Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
814 ACUS02 KWNS 090601 SWODY2 SPC AC 090600 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 0100 AM CDT Sat May 09 2026 Valid 101200Z - 111200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF WEST-CENTRAL AND NORTH-CENTRAL TEXAS... ...SUMMARY... Thunderstorms capable of producing large hail and damaging wind gust appear likely Sunday afternoon and evening from parts of west and central Texas east-northeastward into the Ark-La-Tex and lower Mississippi Valley. Hailstones greater than 2 inches in diameter and severe wind gusts above 70 mph will be possible across parts of west-central, central and north Texas. ...Southern Plains/Ark-La-Tex/Lower Mississippi Valley... A positively-tilted mid-level shortwave trough will move southeastward into the southern Plains on Sunday. At the surface, a cold front will advance southward across an area from west and north Texas into the Ark-La-Tex. To the south of the front, surface dewpoints will be mostly in the 65 to 70 F range, which will contribute to moderate destabilization by afternoon. Surface-based convective initiation is expected around midday, as surface warming takes place and low-level convergence increases near the front. Scattered to numerous thunderstorms appear likely to develop, with a large complex of storms moving southeastward across north and central Texas during the afternoon. South of the front over much of the southern Plains, model forecasts increase MLCAPE into the 2000 to 3000 J/kg range by afternoon. Also, 850-500 mb lapse rates are forecast to be between 7.5 and 8 C/km ahead of the front. This, combined with 0-6 km shear in the 35 to 40 knot range, will be favorable for semi-discrete supercells with large hail. Hailstones greater than 2 inches in diameter will be possible in areas that destabilize the most, particularly across parts of west-central and north-central Texas. In addition, 0-3 km lapse rates are forecast to become very steep, exceeding 9 C/km in some areas. As cells increase in coverage and merge during the mid to late afternoon, MCS development will be possible. The very steep low-level lapse rates will support a wind-damage threat. If a cold pool can organize, then the wind-damage threat would likely increase during the late afternoon, and wind gusts above 70 mph would be possible. Further east-northeast into the Ark-La-Tex and lower Mississippi Valley, convective coverage is expected to be a bit more widely spaced. The environment will be characterized by moderate deep-layer shear and sufficient instability for a severe threat. Damaging wind gusts and isolated large hail will be the primary threats. ...Southeast... A very moist airmass will be in place on Sunday from the central Gulf Coast states eastward to the Atlantic. Surface dewpoints will be in the upper 60s and lower 70s F, with moderate instability developing by afternoon. Although large-scale ascent will be limited, convergence boundaries appear likely to develop inland from the coastal areas during the afternoon. Storms that can form along these favored zones may have potential for isolated severe wind gusts, mainly due to precipitation loading. ..Broyles.. 05/09/2026 $$