Sunday 10 Jan - Tuesday 19 Jan
Sunday begins with a band of cloud and patchy rain pushing in southeast across Scotland. Brighter and colder conditions follow to the far northeast of Scotland and Northern Isles, though further wet weather is likely later. Into Monday, high pressure to the west will decline allowing Atlantic frontal systems to bring in milder conditions, with temperatures closer to the average for this time of year, though further wintry hazards across the far north. Then past Wednesday, as this high pressure develops to the southwest of the UK, mobile and cyclonic northwesterly flows bring unsettled conditions with outbreaks of rain and, at times, strong winds as well as occasional colder temperatures. Drier, more settled conditions are then probable across the south of the UK, with frost and fog fairly prevalent.
Tuesday 19 Jan - Tuesday 2 Feb
Confidence for this period is low, though there is a signal for Atlantic mobility to weaken which perhaps allows conditions, at least in the north, to become drier and for temperatures to be closer to average. However, there is still a chance of cold air outbreaks in the north as flow across Scandinavia pushes across the North Sea. This would confine more unsettled conditions to the south, as well as milder than average temperatures. Further, this boundary between the cold and milder conditions could also allow for some significant snowfall where the two air masses.
https://www.metoffice.gov.uk/
'Occasional colder' temperatures.
A 'signal' for Atlantic mobility to weaken.
Still a 'chance' of cold air outbreaks.
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Downgrade or what, compared to previous updates? I wonder if their long range outlooks are based on GFS Operational runs? If the GFS run goes cold /blocked does this mean their long range outlook will be updated in line with the GFS runs?
Keep in mind this was yesterday's update:
Friday 8 Jan - Sunday 17 Jan
Some outbreaks of rain, sleet and snow are likely across central areas initially, with wintry showers also feeding in from the North Sea. Through Friday precipitation will be tending to decay in both of these regions, with cold, fine and dry conditions becoming more widespread. Over the weekend conditions across the country are likely to turn more unsettled with cloud and patchy rain spreading east and temperatures recovering to near average for many, by this time the risk of sleet and snow will most likely become confined to the north of the country. Through the following week rather cold conditions are most likely to re-establish nationwide, with northern and western areas continuing to see frosts.
Saturday 16 Jan - Saturday 30 Jan
Confidence is low during this time but more unsettled conditions may continue to affect at least southern and central parts of the UK, with drier and colder weather being retained in the north. Whilst generally remaining colder than average some milder interludes are possible in the south. Later in the month an increased chance of colder conditions returning nationwide. Throughout there is a risk of snowfall and other wintry hazards.
Edited by user
05 January 2021 14:45:22
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Reason: Not specified
Home Location - Kellands Lane, Okehampton, Devon (200m ASL)
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Sean Moon
Magical Moon
www.magical-moon.com