Area Forecast Discussion
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000
FXUS62 KKEY 280307
AFDKEY

AREA FORECAST DISCUSSION FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
1007 PM EST SAT DEC 27 2014

.DISCUSSION...
SKIES ARE PARTLY CLOUDY ALONG THE KEYS ISLAND CHAIN AT THIS HOUR.
WINDS ARE EAST TO SOUTHEAST...GENTLE TO MODERATE FROM THE ISLANDS
EASTWARD...AND ARE MORE EASTERLY FROM WEST OF THE ISLANDS NORTHWARD
THROUGH THE GULF MARINE ZONES. TEMPERATURES ARE IN THE MID 70S AT
THIS HOUR...AND KBYX RADAR IS VOID OF PRECIPITATION ECHOES.

THE LATE EVENING LOCAL SOUNDING SHOWS A CONTINUED DRYING IN LAYERS
ALOFT...NAMELY ABOVE A STRONG INVERSION BASED NEAR 3000 FEET. IR
SATELLITE IMAGES AND OBSERVATIONS OVER THE PAST FEW HOURS SHOW
SCATTERED TO BROKEN STRATUS FORMING VERY NEAR THE ISLAND CHAIN RIGHT
AT THAT LEVEL. BELIEVE THERE IS ENOUGH DEWPOINT DEPRESSION AT THE
SURFACE SO THAT THE PROBABILITY FOR FOG IS A LITTLE LOWER THAN LAST
NIGHT...PLUS THE WIND DIRECTION HAS PITCHED MORE TO THE
EAST/SOUTHEAST. WILL MONITOR THIS OVER THE NEXT COUPLE OF HOURS
THOUGH. THE ONLY REASON TO ADJUST THE AFTERNOON ZONE FORECAST IS IF
LOWER CLOUDS THICKEN MUCH MORE. FOR NOW...WILL CONTINUE TO MONITOR
THAT AND NOT UPDATE.

&&

.MARINE...
ON THE UPCOMING COASTAL WATERS FORECAST...THE ONLY MINOR CHANGE WILL
BE TO SET THE INITIAL WINDS IN A FEW OF THE MARINE GROUPINGS TO THE
EAST/SOUTHEAST. IN ADDITION...SINCE THE WINDS HAVE VEERED AND
SOMEWHAT DRIER AIR IS EVIDENT AT THE SURFACE...PULLED THE MENTION OF
FOG OUT OF THE REMAINDER OF THE OVERNIGHT PERIOD.

&&

.AVIATION...
BRIEF MVFR CIGS ARE POSSIBLE LATE THIS EVENING. OTHERWISE...EXPECT
VFR CONDITIONS AT THE KEY WEST AND MARATHON TERMINALS OVERNIGHT AND
SUNDAY. WINDS WILL BE FROM THE EAST/SOUTHEAST NEAR 10 KNOTS THROUGH
EARLY SUNDAY MORNING...AND JUST A FEW KNOTS LOWER DURING THE DAY
SUNDAY.

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
GM...NONE.

&&

$$

PUBLIC/MARINE.........04
AVIATION/NOWCASTS.....04
DATA COLLECTION.......CHESSER

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