MCV-Fueled Storms Eye 70 MPH Gusts in Missouri-Arkansas-Kentucky — SevereWX

Storms tied to a mesoscale convective vortex (MCV) near Springfield, Missouri, are ramping up, setting the stage for organized damaging winds across a broad area.

The Storm Prediction Center's Mesoscale Discussion 1346 highlights increasing threats from late morning through early afternoon. Radar and satellite data show cooling cloud tops and rising lightning activity in ongoing thunderstorms from south-central Missouri into north-central Arkansas. As these storms push east, they'll tap into a juicy air mass with dewpoints in the mid-70s to low-80s°F, fueling moderate instability (MLCAPE 1500-2000 J/kg).

Enhanced mid-level winds of 45-55 knots in the 4-6 km layer, sampled by regional radars, point to a more structured wind damage risk. SPC pegs the most probable peak gusts at 55-70 mph, with a 40% chance of a Severe Thunderstorm Watch.

Impacts span southeast Missouri, northeast Arkansas, far southern Illinois, western Kentucky, and northwest Tennessee—think areas from Cape Girardeau and Paducah to Jackson, Tennessee. Filtered sunshine is eroding any remaining cap, allowing convection to thrive.

Monitor radar closely as trends evolve rapidly. Have a severe weather plan ready: identify your safe spot, keep devices charged, and heed local warnings.

Stay prepared—know your risk.