Storm Christoph could bring an average of two months of rainfall to some parts of the UK in just two and a half days.
Heavy rain weather warnings are in place across the country, and the unexplained conditions could also result in significant flooding, high winds, and snowfall as the storm hits the country by mid-week.
The Met Office’s most severe weather warning – amber against rain – has been in effect in parts of the Midlands and Northern England as of Tuesday morning, while a less severe yellow warning has been in effect in the rest of England, Wales, parts of Scotland and North Ireland.
Met Office forecaster Simon Partridge said it was not a “traditional” storm.
He explained, “It’s going to be windy, but it’s not based on wind strength at all, it’s really due to the disturbance caused by rain.
“There are already parts of Cumbria that have seen over 80mm of rain since Tuesday midnight and there are a large number of places that have seen 50mm and we will see more rain for the next 24 to 36 hours. “
According to the Environmental Protection Agency, it rained 77mm at Honister Pass in Cumbria on Tuesday between midnight and 6pm.
Mr. Partridge said the storm caused the average monthly rainfall to double in some areas in a matter of days.
He said: “In areas that have already seen between 50mm and 70mm, the warning is off until Thursday noon, so an extremely long period of time, but by then we could see up to 150mm to possibly 200mm of precipitation.
“In the Midlands, for example, the average rainfall for the entire month is 73mm, so they could easily get twice as much in two and a half days.”
Floods have already risen in parts of the country. A motorist is stranded in Leicester and workers in York prepare flood defenses near the River Ouse on Tuesday morning.
There were also traffic disruptions on Tuesday. Network Rail reported delays and some line closures in the northwest in the evening.
The storm has made people concerned in areas hit by the floods in late 2019 and preparing for the worst.
However, residents of Fishlake, South Yorkshire, which was cut off from flooding just over a year ago, said they are much better prepared this time as many are dropping sandbags in front of their properties on Tuesday.
As of 5 a.m., the Environment Agency has issued 37 flood warnings and 167 less severe flood warnings across England.
A serious incident was reported in both Greater Manchester and South Yorkshire ahead of the expected heavy rains.
North Yorkshire County Council said there are more than 15,000 sandbags around the county.
Meanwhile, Public Health England (PHE) issued a cold weather alert for the Northeast, Northwest and Yorkshire and the Humber at 9 a.m. Thursday through January 25.
The agency said the risk of flooding will increase public health risks from the severe cold weather.