From the ABC 7 Weather team

D.C. Weather Forecast: Major storm impact later this weekend?

October 24, 2012 - 03:45 PM
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Conditions continue to be gorgeous but is this the calm before the storm?

Tonight: Partly Cloudy, Patchy Fog

Lows: 50s to Near 60 | Wind: SE 3-5 m.p.h.

Thursday: Partly Sunny, Not as Warm

Highs: Mid 70s | Wind: SE 3-6 m.p.h.

Friday: Mostly Cloudy and Cooler

Highs: Upper 60s | Wind: E 4-8 m.p.h.

A gradual shift to easterly and southeasterly winds will draw in slightly cooler temperatures tonight along with periods of cloudiness and the chance of a little fog. Otherwise, high pressure will be controlling the weather until a dynamic cold front approaches our area during the day on Saturday. So until then, partly to mostly cloudy skies and more seasonable temperatures. There will be a slight chance for showers on Friday and a slightly better chance for showers on Saturday when the cold front gets closer. The front may deepen on Sunday and Monday. At the same time, we will be watching the evolution of Hurricane Sandy. It is currently near Jamaica and is expected to travel in a general north to northeast direction for the next several days.

Here’s the forecast problem for us…computer models are making a reasonable case that Sandy will interact with that dynamic cold front and could bring heavy rain and high winds to part of the U.S. East Coast. Some models even suggest direct and serious effects from this hybrid tandem could affect the mid-Atlantic….even having a profound effect on our weather locally. This would be in the later Sunday into Monday time-frame. The National Weather Service will be launching extra radiosonde balloons over the next several days to monitor upper air patterns that might help us figure what is going to happen. There is a chance this whole thing will just move out to sea…sparing the east coast. BUT there is a chance it will not.

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