FXUS62 KJAX 070135
AFDJAX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
835 PM EST SUN DEC 6 2009

.UPDATE...INVERTED TROUGH OFFSHORE NE FL WILL MOVE NORTH TO
OFFSHORE SE GA TONIGHT. LOW LEVEL CONVERGENCE COUPLED WITH A WEAK
SHORT WAVE MOVING THROUGH MAY PRODUCE ENOUGH LIFT TO PRODUCE A FEW
SHOWERS PRIMARILY OFFSHORE...AND A FEW SPRINKLES ALONG THE COAST.
THE 00Z JAX SOUNDING SHOWING A SHARP INVERSION ABOVE 850 MB...A
NEARLY SATURATED LAYER BELOW THE INVERSION....AND A VEERING LOW
LEVEL WIND PROFILE. THIS WILL ALL LEAD TO WIDESPREAD LOW CLOUDS
AND FOG FOR THE OVERNITE HOURS. APPEARS THERE WILL BE JUST ENOUGH
CLOUD COVER AND MIXING TO HELP MINIMIZE THE WIDESPREAD FOG POTENTIAL.
HOWEVER...MAY STILL HAVE A FEW PATCHES OF DENSE FOG IN SOME AREAS.
CURRENT FORECAST/GRIDS ON TRACK WITH NO MAJOR CHANGES PLANNED.

&&

.AVIATION...THE 00Z JAX SOUNDING SHOWING A NEARLY SATURATED LAYER 
BELOW A SHARP INVERSION AT 850 MB. CONDITIONS ARE FAVORABLE FOR
WIDESPREAD LOW CLOUDS AND FOG AT ALL TERMINALS TONIGHT. WILL
BEGIN PREVAILING IFR AT ALL TERMINALS AT 02Z-04Z AND TEMPO 
LIFR BETWEEN 08Z-12Z. 

&&

.MARINE...CURRENT OBS INDICATE WINDS ARE NORTH 15 KNOTS NEAR 
SHORE AND NE-E 15 TO 20 KNOTS OFFSHORE. STRONGEST WINDS ARE JUST
NORTH OF THE AREA. AS THE INVERTED TROUGH LIFTS NORTH TONIGHT...
WINDS WILL GRADUALLY WEAKEN. WILL KEEP THE EXERCISE CAUTION 
GOING OFFSHORE FOR PART OF THE NIGHT WITH A GRADUAL DECREASE 
IN WINDS.

&&

.PRELIMINARY POINT TEMPS/POPS...
AMG  43  67  47  67 /  10   0  10  30 
SSI  49  66  53  68 /  10   0  10  20 
JAX  48  70  53  73 /  10  10  10  20 
SGJ  56  70  59  73 /  10  10  10  20 
GNV  49  73  54  75 /  10  10  10  30 
OCF  51  74  55  77 /  10  10  10  30 

&&

.JAX WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GA...NONE.
AM...NONE.

&&

$$

PP/JH/PK