If you look down in previous blog posts, there's an entry on where to find current conditions, which is also a great way to follow the arctic air. But here are some links to specific cities along the Fraser Valley to watch the arctic air drop down and temperatures plunge :) First, orient yourself with a map of British Columbia:
Also, for weather geeks, watch the pressure gradients -- i.e., the difference in pressure in milibars between Bellingham (BLI) and Williams Lake (YWL) -- it's the table on the upper right and most recent is on top. Anytime that gets into the -15 to -20 range, that means there's a very strong difference in pressure between those two cities, with the pressure some 15 to 20 milibars higher in Williams Lake than Bellingham, and a strong northeast wind follows. That's generated because cold air is very dense and thus is associated with very high atmospheric pressure.