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Area Forecast Discussion (AFD)

Issued by Key West, FL (KEY)

                            
178 
FXUS62 KKEY 191950
AFDKEY

Area Forecast Discussion
National Weather Service Key West FL
350 PM EDT Thu Apr 19 2018

.DISCUSSION...
Fair weather conditions were enjoyed across the Florida Keys with
high clouds streaming from the west and temperatures near 80 degrees.
Winds became variable near 5 mph over land while marine stations 
reported similar speeds.

.FORECAST...
A high pressure over north-central United States today will slowly
move to the east and the Keys will be under a weak pressure gradient
as a ridge keeps moving east away from us. On Saturday night, a 
low pressure will develop over south central United States and an 
area of higher moisture associated to it will be pushed over the 
southeast US and Florida on Monday. As the low moves to the northeast
toward the Carolinas, a weak front will swing south over the Florida
peninsula, increasing the chances for rain on Tuesday. After its 
passage, a high pressure will build to our north, drying out and 
relaxing the winds for the Keys. Temperatures will remain near 
normal but with lower dew points, it will feel sligtly cooler on 
Wednesday.

&&

.MARINE...
Light and variables winds will continue this afternoon and early
evening. By later tonight and early Friday, winds will be generally
from the north and increasing to near 10 knots. Latest guidance 
show an increase to moderate to maybe fresh breezes from the east on
Saturday night mainly for the open waters of the Straits and 
Gulf. As a high pressure exits the mid-Atlantic coast on Saturday
night, a ridge will extend to its southeast keeping a tight
pressure gradient. After that, winds should relax a little,
bringing seas down as well. No advisory headlines are expected at
this time.

&&

.AVIATION...
Expect VFR conditions to prevail at EYW & MTH through at least 
20/18z. East-southeasterly winds near 5 knots will become light and 
variable overnight.

&&

.CLIMATE...
On this date in Keys Weather History, in 1934, a high temperature of 
89 degrees was recorded in Key West. This set the daily record for 
warmest high temperature for April 19th in the city. Temperature 
records in Key West date back to 1872. 

&&

.PRELIMINARY POINT TEMPS/POPS...
Key West  72  84  73  85 / 0 -  10 10 
Marathon  72  86  73  86 / 0 -  10 10 

&&

.KEY WATCHES/WARNINGS/ADVISORIES...
FL...None.
GM...None.
&&

$$

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

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