922  
FXUS62 KKEY 260155  
AFDKEY  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE KEY WEST FL  
955 PM EDT TUE APR 25 2017  
   
DISCUSSION
 
   
CURRENTLY
 
 
LOCAL RADARS ARE NOT DETECTING ANY PRECIPITATION ECHOES BUT  
CONSIDERABLE FALSE ECHOES IN THE FORM OF CHAFF ARE COVERING OUR  
REGION. UNDER MOSTLY CLEAR TO PARTLY CLOUDY SKIES AND LIGHT WINDS,  
TEMPERATURES RANGE BETWEEN 70 AND 74 DEGREES IN THE FLORIDA KEYS.  
SURFACE WISE, A RIDGE OF HIGH PRESSURE IS ALIGNED FROM THE NORTH  
CENTRAL GULF OF MEXICO TO ACROSS OUR AREA. ON OUR MARINE DISTRICT,  
WINDS ARE WEST TO NORTHWEST AT LESS THAN 10 KNOTS. OTHERWISE, OUR  
EVENING SOUNDING REVEALS SCANT MOISTURE (PWAT .89 INCHES) WITH A  
COUPLE OF STABLE LAYERS WITH THE MOST PRONOUNCED 4 DEGREE C ONE  
LOCATED AT 800 MB. LIGHT NORTHWEST WINDS BACK AND INCREASE QUICKLY  
ABOVE 925 MB.  
 

 
   
SHORT TERM
 
(REST OF TONIGHT)  
DESPITE A SUBTLE MID AND UPPER LEVEL DISTURBANCE IN THE EASTERN  
GULF OF MEXICO MIGRATING ACROSS OUR AREA TONIGHT, EXTREMELY DRY  
AIR SHOULD PRECLUDE ANY SHOWER ACTIVITY. LIGHT AND VARIABLE WINDS  
EARLY TONIGHT WILL ALLOW TEMPERATURES TO DROP INTO THE MID AND  
UPPER 60S IN SOME INTERIOR LOCATIONS OF THE LARGER ISLANDS,  
ELSEWHERE, LOW TEMPERATURES WILL AVERAGE IN THE LOWER TO MID 70S.  
 

 
   
MARINE
 
 
LIGHT MOSTLY NORTHWEST WINDS OF 10 KNOTS OR LESS WILL CLOCK AROUND  
TO EAST TO SOUTHEAST ON ALL KEYS COASTAL WATERS BY MORNING.  
 

 
   
AVIATION
 
 
UNTIL 12Z/26TH, VFR CONDITIONS WILL PREVAIL AT THE KEY WEST AND  
MARATHON TERMINALS. WEST TO NORTHWEST WINDS OF LESS THAN 10 KNOTS  
WILL TURN EAST AT SIMILAR SPEEDS OVERNIGHT.  
 

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

 
 

 
 
PUBLIC/MARINE/FIRE...APA  
AVIATION/NOWCASTS....APA  
DATA COLLECTION......VICKERY  
 
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