A yellow weather warning has been issued for Cumbria for Thursday and Friday. Accumulations of 30-40mm is expected widely, with more on the fells.
A spokesperson from the Met Office said: "Periods of heavy rain are expected to develop across Wales and northwest England during Thursday and Friday.
"Accumulations of 30-40 mm can be expected widely, whilst areas of higher ground exposed to strong southwesterly winds are likely to see 50-80 mm.
"The heaviest rainfall, however, is expected to be across the hills and mountains of northwest Wales where 100-130 mm of rainfall is possible by the end of Friday."
