Area Forecast Discussion
Issued by NWS
FXUS62 KKEY 200800
Area Forecast Discussion
National Weather Service Key West FL
300 AM EST Fri Jan 20 2017
KBYX detects no precipitation echoes. Skies over the island chain
are mostly clear. Winds over land are south near 10 mph. C-MAN
winds, on average, are southeast to south at 10 to 15 knots.
Temperatures are in the lower to mid 70s.
.SHORT TERM (Today through Sunday)...
An area of high pressure will be centered over the Bahamas today.
This area of high pressure will move eastward tonight through
Saturday night. A strong cold front will rapidly progress eastward
through the Gulf of Mexico Sunday. Rain chances in the short term
portion of the forecast will be highest Sunday ahead of the
approaching strong cold front.
.LONG TERM (Sunday night through Thursday)...
Thunderstorms embedded in a squall line could produce damaging
wind gusts Sunday night, before the aforementioned strong cold
front sweeps through the Florida Keys. As a result, there is a
slight risk of severe thunderstorms Sunday night. An area of high
pressure will move eastward through the Gulf of Mexico Monday
through Tuesday. This area of high pressure will pass across the
Florida peninsula Tuesday night, before entering the southwestern
Atlantic Ocean Wednesday. An Atlantic ridge of high pressure will
extend across south Florida Wednesday night and Thursday. The
slight risk of severe thunderstorms Sunday night and very windy
conditions Sunday night and Monday are the big stories in the long
term portion of the forecast.
Moderate southeast to south breezes will prevail on all Keys
coastal waters today. No advisories expected today through
Saturday. A small craft advisory will likely be required for the
coastal waters of the Florida Straits Saturday night. A small
craft advisory will likely be required for all Keys coastal waters
Sunday through Monday night. A small craft advisory will likely be
required for the coastal waters of the Florida Straits and
offshore Gulf of Mexico Tuesday. A small craft advisory may be
required for the coastal waters of Florida Bay, the nearshore Gulf
of Mexico, and Hawk Channel Tuesday. No advisories expected
VFR conditions will prevail at EYW and MTH through at least the
next 24 hours. Sustained southeast winds of 10 to 15 knots
expected from just off the surface to about 3,000 feet.
On this date in Florida Keys weather history, in 1877, the high
temperature in Key West was 86 degrees. This set the daily record
for maximum temperature measured in Key West on January 20th, a
record which still stands 140 years later. Temperature records at
Key West date back to 1872.
.PRELIMINARY POINT TEMPS/POPS...
Key West 80 73 81 74 / 0 0 - 10
Marathon 83 73 83 74 / 0 0 - 10
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