513
FNUS21 KWNS 070753
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0153 AM CST SAT NOV 07 2009
VALID 071200Z - 081200Z
..NO CRITICAL AREAS
..SYNOPSIS
A BROAD UPPER LEVEL TROUGH IS FORECAST TO ENTER THE W COAST ON
SATURDAY...WHILE AN UPPER LEVEL RIDGE AND SURFACE HIGH PRESSURE
REMAIN POSITIONED OVER THE SERN STATES. MEANWHILE...A BELT OF STRONG
WLY FLOW ALOFT WILL SPREAD EWD TOWARD THE GREAT BASIN AND THEN ARC
NEWD INTO ONTARIO. THESE WINDS MAY FAVOR GUSTY CONDITIONS OVER SRN
WY DURING THE AFTERNOON. FARTHER E...THE SURFACE HIGH OVER THE SERN
CONUS WILL CONTINUE TO MAINTAIN A DRY LOW LEVEL AIRMASS.
..SERN STATES
AN AXIS OF SURFACE HIGH PRESSURE IS FORECAST TO RESIDE EAST TO WEST
FROM SC INTO MS. ELY SURFACE WINDS ARE EXPECTED SOUTH OF THE HIGH
PRESSURE AXIS OVER FAR SRN MS/AL/GA AND FL...TRANSITIONING TO LIGHT
AND SLY TOWARDS THE N. THE ELY SURFACE WINDS WILL LIKELY BEGIN TO
TRANSPORT SLIGHTLY HIGHER MOISTURE CONTENT WWD FROM THE
ATLANTIC...BUT DEWPOINTS FOR LOCATIONS TO THE N OVER CENTRAL/NRN
MS/AL/GA INTO SC ARE FORECAST TO REMAIN LOW. THIS DRY AIRMASS WILL
YIELD RH VALUES FALLING THROUGH THE 30S WITH DAYTIME
HEATING...THOUGH LIGHT WIND SPEEDS BENEATH A MID LEVEL ANTICYCLONE
WILL PRECLUDE A CRITICAL FIRE WEATHER OUTLOOK FROM BEING ISSUED.
..SRN WY
A LOW LEVEL THERMAL AXIS IS FORECAST TO REDEVELOP NWD INTO WY IN THE
WAKE OF A FRONT MOVING THROUGH THE CENTRAL PLAINS. AS THE BOUNDARY
LAYER BECOMES WELL MIXED DURING THE AFTERNOON...MODERATE FLOW ALOFT
MAY PROMOTE 30-40 KT GUSTS OUT OF THE SW. HOWEVER...RELATIVELY COOL
TEMPERATURES...MARGINAL RH VALUES /AOA 20 PERCENT/...AND MARGINAL
FUEL CONDITIONS POINT TOWARD SUB-CRITICAL FIRE WEATHER CONDITIONS.
..GARNER.. 11/07/2009
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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