875  
FNUS72 KMFL 171228  
FWSMFL  
 
SPOT FORECAST FOR BRIGHTON RX...SEMINOLE TRIBE OF FLORIDA  
NATIONAL WEATHER SERVICE MIAMI FL  
828 AM EDT WED SEP 17 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON SEPTEMBER 17.  
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
 
DRY CONDITIONS THIS MORNING WITH LIGHT EASTERLY WINDS  
EXPECTED WHICH WILL LEAD TO POOR DISPERSIONS. SCATTERED THUNDERSTORMS  
THIS AFTERNOON MAY RESULT IN FREQUENT LIGHTNING, HEAVY RAIN, AND ERRATIC  
WINDS.  
   
REST OF TODAY
 
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT). CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE LATE MORNING  
AND EARLY AFTERNOON, THEN SHOWERS AND  
THUNDERSTORMS LIKELY LATE IN THE AFTERNOON.  
CHANCE OF PCPN......60 PERCENT.  
MAX TEMPERATURE.....AROUND 84.  
MIN HUMIDITY........77 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING EAST AROUND 5 MPH LATE IN  
THE AFTERNOON. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS.  
MIXING HEIGHT.......2100 FT AGL.  
TRANSPORT WINDS.....EAST 6 TO 8 MPH.  
DISPERSION INDEX....11 INCREASING TO 19 IN THE AFTERNOON.  
LVORI...............5.  
 
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........60 68 79 87 87 87 87 85 86  
WEATHER COV.....CHC CHC CHC CHC CHC CHC LKY LKY LKY  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW  
TSTM COV........CHC CHC CHC CHC CHC CHC LKY LKY LKY  
CHC OF PCPN (%).50 50 50 50 50 50 60 60 60  
TEMP............77 81 82 82 82 82 83 82 82  
RH..............97 88 85 82 82 82 77 79 79  
20 FT WIND DIR..E E E E E SE E E E  
20 FT WIND SPD..3 3 3 3 3 5 5 5 5  
20 FT WIND GUST.9 9 9 9 9 10 12 12 14  
MIX HGT (KFT)...0.9 1.3 1.8 2.0 2.1 2.1 2.1 1.9 1.6  
TRANSP WIND DIR.E E E E E E E E NE  
TRANSP WIND SPD.6 6 6 7 7 8 8 8 8  
DISPERSION IDX..7 10 14 17 19 21 20 19 16  
LVORI...........6 5 4 3 3 3 3 3 4  
   
TONIGHT
 
 
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SHOWERS AND  
THUNDERSTORMS LIKELY IN THE EVENING, THEN  
CHANCE OF SHOWERS AND SLIGHT CHANCE OF  
THUNDERSTORMS OVERNIGHT.  
CHANCE OF PCPN......70 PERCENT.  
MIN TEMPERATURE.....AROUND 72.  
MAX HUMIDITY........97 PERCENT.  
WIND (20 FT)........EAST WINDS AROUND 5 MPH EARLY IN THE EVENING  
BECOMING LIGHT. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS IN THE EVENING AND  
OVERNIGHT. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS AFTER 3 AM.  
MIXING HEIGHT.......400 FT AGL.  
TRANSPORT WINDS.....EAST 5 TO 8 MPH.  
DISPERSION INDEX....7.  
LVORI...............6.  
 
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........92 89 89 85 85 78 73 68 68 66 63 64  
WEATHER COV.....LKY LKY CHC CHC CHC SCH SCH SCH CHC SCH  
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW  
TSTM COV........LKY LKY CHC CHC CHC SCH SCH SCH SCH  
CHC OF PCPN (%).70 60 40 30 30 20 20 20 10 10 30 20  
TEMP............79 77 75 75 75 74 74 74 74 73 74 73  
RH..............88 90 97 94 94 97 97 93 93 97 93 97  
20 FT WIND DIR..E E E E E NE NE NE N NE N NE  
20 FT WIND SPD..5 5 3 3 3 3 3 3 3 3 3 3  
20 FT WIND GUST.14 13 13 12 10 10 9 9 9 9 9 10  
MIX HGT (KFT)...1.2 0.8 0.5 0.4 0.4 0.5 0.4 0.4 0.4 0.4 0.4 0.5  
TRANSP WIND DIR.NE E E E E E E E E E E E  
TRANSP WIND SPD.7 7 7 7 7 7 7 6 5 6 7 8  
DISPERSION IDX..11 6 5 4 4 4 3 3 3 3 4 5  
LVORI...........4 5 7 6 6 7 7 7 7 7 7 7  
   
THURSDAY
 
 
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). CHANCE OF SHOWERS  
AND THUNDERSTORMS IN THE MORNING, THEN SHOWERS  
AND THUNDERSTORMS LIKELY IN THE AFTERNOON.  
CHANCE OF PCPN......60 PERCENT.  
MAX TEMPERATURE.....AROUND 86.  
MIN HUMIDITY........74 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING NORTHEAST 5 TO 8 MPH IN  
THE LATE MORNING AND AFTERNOON. GUSTY AND  
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS LATE  
IN THE MORNING.  
MIXING HEIGHT.......3800 FT AGL.  
TRANSPORT WINDS.....EAST 8 TO 13 MPH.  
DISPERSION INDEX....8 INCREASING TO 38.  
LVORI...............6.  
 
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY (%).........68 67 49 54 64 64  
WEATHER COV.....S CHC CHANCE CHANCE CHANCE LIKELY LIKELY  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........ CHANCE LIKELY LIKELY  
CHC OF PCPN (%).20 30 30 30 60 60  
TEMP............72 73 79 83 84 83  
RH..............100 100 91 80 74 74  
20 FT WIND DIR..NE NE NE NE E NE  
20 FT WIND SPD..3 3 5 5 6 8  
20 FT WIND GUST.10 10 10 13 14 16  
MIX HGT (FT)....400 600 1400 2700 3800 3200  
TRANSPORT WIND..E 8 NE 8 E 9 E 10 E 10 E 13  
DISPERSION IDX..6 6 17 35 39 40  
LVORI...........8 7 4 3 3 3  
 

 
FORECASTER...FISHER  
REQUESTED BY...MIKE LIGHTSEY  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2522084.0/MFL  
.DELDT 09/17/25  
.FORMATTERVERSION 2.0.0  
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab FL Page Main Text Page