Area Forecast Discussion
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249
FXUS62 KKEY 200336
AFDKEY

Area Forecast Discussion
National Weather Service Key West FL
1036 PM EST Tue Feb 19 2019

.DISCUSSION...
Currently - A large surface high pressure system is spreading
southeastward off of the United States east coast into the
Atlantic. This is resulting in gradually strengthening east to
southeast breezes across the Florida Keys and surrounding waters.
Substantial deep layered ridging remains across the area. There
is substantial dry air aloft and little in the way of CAPE. The
base of the weak inversion is around 825 mb, which is enough room
for a few weak showers to form. Some of this activity is working
its way across the Upper Keys. The healthy surface flow is keeping
temperatures from going much lower, and temperatures are in the
mid 70s with dew points up in the lower 70s.

Short Term Update - Moderate to fresh east to southeast breezes
will continue overnight due to the high pressure to our north.
This warm and humid flow will keep temperatures from moving much
through the rest of the night and dew points will remain in the
lower 70s. Rain chances will remain slight.

&&

.MARINE...
High pressure to our north will maintain a moderate to fresh east
to southeast breezes across Keys waters through the overnight
period. An advisory remains in place for the Florida Straits and
Hawk Channel, and cautions are installed elsewhere. Only minor
changes made in the evening marine update.

&&

.AVIATION...
VFR conditions will prevail at the island terminals overnight.
Surface winds will be 10 to 15 knots and gusty out of the east to
southeast.

&&

.CLIMATE...


&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...None.
GM...Small Craft Advisory for GMZ042>044-052>055-072>075.

&&

$$

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

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