Day 4-8 Outlook
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0346 AM CST Thu Dec 25 2025 Valid 281200Z - 021200Z ...DISCUSSION... A mid-level trough is forecast to move eastward across the central U.S. on Sunday, as an associated cold front advances southeastward into the Ozarks and mid Mississippi Valley. Near the front, scattered thunderstorms are expected by afternoon from the Ark-La-Tex northeastward into the lower Ohio Valley. Any severe threat will likely remain marginal due to weak instability, and a tendency for storms to be post-frontal. From Monday to Thursday, the mid-level trough is forecast to gradually move eastward across the central and eastern U.S., eventually reaching the western Atlantic by Thursday. In its wake, a cool and dry airmass is forecast to overspread much of the continental U.S., making conditions unfavorable for thunderstorms in most areas.
