Area Forecast Discussion
Issued by NWS
FXUS62 KKEY 171842
Area Forecast Discussion
National Weather Service Key West FL
142 PM EST Tue Jan 17 2017
KBYX detects no precipitation echoes. Skies over the island chain
are mostly sunny. Winds over land are east to southeast near 15
mph. C-MAN winds, on average, are east to southeast at 15 to 20
knots. Temperatures are in the lower to mid 80s.
.SHORT TERM (Tonight through Thursday night)...
An Atlantic ridge of high pressure will extend across north
Florida tonight and Wednesday, before retreating eastward
Wednesday night through Thursday night. Precipitable water values
will remain below one inch tonight through Thursday night. Lack of
sufficient atmospheric moisture will be responsible for no chance
of measurable rainfall in the short term portion of the forecast.
.LONG TERM (Friday through Tuesday)...
An area of high pressure will be centered just east of the
Bahamas Friday through Saturday night. A cold front will progress
eastward across the Gulf of Mexico Sunday. This cold front will
approach south Florida Sunday night. The cold front should pass
thorugh the Florida Keys Monday. A ridge of high pressure may move
eastward across the Gulf of Mexico Monday night and Tuesday. Rain
chances in the long term portion will be highest ahead of and
along the aforementioned cold front.
A small craft advisory will be in effect for the coastal waters of
the Florida Straits tonight until winds decrease and seas subside.
No advisories expected Wednesday through at least Saturday night.
A small craft advisory may be required for the coastal waters of
the Atlantic and offshore Gulf of Mexico Sunday. A small craft
advisory will likely be required for all Keys coastal waters
Tonight, mostly VFR conditions will prevail at both the Key West and
Marathon International terminals. Surface winds will average from
100-120 degrees at or about 7 to 10 knots, backing to 080 degrees
after sunset. Expect few to scattered cumulus clouds, with bases
at or about FL025-030 and FL040-050.
On this date in Florida Keys weather history, in 2011, 1.91 inches
of rain fell at Key West International Airport. This set the daily
record for maximum rainfall measured in Key West on January 17th.
Rainfall records at Key West date back to 1871.
.PRELIMINARY POINT TEMPS/POPS...
Key West 72 80 70 79 / 0 0 0 0
Marathon 74 81 69 81 / 0 0 0 0
GM...Small Craft Advisory for GMZ052>055-072>075.
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