A weather system originating from Russia is anticipated to potentially bring snowfall to various regions of the UK by the conclusion of Christmas Day, as per certain weather models.
Nick Finnis, a forecaster at Netweather, indicated that upcoming conditions appear to be shifting towards a drier and colder pattern for the following week. There is a possibility of a southeasterly flow developing, which could usher in colder air from Russia just in time for Christmas.
The latest Netweather forecast highlights that some weather models are projecting temperatures to plummet to -9C in England and Wales on the 25th of December, creating conditions conducive for sleet or snow in sporadic easterly showers. Nevertheless, other models are suggesting a scenario of no wintry conditions and predominant rainfall.
Finnis elaborated that recent midday weather model runs seemed to align on the concept of a significant cold air mass over northwestern Russia being tapped into, with a strengthening easterly flow expected to transport this cold air towards the UK by Christmas Day.
Different weather models, such as GFS, GEM, and ICON, have shown varying predictions. GFS model indicates the possibility of cold air supporting snow showers in the north, while GEM and ICON models suggest that cold air conducive to snowfall might cover all parts of the UK by the end of Christmas Day.
Finnis emphasized the significance of the position and orientation of the high and low-pressure systems surrounding the UK. Minor variations in these systems can significantly impact the extent of cold air moving in from the east.
The Met Office has stated today that the likelihood of experiencing a White Christmas this year is very low. A mere instance of snowflake falling anywhere in the UK on December 25 is required for the official declaration of a White Christmas.
Tom Morgan, an operational meteorologist at the Met Office, expressed confidence in a transition towards much drier conditions in the upcoming week due to the dominance of high-pressure systems over the UK. He noted that the month has been characterized by persistent wet weather brought by low-pressure systems.
BBC Weather forecasters also consider the chances of a White Christmas to be slim for most regions. They predict a gradual decline in temperatures through the week with the introduction of easterly winds, but any snowfall is likely to be limited to higher altitudes. For the majority, a White Christmas is improbable, with potential frost and fog on calmer nights.
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