A low clipper

 Not much on the weather front, yet.  That horizontal clipper from a plume hitting Vancouver directly, has blown away a cold air incursion.

Now, we get the upper half of it.  There may be a new clipper setting up, if that plume hits the Yukon.  The Canadian air is so cold and clear, that we can't really see anything.

ps.  here's where it's good to be invisible.  Absolutely nothing going on.

pps.  a bit more physics, and we should be able to predict how plumes will land.