The first "silly season" chart of the year - member 20 of this morning's GEFS. Oh, if only this could come off!
(That's -19.2C at 850 over eastern Kent, 498dam 1000-500 thickness, -5C surface temperature!)
Obviously it's most unlikely to happen, but it does show that it's never, ever safe to write off a whole month in the first couple of weeks.
EDIT: And just to balance things, here's the mildest chart (at 850) from all the ensembles this morning:
Originally Posted by: Retron