


Fire Weather Outlook Discussion
Issued by NWS
Issued by NWS
091 FNUS21 KWNS 081648 FWDDY1 Day 1 Fire Weather Outlook NWS Storm Prediction Center Norman OK 1147 AM CDT Wed Oct 08 2025 Valid 081700Z - 091200Z ...Upper Midwest... Surface high pressure moving into the Great Lakes along with Lee trough development across the northern High Plains will result in increasingly southerly flow across the Upper Midwest today. A residual and dry, continental air mass resides over much of the Upper Midwest, with current dewpoints in the 20s across western MN/eastern ND. Increasing south winds to around 15 mph by this afternoon combined with relative humidity as low as 15% in some locales will yield elevated fire weather conditions across much of the Red River Valley of the North region today amid a dry fuelscape, supportive of wildfire spread. The elevated highlights were shifted slightly northwest to account for latest observation and short term model trends. ...Intermountain West... Increasing southwest surface winds of 10-20 mph across much of the Southwest, Great Basin and Upper Colorado River Basin are expected today as a mid-level low nears the Pacific Northwest Coast. The best overlap of breezy southwest winds along with relative humidity falling to around 15% will be across the Desert Southwest, western AZ and southern Great Basin. However, limited fuel dryness will subdue a widespread fire weather threat, but localized elevated fire weather conditions are still possible where pockets of drier fuels align. ..Williams.. 10/08/2025 .PREV DISCUSSION... /ISSUED 0151 AM CDT Wed Oct 08 2025/ ...Synopsis... Upper ridging will overspread the central U.S. as mid-level troughs traverse the East and West Coasts today. Surface high pressure will prevail over the eastern U.S. as surface lee troughing becomes established over the Plains States. Across portions of the Upper Mississippi Valley, southerly low-level flow with the surface troughing will be dry in some locales. Across portions of central into northern Minnesota, RH may dip below 30 percent amid 15 mph sustained southerly surface winds for several hours. Elevated highlights have been added where these surface conditions will overlap with dry fuels that support wildfire-spread potential. Elsewhere across the remainder of the CONUS, generally quiescent fire weather conditions are expected. ...Please see www.spc.noaa.gov/fire for graphic product... $$