Tuesday, May 5th 2009 Weather Outlook

5 05 2009

Tuesday’s Weather Outlook; West System, Plains/Mississippi Valley/Midwest/Southeast/Mid-Atlantic System

12:00PM

On Tuesday, a system will continue to pushe astward intot he Midwest, while a system enters the Northwest. Showers and storms will be likely in portions of the Plains, Midwest, Mississippi Valley, Southeast and Mid-Atlantic, as a system moves in. There is a slight risk fro severe storms in portions of Minnesota, Wisconsin, Iowa, South Dakota, Nebraska, Oklahoma,Texas, Arkansas, Louisiana, Georiga, South Carolina and North Carolina. Along the cold front, from Minnesota down into Nebraska. CAPE values will be around 1000 J/KG, LI’s of -3 and Effective Bulk Shear values of 20-45KT. This will help some storms become severe, with the main threats being hail and damaging winds. These storms will push eastward into the Evening, before weakening. Along a stationary boundary from Texas, Oklahoma, Louisiana and Arkansas, severe storms will develop in the Afternoon. CAPE values will be around 4000 J/KG, LI’s of -10 and Effective Bulk Shear Values of 45-65KT. Storms may form into an MCS and push east-southeast into the Southern Mississippi Valley by Wednesday Morning. Further east along the stationary boundary from Mississipp into the Carolinas, severe storms will be likely. CAP values will be around 2500 J/KG, LI’s of -5 and Effective Bulk Shear values of 25-50KT. These storms will move along the front into the Evening, before weakening. In the West, a new system will move in. Showers and storms will be possible in the lower elevations and snow will be possible in the highest elevations. Below is the severe weather outlook for Tuesday.

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