044
FNUS21 KWNS 210520
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1220 AM CDT TUE APR 21 2026
VALID 211200Z - 221200Z
...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF CENTRAL FLORIDA AND
THE WEST FLORIDA COAST...
..SYNOPSIS
BROAD NORTHWEST FLOW ALOFT WILL ENCOMPASS MUCH OF NORTHEAST AND MID
ATLANTIC IN THE WAKE OF A DEPARTING UPPER-TROUGH. A DRY AIRMASS WILL
REMAIN IN PLACE ACROSS THE EASTERN U.S., SOUTHEAST AND DEEP SOUTH AS
SURFACE HIGH PRESSURE SHIFTS INTO THE ATLANTIC. FARTHER WEST, A
NEGATIVELY-TILTED UPPER TROUGH WILL SURGE INTO THE WESTERN U.S.,
WITH DRY AND BREEZY CONDITIONS FOCUSED OVER THE GREAT BASIN AHEAD OF
AN ADVANCING COLD FRONT.
..FLORIDA INTO SOUTHERN GEORGIA
EAST TO NORTHEAST WINDS OF 10-15 MPH ON THE SOUTHERN FRINGE OF THE
SURFACE HIGH ARE EXPECTED TODAY ACROSS PORTIONS OF SOUTHERN GA INTO
FL. STRONGER SUSTAINED EAST WINDS OF 15 MPH (WITH HIGHER GUSTS) WILL
BE LOCATED FARTHER SOUTH ACROSS THE FL PENINSULA, WHILE DRIER
CONDITIONS INCLUDING RELATIVE HUMIDITY AS LOW AS 15% AMID HIGHER
TEMPERATURES IN THE LOWER 80S WILL BE DISPLACED TO THE NORTH OVER
THE FL PANHANDLE AND SOUTHERN GA. CRITICAL FIRE WEATHER CONDITIONS
ARE EXPECTED ACROSS PORTIONS OF CENTRAL FL AND THE WEST FL COAST
WHERE SUSTAINED WINDS ARE LIKELY TO REACH 15 MPH AND RH FALLS INTO
THE 25-35% RANGE. ELEVATED FIRE WEATHER CONCERNS WERE EXTENDED INTO
MUCH OF THE FL PANHANDLE WHERE OFFSHORE TRAJECTORIES WILL MAINTAIN A
DRY BOUNDARY LAYER THROUGH MUCH OF THE AFTERNOON. FUELS REMAIN VERY
RECEPTIVE AMID WORSENING DROUGHT CONDITIONS WITH ONGOING FIRE
ACTIVITY.
..LOWER MISSISSIPPI VALLEY
A RELATIVE MINIMUM IN RECENT RAINFALL AND EXISTING DRY FUELS
COUPLED WITH DRY RETURN FLOW ON THE WESTERN PERIPHERY OF THE BROAD
SURFACE HIGH PRESSURE MOVING OFF THE MID ATLANTIC, WILL BRING A FIRE
WEATHER THREAT TO PORTIONS OF WESTERN TN/MS AND EASTERN AR. SOUTH TO
SOUTHWEST WINDS OF 10-15 MPH AMID RELATIVE HUMIDITY OF 20-25%
SUPPORTS A CONTINUATION OF ELEVATED FIRE WEATHER HIGHLIGHTS ACROSS
PORTIONS OF THE LOWER MS RIVER VALLEY.
..EAST-CENTRAL WYOMING
A LIMITED FIRE WEATHER THREAT WILL EMERGE ACROSS EAST-CENTRAL WY
WITH A WEAK DOWNSLOPE WARMING AND DRYING REGIME IN PLACE ACROSS THE
CENTRAL HIGH PLAINS. A SHALLOW NEAR-SURFACE TEMPERATURE INVERSION
WILL QUICKLY MIX OUT UNDER MOSTLY SUNNY SKIES THROUGH THE LATE
MORNING HOURS, FOLLOWING POSSIBLE POOR RH RECOVERIES OVERNIGHT IN
EASTERN WY/CO. RH OF 10% OR BELOW IS LIKELY BY THE AFTERNOON ACROSS
THE CENTRAL HIGH PLAINS. HOWEVER, WEAK BOUNDARY LAYER FLOW AND LACK
OF SUBSTANTIAL SURFACE LEE TROUGHING ACROSS THE REGION SHOULD LIMIT
SPATIAL EXTENT AND DURATION OF SUSTAINED WEST WINDS OF UP TO 15 MPH
ACROSS EAST-CENTRAL WY, PRECLUDING INTRODUCTION OF ELEVATED
HIGHLIGHTS.
..WILLIAMS.. 04/21/2026
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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