Area Forecast Discussion
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000
FXUS62 KKEY 102006
AFDKEY

Area Forecast Discussion
National Weather Service Key West FL
306 PM EST Sun Dec 10 2017

.DISCUSSION...
A long wave trough axis extends south down the Appalachians and
reaches deep into the Gulf of Mexico. The cold front which
blasted through the Florida Keys yesterday has stalled over
eastern Cuba and Jamaica. Cold air advection and northerly
breezes peaked around sunrise, with sustained winds near 25 knots
and gusts into the 30s. Since then, breezes have slowly
diminished. Current temperatures are only a few degrees above the
lows this morning. In fact, portions of Key Largo have not
reached 60 yet, and the high this afternoon at the office is 62
degrees. The KBYX radar is echo free. Stratocumulus layers based
near 3 kft have plagued the Lower Keys this afternoon.

.FORECAST...
Continental-polar northerlies will persist across the Florida
Keys tonight through Monday night. Lows will reach into the 50s
both nights, with highs struggling through the 60s Monday. Rain
chances remain nil. By Tuesday, a weak cold front will rotate
southeast through the Gulf of Mexico, introducing a slight rain
chance Tuesday night, followed by freshening northwest to north
breezes Wednesday. Breezes will quickly diminish Wednesday night
and Thursday, followed by variable breezes Thursday night. A
second cold front, or trough axis will approach the Keys Friday
and Friday night. The pattern appears to shift to a more easterly
flow Saturday through Sunday, which would result in milder
temperatures, and increased humidity. Until then, enjoy the cooler
than normal temperatures.

&&

.MARINE...
Small Craft Advisory remains in effect for the Straits of Florida
and the extreme southeastern Gulf of Mexico due to residual seas
of 8 and 7 feet, respectively. From synopsis, high pressure will
persist to the northwest of the Florida Keys tonight through
Tuesday. A weak cold front will freshen northwest to north breezes
Tuesday night and Wednesday. High pressure will slide east across
the Gulf of Mexico and Florida Peninsula Wednesday night through
Thursday night. A second cold front will move to the southeast
across the Gulf of Mexico Friday and Friday night.

&&

.AVIATION...
VFR and gusty northerly breezes will persist at the EYW and MTH
terminals this evening. Crosswind gusts near 20 knots will slowly
diminish Monday morning. Rain chances are nil.

&&

.PRELIMINARY POINT TEMPS/POPS...
Key West  57  67  59  72 / 0 0 0 -
Marathon  54  66  58  71 / 0 0 0 -

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...None.
GM...Small Craft Advisory for GMZ033-034- 052>055-072>075.

&&

$$

Public/Marine/Fire...CLR
Aviation/Nowcasts....CLR
Data Collection......DR

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