theweatheroutlook

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Ally Pally Snowman
03 December 2023 12:16:57

Alaro still insists it will be snowing across the southeast this lunchtime! It's currently 6 degrees.

https://modeles3.meteociel.fr/modeles/alaro/runs/2023120306/alaro-1-7-0.png?03-10 

Originally Posted by: Rob K 



Yes its definitely a model for the eternal snow optimist.
 
Bishop's Stortford 85m ASL.
Quantum
  • Quantum
  • Advanced Member Topic Starter
04 December 2023 00:05:15

Regarding Sunday's lack of snow. A very small chage could make a big difference.

The reason we are not getting snow on that northern edge is the import of some warm dew points up the E side of the north sea and then advected over land.

If the land is a bit frostier, or the rain arrives later in the day; the temp differential between the land and the sea will be stronger; causing the wind to be more westerly; that could make a massive difference. Stay tuned.
 

Originally Posted by: Quantum 



So it turned out this actually happened for me?!
And I've ended up with literally 7 hours of wet sleety unexpected snow. Totally pointless horendous wet sleety rubbish, but even so; a massive surprise at nearly sea level. Usually I end up being on the other side with surprise rain events.
 
2023/2024 Snow days (approx 850hpa temp):
29/11 (-6), 30/11 (-6), 02/12 (-5), 03/12 (-5), 04/12 (-3), 16/01 (-3), 18/01 (-8), 08/02 (-5)

Total: 8 days with snow/sleet falling.

2022/2023 Snow days (approx 850hpa temp):

18/12 (-1), 06/03 (-6), 08/03 (-8), 09/03 (-6), 10/03 (-8), 11/03 (-5), 14/03 (-6)

Total: 7 days with snow/sleet falling.

2021/2022 Snow days (approx 850hpa temp):

26/11 (-5), 27/11 (-7), 28/11 (-6), 02/12 (-6), 06/01 (-5), 07/01 (-6), 06/02 (-5), 19/02 (-5), 24/02 (-7), 30/03 (-7), 31/03 (-8), 01/04 (-8)
Total: 12 days with snow/sleet falling.

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