FXUS64 KBMX 051736
AFDBMX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1136 AM CST SAT DEC 5 2009

.UPDATE...AVIATION DISCUSSION. 

&&

.DISCUSSION...

UPPER LEVEL TROUGH SWINGING EAST OF THE AREA THIS MORNING...AS 
SURFACE HIGH PRESSURE BUILDS ACROSS THE MISSISSIPPI RIVER 
NORTHEASTWARD INTO THE OHIO RIVER VALLEY. LOCALLY...PRECIPITATION 
HAS EXITED THE AREA...LEAVING CLOUD COVER ACROSS MUCH OF THE EASTERN 
HALF OF THE FORECAST AREA. TEMPERATURES HAVE RISEN ABOVE FREEZING AT 
MOST LOCATIONS TO THE MID TO UPPER 30S...WITH THE EXCEPTION BEING 
OUTLYING LOCATIONS IN THE EAST. 

NORTHERLY WINDS WILL CONTINUE TO ADVECT COLD DRY AIR INTO THE REGION 
TODAY. CLOUD COVER IS HANGING AROUND A BIT LONGER THAN EXPECTED BUT 
STRATUS IS SHOWING SIGNS OF BREAKING UP. MADE A FEW ADJUSTMENTS TO 
THE GRIDS...MAINLY TO CLOUD COVER AND HOURLY TEMP TRENDS. DESPITE 
CLEARING SKIES...NORTHERLY WINDS WILL KEEP TEMPERATURES COOL TODAY. 
STILL EXPECT LOCATIONS IN THE NORTH TO WARM INTO THE LOW 40S...AND 
LOCATIONS ACROSS THE SOUTH INTO THE MID 40S.

14

&&

.AVIATION...18Z TAF DISCUSSION.

CLOUDS HAVE BEEN SLOWER THAN CLEAR THAN EXPECTED. ALTHOUGH...WESTERN 
EDGE OF CLOUD COVER IS SHOWING SIGNS OF LIFTING AND BECOMING BROKEN 
ACROSS BHM...EET...AND MGM. WILL SHOW CLOUD DECK BECOMING SCATTERED 
THROUGH THE AFTERNOON ACCORDINGLY...WITH HEIGHTS REMAINING IN THE 
MVFR CATEGORY. WITH HIGH PRESSURE SITTING TO OUR WEST...WINDS WILL 
REMAIN NORTHERLY TODAY BEFORE DIMINISHING OVERNIGHT. 

14

&&

.BMX WATCHES/WARNINGS/ADVISORIES...NONE.

&&

$$