Fire Weather Outlook Discussion
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FNUS22 KWNS 260830
FWDDY2

DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0330 AM CDT FRI AUG 26 2016

VALID 271200Z - 281200Z

...CRITICAL FIRE WEATHER AREA FOR A PORTION OF FAR SRN WA...FAR NRN
ORE...

...SYNOPSIS...
IN THE MID LEVELS...BROADLY CYCLONIC FLOW WITH EMBEDDED DISTURBANCES
WILL CONTINUE TO OVERLIE PORTIONS OF THE WRN CONUS TO THE N-CNTRL
CONUS. A MORE PROMINENT CYCLONIC PERTURBATION IS FORECAST TO MOVE
EWD ACROSS PARTS OF WRN CANADA...WITH MID-LEVEL WLYS BECOMING
ENHANCED ACROSS PARTS OF THE NWRN CONUS ON ITS SRN PERIPHERY. THIS
SHOULD CONTRIBUTE TO ENHANCED FIRE-WEATHER CONDITIONS ACROSS PARTS
OF WA/ORE/ID/MT. ELSEWHERE...ELEVATED/CRITICAL FIRE-WEATHER
CONDITIONS ARE PRESENTLY UNLIKELY.

...PORTIONS OF CNTRL/SRN/ERN WA...NRN ORE...NRN ID...NRN/WRN MT...
THE AFOREMENTIONED ENHANCED MID-LEVEL FLOW IS FORECAST TO OVERLIE
THE REGION DURING PEAK HEATING. DIURNALLY STRENGTHENED VERTICAL
MIXING WILL MANIFEST THE ENHANCED FLOW ALOFT AT THE SFC...RESULTING
IN MODERATE TO STRONG AND GENERALLY WSWLY TO WLY WINDS.
FURTHERMORE...STRONG SFC HEATING...COMBINED WITH AREAS OF
DOWNSLOPE-FLOW-ENCOURAGED WARMING/DRYING...SHOULD ALLOW RH VALUES TO
FALL SUFFICIENTLY LOW IN SUPPORT OF AN INCREASED FIRE-WEATHER RISK.

AT THIS TIME...LOCAL-FLOW CHANNELING IN PROXIMITY TO THE COLUMBIA
RIVER VALLEY AND VICINITY IS FORECAST TO YIELD A RELATIVE MAXIMUM IN
WIND SPEEDS -- AFFECTING A PORTION OF FAR SRN WA AND FAR NRN ORE.
SUSTAINED WINDS OF 20-25 MPH ARE FORECAST TO COMBINE WITH MINIMUM RH
AROUND 17-20 PERCENT AMIDST DRY FUELS WARRANTING CRITICAL
DESIGNATION IN THIS AREA.

ELSEWHERE ACROSS THE REGION...ELEVATED FIRE-WEATHER CONDITIONS ARE
ANTICIPATED...THOUGH SUSTAINED WINDS ARE NOT EXPECTED TO EXCEED
15-20 MPH WHERE CRITICALLY LOW RH VALUES OCCUR. BORDERLINE-CRITICAL
FIRE-WEATHER CONDITIONS COULD AFFECT A SMALL PORTION OF N-CNTRL MT
WITHIN THE DOWNSLOPE-FLOW PATTERN OFF THE NRN ROCKY MOUNTAIN
FRONT...THOUGH ANY CRITICAL RISK SHOULD BE BRIEF/SPOTTY.

..COHEN.. 08/26/2016

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

$$



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