Severe thunderstorms are forecasted Tuesday night across Nebraska, Iowa, and Minnesota with risks of hail and high winds impacting travel along key corridors, including I-80. Residents and drivers are advised to take precautions, particularly in areas where storm activity will be strongest in the Central Plains and Upper Mississippi Valley. These conditions may bring isolated supercells, especially in the late evening hours, which can elevate risks.
According to the National Weather Service, this severe weather pattern stems from an eastward-moving trough across the Desert Southwest, fueling southwesterly flow over the Central Plains and the Mississippi Valley. Dewpoints in the 60s Fahrenheit will contribute to storm intensity along a narrow corridor reaching from Nebraska northeastward, as a cold front shifts southward and strengthens. By late Tuesday, an estimated 0-6 km shear will peak at 60-70 knots, with instability, or MLCAPE, reaching 500-750 J/Kg, allowing storms to become severe.
The primary risk in these thunderstorms is hail, with certain supercells potentially reaching severe thresholds. Residents along the I-80 corridor and surrounding areas should stay updated through local advisories and prepare for storm impacts. Additionally, travelers on Tuesday evening should consider adjusting plans to avoid peak storm periods and areas prone to severe weather.
The forecast for the week following Tuesday indicates a slight cooldown after the front passes, bringing clearer conditions by Thursday. Rain chances decrease as temperatures stabilize in the mid-60s Fahrenheit. However, with severe weather possible, residents are encouraged to follow updates for any shifts in this forecast.
