The majority of England and Wales are under heavy rain alerts from Sunday evening until Monday morning, with localized floods probable and a warning of frozen water pipes bursting.
The United Kingdom is on its penultimate day of the cold snap before a significant temperature increase on Monday, but widespread warnings for snow, ice, and rain remain in effect.
Temperatures on Sunday ranged from 3 to 7 degrees Celsius (37 to 44 degrees Fahrenheit) across the majority of the country, with gradual warming forecasted for early evening and the night.
Monday is anticipated to bring highs of 13 to 14 degrees Celsius (55 to 57 degrees Fahrenheit) to London, Edinburgh, Belfast, and Cardiff.
That is a huge increase from previous daytime temperatures that have failed to rise above freezing, with several locations seeing temperatures far below zero overnight.
Tuesday in Braemar, Scotland, it was -17.3 degrees Celsius.
However, the transition from subfreezing to almost spring-like temperatures is accompanied by a warning of hazardous road conditions.
Until 8 p.m. on Sunday, Met Office alerts for freezing rain and ice cover the majority of northern England, with a yellow snow notice extending to northern Scotland.
Rare in the United Kingdom, freezing rain happens when it reaches a cold surface and freezes very instantaneously, producing dramatic effects as the raindrop briefly expands out before freezing.
From Sunday at 6 p.m. through Monday at 6 a.m., the majority of England and Wales are under a heavy rainfall warning, with localized floods probable.
The UK Health Security Agency (UKHSA) has issued a level three cold weather advisory till midnight in England, warning of increased health risks for vulnerable individuals.
The temperature rise may also lead some pipes to burst as the water thaws, as was observed in areas of London this week when 60 firefighters were called to assist residents in flooded streets.
Water UK has encouraged individuals to ensure that their pipes are adequately insulated.
As frozen ponds and lakes are now expected to swiftly thaw, fire chiefs have cautioned the public not to go on the ice following many calls in the same week that four youngsters perished in an accident.
The London Fire Brigade (LFB) shared a photo of children and adults on a frozen pond in Wimbledon.
“In #London, there are sadly more instances of individuals walking over frozen ponds. Please do not do this in the strongest terms imaginable!” It uploaded.
“It may appear robust enough to stand on, but this is rarely the case. If you fall into ice water, there is a great risk of hypothermia, which can be fatal “LFB added.
