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Short Range Public Discussion
(Latest Discussion - Issued 0708Z Sep 30, 2014)
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 307 AM EDT Tue Sep 30 2014 Valid 12Z Tue Sep 30 2014 - 12Z Thu Oct 2 2014 ***Strong low pressure system over the Great Plains*** ***Showers and some mountain snow for the Rocky Mountains*** ***Trough over the East Coast along with some showers*** The main weather maker across the continental U.S. will be a strengthening surface low that will track across the Dakotas and into Manitoba, Canada by Wednesday night. This will also be associated with an upper level low that is lifting northward from the central Rockies. At the surface, a slow moving cold front is progged to extend southward from this low with another wave of low pressure forming along it over the central Plains. In terms of sensible weather, there will likely be multiple rounds of showers and thunderstorms extending from Texas to the Upper Midwest. Locally heavy rainfall will also be possible ahead of the cold front where moisture convergence is maximized. A few severe storms are possible with the surge of warm and humid air in the warm sector of this system. Elsewhere across the country, showers from time to time can be expected from the Mid-Atlantic to the Northeast as a weak upper level low combines with moisture advecting westward from the Atlantic Ocean. Scattered showers and storms are in the forecast for the central Gulf Coast and Florida. Out west over the northern Rockies, some high elevation snow showers are likely above 8000 feet with lingering moisture and cold air from the departing upper level low over the Dakotas. Hamrick Graphics available at