052
FNUS21 KWNS 251624
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1123 AM CDT FRI SEP 25 2026
VALID 251700Z - 261200Z
NO CHANGES WERE MADE TO THE EXISTING FIRE WEATHER OUTLOOK AS A BROAD
ELEVATED FIRE WEATHER THREAT COMMENCES OVER THE NORTHERN GREAT
BASIN. WEST-SOUTHWEST WINDS AHEAD OF A COLD FRONT CURRENTLY MOVING
THROUGH NORTHERN CA INTO EASTERN OR WILL ACCELERATE THROUGH THE
EARLY AFTERNOON HOURS ACROSS MUCH OF NORTHERN NV INTO ADJACENT
SOUTHEASTERN OR AND SOUTHWESTERN ID. AMPLE INSOLATION ASIDE FROM A
FEW HIGH CLOUDS WILL PROMOTE A WELL-MIXED BOUNDARY LAYER BY
MID-AFTERNOON LEADING TO WEST-SOUTHWEST WINDS OF 15-20 MPH WITH
HIGHER GUSTS. THESE WINDS COMBINED WITH DRY CONDITIONS INCLUDING RH
AS LOW AS 15% WILL SUPPORT AN ELEVATED FIRE WEATHER THREAT OVER
SUFFICIENTLY DRY FUELS. A MORE LIMITED FIRE WEATHER RISK IS EXPECTED
ACROSS FAR NORTHWESTERN NV INTO SOUTHEASTERN OR AS THE FRONT
PROGRESSES SOUTHEASTWARD THROUGH THE DAY USHERING IN A
WEST-NORTHWEST WIND SHIFT, INCREASING SURFACE DEWPOINTS/RH AND
ADDITIONAL CLOUD COVER.
..WILLIAMS.. 09/25/2026
PREV DISCUSSION
/ISSUED 0159 AM CDT FRI SEP 25 2026/
..SYNOPSIS
WITHIN THE BASE OF A ROBUST MIDLEVEL TROUGH MOVING EASTWARD ACROSS
THE NORTHWEST, 40-50-KT MIDLEVEL WEST-SOUTHWESTERLY FLOW WILL
OVERSPREAD THE NORTHERN GREAT BASIN TODAY. DOWNSLOPE-AIDED WARMING
AND DRYING WILL PROMOTE DEEP BOUNDARY-LAYER MIXING, ALLOWING
STRONGER FLOW ALOFT TO EFFICIENTLY MIX TO THE SURFACE AHEAD OF AN
EASTWARD-MOVING COLD FRONT. AS A RESULT, A CORRIDOR OF 15-20 MPH
SUSTAINED WEST-SOUTHWESTERLY SURFACE WINDS WILL COMBINE WITH 15-20
PERCENT RH ACROSS PARTS OF NORTHERN NV, SOUTHEASTERN OR, AND
SOUTHWESTERN ID THIS AFTERNOON. GIVEN AT LEAST MODESTLY RECEPTIVE
FUELS, ELEVATED FIRE-WEATHER CONDITIONS ARE EXPECTED.
A NORTHERLY WIND SHIFT IS EXPECTED BEHIND THE COLD FRONT THIS
EVENING, THOUGH WEAKER POST-FRONTAL WIND SPEEDS SHOULD LIMIT
ADDITIONAL FIRE-WEATHER CONCERNS.
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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