Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
725 ACUS02 KWNS 241722 SWODY2 SPC AC 241721 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1121 AM CST Mon Nov 24 2025 Valid 251200Z - 261200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN PARTS OF AL AND EASTERN MS... ...SUMMARY... Isolated severe storms are likely across parts of the Southeast/Deep South, mainly from Tuesday morning into early evening. A couple tornadoes are possible in parts of eastern Mississippi and Alabama. ...Synopsis... A leading shortwave impulse over the Lower OH and TN Valleys will dampen as it moves quickly northeast, downstream of an amplifying shortwave trough across the Upper Midwest. Surface cyclogenesis will occur over the Upper MS Valley into the Great Lakes, aiding in sharpening/acceleration of a trailing cold front on Tuesday night in the Southeast. ...Deep South... A high shear-low CAPE environment should be present across southern/central MS into western AL, where remnants of early-morning supercells may yield a lingering tornado threat beyond 12Z. Convection should generally weaken into midday, in the wake of the leading shortwave impulse departing the TN Valley. Diurnal destabilization should occur following early-day convection, ahead of the initially slow-moving cold front. With upper 60s surface dew points nosing north from the central Gulf Coast, even modest diabatic heating will sustain moderate buoyancy. Guidance is consistent with suggesting scattered convection along/ahead of the outflow-modulated cold front during the afternoon, despite otherwise nebulous large-scale ascent. Deep-layer wind fields are expected to be subsiding from strong values early, but likely remaining adequate for semi-discrete supercell structures. Modest mid-level lapse rates and expected mode may curtail greater than isolated severe hail/damaging wind threats. Tornado potential will be dependent on timing of afternoon convective development and the degree of low-level hodograph curvature reduction. But there is sufficient signal to warrant a corridor of level 2-SLGT for the risk of a couple tornadoes from lingering storms in the mid-morning and afternoon to early evening redevelopment. Overall severe threat should become marginal by late evening/overnight, but may persist on a very isolated basis east/southward in GA to the FL Panhandle. ..Grams.. 11/24/2025 $$