Like I said on my popular tv show, the Pacific 'Heart of Chaos' is sending weak streams to Vancouver, to see if they can stop mentioning the previous drought.
This is a new thing that I haven't seen before. The plume is too weak to get over the mountains, so the prairies have had a stealth cold air mass move in.
The result is this amazing straight line of cold attacking warmth. It's going to be warmer in Toronto, than San Fran. This cold will push the warmth over to Europe, to make them happy.
ps. this line of storms is magnificent. Remember from my school that this has nothing to do with a degree of warmth, but the difference in temperature between the two air masses.