493  
FNUS72 KMLB 170621  
FWSMLB  
 
SPOT FORECAST FOR CC-NW-WEST...SFWMD  
NATIONAL WEATHER SERVICE MELBOURNE FL  
121 AM EST MON NOV 17 2025  
 
FORECAST IS BASED ON IGNITION TIME OF 0700 EST ON NOVEMBER 17.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
 
DRY WEATHER CONTINUES TODAY, DESPITE A WEAK FRONT APPROACHING THE  
AREA. LIGHT NORTHWESTERLY WINDS UP TO 5-8 MPH ARE EXPECTED  
THROUGH EARLY AFTERNOON BEFORE SHIFTING FROM THE NORTH-NORTHEAST AFTER  
2-3 PM. PEAK DISPERSION VALUES SHOULD BECOME GOOD BY MIDDAY WITH  
RH VALUES ONLY DIPPING TO THE 50S (%). PATCHY FOG IS POSSIBLE LATE  
TONIGHT DUE TO LIGHT WINDS AND EXCELLENT RH RECOVERY TO OVER 95%.  
   
REST OF TODAY  
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
CHANCE OF PCPN......0 PERCENT.  
MAX TEMPERATURE.....AROUND 81.  
MIN HUMIDITY........56 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 6 MPH IN  
THE LATE MORNING AND EARLY AFTERNOON, THEN  
SHIFTING TO THE NORTH LATE IN THE AFTERNOON.  
MIXING HEIGHT.......2000 FT AGL INCREASING TO 4400 FT AGL LATE IN  
THE MORNING, THEN DECREASING TO 1100 FT AGL  
LATE IN THE AFTERNOON.  
TRANSPORT WINDS.....NORTHWEST 6 TO 8 MPH SHIFTING TO THE NORTH  
AROUND 8 MPH LATE IN THE AFTERNOON.  
DISPERSION INDEX....6 INCREASING TO 22 LATE IN THE MORNING, THEN  
INCREASING TO 37 LATE IN THE MORNING INCREASING  
TO 38 LATE IN THE AFTERNOON DECREASING TO 12.  
LVORI...............6 DECREASING TO 2.  
 
TIME (EST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........2 2 2 3 3 3 9 12 15 20 12  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0  
TEMP............59 62 70 74 77 79 79 79 80 79 77  
RH..............93 90 74 68 63 59 57 57 56 60 64  
20 FT WIND DIR..W NW NW NW NW NW N N N NE NE  
20 FT WIND SPD..2 3 5 6 6 6 6 6 6 6 5  
20 FT WIND GUST.8 8 9 9 9 9 10 10 10 10 10  
MIX HGT (KFT)...0.4 0.4 0.8 2.0 3.2 4.0 4.4 4.4 4.0 3.3 1.1  
TRANSP WIND DIR.W NW NW NW NW NW NW NW N N N  
TRANSP WIND SPD.7 6 7 8 8 8 8 8 8 8 8  
DISPERSION IDX..4 3 8 22 32 38 41 42 39 33 12  
LVORI...........6 6 3 3 1 1 1 1 1 1 2  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT). PATCHY FOG AFTER  
3 AM.  
CHANCE OF PCPN......10 PERCENT.  
MIN TEMPERATURE.....AROUND 62.  
MAX HUMIDITY........97 PERCENT.  
WIND (20 FT)........LIGHT WINDS.  
MIXING HEIGHT.......400 FT AGL.  
TRANSPORT WINDS.....NORTH 5 TO 8 MPH.  
DISPERSION INDEX....4.  
LVORI...............4 INCREASING TO 8.  
 
TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY (%).........14 7 24 18 21 16  
WEATHER COV..... PATCHY  
WEATHER TYPE....NONE NONE NONE NONE NONE FOG  
TSTM COV........  
CHC OF PCPN (%).0 10 10 10 10 10  
TEMP............75 70 68 66 65 64  
RH..............70 81 87 93 97 97  
20 FT WIND......NE 2 N 2 NW 1 NW 1 NW 1 NW 1  
20 FT WIND GUST.9 7 5 3 3 5  
MIX HGT (FT)....600 400 400 400 400 400  
TRANSPORT WIND..N 8 NE 6 N 5 N 6 N 6 NW 6  
DISPERSION IDX..6 3 2 3 3 3  
LVORI...........3 5 6 6 8 8  
   
TUESDAY  
 
SKY/WEATHER.........SUNNY (20-30 PERCENT). PATCHY FOG EARLY IN THE  
MORNING. SLIGHT CHANCE OF SHOWERS IN THE  
AFTERNOON.  
CHANCE OF PCPN......20 PERCENT.  
MAX TEMPERATURE.....AROUND 82.  
MIN HUMIDITY........60 PERCENT.  
WIND (20 FT)........LIGHT WINDS BECOMING NORTHEAST 5 TO 7 MPH LATE  
IN THE MORNING.  
MIXING HEIGHT.......2200 FT AGL INCREASING TO 3800 FT AGL LATE IN  
THE MORNING.  
TRANSPORT WINDS.....NORTH 6 TO 7 MPH SHIFTING TO THE NORTHEAST 6 TO  
12 MPH IN THE AFTERNOON.  
DISPERSION INDEX....7 INCREASING TO 37.  
LVORI...............9 DECREASING TO 6 EARLY IN THE MORNING, THEN  
DECREASING TO 4 LATE IN THE MORNING DECREASING  
TO 2 LATE IN THE AFTERNOON INCREASING TO 3.  
 
TIME (EST) 6 AM 9 AM NOON 3 PM  
SKY (%).........19 18 25 28  
WEATHER COV.....PATCHY S CHC  
WEATHER TYPE....FOG NONE NONE RNSHWR  
TSTM COV........  
CHC OF PCPN (%).10 10 10 20  
TEMP............63 72 80 80  
RH..............97 81 65 62  
20 FT WIND......NW 2G6 N 2G6 NE 5G10 E 7G13  
MIX HGT (FT)....400 1300 3400 3600  
TRANSPORT WIND..N 7 N 6 NE 6 E 9  
DISPERSION IDX..3 10 26 39  
LVORI...........9 4 3 1  
 
 
FORECASTER...HEIL  
REQUESTED BY...JAMES SCHUETTE  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2526051.0/MLB  
.DELDT 11/17/25  
.FORMATTERVERSION 2.0.0  
.EMAIL JSCHUETT@SFWMD.GOV  
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