701
FNUS21 KWNS 190448
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1147 PM CDT FRI SEP 18 2026
VALID 191200Z - 201200Z
..SYNOPSIS
A MID-LEVEL LOW ACROSS THE WESTERN US WILL MOVE INTO THE NORTHERN
ROCKIES TODAY, WITH A SURFACE LOW DEVELOPING ACROSS THE CENTRAL
PLAINS.AS THE SURFACE LOW DEEPENS, PRESSURE GRADIENTS WILL INCREASE
ACROSS THE CENTRAL/SOUTHERN PLAINS WITH BREEZY SOUTH TO
SOUTHWESTERLY WINDS. A COLD FRONT WILL MOVE SOUTHWARD INTO THE
CENTRAL PLAINS AND EVENTUALLY INTO THE SOUTHERN PLAINS.
..SOUTHERN OKLAHOMA INTO NORTH-CENTRAL TEXAS.
AHEAD OF THE APPROACHING COLD FRONT, SURFACE PRESSURE GRADIENTS WILL
INCREASE, WITH SOUTHWESTERLY SURFACE WINDS TO AROUND 10-20 MPH
OVERLAPPING WITH RELATIVE HUMIDITY REDUCTIONS TO AROUND 25-30
PERCENT ACROSS PORTIONS OF SOUTHERN OKLAHOMA INTO NORTH-CENTRAL
TEXAS. GUIDANCE HAS COME IN WITH HIGHER RELATIVE HUMIDITY THAN IN
PREVIOUS RUNS, WITH A FEW MEMBERS MAINTAINING RELATIVE HUMIDITY AT
OR ABOVE 30 PERCENT. AS SUCH, THE ELEVATED WAS TRIMMED DOWN TO
INCLUDE HIGHEST PROBABILITY OF RELATIVE HUMIDITY AROUND 25-30
PERCENT OVERLAPPING WITH THE BELT OF STRONGER WINDS BASED ON HREF
ENSEMBLE GUIDANCE.
..THORNTON.. 09/19/2026
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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