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The freezing air is set to move in from Monday October 26, prompting vigorous areas of low pressure and unsettled conditions across the UK. Northern parts can also expect snowfall from
October 27, which could last for over a week. BBC forecasters warn the period will be markedly unsettled, as a strong jet stream over the north Atlantic heads towards the UK. This will
coincide with a cold plunge of air moving in from Canada and the USA. The forecasters said: “The cold air over Canada will contrast with the much warmer than average sea surface temperatures
off the east coast of Canada and over the north-west Atlantic. “Strong horizontal contrasts in temperature here give the jet stream above some added strength.” The cold plume is set to
prompt heavy cloud, spells of rain and strong winds. Heavy rainfall is expected for the south of the UK but parts of inland could see dry interludes. Weather maps from WXCharts show heavy
rainfall is expected over much of England, Wales and Northern Ireland on Tuesday. The chart shows the weather front will move in from the south west and make its way north. JUST IN: WIND AND
RAIN TO BATTER BRITAIN WITH 'SEVERE GALES' The snow risk continues to rise through Wednesday and is more widespread across Scotland by 6pm. The weather charts show the north west
of the country can expect a high chance of snow on Thursday morning, as the map turns bright red. The chart stays red through Thursday, with the snow risk spreading further south by Friday
morning. The north of England and parts of Wales also appear on the chart, with about a 40 percent chance of snow at 6am. But the risk of snow reduced dramatically by the afternoon. The high
snow risk in the north of England continues over the weekend and into the start of November.