


Fire Weather Outlook Discussion
Issued by NWS
Issued by NWS
237 FNUS28 KWNS 102152 FWDD38 Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0450 PM CDT Sun Aug 10 2025 Valid 121200Z - 181200Z Upper-level troughing will develop across the Pacific Northwest D3/Tuesday into D4/Wednesday, bringing an increase to winds amid dry conditions. Rain and thunderstorm chances may increase across this region by late in the period. As the western highs shifts into the Four Corners Region, monsoonal moisture may return northward across portions of Arizona through mid to lake week, with lingering isolated dry thunderstorm chances before a shift to more wetting rainfall potential. ...Dry Thunderstorms... Isolated thunderstorms D3/Tuesday - D5/Thursday will become more widely scattered with a gradual increase in moisture northward as the western high shifts into the Four Corners region through the weekend. This may lead to an increase in wetting rainfall, with less potential for dry thunderstorms. Some lingering isolated dry thunderstorm chances may be possible, but for now this threat appears too low for inclusion of any areas. ...Wind/RH... Breezy conditions are expected across the Pacific Northwest as the pattern becomes more progressive, with broad troughing and several shortwave disturbances moving through early to mid-week. The most widespread winds are expected D4/Wednesday, when Elevated to locally Critical conditions are expected across portions of the Columbia River Basin in eastern Washington and Oregon as a trough moves inland and enhanced westerly flow overspreads the Cascade Range. A 40% delineation was added with this outlook to cover this potential. ..Thornton.. 08/10/2025 ...Please see www.spc.noaa.gov/fire for graphic product... $$