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Thursday, January 24, 2008

Snow Showers- More - Eastern Shore!

Just a shift east, and the beaches may win this round of snow. At the bottom of this post you can see the Snow Advisory Map. The models have pulled back on any accumulated precipitation- but that doesn't mean we are done. This reminds me of what we had back on Jan. 14th- a snow burst. In fact you can see that blog on the right- look for the label (vort max). It could look impressive in spots and coat the ground with less than 1 inch. It all depends on timing and true position of the vort max. Forget the cold front from the west, and the small coastal to our south- here is the NAM 500mb ( roughly 18,000 feet) map. This shows the spin or energy in the atmosphere that can enhance shower. First, a spin at this level will create rising air from the ground and help clouds develop. The timing of late afternoon or early evening acts on any late day heating to enhance it as well. So if you are watching the radar- it might not look impressive most of the day. This feature will enhance the coastal system, but that will be pushed offshore.
Basically- all of us have about the same chance of snow showers- yet the Delmarva may be in the position to have that last longer into the evening, at it will be closer to the of shore Low Pressure. With the chance of 1-2 inches there, this Snow Advisory has been issued for Queen Annes, Talbot, and Caroline Counties. At 12:30pm Kent and Wicomico were added. Watching the current radar- I would suggest a 2-3 inch range for those counties..

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