Sunday, June 28th 2009 Weather Outlook

Sunday’s Weather Outlook; Great Lakes/Northeast/Ohio valley/Southeast/Mississippi Valley/Southern Plains System

11:36PM

On Sunday, a system will push slowly eastward into the Great Lakes. Showers and storms will be likely across portions of the Great Lakes, Northeast, Ohio Valley, Southeast, Mississippi Valley and Southern Plains, associated with this system. There is a slight risk for severe storms in portions of Arkansas, Mississippi, Alabama, Georiga, South Carolina, North Carolina, Virginia, Tennesse, Kentucky and West Virginia. CAPE values will be around 4500 J/KG, LI’s of -8 and Effective Bulk Shear values of 20-50KT. This along with a system in the area, will help storms become severe. Severe storms will develop in the Afternoon along a cold front, from Kentucky down into Arkansas. Storms will push eastward through the day and into the Evening, before weakening as diurnal cooling sets in. The main threats fromt he severe storms will be damaging winds, hail and an isolated tornado. Further west along the tail end of the cold front in Texas, Oklahoma, Louisiana, Kansas, New Mexico, Colorado and Nebraska some severe storms will be possible. CAPE values will be around 2500 J/KG, LI’s of -5 and Effective Bulk Shear values of up to 45Kt. Less instibility and a more limited severe threat will preclude a slight risk from being issued. The main threat from any storms that do become severe will be damaging winds, hail and an isolated tornado. Below is the severe weather outlook for Sunday.