Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 270921
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0321 AM CST FRI FEB 27 2009
VALID 271200Z - 281200Z
...CRITICAL FIRE WEATHER AREA FOR PARTS OF NERN AND E-CNTRL NM...
...SYNOPSIS...
EARLY MORNING SATELLITE IMAGERY SHOWS AN UPPER LOW RAPIDLY MOVING
EWD ACROSS THE GREAT LAKES AND A SURFACE COLD FRONT IS PUSHING E
ACROSS THE OH/MS VALLEY REGIONS. SURFACE HIGH PRESSURE AND COOLER
TEMPS WILL MOVE IN BEHIND THE DEPARTING SYSTEM OVER THE GREAT LAKES.
ON ITS HEELS...A POTENT H5 CLOSED LOW/SHORTWAVE TROUGH WILL MOVE
SEWD FROM WY TO THE CNTRL PLAINS. AHEAD OF THIS FEATURE...A
DOWNSLOPING REGIME AND RELATIVELY WARM WEDGE CONFINED TO A LEE SIDE
TROUGH WILL PROMOTE ENHANCED FIRE WEATHER CONDITIONS OVER PARTS OF
SERN CO/NERN AND E-CNTRL NM NEAR AND E OF THE I-25 CORRIDOR.
FURTHER SE...RELATIVELY DRY RECYCLED/MODIFIED POLAR AIRMASS OVER FL
WILL LEAD TO A PERIOD OF LOWER RH DURING PEAK HEATING OVER PARTS OF
THE WRN HALF OF THE CNTRL PORTION OF THE FL PENINSULA.
...CRITICAL FIRE WEATHER AREA - PARTS OF NERN AND E-CNTRL NM...
PRIMARY CONDITIONS: STRONG WINDS / LOW RH
A LOW LEVEL THERMAL RIDGE/LEE-SIDE TROUGH WILL DEVELOP IN RESPONSE
TO APPROACHING UPPER TROUGH. SW MOVING COLD FRONT OVER THE CNTRL
HIGH PLAINS WILL INTERSECT A SURFACE LOW INVOF CO/NM BORDER REGION
WITH UNFAVORABLE FIRE WEATHER CONDITIONS BEHIND THE FRONT. WITHIN
THE DOWNSLOPE PRONE AREAS...HIGHER MOMENTUM FLOW WILL SPILL OVER THE
ROCKIES CREATING SUSTAINED WINDS AROUND 20-25 MPH WITH GUSTS
EXCEEDING 30 MPH AT TIMES. DESPITE SOMEWHAT MARGINAL HIGH TEMPS IN
THE 60S...SUFFICIENT BOUNDARY LAYER MIXING WILL LIKELY YIELD RH
VALUES AOB 15 PERCENT.
...SERN CO...
SLIGHTLY COOLER CONDITIONS THAN AREAS FURTHER S IN NM WILL PROBABLY
LIMIT MIN RH VALUES FROM FALLING BELOW 15 PERCENT WITHIN LOW LEVEL
THERMAL RIDGE TO THE LEE OF THE MTNS. PRIMARY FACTORS PRECLUDING A
CRITICAL AREA ATTM ARE BASED ON...1) UNCERTAINTY REGARDING THE
LOCATION OF SURFACE COLD FRONT/ELY FLOW--WHICH WILL HAVE AN
INFLUENCING IMPACT ON MAGNITUDE OF RH VALUES AND 2) EXPECTED SHORT
DURATION OF POTENTIALLY CRITICAL RH.
..SMITH.. 02/27/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 270957
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0357 AM CST FRI FEB 27 2009
VALID 281200Z - 011200Z
...CRITICAL FIRE WEATHER AREA FOR LARGE PART OF CNTRL AND S TX...
...SYNOPSIS...
UPPER CLOSED LOW/SHORTWAVE TROUGH OVER THE CNTRL PLAINS WILL DIG
SEWD ON BACKSIDE OF ERN U.S. TROUGH AS UPPER RIDGING OCCURS OVER THE
WRN U.S. A COLD FRONT WILL PUSH THROUGH PARTS OF THE SERN U.S. WITH
HIGH PRESSURE SETTLING INTO MUCH OF THE CNTRL U.S. AND MID SOUTH.
STRONG GUSTY WINDS ON THE BACKSIDE OF THE TROUGH OVER PARTS OF TX
CONCURRENT WITH LOW RH WILL RESULT IN A SEEMINGLY FAVORABLE SCENARIO
FOR FIRE WEATHER CONDITIONS OVER A LARGE PART OF TX.
...CRITICAL FIRE WEATHER AREA - LARGE PART OF CNTRL AND S TX...
PRIMARY CONDITIONS: STRONG WINDS / LOW RH / EXCEPTIONAL DROUGHT
STRONG MID-LEVEL FLOW /50-70 KTS/ WILL MOVE OVERHEAD DURING THE AFTN
HOURS IN ASSOCIATION WITH THE UPPER TROUGH. DESPITE COOLER TEMPS
/UPPER 50S TO 60S F/ INFILTRATING MUCH OF THE SRN PLAINS D2 IN
POST-FRONTAL AIRMASS...A STRONG SURFACE PRESSURE GRADIENT WILL
RESULT IN SUSTAINED NW-NLY WINDS /20-30 MPH/ WITH LOCALIZED GUSTS
APPROACHING 40 MPH. MODEL GUIDANCE IS IN AGREEMENT IN DENOTING A
RELAXING PRESSURE GRADIENT BY THE EVENING HOURS. DRY UPSTREAM
CONTINENTAL TRAJECTORIES WILL SUPPORT THE NOTION BY FORECAST
SOUNDINGS AND LATEST SREF OUTPUT IN SUGGESTING RH WILL LIKELY FALL
INTO THE TEENS/20S DURING PEAK HEATING WITH GRADUAL RECOVERY
EXPECTED DURING THE EVENING HRS.
..SMITH.. 02/27/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...