Area Forecast Discussion
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000
FXUS62 KKEY 170709
AFDKEY

Area Forecast Discussion
National Weather Service Key West FL
209 AM EST Sun Dec 17 2017

.DISCUSSION...
.CURRENTLY...
KBYX detects no precipitation echoes. Skies over the island chain
are partly cloudy. Winds over land are northeast near 10 mph.
C-MAN winds, on average, are northeast to east at 15 to 20 knots.
Temperatures are in the upper 60s.

.SHORT TERM (Today through Tuesday)...
In the low levels of the atmosphere, an Atlantic ridge of high
pressure will extend across North Florida today through Tuesday.
In the mid levels of the atmosphere, an area of high pressure will
be centered near South Florida today through Tuesday. In the upper
levels of the atmosphere, a ridge of high pressure will be located
over the Bahamas today through Tuesday. Large scale subsidence
will be responsible for a near zero chance of measurable rainfall
for the Florida Keys in the short term portion of the forecast.

&&

.LONG TERM (Tuesday night through Saturday)...
In the low levels of the atmosphere, an area of high pressure will
be located northeast of the Bahamas Tuesday night through
Saturday. In the mid levels of the atmosphere, an anticyclone will
be centered near the Florida Keys Tuesday night through Saturday.
In the upper levels of the atmosphere, zonal flow will prevail
Tuesday night through Saturday. Anticyclonic flow in the low to
mid levels of the atmosphere will be responsible for a near zero
chance of measurable rainfall for the Florida Keys in the long
term portion of the forecast.

&&

.MARINE...
A Small Craft Advisory is in effect for the coastal waters of the
Florida Straits today due to sustained northeast to east surface
winds near 20 knots. A Small Craft Advisory may be required for
the coastal waters of the Florida Straits tonight. No advisories
expected Monday through at least Thursday night.

&&

.AVIATION...
Brief periods of MVFR ceilings are likely this morning, mainly
after 17/09z. Otherwise, VFR conditions will prevail, with
northeast winds of 5 to 10 knots turning to the east and
increasing to 10 to 15 knots, with gusts near or above 20 knots,
during the daytime.

&&

.CLIMATE...
On this date in Florida Keys weather history, in 2006, 1.07 inches
of rain fell at Key West International Airport. This set the daily
record for maximum rainfall measured in Key West on December 17th.
Rainfall records at Key West date back to 1871.

&&

.PRELIMINARY POINT TEMPS/POPS...
Key West  81 74 82 74 / 0 - - 0
Marathon  81 74 82 74 / 0 - - 0

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...None.
GM...Small Craft Advisory for GMZ052>055-072>075.

&&

$$

Public/Marine/Fire...BS
Aviation/Nowcasts....MCLOVIN

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