I don’t have any of the surface temperature maps from those runs unfortunately but I do remember it was the coldest surface temp outputs I’ve ever seen on the Euro. Pretty sure it showed negative temps in Western. WA within 7 days of the event starting. Here’s another gorgeous 500mb map.

Hey this one (-NPO/-WPO) is statistically more likely to deliver arctic cold than a pure -PNA like Jan 1950 (which has never been repeated).

Pretty much 1893 then. Wow!

Massive GEFS improvements within 300 hours. Run to run change: Result so far:

Nice GEFS. Looking good right now!