Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
663 ACUS02 KWNS 231728 SWODY2 SPC AC 231727 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1127 AM CST Sun Nov 23 2025 Valid 241200Z - 251200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN EAST TX TO THE ARK-LA-MISS... ...SUMMARY... Scattered severe thunderstorms are possible from Monday mid-afternoon into Monday night across east Texas into the Ark-La-Miss. A few tornadoes along with large hail and damaging winds are anticipated. ...Synopsis... Multiple shortwave impulses embedded within a positive-tilt trough over the central to southern High Plains will move east-northeast towards the Lower OH and TN Valleys through early Tuesday. These impulses will dampen Monday night downstream of a shortwave trough digging from the Pacific Northwest into the northern Great Plains. Weak surface cyclone near the KS/OK border may decay as it tracks into the Ozarks. A warm front will advance north from south-central TX and the central Gulf Coast. ...Central TX to MS... Primary change this outlook has been to shift/expand severe probabilities east/south based on latest guidance trends. Confidence remains too low for highlighting a mesoscale corridor of strong tornado potential with a level 3-ENH risk. Elevated storms will be ongoing at 12Z Monday from parts of central TX to western AR. Marginally severe hail is possible with these storms through midday. Downstream of these storms, the surface warm front will accelerate northward across east TX. Amid rich boundary-layer moisture south of the front, a plume of moderate buoyancy will become pervasive from south into most of east TX. Primary severe potential should commence around mid-afternoon amid weak mid-level height falls and minimal inhibition. Activity should intensify/increase along the outflow from early-day convection and in confluence bands immediately downstream. Strong southwesterly deep-layer shear will support supercell structures, but convective mode will likely remain quite messy along the progressive outflow that nearly parallels the shear vector. The more semi-discrete cells just ahead and trailing southward will have the best potential to produce large hail. The tornado threat will be influenced by the degree of discrete convection that forms eastward in the warm sector through early evening where low-level hodograph curvature remains large. Nocturnal tornado and some wind threat will persist into the late evening/overnight period as rich low-level moisture is maintained across the Sabine Valley and expands east through MS. ..Grams.. 11/23/2025 $$