Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0329 AM CST Wed Feb 11 2026 Valid 141200Z - 191200Z ...DISCUSSION... ...Days 4-5/Sat-Sun -- Texas to the Southeast... An upper trough will move from the southern High Plains early Day 4/Saturday, eastward across the Deep South/Southeast states through Day 5/Sunday. An associated belt of enhanced southwesterly flow ahead of the trough will overspread increasing boundary layer moisture within a low-level warm advection regime. Meanwhile, a surface low near the OK/TX Red River Valley early Saturday will deepen as it shifts east to the TN valley by Sunday morning, before moving offshore the NC/Mid-Atlantic coast Sunday night. Widespread showers and scattered thunderstorms are expected to develop within the warm advection regime ahead of an eastward-advancing cold front, first across eastern TX to the Lower MS Valley on Saturday/Saturday night, and continuing across portions of the Deep South and Southeast on Sunday. Severe potential remains uncertain, though at least some low-end severe hazards appear possible given at least some weak destabilization across the moderate to strongly sheared warm sector. However, the northern extent of any higher-quality Gulf moisture is unclear given longitudinal spread among guidance with the placement of the surface low. Furthermore, given the neutral to positive-tilt trough and deep-layer flow parallel to the surface boundary, training precipitation could further limit destabilization. These uncertainties preclude 15 percent severe delineation at this time. ...Days 6-8/Mon-Wed... Upper ridging is forecast to move from the Plains to the eastern U.S. on Day 6/Monday in the wake of the departing upper trough from the weekend. Model spread increases considerably by the end of the period, though various guidance hints at a continued progressive upper pattern, with some potential for another trough developing over the West early next week. Overall, predictability is low beyond Monday.Read more
