762
FNUS21 KWNS 120655
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0155 AM CDT FRI JUN 12 2026
VALID 121200Z - 131200Z
..SYNOPSIS
BETWEEN A BROAD LARGE-SCALE TROUGH ENCOMPASSING THE NORTHERN
ROCKIES/PLAINS AND AN UPPER RIDGE OVER THE SOUTHWEST/SOUTHERN
ROCKIES, A BELT OF ENHANCED WESTERLY FLOW ALOFT WILL PERSIST ACROSS
THE GREAT BASIN AND CENTRAL ROCKIES/ADJACENT HIGH PLAINS THROUGH THE
DAY.
..EASTERN GREAT BASIN INTO THE CENTRAL ROCKIES/PLAINS
DIURNAL HEATING OF A DRY ANTECEDENT AIR MASS (WITH POOR OVERNIGHT
RECOVERIES) WILL RESULT IN DEEP BOUNDARY-LAYER MIXING THIS AFTERNOON
(RH IN THE SINGLY DIGITS TO LOWER/MIDDLE TEENS). WITHIN THE
DEEP/WELL-MIXED BOUNDARY LAYER, EFFICIENT DOWNWARD MOMENTUM
TRANSPORT OF THE ENHANCED FLOW ALOFT WILL YIELD A BROAD AREA OF
15-20 MPH SUSTAINED WESTERLY SURFACE WINDS (LOCALLY HIGHER OVER
TERRAIN-FAVORED AREAS). GIVEN CRITICALLY DRY FUELS ACROSS THE REGION
(90TH-95TH PERCENTILE ERCS), ELEVATED TO LOCALLY CRITICAL
FIRE-WEATHER CONDITIONS ARE EXPECTED.
FARTHER NORTH, STRENGTHENING MIDLEVEL WESTERLY FLOW IN THE BASE OF
THE TROUGH WILL OVERSPREAD A DEEPLY MIXED BOUNDARY LAYER IN THE
SNAKE RIVER PLAIN, RESULTING IN 10-15 PERCENT RH AND 15-20 MPH
SUSTAINED WESTERLY SURFACE WINDS. THESE DRY/BREEZY CONDITIONS ATOP
DRY/RECEPTIVE FUELS WILL PROMOTE ELEVATED FIRE-WEATHER CONDITIONS
DURING THE AFTERNOON.
..WEINMAN.. 06/12/2026
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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