816
FNUS22 KWNS 300722
FWDDY2
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0221 AM CDT MON JUN 30 2025
VALID 011200Z - 021200Z
..SYNOPSIS
MID-LEVEL FLOW ACROSS THE CONUS SHOULD CONTINUE TO AMPLIFY AS THE
SUB-TROPICAL RIDGE OVER THE WEST GRADUALLY SHIFTS EASTWARD. THE
UPPER LOW ACROSS THE WEST COAST WILL INTENSIFY, SPREADING ENHANCED
FLOW ALOFT AND MONSOON MOISTURE OVER MUCH OF THE WEST. THE INCREASED
MOISTURE WILL SUPPORT DRY THUNDERSTORMS OVER THE NORTHWEST AND UT,
WHILE WARM AND BREEZY CONDITIONS WILL FAVOR ELEVATED FIRE-WEATHER
CONDITIONS OVER THE GREAT BASIN.
..CENTRAL GREAT BASIN
AS THE UPPER LOW OVER THE WEST INTENSIFIES, ENHANCED MID-LEVEL FLOW
WILL OVERSPREAD PARTS OF THE GREAT BASIN AND SOUTHWEST. ON THE
PERIPHERY OF THE BUILDING UPPER RIDGE, VERY WARM AND DRY CONDITIONS
ARE LIKELY. THE STRONGER SOUTHERLY MID-LEVEL FLOW OVER TOP THE
DRY/WELL-MIXED BOUNDARY LAYER WILL SUPPORT GUSTY SOUTHERLY WINDS
ACROSS CENTRAL/SOUTHERN NV TUESDAY. WIDESPREAD GUSTS OF 15-25 MPH
ARE EXPECTED, WITH RH VALUES BELOW 15%. AS AREA FUELS CONTINUING TO
DRY, ELEVATED TO LOCALLY CRITICAL FIRE-WEATHER CONDITIONS ARE
LIKELY.
..DRY THUNDERSTORMS
A SECOND DAY OF THUNDERSTORMS IS EXPECTED FROM NORTHERN CA INTO
SOUTHERN OR AND WESTERN ID TUESDAY. WEAK ASCENT FROM THE UPPER LOW,
COUPLED WITH NORTHWARD MOVING MONSOON MOISTURE WILL SUPPORT
SCATTERED STORMS THROUGH MUCH OF THE DAY. INCREASED STORM MOTIONS
AND, STEEP LOW-LEVEL LAPSE RATES WILL STILL FAVOR RELATIVELY POOR
PRECIPITATION EFFICIENCY. THIS SUGGESTS DRY LIGHTING IS AGAIN
POSSIBLE ACROSS THE NORTHERN COASTAL RANGES OF CA, EAST OF THE
CASCADES TO THE OR/ID BORDER.
ACROSS PARTS OF UT, THE INITIAL INFLUX OF DEEPER MONSOON MOISTURE
FROM THE UPPER-LEVEL TROUGH INTO THE INTERMOUNTAIN WEST WILL SUPPORT
ISOLATED THUNDERSTORMS ACROSS THE CENTRAL MOUNTAINS TUESDAY. WITH
PWAT VALUES OF 0.7-0.8 INCHES AND MODEST STORM SPEEDS, A MIXED MODE
OF WET AND DRY STORMS IS EXPECTED OVER THE HIGHER TERRAIN. VERY
RECEPTIVE FUELS (ERCS > 90TH PERCENTILE), SUGGEST DRY LIGHTNING
IGNITIONS ARE POSSIBLE OUTSIDE THE HEAVIER PRECIP CORE.
..LYONS.. 06/30/2025
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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