Area Forecast Discussion
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604
FXUS62 KKEY 181631
AFDKEY

Area Forecast Discussion
National Weather Service Key West FL
1131 AM EST Thu Jan 18 2018

.DISCUSSION...
Currently - A cold front blasted through the Keys last evening and
most areas are still encountering fresh north breezes. High
pressure responsible for these winds is centered over the lower
Mississippi Valley. Temperatures currently range from near 50
through the mid 50s with dew point temperatures near 40 degrees.
Skies are mostly clear with patchy thin cirrus streaming
northeastward.

Short Term Update - Fresh winds will gradually decrease and shift
northeastwards late this morning through the afternoon as the
previously mentioned high pressure system expands southeastwards,
pushing the strongest belt of winds off to our south. Day time
warming over South Florida will also help speed relaxing winds.
Continued cool trajectory will only allow temperatures to rise to
near 60 degrees Keys wide. Expect cool dry and mostly sunny
conditions. May update later to adjust wind transitions when
winds decrease further.

&&

.MARINE...
Fresh north breezes continue across most Keys waters this
morning. Small craft advisory remains in effect for all Keys
waters except for the Florida Bay. High pressure centered over the
lower Mississippi Valley will expand southeastwards through the
afternoon. This along with day time heating over South Florida
will act to relax our winds as they turn more northeasterly. May
update later to shave back the small craft advisory as
appropriate.

&&

.AVIATION...
VFR conditions expected at the island terminals. North winds near
15 knots and gusty is resulting in crosswinds at the island
runways. However, winds are expected to shift northeasterly and
decrease to 10 to 15 knots through the afternoon hours.

&&

.CLIMATE...
Even though temperatures in the Florida Keys dropped to well below
normal, records were not threatened. For this date, the record
low for Key West was 48 degrees set in 1981, and the minimum high
was 57 degrees set in 2003. Day time highs are expected to near 60
this afternoon.

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...None.
GM...Small Craft Advisory for GMZ032>035-042>044-052>055-072>075.

&&

$$

Public/Marine/Fire...11
Aviation/Nowcasts....11
Data Collection......KN

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