Lol, since I've been gone apparently the MO thread has become like UIA and I'm not the cause! I think the mild weather is getting to everyone, people need to chillax just a little!
Anyway I'm going to bore everyone with my polar vortex stuff again. Still digging those 500hpa temperature charts. However on the 18Z I found this.
Not only has the polar vortex weakened but a bit has chipped off right next door to us! Well I'm sure thatl bring a couple of chilly days.
Anyway the details arn't really important at 288hr anyway; the point is we are seeing a very consistent gradual weakening of the polar vortex on the GFS; its a trend that should make us optimistic (well it makes me optimistic anyway) about the start of January.
By 384hrs the polar vortex is heavily under attack.
Well it has a big gaping hole in it anyway.
What do people think, is there anything too all this? Dr Cohen actually thinks the polar vortex is going to weaken too, although I'm sure her reasoning is more scientifically rigorous than mine.
https://www.aer.com/science-research/climate-weather/arctic-oscillation
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.