Fire Weather Outlook Discussion
Issued by NWS
Issued by NWS
615 FNUS22 KWNS 051953 FWDDY2 Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0252 PM CDT Fri Jun 05 2026 Valid 061200Z - 071200Z ...CRITICAL FIRE WEATHER AREA FOR FOR PORTIONS OF THE GREAT BASIN AND SOUTHWEST... An isolated dry thunderstorm area was added across northeastern Colorado with this update. While some areas of the Front Range and High Plains have received above average rainfall in May, the plains to the northeast saw less. Recent guidance from local partners suggests that though some green up is occurring, underlying fuel load is sufficiently dry to carry fire. Precipitable water values range around 0.9-1" but isolated coverage and generally fast storm motions will likely lead to little measurable precipitation. Elevated highlights were also expanded to cover potential for dry/windy conditions in the afternoon. Critical conditions are expected across much of the Great Basin into the Southwest Saturday afternoon. No changes were made to these outlook areas. See previous discussion for more information. ..Thornton.. 06/05/2026 .PREV DISCUSSION... /ISSUED 0154 AM CDT Fri Jun 05 2026/ ...Synopsis... The upper trough over the Northwest is forecast to deepen and intensify as it spread eastward into the Northern Rockies and southern Canada Saturday. A belt of stronger mid-level flow will move southeastward, overspreading a dry and hot air mass over much of the western US. This will promote widespread elevated and critical fire-weather conditions atop dry fuels from the Great basin to the Southwest. ...Great Basin, Intermountain West and the Southwest... As the upper trough over the Northwest/northern Rockies intensifies, a belt of stronger flow will overspread the hot and dry surface conditions across the Western US. The mid-level jet max will aid in efficient mixing of strong winds to the surface. Sustained southwest winds of 20 to 30 mph are anticipated. With continued poor overnight recoveries, RH values in the single digits and low teens are expected on a widespread basis. Sustained critical fire weather conditions are expected across portions of eastern NV, southern UT, and northern AZ. Weaker flow aloft farther south and east will still promote widespread elevated conditions with 10-20% RH and surface gusts of 15-20 mph. Potentially enhanced by local terrain across southern AZ into the Four Corners, some potential for brief critical conditions may develop given drying fuels and increasing burn period duration. ...ID and Northern Rockies... Ascent from the upper trough will impinge on the western edge of surface moisture moving westward into the higher terrain. This ascent and diurnal heating could support isolated thunderstorm development across southern and eastern ID. Likely high-based, these fast-moving storms would have limited precipitation efficiency. Isolated dry lightning strikes would be possible. Currently, convection appears more likely farther northeast where moisture is more robust. ...Please see www.spc.noaa.gov/fire for graphic product... $$