ACUS03 KWNS 220652 SWODY3 SPC AC 220651 Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0151 AM CDT Sat Aug 22 2026 Valid 241200Z - 251200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS FOR PORTIONS OF THE CENTRAL HIGH PLAINS INTO THE NORTHERN PLAINS.... ...SUMMARY... Strong to severe storms capable of large hail and severe wind gusts are possible from the northern to central High Plains on Monday. ...Central to the Northern Plains... The strong ridge which has been present for much of the last 3 weeks will continue across the southern Plains and the High Plains. However, the northern extent of this ridge will be flattened with a frontal zone extending from the northern Plains into the central High Plains. Moderate instability is forecast along this frontal zone where isolated to scattered storms are expected on Monday. The strongest shear is expected across North Dakota into Minnesota where a 40 knot jet streak will overspread the region. Isolated storms may form along the front in this region during the day, but the better signal for storms is during the evening when a mid-level shortwave trough approaches the region from southern Canada. The greater diurnal storm coverage is anticipated in the Nebraska Panhandle and into southwest South Dakota. However, the weaker shear across this region may result in only marginally organized storms. Therefore, a few severe wind gusts are possible and thus the Marginal is warranted, but the relatively unorganized storm mode precludes higher severe weather probabilities at this time. ..Bentley.. 08/22/2026 $$