DAY 1 ENHANCED SEVERE WEATHER RISK CENTERED OVER ARKANSAS AND EXTENDING FROM NORTHEAST TEXAS INTO WESTERN TENNESSEE…FORECAST SYNOPSIS…ISSUED MAY 05, 2026…11:45 A.M. EDT – Image for illustrative purposes only (Image credits: Pixabay)
Arkansas – The Storm Prediction Center issued an enhanced risk for severe thunderstorms on Tuesday, centering the primary threat over the state while extending from northeast Texas through western Tennessee. Scattered storms capable of producing large hail, damaging winds and isolated tornadoes are forecast to develop this afternoon and evening across portions of the lower Mississippi Valley and southern Appalachians. Forecasters highlighted a shift toward greater wind risks overnight as storms evolve.
Core Risk Zones Defined
The enhanced risk covers northern Louisiana, central Mississippi and central Alabama, where supercell thunderstorms pose the greatest dangers initially. A slight risk extends into the western Texas Hill Country, with broader scattered severe potential reaching eastern Texas, the lower Mississippi Valley, Tennessee Valley and parts of the southern Appalachians. This outlook, updated at 11:45 a.m. EDT on May 5, reflects analysis of evolving model data.
Probabilities underscore the threats: a 15% chance of severe hail within 25 miles of any point in hatched areas, alongside 10% tornado odds that could include stronger EF2 or greater twisters. Damaging wind gusts of 50 knots or higher carry a 15-30% probability in key zones, rising to 10% for 65-knot gusts in highlighted regions.
Hazards from Supercells to Wind Gales
Early storms in central Mississippi and Alabama may produce supercells with large to very large hail as the main concern, accompanied by a tornado risk if discrete cells persist. Low-level wind shear is expected to strengthen through the evening, heightening chances for significant tornadoes before convection clusters and emphasizes damaging winds downstream into southern Alabama and Georgia.
Analysts noted all severe hazards remain probable within the enhanced outline, prioritizing very large hail, gusty winds and an isolated strong tornado. Peak activity aligns with late afternoon through overnight hours, driven by convection-allowing models showing robust development from northern Louisiana into central Mississippi by late afternoon.
Key Threat Probabilities:
- Tornado: 5-10% (hatched for EF2+ potential)
- Hail (1+ inch): 15% (hatched for 2+ inch)
- Damaging Winds (50+ knots): 15-30%
Atmosphere Primed for Instability
Rich low-level moisture, with dewpoints in the 70s from south Texas across Louisiana into western Mississippi and southern Arkansas, fuels the setup. Daytime heating amid this influx will yield 2500 J/kg MLCAPE ahead of an approaching front, despite modest mid-level lapse rates.
Strong deep-layer shear complements the buoyancy, supporting supercell formation. Forecast indices include SBCAPE up to 4000 J/kg, SRH 0-3 km at 150-350 m2/s2, and significant tornado parameters from 0.7 to 3.9. Supercell composite values of 1-18 further signal favorable overlap of instability, helicity and shear.
Staying Ahead of the Storms
Residents in the risk areas should monitor updates from the Storm Prediction Center homepage, including mesoscale discussions and convective watches. Local National Weather Service offices provide watch/warning maps and radar loops for real-time developments.
Model guidance from NAM 3km, HRRR and others consistently shows peak indices aligning with the outlined threats, though exact storm placement may shift. Officials urge preparedness, emphasizing sturdy shelter during any tornado warnings.
