Monday, March 17, 2008

Eastern US Weather Discussion

High pressure is in control up and down the east coast at the moment with no significant weather to speak of over the next day or so. But the East will not be spared from the flooding and severe threat the upcoming storm poses. There also will be a wintry side to the storm over northern New England. After a chilly start tomorrow morning in New England most of the day tomorrow will be fairly nice in the east. Temps will go up to near or slightly above normal out ahead of the storm system that will be affecting the region this week. High pressure will slide east off the coast tomorrow, and rain will break out across PA, NY, and the upper Mid Atlantic tomorrow afternoon out ahead of a warm front. The southeast US and New England will remain dry tomorrow during the day as high pressure will still be keeping these areas dry. Tomorrow night the rain will continue spreading NE into New England but amounts should be under 1" so no major flooding yet although areas in PA where snow melt and moderate rain amounts there could be some nuisance flooding breaking out. The precip over northern New England may fall in the form of snow, but nothing too heavy yet. The SE US will remain mainly dry tomorrow night with just some isolated thunderstorms possible in the warm air mass. Wednesday the severe weather, flooding rain, and chance for a winter storm will materialize across the eastern portion of the country. The cold front will start crashing into the SE and areas like Alabama, Georgia, the Carolinas, and up into the Virginias/DC region there will be a severe weather threat. Right now I do not for see a huge tornado outbreak but there will definetly be a squall line coming through with a chance of isolated super cells out ahead of it. Areas in the Mid Atlantic will continue seeing periods of moderate rain and river levels will start to rise some. Wednesday night the cold front will continue east and a lot of the east will continue to dry out. I do not see much more than nuisance flooding except for in PA where heavier rain will fall and over southern New England where snow melt will compound any flooding problems. As colder air slips in and the storm really wraps up northern Maine, Vermont, and New Hampshire will see a major snow storm and 7-14" of snow may fall along with gusty winds. A snow map for this will definetly be issued tomorrow. The east is also watching for a potential snow storm next Monday/Tuesday, but the models are currently keeping the storm will south of the Mid-Atlantic and New England and only shows light rain over the south, but as I have said before this could very well change.'

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