"Wx Geek Alert"...taking a look at last night's 00z EPS, look way up north towards the N Pole and you can see the Vortex send a lobe down the western shores of Canada, down into the Upper MW/GL's by Day 7-10 where it stalls out. Golly, that blocking is doing some weird stuff this Spring. As the jet stream this week pretty much comes to a crawl, some interesting model runs are showing up for later in the week/weekend.
Late season Spring snows are showing up for the North land...