Area Forecast Discussion
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FXUS62 KKEY 270111

Area Forecast Discussion
National Weather Service Key West FL
911 PM EDT Fri May 26 2017

KBYX detects no precipitation echoes in the forecast area. Skies
over the island chain are partly cloudy. Winds over land are
northeast near 5 mph. C-MAN winds, on average, are northeast to
east at 5 to 10 knots. Temperatures are in the mid 80s.

.SHORT TERM (Overnight)...
In the low levels of the atmosphere, a feeble Atlantic ridge of
high pressure will extend across Central Florida overnight. In the
mid levels of the atmosphere, an area of high pressure will be
centered over the northern Gulf of Mexico tonight. In the upper
levels of the atmosphere, a weak trough of low pressure will be
located over the Bahamas overnight. The 00z KKEY sounding is very
unstable and moist for this time of year, with a precipitable
water (PWAT) value just above one and three quarters of an inch.
Atmospheric moisture will decrease overnight. By sunrise Saturday,
PWAT values will be just above one and one half of an inch, which
is near normal for the end of May. This decrease in atmospheric
moisture should limit POPs to slight chance category overnight.


Light to gentle northeast to east breezes will prevail on all
Keys coastal waters overnight. No advisories or cautionary
headlines expected tonight through Tuesday. Small craft are urged
to exercise caution on the coastal waters of the Florida Straits
Tuesday night through Wednesday night due to sustained east to
southeast surface winds of 15 to 20 knots.


VFR conditions will prevail at EYW and MTH through at least
Saturday afternoon. Light and variable breezes are expected
overnight, with gentle easterly breezes near 8 knots picking up
late Saturday morning.


On this date in 1899, H. R. Boynton, an observer with the Weather
Bureau office in Key West, recorded details of the occurrence of
numerous waterspouts in the vicinity of the island in the morning.
His observations and drawings of the event were published in the
national scientific journal "Monthly Weather Review".





Data Collection......Chesser

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