


Fire Weather Outlook Discussion
Issued by NWS
Issued by NWS
704 FNUS22 KWNS 140644 FWDDY2 Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0143 AM CDT Thu Aug 14 2025 Valid 151200Z - 161200Z ...Synopsis... Fire weather concerns will continue into Friday across the Great Basin and parts of the northern Rockies. The upper wave currently moving into CA will gradually shift east into the Great Basin over the next 48 hours. This will maintain a weak surface low over the Intermountain West while also supporting a northward surge of deeper monsoonal moisture from AZ into UT, CO, and parts of southern WY. Dry conditions - both at the surface and aloft - will support elevated fire weather conditions as well as dry thunderstorm chances. Latest ensemble guidance suggests a corridor of 15-20 mph winds will likely emerge from southern NV into western UT and eastern ID. Several hours of elevated fire weather conditions are probable as RH values fall into the 10-15% range by late afternoon. Similar to previous days, a combination of steep mid-level lapse rates and modest mid-level moisture on the northwestern fringe of the monsoonal surge will support a swath of 100-500 J/kg MUCAPE across central NV into western WY. Dry boundary layer conditions under the weak buoyancy coupled with 15-25 knot storm motions will favor dry thunderstorms. Latest CAM guidance shows a reasonably strong signal for convection, though coverage may be more limited compared to previous days as stronger synoptic forcing for ascent will likely remain displaced to the south/southeast. Regardless, receptive fuels over the region will continue to yield a lightning-driven fire weather concern. ..Moore.. 08/14/2025 ...Please see www.spc.noaa.gov/fire for graphic product... $$