


Fire Weather Outlook Discussion
Issued by NWS
Issued by NWS
004 FNUS22 KWNS 010621 FWDDY2 Day 2 Fire Weather Outlook NWS Storm Prediction Center Norman OK 0120 AM CDT Tue Jul 01 2025 Valid 021200Z - 031200Z ...Synopsis... A mid-level trough slowly progressing across portions of central California will continue to provide southerly transport of monsoon moisture into portions of the Great Basin on Wednesday, while a shortwave trough located further north over British Columbia will provide support for dry/windy conditions across northern Oregon into southern Washington. ...Dry/Windy... Modest mid-level westerly/southwesterly flow, coupled with deep mixing of dry boundary layer profiles, will support at least Elevated fire-weather conditions across portions of northern Oregon into southern Washington. The strongest winds will be confined to portions of the Cascade gaps/Columbia Gorge, with ERCs across the region nearing or meeting the annual 90th percentiles. ...Dry Thunderstorms... A mix of wet and dry thunderstorms will be possible from east-central Nevada into western Utah, and portions of far southeast Idaho into far western Wyoming. Fuels across significant portions of the Great Basin exceed the 98th annual percentiles, and a combination of low to modest total precipitable water vapor content and 0 - 6 km mean wind speeds ranging from 15 - 25 MPH will result in low precipitation efficiency with thunderstorm updrafts. This will support potential lightning ignitions, particularly with fast moving cells and on the edges of the most intense downdraft cores. ..Halbert.. 07/01/2025 ...Please see www.spc.noaa.gov/fire for graphic product... $$