FXUS62 KTBW 160151
AFDTBW

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
851 PM EST TUE DEC 15 2009

.DISCUSSION...IR-SATELLITE IMAGERY CONTINUES TO SHOW A GOOD DEAL OF 
SEA FOG HUGGING THE COASTLINE FROM PINELLAS COUNTY NORTH AS WELL AS 
OVER THE CENTRAL AND NORTHERN NEAR AND OFFSHORE COASTAL WATERS EARLY 
THIS EVENING. SOME OF THIS FOG MAY IMPACT COASTAL LOCATIONS BETWEEN
SAINT PETERSBURG AND BAYPORT IN THE NEXT FEW HOURS...OTHERWISE AS THE
FRONT CURRENTLY OVER THE PANHANDLE CONTINUES TO MOVE SOUTHEAST A WIND
SHIFT INTO THE NORTH AND NORTHEAST WITH INCREASING SPEEDS SHOULD BEGIN
TO SCOUR OUT THE FOG LATER TONIGHT THROUGH WEDNESDAY. ACROSS THE 
REMAINDER OF THE REGION SOME LIGHT SHOWERS THAT WERE ONGOING ACROSS 
SOUTHERN MOST ZONES EARLIER IN THE AFTERNOON HAVE ENDED...SO WILL REMOVE
EVENING POP MENTION FOR CHARLOTTE AND LEE COUNTIES IN A LATE EVENING 
UPDATE. LIGHT WINDS AND AMPLE LOW LEVEL MOISTURE MAY SUPPORT SOME FOG
DEVELOPMENT OVERNIGHT...BUT IT SHOULD NOT BE AS WIDESPREAD OR AS DENSE
AS LAST NIGHT AS BOUNDARY LAYER FLOW SLOWLY INCREASES OVERNIGHT AHEAD
OF THE FRONT WITH MORE OF A LOW STRATUS REGIME EXPECTED...AND WILL 
CHANGE TO PATCHY WORDING IN THE GRIDS/ZONES. 

&&

.AVIATION...SOME CHANCE THAT SEA FOG WILL BRIEFLY AFFECT PIE...TPA 
OR SRQ BEFORE WINDS BECOME NORTHEAST AROUND 02Z-03Z TIME FRAME. SOME 
FOG POSSIBLE TOWARD MORNING WITH MAINLY MVFR VISIBILITIES BUT 
CEILINGS COULD BECOME IFR FOR A WHILE. ALSO COULD SEE EXTENDED MVFR 
CEILINGS ON WEDNESDAY BUT WILL KEEP CEILINGS ABOVE 3000 FEET BEYOND 
15Z FOR NOW.

&&

.MARINE...AS MENTIONED ABOVE THE SEA FOG HUGGING THE COASTLINE FROM 
PINELLAS COUNTY NORTH EARLY THIS EVENING MAY ADVECT ONSHORE AND AFFECT
LOCATIONS BETWEEN SAINT PETERSBURG AND BAYPORT IN THE NEXT FEW HOURS
OTHERWISE A WIND SHIFT INTO THE NORTH AND NORTHEAST WITH INCREASING
SPEEDS SHOULD EVENTUALLY HELP TO SCOUR OUT THE FOG LATER TONIGHT INTO
WEDNESDAY AS THE FRONTAL BOUNDARY SAGS SOUTH. GIVEN THESE EXPECTED 
TRENDS WILL LET THE DENSE FOG ADVISORY EXPIRE AT 10 PM EST. ON WEDNESDAY
WINDS/SEAS WILL CONTINUE TO INCREASE IN THE WAKE OF THE FRONT WITH A 
PERIOD OF SMALL CRAFT CONDITIONS POSSIBLE OVER MY NORTHERN OFFSHORE 
WATERS FROM TARPON SPRINGS NORTH TO SUWANNEE RIVER DURING THE AFTERNOON
AND WILL ADD WORDING FOR SMALL CRAFT ADVISORY MAY BE REQUIRED FOR THESE
AREAS ON WEDNESDAY IN THE NEXT FORECAST ISSUANCE LATER THIS EVENING. 
OTHER THAN THESE MINOR TWEAKS...NO OTHER CHANGES REQUIRED. 

&&

.TBW WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GULF WATERS...DENSE FOG ADVISORY UNTIL 10 PM EST THIS EVENING FOR ENGLEWOOD TO 
     TARPON SPRINGS OUT 20 NM-ENGLEWOOD TO TARPON SPRINGS OUT 20 
     TO 60 NM-TARPON SPRINGS TO SUWANNEE RIVER OUT 20 NM-TARPON 
     SPRINGS TO SUWANNEE RIVER OUT 20 TO 60 NM.

&&

$$

DISCUSSION/MARINE...57/MCMICHAEL 
AVIATION...63/JILLSON