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000
FXUS62 KKEY 161810
AFDKEY

Area Forecast Discussion
National Weather Service Key West FL
210 PM EDT Wed Aug 16 2017

.DISCUSSION...
.CURRENTLY...
KBYX detects widely separated showers throughout the forecast
area. Skies over the island chain are partly cloudy. Winds over
land are east to southeast near 10 mph. C-MAN winds, on average,
are east to southeast near 10 knots. Temperatures are in the lower
90s.

.SHORT TERM (Tonight through Friday night)...
An area of enhanced atmospheric moisture will move westward across
the eastern portion of the Florida Straits tonight. This area of
enhanced atmospheric moisture will pass through the Florida Keys
Thursday into Thursday night. A low pressure system will move into
the eastern Caribbean Sea Friday into Friday night. Rain chances
in the short term portion of the forecast will be highest Thursday
and Thursday night as the aforementioned area of enhanced
atmospheric moisture passes through the Florida Keys.

&&

.LONG TERM (Saturday through Wednesday)...
A low pressure system will move westward through the central and
western Caribbean Sea Saturday into early next week. A trough of
low pressure may approach the Florida Keys Tuesday night or
Wednesday. Rain chances in the long term portion of the forecast
will be highest Saturday night and Sunday when the low pressure
system is at its closest proximity to the Florida Keys.

&&

.MARINE...
Gentle to moderate east to southeast breezes will prevail on all
Keys coastal waters tonight. No advisories expected tonight
through at least Saturday night. A Small Craft Advisory may be
required for the coastal waters of the Florida Straits Sunday. A
Small Craft Advisory will likely be required for the coastal
waters of the Florida Straits Sunday night. A Small Craft Advisory
may be required for the coastal waters of the Florida Straits
Monday. A Small Craft Advisory will likely be required for the
coastal waters of the Florida Straits Monday night.

&&

.AVIATION...
Vertical wind profiles available from the KBYX radar indicate
conditions favorable for moist cloud line genesis this afternoon,
especially along the Lower Keys. Thunderstorms in the vicinity of
EYW should remain west and north of the terminal, however there are
still slight chances for direct impacts at the terminal between
19z and 21Z. Prepare for temporary periods of MVFR CIGS, IFR VIS,
and convective wind gusts near 25 knots. Increased rain chances
return Thursday morning for both terminals.

&&

.CLIMATE...
On this date in Florida Keys weather history, in 1891, the low
temperature in Key West was 71 degrees. This set the daily record
for minimum temperature measured in Key West on August 16th, a
record which still stands 126 years later. Temperature records at
Key West date back to 1872.

&&

.PRELIMINARY POINT TEMPS/POPS...
Key West  84 90 83 91 / 30 40 40 30
Marathon  82 92 82 93 / 30 40 40 30

&&

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

&&

$$

Public/Marine/Fire...BS
Aviation/Nowcasts....CLR
Data Collection......DR

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