261 
FXUS62 KKEY 041447
AFDKEY

Area Forecast Discussion
National Weather Service Key West FL
1047 AM EDT Sun Apr 4 2021

.DISCUSSION...
A tranquil Easter Sunday morning across the Florida Keys. After 
temperatures bottoming out in the upper 60s, under partly cloudy 
skies, temperatures have climbed into the lower 70s across the 
island chain. Doppler radar only detects isolated speed
convergence-driven showers and sprinkles in the Straits of 
Florida. The 12z sounding at KEY continues to highlight a 
formidable thermal inversion based at around 800 hPa. Combined 
with limited ambient low- level moisture, the island chain is 
expected to remain rain free for the rest of the afternoon. With 
the mainland diurnal heating this afternoon, northeasterly breezes
will gradually slacken. All in all, no changes are needed in this
late morning update forecast package. 

&&

.MARINE...
A Small Craft Advisory remains in effect for Hawk Channel, the
Gulf waters including the Dry Tortugas, and the Florida Straits.
Small craft should exercise caution in the Florida Bay. Strong 
northeast to east breezes will slowly slacken this afternoon 
through Monday. with gentle to moderate east to southeast breezes 
prevailing Tuesday through Thursday. 

&&

.AVIATION...
VFR and gusty northeast to east winds will prevail at the EYW and 
MTH terminals through the afternoon. SCT to BKN layers of 
stratocumulus based at 050 will be more common at MTH, although both 
TAFs have these CIGS included. 

&&

.CLIMATE...
April 4th, on this date in 2005, the daily record low temperature of 
55 degrees was recorded in Key West. Temperature records date back 
to 1872.

&&

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

&&

$$

Public/Marine/Fire...BT
Aviation/Nowcasts....CLR
Data Acquisition.....JAM

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