SPC AC 100041 Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0741 PM CDT Sun Aug 09 2026 Valid 100100Z - 101200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF THE MIDWEST... ...SUMMARY... Severe storms are possible this evening into the overnight hours across portions of the Midwest. Additional strong to severe storms may occur from western Nebraska into the Dakotas, and across Arizona. Low-level moisture will increase during the evening and overnight hours, but currently, instability remains weak and capping is strong. ..Leitman.. 08/10/2026 CLICK TO GET WUUS01 PTSDY1 PRODUCT NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z