Sunday storm: Not a good snow setup
Next Chance of Accumulating Snow: Sunday morning
Probability of Accumulating Snow (1" or more): 35%
Most Likely Potential Impact:
A storm on course to affect the D.C. area on Sunday leaves a lot to be desired for snow fans. The storm itself looks pretty weak, its counterclockwise circulation likely not strong enough to pull cold air down from the north as it tracks up from our south.
Meanwhile, there will be no high pressure parked to the north to pump cold air southward, or even keep in the semi-cold air that will be in place Saturday night. Instead, high pressure will be positioned offshore to our east. The clockwise circulation around the high will only serve to push warmer marine air into the area.
The end result? A possible period of snow or a mix, especially from around D.C. and northward, as the precipitation begins, which will probably be within a couple hours of sunrise Sunday morning. Those that see snow or a mix are likely to see precipitation change to all rain (generally from south to north) by mid-to-late morning or early afternoon as highs reach the upper 30s to low 40s, if not a bit higher.
If anything, the odds of getting an inch of snow may be slightly down from yesterday, but for now we'll keep the probabilities the same, as things can sometimes trend colder as wet get closer to the event...
No snow: 35%
Dusting to coating (mainly on grass): 30%
The Snow Lover's Crystal Ball appears when the potential exists for accumulating snow beyond 24 to 36 hours.
| December 11, 2009; 11:00 AM ET
Categories: Snow Lover's Crystal Ball
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