340 
FXUS62 KKEY 291546
AFDKEY

Area Forecast Discussion
National Weather Service Key West FL
1046 AM EST Mon Jan 29 2024

...New DISCUSSION, MARINE, AVIATION...

.DISCUSSION...
Issued at 1045 AM EST Mon Jan 29 2024
This morning's surface analysis places a strong cold front now
clearing southeast of the Bahamas, with elongated high pressure
building in its wake across the Tennessee Valley and the 
Southeast. The 12z sounding at KEY sampled a dry adiabatic, well- 
mixed layer extending from the surface up to around the 850 mb 
isobaric level, capped by a formidable 4-6 degree Celsius 
temperature inversion. Skies are partly cloudy across the island 
chain, with intervals of stratocumulus decks occasionally 
passing in the mean steering flow northwesterlies. Despite decent
amounts of solar insolation, temperatures should struggle to 
climb out of the 60s for highs today at most communities owed to 
the cold advection associated with the backed 0-3 km wind profile.
Outside of taking down the Small Craft Advisory in the Florida 
Bay due to slightly under performing winds in that marine zone, 
no changes proposed for this late morning update package.

&&

.MARINE...
Issued at 1045 AM EST Mon Jan 29 2024
A Small Craft Advisory is in effect for the Bayside and Gulfside
waters, Hawk Channel, the Straits of Florida, and the southeastern
Gulf of Mexico, including the Dry Tortugas. While winds have
slackened below Small Craft Advisory levels in the Florida Bay,
Small Craft Should continue to Exercise Caution. From synopsis, strong
northerly breezes will gradually slacken this afternoon through 
Tuesday night. A reinforcing cold front will push through the 
Florida Keys Wednesday night, followed by a brief freshening of 
breezes. Slackened, northerly breezes are expected Thursday 
through Friday.

&&

.AVIATION...
(15Z TAFS)
Issued at 1045 AM EST Mon Jan 29 2024
Gradually clearing sky cover and slackening winds will define the 
TAF period at both island terminals. The frequency of surface gusts 
will slacken to negligible after sunset. A very deep layer of dry 
moisture will allow minimal to no showers across the island chain.

&&

.CLIMATE...
On this day in 1991, the daily record high temperature of 86F and 
the daily record warm low temperature of 76F were both recorded in 
Key West. Temperature records for Key West in January date back to 
1873.

&&

.PRELIMINARY POINT TEMPS/POPS...
Key West  69  60  67  59 /   0   0   0   0 
Marathon  68  60  68  59 /   0   0   0   0 

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...None.
GM...Small Craft Advisory until 5 PM EST this afternoon for 
     GMZ032>035-042>044-052>055-072>075.

&&

$$

Public/Marine/Fire...BT
Aviation/Nowcasts....AJP
Data Acquisition.....AJP/BT

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