The very active pattern continues, and the second wave that I mentioned yesterday is developing very well this morning (Friday, 9AM) to our south and will likely bring a swath of moderate to heavy precipitation across the area beginning at about 6PM this evening and lasting into early Saturday morning. For most of us along the 95 corridor, this will be a cold rain event, but for areas west of I 270 and north along the MD/PA line, this could be a short-lived heavy snow event. Be careful if traveling in those areas overnight. Where the rain/snow line sets up is still uncertain at this point, and if there are changes in the midday model runs, I’ll update this afternoon.
Regardless of what happens locally for tonight’s storm, it’s development has ramifications for us Sunday afternoon into Monday. If you want snow, you want tonight’s storm to deepen rapidly and force cold air over us in its wake. Right now the Sunday afternoon and evening system is too close to call, but it has been trending slightly colder with each model run, so there is still potential for an accumulating snow event, especially to the west and north of I 95 Sunday evening into Monday. I’ll update on its potential over the weekend.
The Weather Mill 