Yeah, Finn, it does. I don't think the mechanism behind it is QUITE the same as your blanket, but it does. Last year Juneau had a brown Christmas while ours was white, and when I checked Alaskan weather a couple weeks ago, people were bitching because it was too warm. Sheesh.
Normally the Jet Stream winds circle the Arctic Circle fairly smoothly, which keeps the Arctic winds sort of bottled up, but every so often it develops kinks, which let cold winds blow south and pulls warmer southern winds farther north. That's what's happened last year and this.
Some climatologists suspect a link to global warming, since the waters of the Bering Sea and the Arctic Ocean are getting warmer, .like the rest of the oceans, and that pushes the jet stream south.
http://summitcountyvoice.com/2010/10/24/warming-arctic-pushing-jet-stream-farther-south/