Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 130737
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0137 AM CST FRI FEB 13 2009
VALID 131200Z - 141200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
COMPACT UPPER-LEVEL SHORT WAVE TROUGH OVER THE CNTRL HIGH PLAINS
SHOULD DAMPEN AS IT SLIDES TOWARDS LK MI THROUGH EARLY SAT. MODEST
SURFACE CYCLONE OVER THE TX PANHANDLE SHOULD REACH THE OZARK PLATEAU
BY 14/00Z. ATTENDANT PACIFIC COLD FRONT/EFFECTIVE DRY LINE WILL BE
DRAPED S/SWWD THROUGH ERN OK AND S-CNTRL TX...WHILE A SECONDARY
FRONTAL SURGE WILL ACCELERATE SWD INTO SRN OK AND THE TX PANHANDLE
IN THE LATE AFTERNOON. FARTHER EAST...AN INTENSE CYCLONE WILL REMAIN
ANCHORED ACROSS THE CANADIAN MARITIMES.
...NWRN TX/SWRN OK...
STRONG LOW-LEVEL WINDS WILL VEER TO THE W/NW THIS MORNING IN THE
WAKE OF A PACIFIC COLD FRONT SWEEPING EWD. HOWEVER...THEY WILL ABATE
RAPIDLY TOWARDS NOON AS THE PRESSURE GRADIENT RELAXES IN ADVANCE OF
A SECONDARY COLD FRONT APPROACHING FROM THE N. LATEST MODEL
FORECASTS HAVE TRENDED EARLIER WITH THIS WEAKENING TENDENCY AND THIS
WILL CURTAIL CRITICAL POTENTIAL DESPITE RH VALUES DROPPING TO 10 TO
15 PERCENT IN THE AFTERNOON. JUXTAPOSITION OF SUSTAINED SURFACE
WINDS OF 20 MPH WITH RH VALUES AOB 20 PERCENT SHOULD BE BRIEF.
...NC/SRN VA PIEDMONT AND COASTAL PLAIN...
LOW-LEVEL FLOW WILL BE WEAKER COMPARED TO THU...BUT THE BROAD
INFLUENCE OF AN INTENSE CYCLONE INVOF CANADIAN MARITIMES SHOULD
RESULT IN A MARGINAL FIRE WEATHER THREAT TODAY. MODERATELY DEEP
MIXING WILL SUPPORT SUSTAINED SURFACE WINDS NEAR 15 MPH AT PEAK
HEATING. ALTHOUGH TEMPERATURES SHOULD BE A FEW DEGREES COOLER
/MAINLY IN THE 60S/...RH VALUES SHOULD FALL TO BETWEEN 20 AND 25
PERCENT.
..GRAMS.. 02/13/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 130843
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0243 AM CST FRI FEB 13 2009
VALID 141200Z - 151200Z
...CRITICAL FIRE WEATHER AREA FOR SERN NM...FAR WRN TX...
...SYNOPSIS...
AN UPPER-LEVEL IMPULSE EMBEDDED WITHIN LARGER-SCALE TROUGH ALONG THE
WEST COAST WILL EJECT EWD...REACHING THE FOUR CORNERS SAT MORNING
AND PROGRESSING INTO THE CNTRL PLAINS BY EVENING. ATTENDANT
MID-LEVEL JET STREAK SHOULD CROSS THE SRN ROCKIES AROUND 14/18Z. AT
THE SURFACE...A SHARP DRY LINE SHOULD PUSH EWD INTO WRN TX SAT
AFTERNOON.
...CRITICAL FIRE WEATHER AREA - SERN NM...FAR WRN TX...
PRIMARY CONDITIONS: STRONG WINDS / LOW RH / LONG-TERM DRYNESS
LOW/MID-LEVEL WLYS WILL STRENGTHEN LATE DAY 1 INTO EARLY DAY 2 IN
RESPONSE TO AN APPROACHING UPPER-LEVEL IMPULSE. THIS DOWNSLOPE FLOW
REGIME WILL PROVE FAVORABLE FOR THE DEVELOPMENT OF A WELL-MIXED
BOUNDARY LAYER SAT AFTERNOON WITH WIDESPREAD SUSTAINED SURFACE WINDS
OF 20 TO 25 MPH. ALTHOUGH TEMPERATURES SHOULD NOT BE PARTICULARLY
WARM /GENERALLY IN THE 60S TO LOWER 70S/...A VERY DRY ANTECEDENT AIR
MASS /CHARACTERIZED BY PW VALUES OF 0.10 TO 0.15 INCHES/ WILL
SUPPORT RH VALUES OF 8 TO 12 PERCENT. MODEL FORECASTS CONTINUE TO
VARY /ALBEIT INCREASINGLY MORE SUBTLE/ WITH THE TIMING OF THE
UPPER-LEVEL IMPULSE AND THIS HAS IMPLICATIONS FOR THE PLACEMENT OF
THE DRY LINE DURING THE AFTERNOON. NEVERTHELESS...HAVE EXPANDED THE
CRITICAL AREA E/NEWD IN FAVOR OF THE SLIGHTLY FASTER 13/00Z
ECMWF/GFS COMPARED TO THE SLOWER NAM.
..GRAMS.. 02/13/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...