Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 010755
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0255 AM CDT TUE SEP 01 2009
VALID 011200Z - 021200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
RESILIENT SWRN U.S. ANTICYCLONE WILL AGAIN FAVOR WARM/HOT TEMPS OVER
PARTS OF THE WRN CONUS AS SURFACE HIGH PRESSURE AND LARGE SCALE
TROUGHING AFFECT THE MIDWEST AND ERN SEABOARD. TROPICAL CYCLONE
IGNACIO REMNANTS INITIALLY OVER ORE THIS MORNING WILL MOVE INTO
BRITISH COLUMBIA WITH ANOTHER IMPULSE FOLLOWING CLOSELY BEHIND IN
ITS WAKE ON ERN SIDE OF ERN PACIFIC CYCLONIC VORTEX. SHORTWAVE
RIDGING WILL OCCUR OVER THE NRN GREAT BASIN LEADING TO WARMER TEMPS.
FURTHER E...A CLOSED LOW/SHORTWAVE TROUGH OVER MT WILL SHIFT EWD
INTO THE DAKOTAS. VERY WARM TEMPS ARE AGAIN EXPECTED OVER PARTS OF
SRN CA ALTHOUGH SOME SLIGHT IMPROVEMENT IN MIN RH IS ANTICIPATED.
...NWRN GREAT BASIN...
WEAKENING LOW-MID LEVEL FLOW/RISING HEIGHTS WILL OCCUR AS UPPER
IMPULSE TO THE NW MOVES AWAY FROM THE REGION. SHORT DURATION
SUSTAINED WINDS AROUND 20 MPH WINDS ARE EXPECTED WITH HIGHER GUSTS
AS THE BOUNDARY LAYER WARMS RESULTING IN DEEPER MIXING. TEMPS ARE
EXPECTED TO BE WARMER WITH RH IN THE 15-20 PERCENT DURING PEAK
HEATING FAVORING LOCALIZED CRITICAL CONDITIONS.
...SRN WY...
AS MODEST BELT OF LOW TO MID-LEVEL WLYS GLANCES THE REGION IN
ASSOCIATION WITH ERN MT SHORTWAVE TROUGH...MODERATELY STRONG
SUSTAINED SURFACE WINDS /NEARING 20 MPH WITH HIGHER GUSTS/ WITHIN
ELEVATED MIXED LAYER PLUME WILL DEVELOP W OF MOIST AXIS. SEASONABLY
WARM TEMPS AND A NEARLY DRY ADIABATIC 0-3 KM AGL LAPSE RATES MAY
RESULT IN MIN RH AROUND 15 PERCENT AND SUPPORT AN ELEVATED FIRE
WEATHER THREAT.
..SMITH.. 09/01/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 010859
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0359 AM CDT TUE SEP 01 2009
VALID 021200Z - 031200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
STRONG SHORTWAVE TROUGH WILL MOVE ONSHORE THE PACIFIC NW WEDNESDAY
NIGHT AS AN ANTICYCLONE REMAINS OVER THE DESERT SW. STRENGTHENING
KINEMATIC FIELDS IN ASSOCIATION WITH APPROACHING PACIFIC NW
SHORTWAVE TROUGH WILL OVERSPREAD PARTS OF NRN CA NEWD INTO THE NRN
ROCKIES. AN ANTECEDENTLY DRY AIRMASS OVER THE NWRN GREAT BASIN WILL
COMBINE WITH STRONG WINDS LEADING TO AN ENHANCED FIRE WEATHER THREAT
OVER PORTIONS OF CA/NV/ORE.
...NERN CA / S-CNTRL ORE / EXTREME NWRN NV...
AS THE SYSTEM APPROACHES FROM THE W...SSWLY WINDS WILL STRENGTHEN
DURING THE DAY. SOME MODEL GUIDANCE INDICATE SUSTAINED WINDS MAY BE
AS STRONG AS 20-30 MPH WITH GUSTS UP TO 40 MPH. DESPITE SUFFICIENT
BOUNDARY LAYER MIXING OWING TO A STEEP LAPSE RATE
ENVIRONMENT...MODEL FORECAST SOUNDINGS ONLY SHOW MARGINAL MIN RH
GENERALLY IN THE MID-UPPER TEENS TO LOWER 20S PERCENT RANGE BEFORE
DIURNAL COOLING OCCURS AND A PACIFIC COLD FRONT PUSHES EWD OVER THE
AREA IN THE EVENING HOURS. IF EITHER FORECAST MIN RH IS SLIGHTLY
LOWER OR STRENGTH/DURATION IS A STRONG AS THE RECENT MODEL RUNS FROM
THE NAM AND ETAKF...THEN AN UPGRADE TO CRITICAL MAY BE WARRANTED.
..SMITH.. 09/01/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...