Fire Weather Outlook Discussion
Issued by NWS
Issued by NWS
227 FNUS21 KWNS 291625 FWDDY1 Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1124 AM CDT Wed Jul 29 2026 Valid 291700Z - 301200Z ...NO CRITICAL AREAS... Along the periphery of monsoonal moisture, mixed wet/dry thunderstorms capable of strong/severe wind gusts are expected this afternoon across south-central to southeastern Idaho (See the SPC Day 1 Convective Outlook). Despite 0.7-1.0" PWATs, a dry sub-cloud layer and fast storm motions may restrict higher accumulations of rainfall (except in areas that receive multiple rounds of thunderstorms). Fuels range from the 70-90th percentile, with the lowest ERCs in southeastern Idaho where recent (48-hour) rain has fallen, increasing to the 90th percentile farther north and west. Lightning ignitions cannot be ruled out, especially where drier fuels exist. See the previous forecast discussion for additional information. ..Elizalde-Garcia.. 07/29/2026 .PREV DISCUSSION... /ISSUED 1234 AM CDT Wed Jul 29 2026/ ...Synopsis... Weak upper-level troughing will linger over the northwestern US with a cold front stalling and weakening over the northwest Great Basin into the northern Rockies. Upper-level heights will build over much of the West while the upper high remains over the southern High Plains/Rockies. Weak shortwave troughs may rotate through the weak troughing over the northwestern US and around the western/northern periphery of the upper high over portions of the Great Basin and central Rockies. Locally elevated conditions are likely to develop across portions of Nevada with forecast southerly to westerly sustained winds of 10-15 mph with gusts of 20-25 mph amid minimum RH of 5-15%. The increase of breezy winds will be along a surface thermal trough and below slightly increased winds aloft due to a passing weak mid-level shortwave trough. Active large fires near the periphery of monsoonal moisture and thunderstorm chances in the central/eastern Great Basin may produce deep pyroconvection as well. ...Please see www.spc.noaa.gov/fire for graphic product... $$