What is freezing rain and what makes it so dangerous?
An amber warning for snow and ice, with the risk of freezing rain, covers most of Wales and central England until midday on Sunday.
Freezing rain, which makes up what are commonly known as ice storms in North America, is a rarity in the UK because the conditions for it are quite specific, according to the Met Office.
But what is it and how is it different to snow?
Freezing rain is rainfall that has become “supercooled” as it falls from the sky.
Up to 30cm of snow expected in parts of UK – follow live
It starts when snow, ice, sleet or hail high up in the atmosphere melts into rain when it falls through the layers of warmer air below.
If the rain then passes through a sub-zero layer of air just above the ground, it can remain liquid and instead become “supercooled”. This is the key to freezing rain.
Supercooled water will freeze on impact – forming a clear layer of ice on cold surfaces such as trees, roads and power lines.
Why is it dangerous?
It’s once it hits the surface and turns to ice that it can pose a real threat.
The ice is very clear, often referred to as black ice, because it is so difficult to see, making it treacherous for pedestrians and drivers.
Freezing rain on a car. Pic: iStock
Sky News meteorologist Kirsty McCabe explains: “The supercooled rain hits the ground and freezes instantly on impact, and that creates a thin layer of ice, also known as glaze, and it’s clear, so you can’t see the ice, which makes it really treacherous.”
If it hits power lines or tree branches, depending on how much rain there has been, the weight of the ice can cause them to break off because they can’t support the weight.
It can also make it difficult to open your car door if there is enough of it.
Get the five-day forecast where you are
Where is it expected to fall?
From 6pm on Saturday to midday on Sunday an amber warning for snow and ice, with the risk of freezing rain, covers most of Wales and central England, including the Midlands and Liverpool and Manchester in the North West.
But McCabe says it’s Wales where people should be particularly wary of freezing rain.
What precautions should people take?
The best thing people can do is take extra care when travelling. As it is so hard to see, it’s difficult to judge just how icy road surfaces are.
The RAC says freezing rain is arguably the most treacherous of all conditions for motorists.
They urge people not to drive unless necessary, but say those who do need to should check they have plenty of fuel and oil and check their tyre treads.
They also encourage drivers to make sure their lights are working and check they have screenwash.
A man’s body has been recovered from an area of flooding in North Yorkshire, police have said, as major incidents have been declared in two counties.
The body was found near Intake Lane in Beal, close to Eggborough and Knottingley.
Police believe the man may have entered the water in the last 24 to 48 hours.
Follow the latest on the weather
North Yorkshire Police said: “Despite extensive enquiries, including with our colleagues in Humberside and West Yorkshire Police, we have been unable to identify him.
“He was found without any identification or personal belongings.”
The man was also described as white, in his early 50s to 60s, with light brown short hair and stubble.
He was wearing brown walking boots, blue denim jeans, a multicoloured knitted jumper and possibly a dark green waterproof coat, police added.
It comes after Leicestershire and Lincolnshire both declared a major incident in response to the extreme weather hitting the UK and Ireland.
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Leicestershire Fire and Rescue was the first emergency service in England to declare an incident and said it had received more than 200 calls since Monday morning over widespread flooding.
Crews had found cars stuck in floodwater and evacuated residents from flooded homes and rising waters, with some 17 people rescued as of 1.45pm.
The Lincolnshire Resilience Forum declared a major incident shortly after, and noted that emergency services had rescued children who were stranded at a school in Edenham.
Meanwhile, the Met Office has three yellow weather warnings – each for snow and ice – in effect throughout Monday evening and Tuesday morning.
Pic: Met Office
A warning covering the west and north coast of Scotland – reaching into Inverness and Aberdeen – will last until midday, while an alert in effect for all of Northern Ireland will last until 11am.
The Met Office has also issued a warning covering Wales and parts of northwest England on Monday evening, moving into southwest England, the Midlands and parts of southern England in the early hours of Tuesday.
On Wednesday, a yellow weather warning for snow is in effect across the south of England – stretching from just above Truro in Cornwall to Canterbury in Kent – from 9am to midnight.
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