The National Weather Service Storm Prediction Center’s Day 1 outlooks for September 15, 2026, placed only a marginal (Level 1/5) risk of severe thunderstorms across portions of the southern and central Plains into the Midwest, driven by a surface cold front, moderate CAPE, and steep low-level lapse rates favoring isolated damaging winds and small hail. Probabilistic tornado graphics explicitly showed no risk areas, reflecting weak deep-layer shear and limited organization potential despite scattered convection. Cities such as Kansas City, Wichita, Indianapolis, and Chicago fell within the broader marginal wind and hail contours, but official guidance assigned negligible tornado probability. Updated model runs and observational data through the evening reinforced this assessment, with any activity remaining disorganized multicell clusters rather than supercells.