Issued: 0530hrs Thursday 31st December 2020
Duty forecaster: Alexi Venerus
Cold air pushes into northwest Europe. Mediterranean turning unsettled.
Showery outbreaks of rain spread over Portugal and the northwestern half of Spain on Thursday. These turn wintry over higher ground. Staying dry and fine to the southeast and for the Balearic Islands. Showers, these locally heavy, affect Corsica, Sardinia, Sicily and far southern and northern parts of mainland Italy. Staying dry and bright for central areas. Heavy showers spread across Greece and into western Turkey though much of Turkey stays dry and sunny.
A front brings showery outbreaks of rain, sleet and snow across much of France, the Low Countries and into western Germany. These will be locally very heavy.Some snow showers spread into the far west of Switzerland too but otherwise it's a dry and fine day across the Alps as well as for the Czech Republic, eastern Germany and Poland. Cloudy for Slovakia and Hungary with rain and sleet for far eastern areas.
Frequent outbreaks of rain, sleet and snow for Denmark, southern Sweden and Finland as low pressure starts to fill up here. Isolated snow showers affect southern Norway as well as central and northern parts of Sweden. An area of wintry precipitation clears north of the Baltic States through Thursday morning leaving a dry afternoon with a few spells of sunshine.
It will be a largely cloudy day across Spain and Portugal with rain, sleet and snow affecting many areas at times, heaviest to the north. An area of low pressure develops over the Mediterranean bringing showers or longer spells of rain to the Balearics, where it could fall wintry over higher ground, as well as northern and western areas of Italy, Corsica and Sardinia. Southern Italy and Sicily will be cloudy but mainly dry. An improving day across Greece with some patchy rain affecting over west Turkey.
Outbreaks of rain will be confined to mainly southern parts of France but with some wintry showers affecting northern areas too. West Switzerland will see some rain and snow with southern part of Austria also seeing some patchy rain and snow showers but drier elsewhere here. Rain affecting western parts of Croatia, Slovenia and Hungary. Drier further east down the Balkans. Largely dry across eastern Europe.
Mostly dry across Norway but with some snow in the far southeast. Sweden will see snow fall in the situh but remain largely dry further north. An area of wintry precipitation pushes acxross the Baltics as the day progresses. Snow fall will soon clear from the south of Finland allowing for an improving day here. Rain, sleet and snow expected across parts of Denmark.