Fire Weather Outlook Discussion
Issued by NWS
Issued by NWS
462 FNUS28 KWNS 142150 FWDD38 Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0448 PM CDT Fri Aug 14 2026 Valid 161200Z - 221200Z ...Synopsis... Mid/upper troughing near the West Coast will wane as the upper ridge across the central US retrogrades westward by early Day 4/Monday, allowing drier conditions to infiltrate much of the Great Basin and Cascades. A mid-level short wave arriving early next week along with residual monsoonal moisture could bring additional thunderstorms to portions of the Northern Rockies Day 4/Monday, while also promoting dry and breezy conditions across portions of the northern Great Basin. Forecast uncertainty increases Day 6 onward as ensemble spread reduces predictability in the longer term across the western U.S. as fuels likely rebound to the drier side from recent monsoon moisture. ...Day 4/Monday... ...Central Idaho and the Northern Rockies... The aforementioned short wave moving into the Northwest, lingering monsoonal moisture and daytime heating will promote a favorable convective environment across portions of the Northern Rockies, central ID and perhaps into northeastern OR on Day 4/Monday. However, preceding days of showers and thunderstorms and good overnight RH recoveries could temporarily reduce fuel receptiveness leading up to this event. Although critical probabilities were not introduced for this outlook, the dry thunderstorm threat will be monitored for inclusion in future outlooks once assessment of rainfall distribution becomes clearer. ...Northwestern California, southern Oregon and northwestern Nevada... The same short wave and attendant mid-level speed max will likely bring dry and breezy conditions to parts of the northern Great Basin into northwestern CA on Day 4/Monday. A relative minimum of rainfall has been observed in this area over the last several days of monsoon-related showers and thunderstorms across the broader western U.S. A warming and drying trend is expected with the arrival of stronger west/southwest winds. This coupled with existing dry fuels will increase fire weather concerns, where 40 percent critical probabilities were introduced for northeastern CA, northwestern NV and southern OR for Day 4/Monday. ...Day 5/Tuesday - Southern Plains... Expanding drought and continued above normal 100F+ temperatures will most likely stay in place through next week across portions of the Southern Plains. Increasing southerly winds are expected to evolve south of a nascent Central Plains surface low/trough over portions of the northwest TX and western OK. South winds of 15-20 mph collocated with low afternoon RH and very dry fuels will bring an enhanced fire weather concern to the area Day 5/Tuesday, with 40 percent critical probabilities introduced. ..Williams.. 08/14/2026 ...Please see www.spc.noaa.gov/fire for graphic product... $$