000 ACUS01 KWNS 260526 SWODY1 SPC AC 260525 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1225 AM CDT Thu Apr 26 2018 Valid 261200Z - 271200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE SOUTHEAST... ...SUMMARY... Isolated severe thunderstorms with hail and strong wind gusts are expected across parts of the Southeast on Thursday afternoon and evening. ...Eastern Alabama/Georgia/South Carolina/Central North Carolina... An upper-level trough will move across the Southeast today as a 55 to 65 kt mid-level jet moves through the base of the trough. At the surface, a low will move from the central Gulf Coast States into Georgia as a cold front advances eastward across the region. A corridor of weak low-level moisture with surface dewpoints mostly in the lower to mid 50s F will be in place ahead of the front by afternoon. Surface heating and increasing low-level convergence near the surface low should result in convective initiation across central and northern Alabama around midday. Convective coverage is expected to increase with thunderstorms moving across central and northern Georgia and into South Carolina this afternoon. Storms should eventually reach central North Carolina this evening. RAP forecast soundings at 00Z from Atlanta, GA to Columbia, SC show surface dewpoints in the mid 50s F, MLCAPE around 500 J/kg and 0-6 km shear of 35 to 45 kt. This may be enough for a few marginally severe multicells. The primary threats should be for hail and strong wind gusts. ..Broyles/Gleason.. 04/26/2018 $$