Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
657 ACUS03 KWNS 060712 SWODY3 SPC AC 060711 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0211 AM CDT Thu Aug 06 2026 Valid 081200Z - 091200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM NEBRASKA INTO PARTS OF IOWA AND NORTHERN MISSOURI... ...SUMMARY... A corridor of damaging winds may develop Saturday afternoon and evening from Nebraska into Iowa/Northern Missouri. ...Mid to Lower MO Valley... Moderate northwest flow aloft will persist across the northern Plains into the Great Lakes on Saturday, as the main upper wave rotates northeast from Ontario into Quebec. The southern periphery of this stronger flow aloft will remain over the middle to lower MO Valley, with a warm front developing across NE and IA. Strong heating will occur east of a surface low either in western NE or KS, with south winds resulting in a deep mixed layer by afternoon. Storms are expected to form over NE, and possibly move into IA or MO through evening in the form of an MCS. This would be fueled by a strengthening southerly low-level jet as well, suggesting an organized system may occur. For now, low probabilities have been added due to uncertainty with placement of any such corridor. Damaging winds would be the main concern. ...Mid Atlantic... Scattered afternoon storms will again be likely over much of the eastern states on Saturday, within a modest southwest flow regime. A high PW environment will remain in place, supporting an uncapped air mass and conditional/localized wind risk. Predictability is low at this time given possible antecedent rain or thunderstorm areas, but low probabilities for wind could be added in later updates. ..Jewell.. 08/06/2026 $$