I like these graphs but am ashamed to say I don't understand them other than what Q points out (ie the warm core). Anyone recommend a link/ site that explains the two variables that define the graph?
Docs on interpretating cyclone phase space maps here:
http://moe.met.fsu.edu/cyclonephase/help.html
The upshot is, we want a warm symmetrical warm cored system; there are only two classes of storm that have these properties. 1) Tropical cyclones (including medicanes), 2) Warm secluded systems and subtropical systems.
Subsequent phase diagrams can eliminate 2), however this isn't as easy with medicanes as they have many similarities with subtropical systems too. To be honest I think medicanes really are unique. I always call them 'tropical like' rather than tropical because I personally believe they deserve a class of their own, not tropical, subtropical or extratropical.
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.