Cold Air Again Sets Foundation


 

Over the past few days, weak, moisture starved low pressure systems, known as Alberta Clippers, delivered us light snow and flurries. Today, the third in a series of Clippers comes by. It has very little moisture to work with, so clouds and just a few flurries are all we should expect. Behind it, colder air rushes in for tonight and Monday. Lows will fall back into the lower teens with lower-mid 20s for highs on Monday afternoon. High pressure means Monday starts sunny, but clouds increase late as warmer, moist air advances. This warm, moist air will be forced over the dome of cold air at the surface. As the air is lifted, clouds and precipitation will form. Initially, it will be in the form of snow for Monday night into Tuesday. But by later Tuesday into Wednesday, warmer air will change the snow over to a messy mix. Once again, arctic air is setting us up for wintry weather.