


Fire Weather Outlook Discussion
Issued by NWS
Issued by NWS
499 FNUS28 KWNS 072202 FWDD38 Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0500 PM CDT Mon Jul 07 2025 Valid 091200Z - 151200Z ...Day 3/Wednesday... Stronger west winds with the arrival of a mid-level short wave trough and attendant cold front are expected across the Columbia Basin where fuels remain dry. Although cooler temperatures and slightly higher humidity arrive with the cold front, sustained west winds of 15-25 mph will continue to support a fire weather threat amid dry fuels across the Columbia Basin. A mid-level short wave trough will translate over a broad ridge situated over the Southwestern U.S. Collocation of ascent ahead of a mid-level jet max and antecedent mid-level moisture should support isolated thunderstorms with limited rainfall across southeastern OR/southwestern ID on Day 3/Wednesday. The accelerated mid-level flow on the southern periphery of the aforementioned short wave along with a deep/well-mixed boundary layer will promote elevated west-southwest winds across much of the Great Basin and portions of southern Idaho. The breezy and very dry conditions support at least a 40% probability for critical fire weather conditions across the region amid an expected dry fuelscape. ...Day 4/Thursday... The mid-level short wave edges eastward into the Southern Rockies bringing elevated west winds to the Intermountain West and great Four Corners region Day 4/Thursday. A 40% probability for critical fire weather was introduced into southern UT and northern AZ where fuels will go under several days of drying through midweek, becoming more receptive to wildfire spread. ...Day 5-8/Friday-Monday... Building heat is expected across much of the Western U.S. through the weekend under an expanding mid-level ridge over southern CA which will promote a limited wind threat across the region. Monsoon moisture and associated thunderstorms will remain confined to southern AZ and NM through the weekend. ..Williams.. 07/07/2025 ...Please see www.spc.noaa.gov/fire for graphic product... $$