Exact moment 645-mile Arctic blast engulfs nearly all of UK – new maps

A blast of Arctic air looks set to engulf almost the entire country later this month as temperatures are tipped to plummet to single figures, weather models show.Weather maps show a cold front gripping a 645-mile stretch of Britain from the far north of Scotland almost to the Hampshire coast at 6pm on Saturday, October 26.The late October chill, which models show originates from the Arctic, looks set to push across to the UK from Scandinavia, according to weather expert Jim Dale, founder and senior meteorologist at British Weather Services.He described the cold snap as a “traditional” plunge not uncommon for the time of year, adding it might send temperatures into single digits in some parts of the UK.Mr Dale told Express.co.uk: “It’s what you might call a traditional plunge. I’m not sure we’ll get much air frost out of it. It’s not something to write home about at the moment.Mr Dale said cold air is set to arrive from October 25 in northern areas and will start to sink south. He…