Area Forecast Discussion
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FXUS62 KKEY 221406

Area Forecast Discussion
National Weather Service Key West FL
1006 AM EDT Sun Jul 22 2018

A ragged line of showers and thunderstorms has crossed portions of
the Middle and Upper Keys earlier this morning from the Gulf/Bay
waters into the Atlantic. Current echoes on KBYX Doppler radar are
in those Atlantic waters and in the vicinity of Key West.
Additional showers are approaching the far western waters in the
vicinity of the Dry Tortugas.

The early morning local sounding shows an increase in moisture on
the gentle to moderate veered profile into the mid levels. MIMIC
satellite imagery shows the marked increase in moisture
immediately upstream, and quite evident on the morning soundings
of our northern neighbors. A recently updated zone forecast was
basically an echo of the early morning issuance with transitional
wording removed for the afternoon period. We expect a higher
concentration of showers and thunderstorms along and to the north
and east of the island chain, with lesser coverage extending into
the Atlantic waters. Winds should accelerate a little more than
their present readings, and continue to favor the westerly
direction through the afternoon.


The upcoming coastal waters forecast will have only minor
adjustments to the winds. But overall, winds should be westerly at
10 to 15 knots across the northern half of the marine area, and
closer to 10 knots over the Straits. No cautionary headlines for
small craft are expected in any of the waters, but boaters should
stay aware of isolated to scattered showers/tstms over the next
several forecast periods.


Rest of today and this evening, VFR conditions will prevail at both
KEYW and KMTH Int`l island terminals. Winds will average from 270 to
300 degrees aoa 8-11 knots with gusts between 15 and 20 knots. Short
period mvfr/ifr conditions are possible in showers and
thunderstorms, with isolated higher wind gusts in any cells that
move near the terminals.


In 1956, the daily record high temperature of 93 degrees was last
recorded in Key West. Temperature records date back to 1872.





Data Collection......BT

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