661  
FXUS62 KKEY 090209  
AFDKEY  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE KEY WEST FL  
1009 PM EDT TUE JUL 8 2025  
   
..NEW DISCUSSION, MARINE, AVIATION
 
 
   
DISCUSSION
 
 
ISSUED AT 1019 PM EDT TUE JUL 8 2025  
A NUMBER OF LONG LIVED THUNDERSTORMS PULSED UP AND DOWN OVER THE  
WATERS OF THE FLORIDA KEYS THIS EVENING. AN IMPRESSIVE  
THUNDERSTORM FORMED OFF A CLOUD LINE NEAR CAPE SABLE BEFORE  
SUNSET, AND ANOTHER CLUSTER OF LONG LIVED THUNDERSTORMS DEVELOPED  
SOUTHWEST OF MARCO ISLAND. ASIDE FROM THESE CLUSTERS THE KBYX  
RADAR SHOWED CONDITIONS WERE MOSTLY CLEAR ACROSS THE CWA. GOES-E  
SATELLITE OBSERVATIONS HIGHLIGHT THE LARGE EXPANSE OF CIRRUS  
CLOUDS FROM THE AFOREMENTIONED THUNDERSTORMS. MORE NOTABLY, MIMIC-  
TPW SATELLITE RETURNS SAMPLED PWAT IN THE 1.8-1.9 INCH RANGE,  
WHICH WAS SUPPORTED BY THE 00Z KKEY SOUNDING.  
 
IN THE SHORT TERM, RAIN CHANCES WILL REMAIN AT 20 PERCENT ACROSS  
THE ISLAND CHAIN WITH GENTLE TO MODERATE EASTERLY BREEZES.  
TEMPERATURES ARE ON TRACK TO STAY IN THE LOWER 80S OUTSIDE OF  
SHOWERS. HOWEVER, WATER VAPOR IMAGERY INDICATES A LARGE PLUME OF  
MOISTURE APPROACHING THE KEYS FROM THE SOUTHEAST AHEAD OF AN  
EASTERLY WAVE. EXACTLY WHEN SHOWER COVERAGE INCREASES WILL DEPEND  
ON THE SPEED OF THE WAVE AND HOW IT INTERACTS WITH LINGERING  
BOUNDARIES OVER THE STRAITS. EITHER WAY, EXPECT THE ATMOSPHERE TO  
BECOME MORE ACTIVE TOMORROW.  
 

 
   
MARINE
 
 
ISSUED AT 1019 PM EDT TUE JUL 8 2025  
NO WATCHES, WARNINGS, OR ADVISORIES ARE CURRENTLY IN EFFECT FOR  
THE COASTAL WATERS OF THE FLORIDA KEY. FROM SYNOPSIS, WHILE THE  
ATLANTIC HIGH WILL MAINTAIN GENTLE TO MODERATE BREEZES ACROSS THE  
FLORIDA KEYS TONIGHT, BREEZES WILL SLACKEN TO GENTLE IN THE EARLY  
MORNING. AN EASTERLY WAVE WILL APPROACH THE FLORIDA KEYS ON  
WEDNESDAY ALONG WITH A PLUME OF DEEP TROPICAL MOISTURE. EXPECT  
INCREASED SHOWER COVERAGE FROM WEDNESDAY NIGHT THROUGH THE  
WEEKEND.  
 

 
   
AVIATION
 
 
(00Z TAFS)  
ISSUED AT 1019 PM EDT TUE JUL 8 2025  
VFR CONDITIONS WILL PREVAIL AT EYW AND MTH FOR THE 00Z TAF  
PERIOD. EXPECT NEAR SURFACE WINDS TO VEER EASTERLY AFTER 18Z.  
CLOUDS AND SHOWER COVERAGE WILL INCREASE TOMORROW AFTERNOON, AND  
CLOUD LINES WILL BE A CONCERN AFTER 18Z.  
 

 
   
KEY WATCHES/WARNINGS/ADVISORIES
 
 
FL...NONE.  
GM...NONE.  

 
 

 
 
PUBLIC/MARINE/FIRE...AJP  
AVIATION/NOWCASTS....AJP  
DATA ACQUISITION.....DR  
 
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