New storm map shows horror 80mph gales and torrential rain battering UK in hours

A blast of 50mph winds and buckets of rain could be just days away, new maps suggest. (Image: WXCHARTS.COM / Getty)

Millions of Britons are bracing for 80mph winds and a torrential downpour in just days, new weather maps suggest.

Forecast data collected by WXCHARTS.COM shows a huge blob of red and orange looming over large swathes of the British Isles on Sunday, indicating a considerable downpour.

A total accumulated precipitation map showing conditions at 3am that day shows multiple major cities in northern England and Scotland, including Manchester and Edinburgh, accumulating between 40 and 62mm of rain, as all four UK nations are set to be soaked.

Parts of Wales are expected to see accumulations as high as 51mm, while in Northern Ireland totals range between 36 and 42mm.

Accumulations are currently expected to be slightly lower in the northernmost regions of mainland Scotland, and southern England, with areas around London appearing to be set for build ups in the mid to upper teens.

Map showing total accumulated precipitation on Sunday (3am) (Image: WXCHARTS.COM)

Map showing peak wind gust on Sunday at 9am. (Image: WXCHARTS.COM)

A separate chart showing peak wind gusts at 9am that day suggests wind gusts in excess of 120kmh (80 mph) are to lash most of England, Wales and Northern Ireland.

Patches of slightly slower winds have been forecasted in Scotland and the southeast coast of England.

The Met Office's three to five-day forecast for Saturday to Monday says its expected to be wet and very windy on Saturday, with severe gales possible in places with Storm Darragh.

"Some snow in the north. Gradually becoming more settled during Sunday and Monday, winds easing," it adds.

The government agency warns Darragh will bring "very strong winds and heavy rain to the UK later on Friday and through the weekend", and has issued a series of yellow weather warnings that will remain in force until Sunday.

On Saturday, an Amber weather warning for wind is in place to cover the areas at risk of the greatest impacts from Storm Darragh.

Met Office Chief Forecaster Jason Kelly said: "Storm Darragh is an evolving system and will bring several hazards, including wind gusts of up to 70-80mph around western coasts, especially from Devon and Cornwall to southwest Scotland and Northern Ireland.

"Wind speeds in inland areas will be slightly reduced with maximum gusts expected to reach 60-70mph."

You can find the latest weather warnings and guidance here.