ahead of the squall line.
A level 2 was issued for the Benelux countries and north-eastern France mainly for severe wind gusts and to a lesser extent large hail and tornadoes.
First storms are forecast along the Channel region where warm air advection is strongest, but more storms are expected to form over the western Alps and western/central Germany as well as along the cold front over eastern and northern France. In the evening hours, linear organized storms are expected along the cold front from the western Alps to south-east England.
Vertical wind shear remains rather weak, but increases in the evening especially at low levels over the Benelux region and England. Best potential of organized convection is expected over the Benelux countries, where bow echoes may form along the linear squall line of the cold front. Severe wind gusts are forecast with these storms. The threat spreads into western central Germany later on, where pre-frontal storms can merge to the line. Weakening instability will reduce the threat after sunset. Isolated large hail and tornadoes are not ruled out, especially when supercells can form ahead of the squall line.
