2:20 PM Wednesday December 13
Road crews are out preparing to drop brine ahead of light snow this evening. My prior update was all set to hold the clipper track along the Pennsylvania and Maryland line, thus keeping the snow north of I-70. A slight deviation is all that was needed to help push more snow over the mountains and into central Maryland this evening. With that said, we are still only talking about a coating of snow for most. Slightly more north. But the timing this evening between 7 and 10 PM… after a cold day could briefly cause some travel issues.
One of my clients is McDonogh School and I just had a chat with them about their evening activities. Their busses travel between northern Carroll Co and Annapolis. I will be running my son’s basketball practice for a bunch of 5th and 6th graders. That is between 5:30 and 7:15 PM… So I know the potential impact concerns personally.
Upper Level Energy Helping
The surface Low in the image above is on track to move across the PA/MD line. But the upper level energy looks like it may push a little farher south. That is why the chance to move snow over the mountains into central Maryland is back on… for a few hours.
Water Vapor Animation
—> slider: Simulated Radar:
There could be an hour or two with a slight issue… that is why I am posting this update for you to plan around. The brief warm pavement today and light snow in the evening may lead to an initial melt/freeze. Otherwise, just a lit coating and a few hours. If you travel the Pennsylvania Turnpike, then the snow will linger longer and last into the morning.
Notice the green near Annapolis at 9 PM. Temps by the by will be marginal with freezing. This could be a “bridges are colder and freeze first” issue.
Snow Total – Not Much
All it takes is a slick hour or two to be a problem, but not much to speak of in general The normally colder areas are best suited to get a half to full 1 inch of snow.
This will be done early in the morning and should not be an impact for the Thursday morning commute unless there are untreated roads.
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