A report into an air crash in Powys has found that the plane struck cloud-covered trees near Welshpool.
Two men died in the crash in January, including
The Air Accidents Investigation Branch said the crew may have misjudged the height of a hill just outside the town.
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The heaviest bursts are expected in the south and east, with some western areas either remaining dry or becoming dry by dawn.
Many places will start dry, but rain in the southeast will spread to most for a time overnight.
The family of Isaac Nash who went missing after being swept out to sea last summer have presented a cheque for £10,000 to the RNLI.