433  
FXUS62 KJAX 221314  
AFDJAX  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE JACKSONVILLE FL  
914 AM EDT FRI JUN 22 2018  
   
..HEAT INDEX VALUES 100 TO 105 THIS AFTERNOON
 
 
   
UPDATE
 
RADAR HAS BEEN SHOWING INCREASING COVERAGE OF SHOWERS  
ALONG I-10 CORRIDOR W OF FORECAST AREA...SUPPORTED BY UNSTABLE 12Z  
KTAE SOUNDING. HRRR GUIDANCE NOT PICKING UP ON THIS VERY WELL.  
EXPECT THIS ACTIVITY ALONG WEAK BOUNDARY WILL WORK EASTWARD DURING  
THE DAY...AND HAVE ADJUSTED HOURLY POP/WEATHER GRIDS TO REFLECT  
THIS TREND...WITH SLIGHTLY GREATER COVERAGE ALONG I-10 CORRIDOR  
SLIGHTLY LESSER COVERAGE OF SCATTERED/WIDELY SCATTERED T-STORMS  
N AND S...WITH ACTIVITY REACHING EASTERN COUNTIES MID AFTERNOON  
AND DECREASING IN COVERAGE WHILE MOVING OFFSHORE TOWARD EVENING  
STRONG GUSTY WINDS POSSIBLE WITH STRONGER STORMS THAT DEVELOP.  
 
12Z SOUNDINGS SHOWING SLIGHTLY COOLER TEMPS A FEW THOUSAND FEET  
ABOVE THE GROUND...MAY SUPPORT CURRENT HIGH TEMPS A FEW DEGREES  
ABOVE HOT VALUES FROM YESTERDAY...GENERALLY MID 90S TODAY...WITH  
AFTERNOON HEAT INDEX VALUES 100-105.  
 

 
   
AVIATION
 
VFR CONDITIONS EXPECTED TODAY EXCEPT LOCALLY LOWER  
AROUND SCATTERED AFTERNOON TSRA. HAVE JUST VCTS IN TAFS FOR NOW  
DUE TO EXPECTED COVERAGE...BEST CHANCES APPEAR TO BE AROUND  
KJAX/KVQQ/KCRG AND MAY CONSIDER TEMPO GROUP FOR 18Z TAFS.  
 

 
   
MARINE
 
SYNOPTIC PATTERN REMAINS THE SAME WITH SURFACE HIGH PRESSURE  
TO THE SOUTH AND LOW PRESSURE TO THE NORTH, RESULTING IN WESTERLY  
TO SOUTHERLY FLOW. WITH THE OFFSHORE FLOW, SURF HEIGHTS REMAIN  
LOW ALONG WITH THE RISK OF RIP CURRENTS.  
 
RIP CURRENTS: LOW RISK OF RIP CURRENTS.  
 

 
   
PRELIMINARY POINT TEMPS/POPS
 
 
AMG 94 75 95 74 / 20 10 20 10  
SSI 92 78 92 77 / 30 10 30 10  
JAX 94 76 96 74 / 40 10 30 20  
SGJ 93 77 93 75 / 30 10 30 10  
GNV 93 75 94 73 / 40 10 20 0  
OCF 92 76 92 73 / 30 20 30 0  
 

 
   
JAX WATCHES/WARNINGS/ADVISORIES
 
 
FL...NONE.  
GA...NONE.  
AM...NONE.  

 
 

 
 
WOLF/ELSENHEIMER  
 
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