Looking at a blend of GFS, Euro, NAM, CMC, Euro AI, ICON you get temps like 26-31 for DC metro area. That is a great sign IMO. We do best when we're not waiting for dynamic cooling. I like a good entrenched cold air mass.
Decent model agreement of a low amplitude shortwave moving
across the southern Mid-Atlantic Friday as high pressure
retreats offshore. Uncertainties arise in how far north the
precipitation will make it. Almost all ensemble and
deterministic guidance has enough cold air in place to favor all
snow in our FA should moisture make it this far north. There are
a few outliers that have rain across the far S of the FA. FWIW,
snow and ice has trended up slightly over the past couple of
runs. While amounts are forecast to generally be light (an inch
or two, perhaps three should a higher end solution verify), the
northward shift is notable. Looking at clusters featuring the
greatest variance (EOF) regarding amplitude does suggest
additional northward expansion is possible. Just something to
keep in mind.
Always we need to wait til we have very established cold to have a chance. With a warmer base state due to climate change I feel like hedging towards warm sloppy mess for the metros makes sense, especially early season.
Is tonight's supposed to be a little stronger? I might try to head over to Rock Creek Park where at least it's not sooooo bright. Perhaps on the golf course I could find a spot with a view of the northern sky.
The blue sky snow is a weird phenomenon! I see it on the drive to and from Canaan valley during upslope as well. Usually around like 1/2 way to the hill to the ridge.