Northern Missouri Supercells Prime for Strong Tornadoes, Giant Hail — SevereWX

Northern Missouri Supercells Prime for Strong Tornadoes, Giant Hail

A volatile setup is taking shape across portions of northern and central Missouri into western Illinois this afternoon. The Storm Prediction Center's Mesoscale Discussion 1165 flags a 95% chance of a watch as thunderstorms redevelopment along an outflow boundary sharpened by morning storms.

Strong daytime heating is pushing temperatures into the mid-80s°F under clearing skies south of the boundary, eroding low-level stability. Paired with 50-55 kt deep-layer shear and STP values of 2-3, this primed environment favors initial supercells. A strengthening low-level jet will nose northward, potentially boosting tornado odds into western Illinois.

All severe hazards loom large: expect 2-3.5 inch hail, 65-80 mph wind gusts, and tornadoes up to 140-170 mph—capable of EF3+ damage. Peak threats unfold between 1 PM and 4 PM CDT (1718-2000Z).

This ties into broader Missouri instability, but northern/central zones and nearby Illinois stand out for supercell dominance. Keep eyes on SPC for watch issuance.

Stay prepared: Monitor radar closely, secure outdoors, know your safe spot, and have multiple alert sources ready. Severe weather can escalate fast—don't wait for warnings.