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000
FXUS62 KKEY 170337
AFDKEY

Area Forecast Discussion
National Weather Service Key West FL
1037 PM EST Wed Jan 16 2019

.DISCUSSION...
Currently - A large high pressure system over the eastern United
States extends into the adjacent Gulf of Mexico and Atlantic
waters. This is keeping winds light out of the north across the
Florida Keys. The flow is still relatively cool though not much in
the way of cold air advection is taking place. Temperatures at the
office actually went up a degree or two through the evening hours.
Stable conditions continue with a relatively shallow boundary
layer and rather deep isothermal layer just above.

Short Term Update - The previously mentioned high pressure system
will spread further eastward into the eastern United States. As a
result, winds will try to veer northeast through the overnight
period. Guidance suggests there will be a minor wind surge late
in the overnight period. Temperatures should be able to drop some
through the overnight period with dew points in mid to upper 60s,
especially as the minor late night surge occurs. Dry conditions
will continue.

&&

.MARINE...
High pressure over the eastern United States will spread eastward
some overnight, resulting in local winds shifting more northeast.
Expect winds to firm up moderately due to a weak drainage flow. No
cautions or advisories are expected. Only minor first period wind
transitional wording adjustments made in the evening marine
update.

&&

.AVIATION...
VFR conditions will prevail at the island terminals through the
overnight period. Winds will be light out of the north,
strengthening a bit and shifting more northeast by morning.

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...None.
GM...None.

&&

$$

Public/Marine/Fire...11
Aviation/Nowcasts....11

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