737
FNUS21 KWNS 220700
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0159 AM CDT FRI AUG 22 2025
VALID 221200Z - 231200Z
..SYNOPSIS
AN EXPANSIVE MIDLEVEL RIDGE WILL REMAIN IN PLACE ACROSS MUCH OF THE
WEST, WHILE A WELL-ESTABLISHED MONSOONAL MOISTURE PLUME PERSISTS
ACROSS THE SOUTHWEST INTO THE GREAT BASIN.
..DRY THUNDERSTORMS
DIURNAL HEATING/BOUNDARY-LAYER MIXING AMID THE MONSOONAL MOISTURE
WILL YIELD SUFFICIENT BUOYANCY FOR ISOLATED TO WIDELY SCATTERED
THUNDERSTORMS ACROSS A BROAD REGION EXTENDING FROM THE SIERRA INTO
THE GREAT BASIN AND CENTRAL ROCKIES DURING THE AFTERNOON/EVENING.
INVERTED-V PROFILES, CHARACTERIZED BY 0.70 TO 0.90 INCH PW, WILL
FAVOR A MIX OF WET/DRY HIGH-BASED STORMS -- POSING A RISK OF
LIGHTNING-INDUCED IGNITIONS AND GUSTY/ERRATIC OUTFLOW WINDS OVER
DRY/RECEPTIVE FUELS.
..NORTH-CENTRAL OREGON
ALONG THE NORTHERN PERIPHERY OF SURFACE HIGH PRESSURE OVER THE
SOUTHWEST/GREAT BASIN, A MODEST OFFSHORE PRESSURE GRADIENT WILL
DEVELOP ACROSS THE NORTHWEST. AS A RESULT, BREEZY/GUSTY
EAST-NORTHEASTERLY SURFACE WINDS ARE EXPECTED AMID 15-PERCENT RH
ACROSS NORTH-CENTRAL OR, WITH LOCALLY ENHANCED WINDS EXPECTED
THROUGH THE COLUMBIA GORGE. GIVEN DRY FUELS, ELEVATED FIRE-WEATHER
CONDITIONS ARE EXPECTED.
..COASTAL NEW ENGLAND
ON THE FAR WESTERN FRINGES OF HURRICANE ERIN, DRY/BREEZY NORTHERLY
WINDS ATOP RECEPTIVE FUELS WILL FAVOR ELEVATED FIRE-WEATHER
CONDITIONS ACROSS COASTAL NEW ENGLAND DURING THE AFTERNOON.
..SOUTHERN CALIFORNIA
AN UNSEASONABLY HOT AND UNSTABLE AIR MASS ALONG WITH CRITICALLY DRY
FUELS WILL CONTINUE TO PROMOTE ELEVATED FIRE-WEATHER CONDITIONS AWAY
FROM THE COAST IN SOUTHERN CA, DESPITE ONLY MODEST SURFACE WINDS.
ADDITIONALLY, ISOLATED HIGH-BASED THUNDERSTORMS WILL POSE A
LOCALIZED RISK OF LIGHTNING-INDUCED IGNITIONS AND GUSTY/ERRATIC
WINDS AWAY FROM ANY HEAVIER RAIN CORES.
..WEINMAN.. 08/22/2025
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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