ZCZC SPCFWDD38 ALL FNUS28 KWNS 092221 Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0521 PM CDT Sun Aug 09 2026 Valid 111200Z - 171200Z ...Synopsis... Following the flattening of the upper ridge across the northwestern CONUS, high pressure over the Four Corners will gradually translate eastward early next week. These conditions could also encourage any lightning-induced holdovers to emerge, resulting from preceding days of forecast dry thunderstorms. As such, 10% Dry Thunderstorm probabilities have been included where less precipitation efficiency is expected, and forecast ERCs remain at the 80-95th percentiles. ...Southern High Plains... High pressure will center over the Central U.S. on Day 4/Wednesday, and will continue to slide eastward through the forecast period.