Thick snow instantly turned to light rain. Not even a gradual transition. Very messy. sloppy front.
Slight change in wind direction may push the cold air elsewhere!
The last snow event (in my sig) went the opposite direction I saw rain to snow within about 15 minutes. Evap cooling events can be downright wierd as you can end up with very local pockets of cold air. For example if there is a very big shower later that generates its own downdraught and then advects that cold air somewhere else it could turn another light shower to snow unexpectedly. Usually this doesn't happen because winds are too strong and blown directly from the sea. However today we have the really quite rare combination of 'cold enough' uppers under a slack low.
When evap cooling is involved it also shows how pointless uppers become; its all about wind speed, direction, and humidity.
EDIT: you'll notice on my map I put literally the entire british isles (except the far SW of Ireland, channel islands, scily and the far SE) under the 20% or above zone. I don't usually do this and its deliberate, I expect basically anywhere could see snow today and it will be very local depending on where these little pockets of cold air are.
Edited by user
01 March 2024 11:12:09
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Reason: Not specified
Twitter: @QuantumOverlord (general), @MedicaneWatch (medicane/TC stuff)
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.