Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks
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FNUS21 KWNS 210943
STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK
400 AM CST TUE JAN 21 2003
DAY 1 FIRE WEATHER OUTLOOK...REF AWIPS GRAPHIC PMWE98 KWNS
VALID 211200-221200
...NO LARGE-SCALE SIGNIFICANT FIRE WEATHER CONDITIONS EXPECTED...
...SYNOPSIS...
LARGE-SCALE SPLIT FLOW PATTERN PROGGED TO EVOLVE THRU FCST PERIOD
AS WNWLY POLAR BRANCH CONTINUES TO YIELD COLD CONDITIONS ACROSS THE
NRN TIER INTO MUCH OF THE ERN U.S. WHILE MUCH WEAKER SUBTROPICAL
BRANCH STAYS ACROSS THE SRN TIER INTO THE SERN STATES. SUBTROPICAL
SHORTWAVE IMPULSE PROGGED TO ADVANCE EWD FROM NM/AZ TO AL/MS BY
22/12Z WHILE NEXT SHORTWAVE TROUGH HEADS QUICKLY FROM CA/ORE SEWD
INTO FOUR CORNERS REGION AHEAD OF BUILDING WEST COAST RIDGE. STRONG
CANADIAN COLD FRONTAL BOUNDARY IS EXPECTED TO STRETCH FROM THE NRN
ROCKIES...SSEWD THRU THE LEE REGION...EWD THRU SCNTRL TX...EWD THRU
THE SERN STATES BY 22/00Z SEPARATING MILDER PACIFIC AIR AND MUCH
COLDER CANADIAN AIRMASS.
...SERN NM/WRN TX...
JUST AHEAD OF A SLOW MOVING/STATIONARY COLD FRONTAL BOUNDARY...
ANOTHER DAY OF ABOVE AVERAGE TEMPERATURES...BRISK WLY COMPONENT
WINDS...AND MARGINALLY LOW RH VALUES IS EXPECTED TO AFFECT SERN NM
AND WRN TX. DESPITE THE EWD TRANSLATION OF A SHORTWAVE IMPULSE INTO
THE LOWER MS VALLEY...MODERATELY STRONG MID-LVL DOWNSLOPE FLOW WILL
CONTINUE TO YIELD A WINDY /WNWLY 15-25 MPH/ WARM...AND DRY BOUNDARY
LAYER TODAY. HIGH TEMPERATURES WILL RANGE FROM NEAR 60 IN ELEVATED
AREAS TO THE LOW-MID 70S IN THE ADJACENT PLAINS WITH MINIMUM RH
VALUES FROM AROUND 20-30 PERCENT. HOWEVER...WITH THE STRONGER WIND
REGIME TO BE MAINLY LIMITED TO THE MRNG/EARLY AFTERNOON HOURS AND
THE MARGINALITY OF THE EXPECTED LOW-LVL RH VALUES...A CRITICAL AREA
WILL NOT BE ISSUED. DESPITE NON-ISSUANCE...SOME LOCALIZED CRITICAL
LEVEL FIRE WX CONDITIONS ARE LIKELY.
...SRN/SCNTRL FL...
ON THE BACKSIDE OF A SFC ANTICYCLONE SOME DRIER AIR IS EXPECTED TO
LINGER IN PARTS OF SRN AND SCNTRL FL DURING THE PERIOD /MINIMUM RH
30-35 PERCENT/...HOWEVER RATHER WEAK WINDS WILL PRECLUDE ANY
SERIOUS FIRE WX CONCERNS.
..NADEN.. 01/21/03
SPC FIRE WEATHER OUTLOOKS ARE AVAILABLE AT WWW.SPC.NOAA.GOV/FIRE
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ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 211023
STORM PREDICTION CENTER...NWS/NCEP...NORMAN OK
400 AM CST TUE JAN 21 2003
DAY 2 FIRE WEATHER OUTLOOK...REF AWIPS GRAPHIC PMWI98 KWNS
VALID 221200-231200
...NO LARGE-SCALE SIGNIFICANT FIRE WEATHER CONDITIONS EXPECTED...
...SYNOPSIS...
PACIFIC COAST MID-UPPER LVL RIDGE PROGGED TO WEAKEN AND MOVE INTO
THE INTERIOR WEST AS SEVERAL SHORTWAVE IMPULSES SURGE INLAND FROM
THE ERN PACIFIC DURING THE PERIOD. FURTHER EAST...ANOTHER SHORTWAVE
TROUGH TO TRANSLATE FROM THE AZ/NM REGION...ESEWD THRU TX...INTO
THE GULF OF MEXICO BY 23/12Z AS MUCH COLDER AIR ASSOCIATED WITH A
1045 SFC HIGH PRESSURE AREA MOVES INTO THE NRN PLAINS. A REGION OF
BRISK WNWLY WINDS IS EXPECTED TO AFFECT THE SERN NM/WRN TX AREA
DURING THE EARLY PORTION OF THE FCST PERIOD...BUT WINDS WILL WEAKEN
AS THE AFOREMENTIONED SHORTWAVE TROUGH MOVES SEWD INTO SRN TX.
SOUTH OF THE PRIMARY COLD FRONTAL BOUNDARY...PARTS OF SRN/SCNTRL FL
WILL AGAIN EXPERIENCE DRY BOUNDARY LAYER CONDITIONS...BUT THE LACK
OF A SIGNIFICANT WIND REGIME WILL AGAIN PRECLUDE THESE AREAS FROM
ANY CRITICAL CONSIDERATION.
..NADEN.. 01/21/03
SPC FIRE WEATHER OUTLOOKS ARE AVAILABLE AT WWW.SPC.NOAA.GOV/FIRE
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