Storms are set to batter the country today and into this weekend with winds as strong as 60mph along with 100mm of rain.
The Met Office has issued thunderstorm warnings across much of the country including Scotland, Northern Ireland, northern England and North Wales.
It is in place from Friday until the end of Saturday and says that up to 100mm of rain could fall in some places, with the possibility of between 20 and 30mm in just one hour.
Spokesman Grahame Madge said: "We do have a very unsettled weekend in prospect, with a lot of it covered by a thunderstorm and rain warnings.
"We have got an area of low pressure which will be milling around over the UK bringing rain to quite large parts, so I think everywhere can expect to see quite heavy showers."
On Friday forecasters have predicted "heavy, thundery downpours" with winds to batter the south during the day.
By night the heavy rain will spread to the north of Wales and England.
Saturday could see the worst of the stormy weather with "heavy and thundery" showers likely to lash the nation in places.
The Met Office said the miserable picture would continue into Monday before getting drier on Tuesday.
How will the storm affect your area? Here is the weather forecast for the UK's regions.
North East
Headline:
Scattered showers, with thundery downpours possible.
Today:
Overnight rain soon clearing during the morning with a few brighter intervals possible. Showers also moving into the Pennines, however, before spreading to all parts by the afternoon. These heavy and thundery at times, with slow moving torrential downpours possible. Maximum temperature 20 °C.
Tonight:
Heavy showers, with some thundery bursts continuing into the evening, before gradually easing overnight. Staying rather breezy and cloudy. More persistent rain moving into western Pennines by dawn. Minimum temperature 11 °C.
North West
Headline:
Slow moving showers leading to some prolonged showery rain.
Today:
Slow eastward moving widespread showers develop throughout the day leaving some longer periods of thundery rain, some possibly torrential, particularly in the afternoon. Some more pleasant sunny spells possible between downpours. Becoming breezier through the afternoon particularity in coastal locations. Maximum temperature 20 °C.
Tonight:
Showers becoming persistent through the evening, locally heavy or torrential. Quite blustery over night with some locally strong winds at coastal locations. Cloudy skies leading to a mild night. Minimum temperature 11 °C.
East Midlands
Headline:
Scattered showers, with thundery downpours possible, mainly north.
Today:
Mostly dry start with a few brighter intervals, but also one or two showers around. Further showers then developing by the afternoon, turning heavy and perhaps thundery at times, with torrential downpours possible, mainly across northern areas. Maximum temperature 22 °C.
Tonight:
Heavy showers continuing into the evening, before easing overnight. Clear spells developing, with most parts dry, but staying rather windy. Further rain moving into the northwest during the early hours. Minimum temperature 11 °C.
West Midlands
Headline:
Sunshine and showers. Some heavy and thundery downpours.
Today:
Unsettled weather with scattered showers throughout the region, some locally heavy and thundery. Showers easing later in the day, and cloud cover reducing to give longer sunny spells. Winds gusty. Maximum temperature 21 °C.
Tonight:
Becoming mostly dry with a few clear spells during the evening. However, cloud increasing overnight with further showery rain arriving later, perhaps heavy. Remaining breezy. Minimum temperature 12 °C.
London and South East
Headline:
Breezy, with sunny spells and scattered showers, heavy at times.
Today:
Mostly dry start with a few brighter or sunny intervals, but also one or two showers around. Further showers then developing by the afternoon, turning heavy at times, with isolated thundery bursts possible. Rather windy, especially along the coast. Maximum temperature 22 °C.
Tonight:
Heavy showers easing during the evening with clear spells developing. Most parts staying dry, however the odd heavy shower also spreading northeast from the English Channel through the early hours. Minimum temperature 11 °C.
South West
Headline:
Long sunny spells, with thundery showers throughout the day.
Today:
A day of sunshine and showers. Showers starting early and continuing through the day, getting heavier in the afternoon, with thunder in places. Winds blustery throughout the whole region, although feeling warm in the sunshine, and out of the wind. Maximum temperature 20 °C.
Tonight:
Showers and cloud cover clearing through the evening, with blustery winds easing a little. Further showers reaching Cornwall in the early morning, but staying mostly dry with long clear spells. Minimum temperature 12 °C.
Wales
Headline:
Showers expected through the day with thundery downpours possible.
Today:
Some sunny spells although plenty of showers. There'll be some heavy downpours, possibly thundery especially across the north of the country. Breezy winds, particularly in the north and around the coast. Feeling cool during the blustery periods. Maximum temperature 19 °C.
Tonight:
Showers will ease in the south and east to give some clearer spells for a while overnight. However, blustery downpours will continue in the northwest, becoming more widespread again overnight. Minimum temperature 13 °C.
Northern Ireland
Headline:
Heavy showers today. Rather warm and humid.
Today:
Unsettled with scattered showers, heavy and slow moving in places with a risk of some torrential downpours. Feeling warm in any sunshine. Humid. Light and variable winds. Maximum temperature 21 °C.
Tonight:
Mostly cloudy with showers, heavy at times, continuing through the evening and night. Showers becoming less widespread later. A warm and humid night. Light winds. Minimum temperature 14 °C.
Scotland - Central, Tayside and Fife
Headline:
Unsettled with heavy showers today. Warm.
Today:
Mostly cloudy with scattered showers, heavy at times. Some longer spells of rain across the north this morning. Best of any sunshine in sheltered southern and western areas. Maximum temperature 20 °C.
Tonight:
Heavy showers becoming less widespread through this evening. Then the rest of the night will be mostly cloudy with occasional showers, still heavy in places. Warm and humid. Minimum temperature 14 °C.
