Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 191155
DAY 1 FIRE WEATHER OUTLOOK CORR 1
NWS STORM PREDICTION CENTER NORMAN OK
0655 AM CDT TUE SEP 19 2006
VALID 191200Z - 201200Z
CORRECTED FOR GRAPHIC LINE
...CRITICAL FIRE WEATHER AREA FOR MUCH OF NV...SWRN UT...NWRN
AZ...PORTIONS OF ERN CA...
...SYNOPSIS...
LARGE UPPER-LEVEL TROUGH ACROSS THE MS RIVER VALLEY WILL MOVE EWD
AND APPROACH THE ERN SEABOARD BY WEDNESDAY MORNING...WITH RIDGING
ACROSS MUCH OF THE GREAT PLAINS. ANOTHER UPPER-LEVEL TROUGH ACROSS
THE PACIFIC NW COAST WILL AMPLIFY SEWD INTO THE NRN GREAT BASIN. AT
THE SURFACE...A COLD FRONT WILL PUSH SEWD ACROSS MUCH OF ID AND NRN
NV BY EARLY EVENING...WITH STRONG SWLY WINDS OUT AHEAD OF IT.
...CRITICAL FIRE WEATHER AREA - MUCH OF NV...WRN UT...NWRN
AZ...PORTIONS OF ERN CA...
PRIMARY CONDITIONS: STRONG WINDS / LOW RH / SHORT-TERM DRYNESS
A RELATIVELY LARGE AREA OF CRITICAL CONDITIONS SHOULD DEVELOP THIS
AFTERNOON AND EARLY EVENING AS SURFACE WINDS INCREASE IN RESPONSE TO
STRONGER MID-LEVEL FLOW AND A STRENGTHENING PRESSURE GRADIENT. A DRY
AIR MASS IS ALREADY IN PLACE AND CRITICALLY LOW RH OF 8 TO 15
PERCENT SHOULD BE WIDESPREAD BY LATE THIS AFTERNOON OVER ALL BUT
NRN/CNTRL NV. HERE...INCREASING MID-LEVEL CLOUDS WILL LIMIT
INSOLATION AND RH VALUES SHOULD FALL TO AROUND 15 TO 20
PERCENT...PRIOR TO A COLD FRONT PASSAGE. HOWEVER...THE STRONGEST
SURFACE WINDS WILL LIKELY OCCUR HERE AS MID-LEVEL FLOW OF 60 TO 70
MPH SPREADS SEWD. STEEP LOW-LEVEL LAPSE RATES WILL HELP MIX THESE
STRONG WINDS ALOFT TOWARDS THE SURFACE...WITH SUSTAINED SPEEDS OF 25
TO 30 MPH AND GUSTS NEAR 40 MPH. FURTHER S...SUSTAINED WINDS OF 20
TO 25 MPH SHOULD BE COMMON IN THE LATE AFTERNOON/EARLY EVENING AS
LOW/MID-LEVEL FLOW INCREASES AHEAD OF THE UPPER-LEVEL TROUGH AND
ASSOCIATED COLD FRONT. POOR RH RECOVERIES ARE EXPECTED THROUGH MUCH
OF TONIGHT ACROSS FAR SRN NV/NWRN AZ/SWRN UT AS MODERATE SWLY WINDS
CONTINUE AHEAD OF THE FRONT.
..GRAMS.. 09/19/2006
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 190915
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0415 AM CDT TUE SEP 19 2006
VALID 201200Z - 211200Z
...CRITICAL FIRE WEATHER AREA FOR NRN AZ...FAR SRN UT...FAR NWRN
NM...
...SYNOPSIS...
POTENT UPPER-LEVEL TROUGH OVER THE NRN GREAT BASIN SHOULD CONTINUE
TO MOVE SEWD...REACHING THE CNTRL PLAINS BY THURSDAY MORNING. STRONG
MID-LEVEL WINDS WILL SPREAD EWD ALONG THE SRN FLANK OF THE TROUGH
FROM THE FOUR CORNERS AREA. AT THE SURFACE...RAPID CYCLOGENESIS WILL
BE INDUCED LATE WEDNESDAY ACROSS ERN CO INTO WRN KS...WITH A COLD
FRONT CONTINUING TO PUSH SEWD INTO THE CNTRL/SRN HIGH PLAINS.
MODERATE TO STRONG WINDS WILL OCCUR OVER A LARGE PORTION OF THE FOUR
CORNERS/SRN ROCKIES AND CNTRL/SRN PLAINS. HOWEVER...CRITICALLY LOW
RH SHOULD BE CONFINED SW OF THE UPPER-LEVEL TROUGH AXIS.
...CRITICAL FIRE WEATHER AREA - NRN AZ...FAR SRN UT...FAR NWRN NM...
PRIMARY CONDITIONS: STRONG WINDS / MODERATE TO SEVERE DROUGHT / LOW
RH
STRONG AND GUSTY WINDS APPEAR QUITE LIKELY ON WEDNESDAY AFTER THE
PASSAGE OF AN UPPER-LEVEL TROUGH AND ASSOCIATED SURFACE COLD FRONT.
ALTHOUGH MODEL FORECASTS SHOW SOME DIFFERENCES IN THE AMOUNT OF
LOW/MID-LEVEL DRYING THAT WILL OCCUR IN THE COOLER AIR BEHIND THE
FRONT...IT APPEARS PLAUSIBLE THAT A PERIOD OF MARGINALLY LOW RH
AROUND 15 PERCENT SHOULD OCCUR DURING THE AFTERNOON. SUBSIDENCE
BEHIND THE TROUGH...ALONG WITH STEEPENING LOW-LEVEL LAPSE RATES
SHOULD LEAD TO OPTIMAL DOWNWARD MOMENTUM TRANSPORT DURING PEAK
HEATING. SUSTAINED WINDS SHOULD REACH 20 TO 30 MPH WITH HIGHER GUSTS
AROUND 40 MPH.
..GRAMS.. 09/19/2006
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...