One of the presents I received for Christmas this year is a small can with a pull top on it. Inside is, apparently, 20 grams of “stuff” that poofs up into about 1.5 litres of artificial snow when you add a small amount of water. (I say apparently because I haven’t opened it, yet.)
Looking at the Franktown radar, it appears that parts of the Ottawa Valley may have popped the top on a giant version of a can of this stuff:
Poor Bancroft appears to be sitting on the boundary between freezing rain and snow.