FNUS28 KWNS 032157 FWDD38 Day 3-8 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0455 PM CDT Thu Jul 03 2025 Valid 051200Z - 111200Z ...Day 3/Saturday... A mid-level short wave trough will lift into the Montana and northern High Plains through Day 3/Saturday. Widespread wetting rains are expected across much of the Northern Rockies while lingering southwest flow will present a fire weather threat to portions of southeastern NV/southwestern UT. Elevated mid-level winds along with a well-mixed boundary layer will support breezy and dry conditions for the southern Great Basin on Day 3/Saturday, where 40 percent critical probabilities have been added. ...Days 4-8/Sunday-Thursday... A building Four Corners high along with a quasi-stationary mid-level low offshore of northern CA will support a persistent dry, southwest flow pattern over the Southwestern U.S. and Great Basin Region from Day 4-7/Sunday-Wednesday. A primary impact of the building mid-level ridge will be increasing heat across the Western U.S., promoting drying of fuels across the region while southwest aloft keeps monsoon moisture and associated showers and thunderstorms confined to the Continental Divide and southern Arizona. Ensemble guidance suggests a slight shift westward of the Four Corners high towards the lower Colorado River basin midweek, potentially inviting a push of monsoon moisture into Southern California and Great Basin Days 7-8/Wednesday-Thursday. However, uncertainty remains high enough to preclude critical probabilities for dry thunderstorms at this time. ..Williams.. 07/03/2025 ...Please see www.spc.noaa.gov/fire for graphic product... $$