Fire Weather Outlook Discussion
Issued by NWS
Issued by NWS
811 FNUS22 KWNS 131926 FWDDY2 Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0225 PM CDT Thu Aug 13 2026 Valid 141200Z - 151200Z No changes were made to the drawn areas. Consideration was given to extending the Isolated Dry Thunder area further north along the eastern side of the Cascades. However, given the slightly more moist environment, slower storm motions, and resultant likelihood for storms to remain anchored over high terrain, an expansion was decided against. Over the southern Plains, model consensus is trending the driest conditions slightly farther north/east. If this trend continues, a slight reduction in the southwestern extent of the current Elevated area may be necessary. The limiting factor is whether or not RHs will drop low enough during peak heating, which is contingent, at least in part, upon if, how widespread, and how much rainfall could occur on Day 1/Thursday over the eastern TX Panhandle. ..Stearns.. 08/13/2026 .PREV DISCUSSION... /ISSUED 1251 AM CDT Thu Aug 13 2026/ ...Synopsis... Troughing will remain along the West Coast while upper ridging will continue to edge eastward into the Upper Midwest and Deep South for D2/Friday. This troughing along with monsoon moisture across much of the West should bring another round of isolated afternoon showers and thunderstorms to the northwest CA mountains into southwestern and central OR. Persistent dry and breezy conditions south of a surface trough and attendant frontal boundary across the central plains will bring elevated fire weather concerns to portions of the Southern Plains. ...Southern Plains... Relentless heat with highs in the lower 100s will result in RH reductions to 15-20 percent by Friday afternoon. Breezy southerly winds of 15-20 mph south of a lingering surface trough across the Central Plains will present an elevated fire weather threat to portions of northwestern TX and western OK as very dry fuels remain across the region. A corridor of thunderstorms in proximity to a diffuse frontal boundary is expected to evolve over the TX/OK Panhandles and northeastward into southern KS. However, the sub-cloud boundary layer could be modified by convection on D1/Thursday, inhibiting the overall threat of additional dry thunderstorms. ...Northwest California and southwest/central Oregon... An isolated dry thunderstorm threat exists for portions of northwestern CA and OR Friday. Upper-level troughing across the West Coast, monsoon moisture and increasing instability will likely bring isolated convection back into the mountains of northwestern CA, Oregon Cascades and central OR. PWATs generally below 0.90" and faster northeastward thunderstorm trajectories bolstered by a mid-level wave moving towards the Cascades, will promote limited rainfall in some locations. Although monsoon moisture will generally improve fuels over the next several days, ERC values still nearing the 90th percentile and should promote the potential for new ignitions Friday. ...Please see www.spc.noaa.gov/fire for graphic product... $$