Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 060730
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0230 AM CDT SUN SEP 06 2009
VALID 061200Z - 071200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
AN UPPER LEVEL TROUGH IS FORECAST TO ENTER THE PAC NW ON
SUNDAY...AND WILL BE ACCOMPANIED BY INCREASING WIND SPEEDS ALOFT AND
A COLD FRONT ADVANCING EWD ACROSS THE NRN ROCKIES AND INTO THE NRN
HIGH PLAINS. NEAR CRITICAL FIRE WEATHER CONDITIONS WILL BE POSSIBLE
OVER SRN/ERN MT AND NRN WY AS GUSTY WINDS DEVELOP AHEAD OF THE FRONT
AND A WARM/DRY LOW LEVEL AIRMASS DEVELOPS. STRENGTHENING WINDS ALOFT
WILL ALSO SPREAD E ACROSS PORTIONS OF THE GREAT BASIN...AND MAY LEAD
TO A PERIOD OF ELEVATED FIRE WEATHER CONDITIONS OVER ERN NV/WRN UT.
...SRN/ERN MT AND NRN WY...
DEEP BOUNDARY LAYER MIXING IS INDICATED IN MODEL FORECAST SOUNDINGS
ACROSS MUCH OF SRN/ERN MT INTO NRN WY BY SUNDAY AFTERNOON. AS LOW
LEVEL LAPSE RATES STEEPEN AND A WEAK UPPER LEVEL IMPULSE MOVES E
ACROSS THE REGION...GUSTY WINDS UP TO 30 MPH ARE EXPECTED WITH
SUSTAINED WIND SPEEDS NEAR 20 MPH. THE GUSTY WINDS WILL COMBINE WITH
AFTERNOON RH VALUES NEAR 20 PERCENT...RESULTING IN MARGINAL CRITICAL
FIRE WEATHER CONDITIONS. FORECAST SOUNDINGS ALSO INDICATE INVERTED-V
THERMODYNAMIC PROFILES WITH SUFFICIENT INSTABILITY FOR HIGH BASED
THUNDERSTORM DEVELOPMENT. DUE TO THE LOW THUNDERSTORM COVERAGE
CURRENTLY ANTICIPATED...A CRITICAL AREA WILL NOT BE ASSIGNED FOR
THIS SCENARIO...ALTHOUGH ISOLATED FIRE STARTS WILL CERTAINTY BE A
POSSIBILITY DUE TO LIGHTNING STRIKES. DURING THE OVERNIGHT
PERIOD...A STRONG COLD FRONT WILL MOVE E ACROSS THE AREA...WITH
WINDS SHIFTING TO WNWLY AND POSSIBLY INCREASING IN SPEED ABRUPTLY.
ALTHOUGH RH VALUES ARE EXPECTED TO RECOVER WITHIN THE POST FRONTAL
AIRMASS...ANY ONGOING FIRES COULD BEHAVE ERRATICALLY WITH THE
FRONTAL PASSAGE.
...ERN NV AND WRN UT...
PORTIONS OF ERN NV AND WRN UT WILL RESIDE ALONG THE SRN FRINGE OF A
STRONG UPPER LEVEL JET POSITIONED OVER THE PAC NW. AS A
RESULT...GUSTY WINDS /POSSIBLY AS HIGH AS 30 MPH/ WILL BE POSSIBLE
AS LOW LEVEL LAPSE RATES STEEPEN WITH DAYTIME HEATING. RH VALUES
WILL LIKELY FALL BELOW 20 PERCENT AS WELL...LEADING TO ELEVATED FIRE
WEATHER CONDITIONS ACROSS THE REGION.
..GARNER.. 09/06/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 060731
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0231 AM CDT SUN SEP 06 2009
VALID 071200Z - 081200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
A SHORTWAVE TROUGH IS FORECAST TO EJECT ENEWD ACROSS THE FAR
NWRN/N-CENTRAL CONUS ON MONDAY. MEANWHILE...AN ASSOCIATED SURFACE
COLD FRONT WILL BECOME POSITIONED FROM THE NRN PLAINS SWWD INTO THE
GREAT BASIN OF UT. AS THE COLD FRONT SAGS SWD...A WARM/DRY LOW LEVEL
AIRMASS WILL BE SHUNTED AWAY FROM THE MORE ENERGETIC NRN FLOW
REGIME...RESULTING IN A LOW PROBABILITY FOR CRITICAL FIRE WEATHER
CONDITIONS.
..GARNER.. 09/06/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...