886
FNUS21 KWNS 251628
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1128 AM CDT WED JUN 25 2025
VALID 251700Z - 261200Z
NO CHANGES ARE NEEDED TO THE D1 FIRE WEATHER OUTLOOK. SEE PREVIOUS
DISCUSSION BELOW FOR MORE INFORMATION.
..THORNTON.. 06/25/2025
PREV DISCUSSION
/ISSUED 1255 AM CDT WED JUN 25 2025/
..SYNOPSIS
FIRE WEATHER CONCERNS ARE EXPECTED TO REMAIN CONFINED TO PORTIONS OF
NORTHWEST NEVADA FOR TODAY WITH MORE LOCALIZED CONCERNS POSSIBLE
ACROSS PARTS OF THE FOUR CORNERS REGION.
..NORTHWEST NEVADA
EARLY-MORNING WATER-VAPOR IMAGERY REVEALS A WEAKENING UPPER TROUGH
ACROSS THE GREAT BASIN. THIS FEATURE IS EXPECTED TO CONTINUE
DE-AMPLIFYING OVER THE NEXT 24 HOURS AS IT MIGRATES NORTHEAST INTO
THE NORTHERN PLAINS. IN ITS WAKE, INCREASING ZONAL FLOW OVER THE
NORTHERN SIERRA NEVADA SHOULD PROMOTE INCREASING DOWNSLOPE WINDS
THROUGH THE AFTERNOON. SUSTAINED WINDS IN THE UPPER TEENS ARE LIKELY
FOR A SMALL SWATH OF NORTHWEST NV AND ADJACENT PORTIONS OF CA AND
OR, THOUGH OCCASIONAL GUSTS INTO THE 20-25 MPH RANGE APPEAR
PLAUSIBLE. RH REDUCTIONS INTO THE TEENS TO LOW 20S ARE EXPECTED, AND
SHOULD SUPPORT AT LEAST A FEW HOURS OF ELEVATED FIRE WEATHER
CONDITIONS. ERC VALUES NEAR THE 80TH PERCENTILE WILL ALSO HELP
SUPPORT A LOW-END FIRE WEATHER CONCERN.
..FOUR CORNERS
THE WEAKENING AND DEPARTURE OF THE UPPER TROUGH WILL RESULT IN
WEAKENING LOW-LEVEL WINDS ACROSS THE SOUTHERN GREAT BASIN/FOUR
CORNERS WHERE FUELS REMAIN VERY DRY PER RECENT ERC ANALYSES. AS
AFTERNOON RH FALLS INTO THE TEENS, LOCALIZED AREAS OF ELEVATED
CONDITIONS APPEAR POSSIBLE ACROSS NORTHERN AZ INTO EASTERN UT WHERE
TERRAIN INFLUENCES CAN SUPPORT 15-20 MPH WINDS. HOWEVER, THIS
POTENTIAL SHOULD REMAIN SUFFICIENTLY LIMITED TO PRECLUDE HIGHLIGHTS.
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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