Severe Storm Outlook Narrative (AC)
Issued by NWS
Issued by NWS
202 ACUS02 KWNS 070558 SWODY2 SPC AC 070557 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1257 AM CDT Fri Aug 07 2026 Valid 081200Z - 091200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FROM PARTS OF THE CENTRAL AND NORTHERN PLAINS SOUTHEASTWARD INTO THE LOWER TO MID MISSOURI VALLEY... ...SUMMARY... Thunderstorms with severe wind gusts will be possible Saturday afternoon and evening across parts of the central and northern Plains southeastward into the lower to mid Missouri Valley. ...Central and Northern Plains/Lower to Mid Missouri Valley... At mid-levels, northwesterly flow will be in place on Saturday over much of the north-central U.S. as the southern edge of a jet streak moves across the northern Plains. At the surface, a cold front will advance southward through the Dakotas. To the south of the front, a moist axis is forecast to be in place from central South Dakota southward into southern Nebraska and eastward into north-central Missouri. Moderate to strong instability appears likely to develop along the moist axis by afternoon. Large-scale ascent will be relatively weak throughout the region which will keep convection isolated. The most favorable areas for isolated thunderstorm development could be over central and eastern Nebraska, where some models focus low-level convergence near a low-level jet in the evening. Additional storms could develop along a moisture gradient in northern Missouri. NAM forecast soundings from Nebraska into southern South Dakota in the late afternoon have 0-6 km shear in the 35 to 45 knot range with steep low-level lapse rates. This could support supercells and organized multicells capable of severe wind gusts and hail. Isolated severe gusts could also occur southeastward along and near the instability gradient in northern Missouri. ..Broyles.. 08/07/2026 $$