991
FNUS21 KWNS 050701
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0200 AM CDT TUE AUG 05 2025
VALID 051200Z - 061200Z
..CRITICAL FIRE WEATHER AREA FOR SOUTHERN/CENTRAL UTAH
FAR
NORTHERN ARIZONA...AND NORTHWEST COLORADO...
..SYNOPSIS
AN EXPANSIVE MIDLEVEL ANTICYCLONE WILL BUILD OVER THE SOUTHWEST,
WHILE BROAD MIDLEVEL TROUGHING PERSISTS ACROSS MUCH OF THE
INTERMOUNTAIN WEST/GREAT BASIN. BETWEEN THESE TWO FEATURES, ENHANCED
DEEP-LAYER WEST-SOUTHWESTERLY FLOW WILL BE MAINTAINED ACROSS THE
GREAT BASIN INTO THE NORTHERN/CENTRAL ROCKIES.
..GREAT BASIN INTO THE CENTRAL ROCKIES
DIURNAL HEATING AMID A WARM/DRY ANTECEDENT AIR MASS WILL LEAD TO
ANOTHER DAY OF WIDESPREAD SINGLE-DIGIT TO LOWER TEENS RH. AT THE
SAME TIME, DEEP BOUNDARY-LAYER MIXING INTO THE ENHANCED FLOW ALOFT
WILL FAVOR BREEZY/GUSTY WEST-SOUTHWESTERLY SURFACE WINDS AREA-WIDE.
ACROSS SOUTHERN/CENTRAL UT, FAR NORTHERN AZ, AND NORTHWEST CO, THE
OVERLAP OF 20-25 MPH SUSTAINED SURFACE WINDS AND SINGLE-DIGIT RH
WILL RESULT IN CRITICAL FIRE-WEATHER CONDITIONS, GIVEN HIGHLY
RECEPTIVE FUELS AND SEVERAL ONGOING WILDFIRES ACROSS THE REGION.
..DRY THUNDERSTORMS - SOUTHWEST
THE 00Z TUS OBSERVED SOUNDING SAMPLED INCREASING MIDLEVEL MOISTURE
THAT IS BEING DRAWN NORTHWARD ALONG THE WESTERN PERIPHERY OF THE
EXPANSIVE MIDLEVEL ANTICYCLONE. ALONG THE NORTHERN EDGE OF THE
DEEPER MOISTURE PLUME, INVERTED-V SOUNDINGS AND 0.60-0.75 INCH PW
WILL PROMOTE ISOLATED DRY THUNDERSTORMS ACROSS PARTS OF EASTERN AZ
AND WESTERN NM DURING THE AFTERNOON. THESE STORMS WILL POSE A RISK
OF STRONG/ERRATIC OUTFLOW WINDS AND LIGHTNING-INDUCED IGNITIONS OVER
DRY FUELS.
..WEINMAN.. 08/05/2025
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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