Area Forecast Discussion
Issued by NWS
FXUS62 KKEY 280719
Area Forecast Discussion
National Weather Service Key West FL
219 AM EST Tue Feb 28 2017
KBYX detects isolated showers throughout the forecast area. Skies
over the island chain are partly cloudy. Winds over land are east
to southeast at 10 to 15 mph. C-MAN winds, on average, are east to
southeast near 15 knots. Temperatures are in the mid to upper 70s.
.SHORT TERM (Today through Wednesday night)...
An Atlantic ridge of high pressure over the southeastern United
States will gradually shift southward down the Florida peninsula
today through Wednesday. This ridge of high pressure will retreat
eastward Wednesday night. As a result, low level winds will veer
to more of a southeasterly direction and an atmospheric
disturbance may move northward from Cuba toward the Florida Keys
Wednesday night. Rain chances in the short term portion of the
forecast will be highest Wednesday night due to the anticipated
presence of this atmospheric disturbance in the service area.
.LONG TERM (Thursday through Monday)...
A cold front will progress southward down the Florida peninsula
Thursday and Thursday night. This cold front will likely pass
through the Florida Keys Friday. A large area of high pressure
over the Carolinas will build southward down the Florida peninsula
Friday night through Saturday night. This area of high pressure
will enter the western Atlantic Ocean Sunday. An Atlantic ridge of
high pressure will extend across north Florida Sunday night and
Monday. An extended period of strong northeast to east breezes is
likely Friday night through the upcoming weekend.
A Small Craft Advisory is in effect for the coastal waters of the
Florida Straits today due to sustained east to southeast surface
winds near 20 knots. A Small Craft Advisory will likely be
required for the coastal waters of the Florida Straits tonight. No
advisories expected Wednesday through Thursday night. A Small
Craft Advisory will likely be required for the coastal waters of
the Florida Straits Friday. A Small Craft Advisory may be required
for the coastal waters of Florida Bay, the Gulf of Mexico, and
Hawk Channel Friday. A Small Craft Advisory will likely be
required for all Keys coastal waters Friday night through at least
Today, VFR conditions expected for both the EYW and MTH
International terminals. Winds will average from 100 degrees at
10 knots, increasing to 12-14 knots, with gusts between 15 and 20
knots after 13Z or 14Z. Scattered cumulus cloud bases will be
found at or about 2,500-3,000 feet and 5,000-6,000 feet
respectively. Brief, MVFR cigs are possible at times, but mainly
On this date in Florida Keys weather history, in 1997, the low
temperature at Key West International Airport was 77 degrees. This
set the daily record for warmest minimum temperature measured in
Key West on February 28th. In addition, this low temperature of 77
degrees is tied as the warmest minimum temperature ever observed
in Key West during the month of February. Temperature records at
Key West date back to 1872.
.PRELIMINARY POINT TEMPS/POPS...
Key West 83 76 82 75 / 10 10 10 40
Marathon 85 76 85 76 / 10 10 10 40
GM...Small Craft Advisory for GMZ052>055-072>075.
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