Area Forecast Discussion
Issued by NWS Melbourne, FL

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FXUS62 KMLB 121520
AFDMLB

Area Forecast Discussion
National Weather Service Melbourne FL
Issued by National Weather Service KEY WEST FL
1020 AM EST Tue Dec 12 2017

.DISCUSSION...

...Gusty Westerly Winds This Afternoon Ahead of a Cold Front...
...Deteriorating Marine Conditions This Afternoon/Tonight...

Mostly sunny skies prevail across central Florida this morning,
after a clear and chilly night. Air temperatures have rebounded
quickly amidst freshening southwesterly breezes, ahead of an
approaching cold front, with recent observations indicating
temperatures in the upper 50s or lower 60s at most locations.
Data from the Cape Canaveral morning radiosonde balloon indicated
a very dry and stable atmosphere. The currently amplified upper-
air pattern never allowed any significant air mass modification
after the last cold front, and little moistening will occur today.
Therefore, a rain-free frontal passage is expected.

Current forecasts for this afternoon are on track. High
temperatures will reach the mid 70s most areas, with a few more
clouds arriving ahead of the front. Breezy conditions will develop
with southwest winds increasing to a steady 15 to 20 mph with
higher gusts.
&&

.AVIATION...
Satellite imagery and surface observations indicate a nearly
cloudless cold front quickly moving east through the Gulf of Mexico
and Florida Panhandle. Gentle southwest breezes this morning will
shift to the west and increase this afternoon (16-18Z) at all
terminals as the front pushes across the peninsula. Expect westerly
wind gusts to peak near 25 knots, accompanied by BKN CIGS between
040 and 050. Breezes will diminish after 00Z.
&&

.MARINE...
Small Craft Advisories will go into effect this afternoon for
east-central Florida coastal waters as breezes shift west and
increase to 20 to 25 knots. In fact, southwest winds are
approaching a steady 20 knots already at Buoy 41009, 20 nautical
miles east of Port Canaveral. Seas will build to 2-4 feet
nearshore by late afternoon and 5-6 feet well offshore.
&&

.MLB WATCHES/WARNINGS/ADVISORIES...
FL...None.
AM...Small Craft Advisory from 4 PM this afternoon to 4 AM EST
     Wednesday for Flagler Beach to Volusia-Brevard County Line
     0-20 nm-Volusia-Brevard County Line to Sebastian Inlet 0-20
     nm.

     Small Craft Advisory from 4 PM this afternoon to 4 PM EST
     Wednesday for Sebastian Inlet to Jupiter Inlet 20-60 nm.

     Small Craft Advisory from 1 PM this afternoon to 4 PM EST
     Wednesday for Flagler Beach to Volusia-Brevard County Line
     20-60 nm-Volusia-Brevard County Line to Sebastian Inlet 20-
     60 nm.

     Small Craft Advisory from 4 PM this afternoon to 10 AM EST
     Wednesday for Sebastian Inlet to Jupiter Inlet 0-20 nm.

&&

$$

SHORT TERM/AVIATION...Rothwell
LONG TERM/IMPACT WX...Kasper



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