


Fire Weather Outlook Discussion
Issued by NWS
Issued by NWS
923 FNUS21 KWNS 131713 FWDDY1 Day 1 Fire Weather Outlook CORR 1 NWS Storm Prediction Center Norman OK 1212 PM CDT Sun Jul 13 2025 Valid 131700Z - 141200Z CORRECTED FOR IMPROPER LABEL ...Mogollon Rim... Daytime heating and instability within a corridor of precipitable water values of 0.50-0.75 inches will support isolated dry thunderstorm development across the Mogollon Rim this afternoon. Heavier precipitation cores in the lower desert areas in southern Arizona (with PWATs of around one inch) will limit new ignition potential to the Mogollon Rim corridor where dry fuels exist. ..Williams.. 07/13/2025 .PREV DISCUSSION... /ISSUED 1134 PM CDT Sat Jul 12 2025/ ...Synopsis... A mid-level wave will begin to traverse the northern periphery of the western ridge today, bringing an increase in westerly flow across the Cascades in central Washington and northern Oregon. Elevated fire weather conditions will be likely across the Cascade Gaps and into the Columbia Basin, where relative humidity reductions around 20 percent will overlap winds sustained 10-15 mph (locally higher). An Elevated was maintained with this outlook to support potential for increased fire spread potential. ...Dry Thunderstorms... A mix of wet/dry thunderstorms will be possible in Northern Arizona today. Moisture banked across the Mogollon Rim becomes less with northern extent, where PWs drop to around 0.25-0.50". Storm motions will be around 10-20 mph, but coverage should allow multiple rounds of storms. However, outside of heavier cores and where less coverage is expected across the western rim, there could be a few instances of dry lightning. Overall, the small coverage of this risk does not warrant inclusion of an area at this time. ...Please see www.spc.noaa.gov/fire for graphic product... $$