The Met Office has issued severe weather warnings for Wales, the West Midlands and south-west England. Issuing the yellow warning, which urges people to be prepared, the national forecaster said:
Periods of heavy rain are likely across the southern half of Wales, south-west England and the south-west Midlands from the beginning of Friday until Saturday morning.
It is looking increasingly likely that one area of heavy rain will move through during the small hours of Friday followed by a drier interlude, before further heavy, persistent rain moves eastwards later on Friday into the early hours of Saturday.
However there still remains considerable uncertainty in the details of the heavy rain by late Friday and the warning may be adjusted further as the event approaches. The public should be aware of the possibility of disruption to travel due to localised flooding.
More top news
Four people are presumed dead after heavy rainstorms triggered flooding in south-west Germany.
A man has been arrested over an offensive Hillsborough shirt
Early low cloud will gradually retreat to North Sea coasts to leave many with a fine day, particularly in the west.