The emergency services will be tested today during an exercise at Wylfa nuclear power station on Anglesey.
The test will check the response of all the emergency services in the event of an incident involving the transport of radioactive material.
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Generally dry to start the day but turning increasingly cloudy this afternoon with the heaviest outbreaks in the north.
Rain and drizzle will clear eastern counties this evening. Remaining mild with breaks in the cloud by dawn.
A leading vet charity warns that you could end up with a stressed, lonely or even aggressive pet if you don't care for it properly.