695
FNUS21 KWNS 270816
FWDDY1
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0215 AM CST FRI NOV 27 2009
VALID 271200Z - 281200Z
..NO CRITICAL AREAS
..SYNOPSIS
AN UPPER-LEVEL TROUGH FROM THE GREAT LAKES TO THE MID-ATLANTIC WILL
SHIFT EAST TOWARDS THE CANADIAN MARITIMES AND OFF THE ERN SEABOARD.
IN THE WEST...AN UPPER-LEVEL SHORT WAVE TROUGH OFF THE PACIFIC
NW/NRN CA COAST WILL DIG TOWARDS SRN CA. WEAK RIDGING WILL PERSIST
OVER MOST OF THE CNTRL CONUS WHILE A SRN STREAM IMPULSE EJECTS EWD
ACROSS THE SRN PLAINS.
..FL
LATEST GPS PW VALUES AROUND A QUARTER-INCH WERE COMMON ACROSS NRN
FL. THIS TYPE OF AIR MASS WILL CONTINUE TO SPREAD SWD WITHIN A
POST-FRONTAL REGIME AND RESULT IN PERVASIVE LOW RH ACROSS MUCH OF
THE PENINSULA THIS AFTERNOON. DESPITE BELOW-NORMAL TEMPERATURES IN
THE 60S...RH VALUES SHOULD DROP TO BETWEEN 20 AND 30 PERCENT. MODEST
SUSTAINED NWLY SURFACE WINDS FROM 8 TO 15 MPH WILL MITIGATE A
CRITICAL AREA ISSUANCE.
..E-CNTRL NM...PANHANDLE/NW TX...FAR WRN OK
AS A LEE SURFACE TROUGH DEEPENS...SWLY WINDS SHOULD BECOME MODERATE
/AROUND 15 MPH/ DURING THE AFTERNOON. WITH A DRY AIR MASS IN PLACE
ALONG WITH THE CONTRIBUTING EFFECTS OF DOWNSLOPE FLOW...RH VALUES
WILL LIKELY FALL TO 10 TO 20 PERCENT AS TEMPERATURES WARM INTO THE
UPPER 60S TO LOWER 70S.
..GRAMS.. 11/27/2009
..PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT
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