Area Forecast Discussion
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FXUS62 KKEY 241850

Area Forecast Discussion
National Weather Service Key West FL
250 PM EDT Mon Apr 24 2017

Satellite interrogation shows a weak front approaching the
Southeastern Gulf this afternoon. Radar is showing a thin broken
line of showers near the Dry Tortugas. Skies around the Keys are
mostly sunny at this hour. Winds are out of the west near 10 knots
at the terminals, and the marine reporting stations around the
Island Chain.

The weak front will cross the Keys area this evening and be past
the Upper Keys by midnight. Winds will surge as the front passes,
then quickly relax by Tuesday morning. have low end slight chance
of showers, but we will be lucky to measure any rainfall from this
front. Other than winds, humidity values will be lower post
frontal which will be reflected by near 70 for lows the next
couple of mornings. Expecting Chamber of Commerce weather Tuesday
through Thursday ahead of the next trough crosses the eastern
United States. Although the trough will stall well north of the
Keys area, the parent upper low will strengthen the Atlantic ridge
resulting in freshening winds across the area on Friday. Have high
end slight chance of showers Friday through the weekend to account
for higher moisture and speed convergence.


A weak cold front will move over the Keys area this evening
through midnight. Winds will surge briefly possibly requiring a
cautionary statement for the Southeastern Gulf waters. The wind
surge will be very brief and expect winds to lay down quickly
after midnight. Pleasant conditions will persist through Thursday
night. Winds will increase again Thursday night and Friday as the
Atlantic high pressure strengthens the gradient winds over the


Scattered light showers will impact the terminals from 21Z to 01Z as
a weak cold front pushes across the area. Very brief periods of MVFR
ceilings (around 2500 feet) and visibilities of 3-5SM are possible
in the showers. Will maintain VCSH in the TAFs. Expect west to
northwest winds with occasional gusts 15-20 knots this period.
Expect VFR conditions after 02Z with winds diminishing to 8-10


On this date in Keys Weather History. April 24, 1979. 2.70 inches
of rain fell at the Key West Airport setting the daily record for
rainfall. Rainfall records for Key West date back to 1871.


Key West  72  81  69  83 / 10 -  -  -
Marathon  72  83  69  85 / 10 -  -  -




Data Collection......Chesser

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