Heavy rain is expected to bring with it some flooding and transport disruption this weekend.

The Met Office yellow warning for rain is set to come into force on Saturday (October 3) as heavy rain pushes north and west across the UK.

The rain is expected to clear from much of southeast England by Saturday afternoon, but will remain heavy and persistent throughout Saturday and into mid-Sunday across southwest England, much of Wales, eastern Scotland, and the far northeast of England.

Forecasters are warning this is likely to bring flooding and some disruption to travel, with many places set to see 25-50 mm of rainfall, with totals of 100-125 mm expected over the high ground of eastern Scotland, and perhaps parts of Wales and southwest England.

The forecast for Powys in particular is also a wet one, with the Met Office saying there is a 90 per cent chance of heavy rain throughout the day on Saturday. There could be up to 100mm – four inches – of rain in parts of Wales over the weekend.

Deputy chief meteorologist at the Met Office, Nick Silkstone, said: “Saturday will be a very wet day as heavy bands of rain push north and west across the country, followed by showery rain on Sunday.

"It’ll be cold and windy too with a risk of coastal gales in some areas. The Met Office has issued a rain warning covering large parts of the country over the weekend and we’re urging people to keep a close eye on the weather forecast and warnings during this spell of disruptive weather.”

It will turn more showery during Sunday and become significantly less widespread.

Jonathan Day, Flood Duty Manager at the Environment Agency, said: “Heavy rain will bring the potential for surface water flooding and perhaps some river flooding across the south of England on Friday. More widespread and persistent heavy rain across much of England will bring the potential for further river and surface water flooding over the weekend.

“Environment Agency teams have been working hard to clear grills and weed screens in areas which may be affected, and are ready to support local authorities leading on responses to surface water flooding incidents, should they occur. We urge people to stay away from swollen rivers and not to drive though flood water – it is often deeper than it looks and just 30cm of flowing water is enough to float your car.

“You can check your flood risk, sign up for free flood warnings and keep up to date with the latest situation at https://www.gov.uk/check-flood-risk, call Floodline on 0345 988 1188 or follow @EnvAgency on Twitter for the latest flood updates.”