The UK is set for a deluge heavy rain this weekend with 'danger to life' flood risks in place across Britain.
Forecasters say there is a chance of power cuts as well as loss of services to homes and businesses in some parts of the UK this week.
The Met Office have issued two yellow weather warnings from Friday noon to Saturday at midnight, covering most of Wales and a second stretching from Leeds to Carlisle.
Meanwhile, the rest of the week will see "wet and windy" conditions with temperatures set to drop for the whole country.
Met Office spokeswoman Nicole Maxey said: "We are are looking at 40-60mm of rain across parts of the country during the warning period, with up to 100mm in insolated areas - so pretty heavy rain."
The Met Office's yellow warnings say there is "a small chance of fast flowing or deep floodwater causing danger to life," as well as "delays and cancellations to train and bus services."
On Wednesday, Ms Maxey said there will be "spells of rain from the west, spreading into Northern Ireland and west Scotland for this afternoon.
"Elsewhere it is quite likely to be wet and windy," she added.
"Tonight, there could be heavy rain and wind in the west with some coastal gales."
She said: "For tomorrow, there will be fog around and we will see some rain which could be heavy, spreading across the east of England.
"The rain will be slightly wintry in higher grounds like Snowdonia and the Pennines, so we'll see some sleet."
Ms Maxey said the yellow weather warning begins on Friday with up to 100mm of rain in "isolated areas" especially on higher ground.
"Some of that rain could again fall as sleet in the Pennines and Snowdonia," she said.
By the weekend the country will start seeing some colder temperatures dropping to around 10-11 degrees from this week's mid-teens.
"We have a cold week next week," Ms Maxey said, adding we will likely see some overnight frost and snow in the higher areas.