Area Forecast Discussion
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000
FXUS62 KKEY 211513
AFDKEY

AREA FORECAST DISCUSSION FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
1013 AM EST SUN DEC 21 2014

.DISCUSSION...
A REVIEW OF UPPER-AIR DATA OVER THE LAST 24 HOURS REVEALS CONTINUED
WARMING AND MOISTENING OF THE LOW LEVELS...AND THE KEY WEST MORNING
RAWINSONDE OBSERVATION...MODIFIED FOR A SURFACE TEMPERATURE AND
DEWPOINT OF 78F/70F INDICATES A WEAKLY UNSTABLE STRATIFICATION WITH
MODERATE CONVECTIVE INHIBITION ENERGY. LATEST KEY WEST RADAR SCANS
ARE SHOWING ISOLATED SHOWERS OF MOSTLY LIGHT RAIN OVER THE STRAITS OF
FLORIDA. SATELLITE AND SURFACE OBSERVATIONS INDICATE CONSIDERABLE
HIGH CLOUDINESS AS EFFLUENT FROM A PERSISTENT MESOSCALE CONVECTIVE
SYSTEM OVER THE YUCATAN CHANNEL STREAMS NORTHEASTWARD IN FAST FLOW
ALOFT.

FOR THIS AFTERNOON...AIR TEMPERATURES SHOULD TOP OUT NEAR 80F WITH
PARTLY CLOUDY SKIES...LIGHT EAST-SOUTHEAST BREEZES...AND A SLIGHT
CHANCE OF SHOWERS. FEW ADJUSTMENTS WILL BE NEEDED TO THE FORECASTS AT
THIS TIME.
&&

.MARINE...
GENTLE TO MODERATE EAST TO SOUTHEAST BREEZES WILL PREVAIL ACROSS
FLORIDA KEYS COASTAL WATERS THIS AFTERNOON. ISOLATED SHOWERS OF
MOSTLY LIGHT TO MODERATE RAIN WILL BE FOUND AS WELL.
&&

.AVIATION...
VFR WILL PREVAIL AT THE EYW AND MTH TERMINALS. CLOUD BASES WILL
RANGE FROM 020-025...080-100 AND 250. CROSSWIND IMPACTS ARE NOT
EXPECTED WITH MOSTLY SOUTHEAST WINDS NEAR 10 KNOTS.
&&

.CLIMATE...DECEMBER 21ST...ON THIS DATE IN FLORIDA KEYS WEATHER
HISTORY...IN 1901...THE DAILY RECORD LOW TEMPERATURE OF 50 DEGREES
WAS RECORDED AT KEY WEST. TEMPERATURE RECORDS IN KEY WEST DATE BACK
TO 1872.
&&

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

$$

PUBLIC/MARINE.........KASPER
AVIATION/NOWCASTS.....CLR
DATA COLLECTION.......FLING

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