514  
FNUS72 KMFL 180839  
FWSMFL  
 
NEW SPOT FORECAST FOR PINE GLADES 6-SE...PALM BEACH COUNTY ERM  
NATIONAL WEATHER SERVICE MIAMI FL  
439 AM EDT FRI AUG 18 2017  
 
FORECAST IS BASED ON IGNITION TIME OF 0800 EDT ON AUGUST 18.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (305) 229-4522, IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
HIGH PRESSURE OVER SOUTH FLORIDA WILL BRING LIGHT EASTERLY FLOW  
OVER THE SPOT THIS AFTERNOON. DISPERSION VALUES WILL BE POOR TO  
FAIR. SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP  
SEVERAL MILES INLAND FROM THE COAST EARLY THIS AFTERNOON AND MOVE  
TOWARDS THE INTERIOR DURING THE LATE AFTERNOON. SOME OF THESE  
STORMS COULD PRODUCE GUSTY AND ERRATIC WINDS. HOWEVER,  
THUNDERSTORM CHANCES AND WINDS WILL DWINDLE THIS EVENING. AN  
APPROACHING LOW PRESSURE SYSTEM APPROACHING FROM THE EAST WILL  
BRING A MUCH HIGHER CHANCE FOR WIDESPREAD RAIN SATURDAY AFTERNOON  
THROUGH SUNDAY.  
   
TODAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). A CHANCE OF  
SHOWERS AND THUNDERSTORMS EARLY IN THE  
AFTERNOON. A SLIGHT CHANCE OF SHOWERS AND  
THUNDERSTORMS LATE IN THE AFTERNOON.  
MAX TEMPERATURE.....AROUND 94.  
MIN HUMIDITY........53 PERCENT.  
WIND (20 FT)........LIGHT WINDS...BECOMING EAST 5 TO 8 MPH IN THE  
AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS IN THE AFTERNOON.  
CHANCE OF PCPN......20 PERCENT.  
LAL.................1 UNTIL 1200,...THEN 2 UNTIL 1400,...THEN 3  
UNTIL 1500,...THEN 2.  
MIXING HEIGHT.......300-2200 FT AGL...INCREASING TO 3900-5500 FT  
AGL.  
TRANSPORT WINDS.....SOUTHEAST 1 TO 10 MPH.  
DISPERSION INDEX....3...INCREASING TO 39.  
LVORI...............5.  
 
TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM  
SKY (%).........47 47 47 41 41 41 34 34 34 29 29 29  
WEATHER COV..... CHC CHC CHC SCH SCH SCH SCH SCH  
WEATHER TYPE.... RW RW RW RW RW RW RW RW  
TSTM COV........ CHC CHC CHC SCH SCH SCH SCH SCH  
TEMP............79 83 85 88 90 93 94 93 92 92 91 88  
RH..............94 85 75 67 60 54 53 54 56 56 58 63  
20 FT WIND DIR..S SW SW W SW SE E E E E SE SE  
20 FT WIND DIR..200 220 240 250 210 140 100 100 110 110 120 120  
20 FT WIND SPD..1 1 1 1 2 4 5 6 6 6 5 5  
20 FT WIND GUST. 5 10 10 10 10 10 10 10  
MIX HGT (KFT)...0.3 1.2 2.2 3.1 3.9 4.7 5.5 5.2 4.9 3.9 2.8 1.7  
MIXNG WIND DIR..S S S SE SE SE SE SE SE SE SE SE  
MIXNG WIND SPD..1 2 5 6 7 7 7 8 10 10 10 10  
DISPERSION IDX..1 4 13 24 30 35 39 39 43 42 36 23  
LVORI...........7 4 3 2 2 1 1 1 1 1 1 2  
CHC OF PCPN (%).10 10 10 10 30 30 30 20 20 20 20 20  
LAL.............1 1 1 1 2 2 3 2 2 2 2 2  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). A SLIGHT CHANCE  
OF SHOWERS AND THUNDERSTORMS EARLY IN THE  
EVENING.  
MIN TEMPERATURE.....AROUND 77.  
MAX HUMIDITY........94 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 5 TO 7 MPH EARLY IN THE  
EVENING...BECOMING LIGHT. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE  
EVENING.  
CHANCE OF PCPN......10 PERCENT.  
LAL.................2 UNTIL 2000,...THEN 1.  
MIXING HEIGHT.......1700-2800 FT AGL...DECREASING TO 300-400 FT AGL  
UNTIL JUST AFTER MIDNIGHT.  
TRANSPORT WINDS.....SOUTH 2 TO 10 MPH...BECOMING NORTH 1 TO 2 MPH  
AFTER MIDNIGHT.  
DISPERSION INDEX....36...DECREASING TO 3.  
LVORI...............4.  
   
SATURDAY
 
 
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). A CHANCE OF  
SHOWERS IN THE MORNING. A CHANCE OF  
THUNDERSTORMS THROUGH THE DAY. SHOWERS LIKELY  
IN THE AFTERNOON.  
MAX TEMPERATURE.....AROUND 92.  
MIN HUMIDITY........60 PERCENT.  
WIND (20 FT)........LIGHT WINDS...BECOMING EAST 5 TO 8 MPH IN THE  
LATE MORNING AND AFTERNOON. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS EARLY. GUSTY  
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS  
EARLY.  
CHANCE OF PCPN......40 PERCENT.  
LAL.................1 UNTIL 0800,...THEN 2 UNTIL 1100,...THEN 3.  
MIXING HEIGHT.......300-2200 FT AGL...INCREASING TO 3100-4700 FT  
AGL EARLY.  
TRANSPORT WINDS.....EAST 1 TO 10 MPH...INCREASING TO 12 TO 14 MPH  
IN THE AFTERNOON.  
DISPERSION INDEX....5...INCREASING TO 35.  
LVORI...............4.  
 

 
FORECASTER...THOMAS  
REQUESTED BY...HARPER CARROLL  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1714538.0/MFL  
 
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