Area Forecast Discussion
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903
FXUS62 KKEY 111536
AFDKEY

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KEY WEST FL
1036 AM EST THU FEB 11 2016

.DISCUSSION...A BROAD MID-UPPER LEVEL TROUGH PERSISTS ACROSS THE
EASTERN HALF OF THE UNITED STATES...ANCHORED BY UPSTREAM RIDGING WEST
OF THE ROCKIES. A DRY AND STABLE CP AIRMASS REMAINS ENTRENCHED AT THE
SURFACE EAST OF THE ROCKIES. IN FACT...MUCH OF THE WESTERN CARIBBEAN
HAS BEEN INFUSED BY AN INCONGRUOUS AIRMASS. DEWPOINTS ALONG THE
EASTERN YUCATAN ARE IN THE MID 50S...WITH DEWPOINTS NEAR 60 IN
BELIZE. MIMIC TPW LOOPS PLACE THE MT/CP AIRMASS BOUNDARY FROM NEAR
THE ANTILLES TO NICARAGUA.

.CURRENTLY...SKIES REMAIN OCCLUDED BY STRIPS OF HIGH-LEVEL CIRRUS.
MODERATE NORTHEAST BREEZES PREVAIL ACROSS THE FLORIDA KEYS AND THE
COASTAL OBSERVING STATIONS. TEMPERATURES HAVE RECOVERED INTO THE
UPPER 50S TO NEAR 60...WITH DEWPOINTS IN THE MID TO UPPER 40S. THE
RADAR IS FREE OF METEOROLOGICAL ECHOES. THE CURRENT FORECAST IS ON
TRACK AND ADVERTISES A COOL AFTERNOON WITH TEMPERATURES REACHING THE
MID 60S. LOW LEVEL CLOUD COVER WILL BE MINIMAL...HOWEVER...THE PESKY
CIRRUS WILL LIKELY PERSIST. RAIN CHANCES ARE ZILCH.

&&

.MARINE...SMALL CRAFT SHOULD EXERCISE CAUTION ACROSS THE STRAITS OF
FLORIDA DUE TO NORTHEAST BREEZES 15 TO 20 KNOTS. AN AREA OF HIGH
PRESSURE WILL MOVE EASTWARD ACROSS THE GULF OF MEXICO THIS AFTERNOON
THROUGH FRIDAY. A REINFORCING HIGH PRESSURE AREA THEN WILL BUILD
SOUTHEASTWARD...ACROSS THE GULF OF MEXICO AND FLORIDA PENINSULA ON
SATURDAY AND SUNDAY.

&&

.AVIATION...PREVAILING VFR CONDITIONS ARE EXPECTED ACROSS THE ISLAND
TERMINALS FOR THE REMAINDER OF THE DAY. GENTLE BREEZES OUT OF THE
NORTH NORTHEAST WILL VEER SLIGHTLY EARLY THIS EVENING...WITH
PREDOMINATE NORTHEAST WINDS PERSISTING THROUGH THE END OF THE
FORECAST PERIOD. EXPECT SCT CIRRUS CLOUDS BETWEEN FL200-250 THROUGH
THIS AFTERNOON BEFORE DIMINISHING THIS EVENING.

&&

.CLIMATE...ON THIS DATE IN KEY WEST WEATHER HISTORY...BACK IN THE
YEAR IN 2000...THE DAILY RECORD LOW TEMPERATURE OF 50F WAS RECORDED.
THE COLDEST LOW TEMPERATURE EVER OBSERVED DURING THE MONTH OF
FEBRUARY IS 44 DEGREES...OCCURRING IN 1917 AND IN 1899. TEMPERATURE
RECORDS IN KEY WEST DATE BACK TO THE YEAR 1872.

&&

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

$$

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

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