The GFS is starting to come in line about that Eastern Canada and Newfoundland Low Pressure that is modelled today from ICON and UKMO- to start entering the UK at about 120, 144 hrs from today.
Crossing NW Atlantic and tracking SE, but losing the cold air as it mixes into less cold air in North Atlantic.
Blocking over SW Norwegian Sea to our North, and in Iceland and Greenland is showing up, GFS, UKMO and ICON show that cold air, but it is coldest over Central and North Greenland and Iceland and to the North and NE of the Norwegian Sea.
That Deep Low might weaken as we see more updates over next 5 days- a downgrade maybe possible.
If that cold air to our North and NE wraps in more closer around this SE Tracking PV Low that is to move SE from NE USA Newfoundland at 96-120 hours, it needs to really be strong and windy one to be able to drag colder East and NE winds if it does move SE from the UK after Tuesday next week.
The GFS, ICON and UKMO also have more Deep Low's over Eastern and Northern Canada shown in today's 12z run, moving to Eastern NE Canada and West to NW of Newfoundland at T120 - T144hrs.
With High Pressure over Greenland and Norwegian Sea and Iceland and Western N. Atlantic Eastern USA maybe there is some optimism I cannot guarantee- more updates will give accurate picture for November 10th to 12th et all.
Updated Comment for period 1988 to 2023.
The Above average Winters, Spring Summer and Autumn Season in the UK, affected by El Nino and La Nina, though Cold Spells with proper frosts happen to occur in Winter's they tend to last 3-12 days. Some 2-3 weeks of Mild SW flows are a regular thing. UK has mixed weather in all Seasons. It can be mild damp wet in winter, Cold frosty foggy Snowy Spells if very lucky, or it can be frosty and cold in March to May that is the worst part, and sometimes Cloudy overcast very chilly even in May and June or even in September to November, less frost and snow.
Springs, Summer's have trended to be well above average some hot heatwaves lasting 3-5 days with greater amounts of sunshine, and all 4 seasons feature lengthy long fetch mild SW flows sometimes with strong winds and heavy rain or settled dry sunny spells. or extremely heavy thundery showers or longer spells of Thundery rain in any Season in the UK. And 2 year long droughts.