A minor upper level weather disturbance drops through the Mid-Atlantic region tonight and tomorrow morning, offering the opportunity for a few rain and snow showers. Little or no snow accumulation is expected.
This is a classic clipper-type disturbance with very limited moisture as it’s riding along the jet stream from the northwest.
The best chance for rain and snow shower activity – as simulated by weather models – is generally east of I-95 – as a very weak wave of low pressure tries to spin up near the coast, tapping a bit of Atlantic moisture.
Here’s how I see this “event” unfolding:
* After 8 p.m., hit-or-miss showers enter the region from the west (30 percent chance of precipitation). They may briefly begin as rain with temperatures around 40, but with plentiful cold air at high altitudes – change over to snow with temperatures falling back into the 30s.
* Between 11 p.m. and 5 a.m., scattered snow showers are possible throughout the region, with the highest chances (around 40 percent) east of I-95 and lowest chances towards in western areas (20 percent).
* Between 5 a.m. and 10 a.m., there’s a 20 percent chance of a few lingering flurries west of I-95, with snow showers ending east of I-95 (30 percent chance).
* Snow accumulation odds: 20 percent chance of a coating or so west of I-95, 40 percent chance of a coating to 1 inch east of I-95. Little or no snow accumulation is the most likely outcome everywhere. Temperatures near and slightly above freezing limit any minor accumulations to car tops and grassy areas for the most part.
* All in all, expect this to be a low to no impact event in the region. Flakes should mainly be “conversational” in nature.