527 

FNUS21 KWNS 050653

FWDDY1



Day 1 Fire Weather Outlook  

NWS Storm Prediction Center Norman OK

0152 AM CDT Fri Jun 05 2026



Valid 051200Z - 061200Z



...Synopsis...

An upper-level trough is forecast to move over the Northwest Coast

increasing mid-level southwesterly flow across the northern Rockies

and portions of the Great Basin. A second, weaker upper low and

associated moisture will move from Northern Mexico into the southern

Plains. While flow aloft will be weak over much of the Southwest,

hot and dry conditions will support elevated fire-weather potential.



...Great Basin and Southwest...

To the immediate south of the belt of stronger mid-level flow,

stagnant mid-level heights will promote a very warm and dry air mass

across much of the southern Great Basin and Southwest. Very low

daytime RH near 10% to upper single digits are expected amid 10-15

mph terrain-driven winds. Exacerbated by poor overnight humidity

recoveries and drying fuels, these conditions will support elevated

fire weather concerns across northwest Arizona, southeastern Nevada,

and southwestern Utah through the afternoon hours.



Farther east into parts of western NM, mid-level moisture associated

with the upper low over northern Mexico will promote isolated to

widely scattered thunderstorms through the afternoon. Steep

low-level lapse rates and high cloud bases will favor limited

precipitation efficiency. This could allow for some drier storms.

However, fuels over the area are less receptive owing to recent

precipitation. Still, occasional lightning starts are possible

within locally drier fuel beds.



..Lyons.. 06/05/2026



...Please see www.spc.noaa.gov/fire for graphic product...



$$