168
FNUS21 KWNS 150559
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1258 AM CDT TUE SEP 15 2026
VALID 151200Z - 161200Z
..SYNOPSIS
A SHORTWAVE TROUGH WILL ENTER THE PACIFIC NORTHWEST TODAY, BRINGING
SLIGHTLY COOLER TEMPERATURES AND CHANCES OF LIGHT PRECIPITATION TO
THE CASCADES AND ADJACENT TERRAIN. AHEAD OF THE TROUGH, DRY
SOUTHWESTERLY FLOW WILL ACCELERATE OVER THE GREAT BASIN AND
REJUVENATE FIRE WEATHER CONCERNS WHERE FUELS ARE GROWING MORE
RECEPTIVE IN CENTRAL-EASTERN NEVADA. HIGH PRESSURE WILL CONTINUE TO
EXPAND OVER THE SOUTHEAST AND INTO THE CENTRAL U.S. AS SURFACE
TROUGHING PROMOTES HOT, DRY, AND WINDY CONDITIONS IN NORTHWEST TEXAS
AND SOUTHWESTERN OKLAHOMA.
..SOUTHERN PLAINS
A STRONG LOW-LEVEL JET SUPPORTIVE OF 30-40 MPH WIND GUSTS EARLY THIS
MORNING (DIMINISHING AFTER 17Z) MAY EXACERBATE ESTABLISHED FIRES
WITHIN THE LANDSCAPE. A COLD FRONT WILL SLOWLY PROGRESS SOUTHWARD
THROUGH WESTERN KANSAS, EVENTUALLY STALLING IN NORTHWEST OKLAHOMA
THIS AFTERNOON. COMPRESSIONAL HEATING AHEAD OF THE COLD FRONT WILL
PROMOTE HIGH TEMPERATURES OF 100 DEGREES OR GREATER ACROSS THE
REGION. SOUTHERLY SUSTAINED WINDS OF 10-15 MPH AND RH VALUES OF
15-25% WILL SUPPORT ANOTHER DAY OF ELEVATED FIRE WEATHER CONDITIONS
WITHIN A DROUGHT STRESSED ENVIRONMENT.
IN ADDITION, SUFFICIENT BOUNDARY LAYER MIXING WILL SUPPORT INCREASED
BUOYANCY ALONG THE FRONT, GENERATING SCATTERED THUNDERSTORMS ACROSS
NORTHWESTERN OKLAHOMA THIS AFTERNOON. LIGHTNING-INDUCED IGNITIONS ON
THE PERIPHERY OF ACCUMULATING PRECIPITATION ARE A CONCERN, ALONGSIDE
LOCALLY STRONG/ERRATIC OUTFLOW WINDS (SEE THE DAY 1 CONVECTIVE
OUTLOOK FOR DETAILS).
..CENTRAL-EASTERN NEVADA
DRY AND BREEZY CONDITIONS SOUTHEAST OF AN UPPER-LEVEL TROUGH ACROSS
THE PACIFIC NORTHWEST WILL AFFECT PORTIONS OF THE GREAT BASIN. AN
ELEVATED FIRE WEATHER THREAT EXISTS THIS AFTERNOON WHERE SOUTHWEST
WINDS OF 15-20 MPH AND RH AS LOW AS 10% WILL COMBINE ATOP DRYING
FUELS.
..ELIZALDE-GARCIA.. 09/15/2026
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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