Bernd 02/12/2018 (Mon) 23:26:07 No.13646 del
(3.22 MB 768x768 tempresult_xed2.gif)
Jet stream breakdown.

There was a warning for sudden stratospheric warming earlier but I think I didn't post it bc I realised I don't really understand the mechanism; it's something about warm air being pumped through stratosphere into the polar vortex where it descends and warms up, causing reversal in wind direction in the stratosphere