953
FNUS21 KWNS 241632
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1131 AM CDT MON AUG 24 2026
VALID 241700Z - 251200Z
A PASSING MID-LEVEL WAVE WILL INDUCE PERIODS OF LOCALLY ELEVATED
FIRE WEATHER CONDITIONS ACROSS PORTIONS OF THE KLAMATH RIVER BASIN
TODAY. RH VALUES MAY DECLINE TO LESS THAN 15% WITH WIND GUSTS OVER
20 MPH IN TERRAIN FAVORED AREAS; HOWEVER, SPATIAL EXTENT AND
DURATION OF THESE CONDITIONS WILL BE LIMITED, PRECLUDING THE
INTRODUCTION OF HIGHLIGHTS.
BASED ON THE LATEST GUIDANCE AND OBSERVATIONS, ONLY MINOR
ADJUSTMENTS WERE MADE TO THE ISOLATED DRY THUNDERSTORM RISK AREA IN
THE NORTHERN GREAT BASIN AND ELEVATED HIGHLIGHTS IN THE SOUTHERN
PLAINS. PLEASE SEE THE PREVIOUS DISCUSSION FOR MORE DETAILS.
..ELIZALDE-GARCIA.. 08/24/2026
PREV DISCUSSION
/ISSUED 0157 AM CDT MON AUG 24 2026/
..SYNOPSIS
A SUBTLE/LOW-AMPLITUDE MIDLEVEL WAVE WILL MOVE NORTHEASTWARD ACROSS
PARTS OF THE NORTHERN GREAT BASIN TODAY. FARTHER SOUTH, A SEPARATE
SHORTWAVE TROUGH WILL TRACK SOUTHEASTWARD ACROSS THE
CENTRAL/SOUTHERN PLAINS -- ALONG THE NORTHEASTERN PERIPHERY OF AN
EXPANSIVE UPPER RIDGE CENTERED ON THE SOUTHERN ROCKIES. IN RESPONSE
TO THIS FEATURE, A SURFACE LOW WILL EVOLVE SLOWLY EASTWARD ACROSS
PARTS OF OK.
..DRY THUNDERSTORMS - NORTHERN GREAT BASIN
DIURNAL HEATING/BOUNDARY-LAYER MIXING BENEATH A WELL-ESTABLISHED
MIDLEVEL MOISTURE PLUME WILL CONTRIBUTE TO WEAK SURFACE-BASED
DESTABILIZATION ACROSS PARTS OF THE NORTHERN GREAT BASIN TODAY. AS
LARGE-SCALE FORCING FOR ASCENT ACCOMPANYING THE MIDLEVEL WAVE
OVERSPREADS THIS INSTABILITY, ISOLATED HIGH-BASED THUNDERSTORMS WILL
TRACK NORTHEASTWARD ACROSS THE AREA. THE DEEPLY MIXED BOUNDARY LAYER
(INVERTED-V PROFILES) AND 25-30 MPH STORM MOTIONS WILL FAVOR DRY
THUNDERSTORMS CAPABLE OF LIGHTNING-INDUCED IGNITIONS -- GIVEN
RECEPTIVE FUELS.
..SOUTHERN PLAINS
ALONG/BEHIND THE EVOLVING SURFACE LOW, A DRY AIR MASS (15-20 PERCENT
RH) WILL DEVELOP AMID 15-20 MPH SUSTAINED WEST-SOUTHWESTERLY SURFACE
WINDS. THESE DRY/BREEZY CONDITIONS ATOP INCREASINGLY DRY FUELS
(95TH+ PERCENTILE ERCS) WILL YIELD ELEVATED FIRE-WEATHER CONDITIONS
DURING THE LATE MORNING AND AFTERNOON.
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
CLICK HERE TO GO TO PREVIOUS BULLETINS.
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