Psycho weather (qu'est-ce que c'est)

I woke up this morning to what could generally be described as a dusting of snow--nothing on the street, a thin layer on the sidewalks...nothing to write home about. Then it all of a sudden turned to near-blizzard conditions. In the time it took to shower and eat a quick breakfast, close to an inch of snow must have fallen, completely coating the streets. And yet, by the time I got outside the sky was blue. Then at work the heavy snow came again, then more sun. This is all in the space of an hour or less. Now it's brilliantly sunny (albeit with dark clouds on the horizon) and looks terribly windy, with big plumes of snow blowing off all the rooftops. Bizarro.