Winter Storm Possible Sat night/Sunday--Very Windy today

The modeling is indicating cold air damning(CAD) occurring this weekend as a moisture from a storm to our west creeps up near us. CAD is basically is when cold air is funneled down against the east side of the Appalachians from our Arctic High Pressure usually located in Eastern Canada. Once that cold air gets wedged, its slow to move out. Usually, when a storm goes to our west, any high pressure that is over Eastern Canada slides out to sea and we warm rapidly. But in this case, the High pressure is being blocked by another system out near NewFoundland and cant slide out to sea. So what does all this jargon mean?

It means a Winter Storm may affect us Starting Saturday night and into Sunday. The precip could start as snow and then change to sleet and freezing rain before ending as rain. The upper levels look a bit colder than they did for the historical Valentines Day Ice storm so we could see a bit more snow. Its still 72 hours out so I will have to update this again tomorrow. It looks like N and W of DC will see a mostly frozen event while DC proper starts frozen and ends wet. The model is showing a good amount of moisture. Its still possible that this could be just a cold rain but I am leaning more toward a frozen event for now. This storm should also affect The Northeast including Boston. Stay tuned.

Also for today, a clipper will head to our north but the cold front will bring very windy conditions this afternoon and rapidly falling temps. It will feel like winter again when you go to your car for Pm rush hour.