Strong Storms possible to end August

Severe thunderstorms, associated with severe wind gusts and hail, will be possible today from parts of the central Appalachians into the Ohio and Tennessee Valleys. An upper-level trough will move through the Great Lakes region, with the southern end of the trough located in the mid-Mississippi Valley.

An associated cold front will advance southeastward through the mid-Mississippi Valley and southern Great Lakes. Ahead of the front, a moist airmass will be in place with surface dewpoints in the upper 60s and lower 70s F. Moderate instability is expected to develop by midday ahead of much of the front. Further to the east, a pre-frontal trough will be located from western New York and western Pennsylvania southwestward into eastern Kentucky. Scattered thunderstorms will form from near the front eastward to near the pre-frontal trough. 

By early to mid-afternoon, conditions will support severe wind gusts with the more organized bowing line segments. Hail will also be possible.