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000
FNUS28 KWNS 232145
FWDD38

DAY 3-8 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0445 PM CDT WED JUL 23 2014

VALID 251200Z - 311200Z

AT THE BEGINNING OF THE EXTENDED PERIOD...AN UPPER-LEVEL LOW WILL
MOVE EWD ACROSS THE SOUTHERN CANADIAN PRAIRIE PROVINCES...ACTING TO
DEAMPLIFY THE RIDGE OVER THE SRN ROCKIES.  THROUGH THE LATTER HALF
OF THE EXTENDED PERIOD...THE UPPER-LEVEL PATTERN WILL BECOME MORE
AMPLIFIED WITH A RIDGE BUILDING OVER THE WEST WHILE A TROUGH DEEPENS
OVER THE ERN CONUS.  THE PRIMARY FIRE WEATHER CONCERNS DURING THE
EXTENDED PERIOD WILL BE DRY AND WINDY CONDITIONS ACROSS CENTRAL
WY/MT AS THE UPPER LOW PASSES TO THE NORTH AND A WARMING/DRYING
TREND FOR THE PACIFIC NORTHWEST.

...STRONG WIND/LOW RH POTENTIAL...
ENHANCED FLOW ASSOCIATED WITH THE AFOREMENTIONED UPPER LOW WILL
RESULT IN CONTINUED BREEZY SURFACE CONDITIONS FROM PORTIONS OF THE
GREAT BASIN INTO WY AND MT ON FRIDAY /D3/.  GIVEN THE DRY AIRMASS
OVER THE REGION...BOUNDARY-LAYER MIXING WILL LEAD TO CRITICAL RH
VALUES AND ELEVATED FIRE WEATHER CONCERNS DURING THE AFTERNOON.  THE
JUXTAPOSITION OF CRITICAL WINDS AND RH ON FRIDAY /D3/ APPEARS MOST
LIKELY OVER PORTIONS OF NCNTRL MT AND SCNTRL WY.  ENHANCED MIDLEVEL
FLOW IN THE WAKE OF THE UPPER LOW WILL LINGER OVER WY/MT ON SATURDAY
/D4/...LEADING TO ANOTHER DAY OF DRY AND BREEZY CONDITIONS OVER SRN
WY.

...DRY THUNDERSTORM POTENTIAL...
AS AN UPPER-LEVEL RIDGE AMPLIFIES OVER THE WEST...WARMING AND DRYING
WILL OCCUR OVER THE PACIFIC NORTHWEST.  FOLLOWING THIS PERIOD ON
SUNDAY /D5/...MODELS/ENSEMBLES ARE IN DECENT AGREEMENT WITH THE
APPROACH OF A SHORTWAVE TROUGH TOWARD THE CA/ORE COAST.
DESTABILIZATION AHEAD OF THIS FEATURE IN THE PRESENCE OF
DEEP/WELL-MIXED BOUNDARY LAYERS WILL SUPPORT THE POTENTIAL FOR
ISOLATED DRY THUNDERSTORMS OVER NRN CA/WRN ORE.  ALTHOUGH THE
POTENTIAL FOR ISOLATED DRY THUNDERSTORMS MAY EXIST BEYOND SUNDAY
/D5/ ACROSS THE PACIFIC NORTHWEST AND NRN INTERMOUNTAIN
WEST/ROCKIES...PREDICTABILITY IS TOO LOW TO HIGHLIGHT AREAS AT THIS
TIME.

..JIRAK.. 07/23/2014

...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...



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