874  
FNUS72 KMLB 211126  
FWSMLB  
 
SPOT FORECAST FOR OFFICE FLATWOODS S...THE NATURE CONSERVANCY  
NATIONAL WEATHER SERVICE MELBOURNE FL  
726 AM EDT TUE JUL 21 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 0700 EDT ON JULY 21.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
 
BREEZY SOUTH WINDS FORECAST TODAY, WITH SPEEDS AROUND 10 TO 15 MPH  
THIS MORNING, INCREASING TO AROUND 15 TO 18 MPH THIS AFTERNOON, WITH  
WIND GUSTS TO 20 TO 25 MPH. THESE WINDS WILL SUPPORT VERY GOOD  
DISPERSION VALUES NEAR THE BURN SITE. NO MINIMUM RH CONCERNS.  
DRIER AIR SETTLES ACROSS THE AREA, KEEPING RAIN AND STORM CHANCES  
NEAR THE BURN SITE LOWER THAN NORMAL, AROUND 30 PERCENT. ANY ACTIVITY  
THAT DOES MANAGE TO DEVELOP WILL DIMINISH INTO THE LATE EVENING HOURS.  
DRY CONDITIONS FORECAST TOMORROW, WITH SHOWER AND STORM CHANCES VERY  
LOW (AROUND 10%), WITH LOWER WIND SPEEDS OF 5 TO 10 MPH AND GENERALLY  
GOOD SMOKE DISPERSION VALUES.  
 
HOT CONDITIONS WILL PREVAIL BOTH TODAY AND TOMORROW, WITH HIGHS IN THE  
MID 90S AND PEAK HEAT INDEX VALUES 102-107F.  
   
REST OF TODAY  
 
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). CHANCE OF SHOWERS  
AND THUNDERSTORMS IN THE AFTERNOON.  
CHANCE OF PCPN......30 PERCENT.  
MAX TEMPERATURE.....AROUND 94.  
MIN HUMIDITY........54 PERCENT.  
WIND (20 FT)........SOUTH WINDS 10 TO 15 MPH IN THE MORNING, INCREASING  
TO 15 TO 18 MPH IN THE AFTERNOON. GUSTY AND ERRATIC  
WINDS EXPECTED NEAR THUNDERSTORMS LATE IN THE  
AFTERNOON.  
MIXING HEIGHT.......2100 FT AGL INCREASING TO 6100 FT AGL.  
TRANSPORT WINDS.....SOUTH 13 TO 20 MPH.  
DISPERSION INDEX....9 INCREASING 67 LATE IN THE MORNING INCREASING TO  
78 DECREASING TO 67 LATE IN THE AFTERNOON  
INCREASING TO 77.  
LVORI...............7 DECREASING TO 1.  
 
TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........26 31 33 29 32 37 29 30 31 37 47  
WEATHER COV..... SCH SCH SCH CHC  
WEATHER TYPE.... RW RW RW RW  
TSTM COV........ SCH SCH SCH CHC  
CHC OF PCPN (%).0 0 0 0 0 10 10 20 20 20 30  
TEMP............75 78 81 85 87 89 91 92 92 93 91  
RH..............97 91 82 75 70 64 60 56 56 54 56  
20 FT WIND DIR..S S S S S S S S S S S  
20 FT WIND SPD..10 12 13 13 13 13 15 15 15 12 10  
20 FT WIND GUST.18 18 21 21 22 22 22 22 21 21 18  
MIX HGT (KFT)...0.5 1.3 2.1 2.9 3.6 4.5 5.4 5.8 5.8 6.1 5.6  
TRANSP WIND DIR.S S S S S S S S S S S  
TRANSP WIND SPD.14 16 18 20 18 20 18 16 15 14 13  
DISPERSION IDX..9 25 47 60 67 74 78 71 67 77 77  
LVORI...........7 4 4 3 3 1 1 1 1 1 1  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING  
MOSTLY CLEAR (20-30 PERCENT). CHANCE OF SHOWERS  
AND THUNDERSTORMS EARLY IN THE EVENING, THEN  
SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS  
THROUGH LATE EVENING.  
CHANCE OF PCPN......20 PERCENT.  
MIN TEMPERATURE.....AROUND 74.  
MAX HUMIDITY........100 PERCENT.  
WIND (20 FT)........SOUTH WINDS 5 TO 8 MPH IN THE EVENING BECOMING  
LIGHT, THEN BECOMING SOUTH AROUND 5 MPH  
OVERNIGHT. GUSTY AND ERRATIC WINDS EXPECTED  
NEAR THUNDERSTORMS EARLY IN THE EVENING.  
MIXING HEIGHT.......3700 FT AGL DECREASING TO 400 FT AGL.  
TRANSPORT WINDS.....SOUTH 6 TO 13 MPH.  
DISPERSION INDEX....51 DECREASING TO 4.  
LVORI...............2 INCREASING TO 6.  
 
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........53 39 37 37 38 40 36 26 12 7 13 7  
WEATHER COV.....CHC SCH SCH SCH  
WEATHER TYPE....RW RW RW RW  
TSTM COV........CHC SCH SCH SCH  
CHC OF PCPN (%).30 20 20 20 10 10 10 0 0 0 0 0  
TEMP............89 88 83 81 80 79 78 78 77 76 76 76  
RH..............59 63 74 79 82 85 88 88 90 90 90 90  
20 FT WIND DIR..S S SE SE S SE S SE SE S S S  
20 FT WIND SPD..8 7 6 5 5 5 5 3 5 5 5 5  
20 FT WIND GUST.17 14 12 9 8 8 7 7 7 8 8 9  
MIX HGT (KFT)...3.7 1.5 0.7 0.5 0.5 0.5 0.5 0.5 0.5 0.4 0.4 0.4  
TRANSP WIND DIR.S S S S S S S S S S S S  
TRANSP WIND SPD.13 10 9 9 7 8 7 7 7 6 7 8  
DISPERSION IDX..51 20 4 4 3 4 3 3 3 3 3 4  
LVORI...........1 2 3 4 5 5 6 6 6 6 6 6  
   
WEDNESDAY  
 
SKY/WEATHER.........SUNNY (10-20 PERCENT).  
CHANCE OF PCPN......10 PERCENT.  
MAX TEMPERATURE.....AROUND 95.  
MIN HUMIDITY........48 PERCENT.  
WIND (20 FT)........SOUTH WINDS 6 TO 8 MPH.  
MIXING HEIGHT.......1900 FT AGL INCREASING TO 6300 FT AGL.  
TRANSPORT WINDS.....SOUTH 7 TO 12 MPH.  
DISPERSION INDEX....6 INCREASING TO 26 LATE IN THE MORNING, THEN  
INCREASING TO 41 LATE IN THE MORNING INCREASING  
TO 52 EARLY IN THE AFTERNOON INCREASING TO 64  
DECREASING TO 51 LATE IN THE AFTERNOON.  
LVORI...............9 DECREASING TO 1.  
 
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........13 13 14 23 13 9 10 13 16 5 12 26  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 10  
TEMP............75 74 77 80 85 87 90 92 93 93 95 93  
RH..............97 100 94 85 72 70 62 56 52 51 48 51  
20 FT WIND DIR..S S S S S S S S S S S S  
20 FT WIND SPD..6 6 6 7 7 7 8 7 7 7 7 7  
20 FT WIND GUST.9 9 9 12 12 13 14 14 14 14 14 14  
MIX HGT (KFT)...0.4 0.4 0.9 1.9 2.7 3.3 4.3 4.9 5.2 6.3 6.2 5.5  
TRANSP WIND DIR.S S S S S S S S S S S S  
TRANSP WIND SPD.8 7 8 10 12 10 10 9 8 9 9 9  
DISPERSION IDX..3 3 9 26 38 44 52 54 50 64 63 51  
LVORI...........8 9 6 4 3 1 1 1 1 1 1 1  
 
 
FORECASTER...WEITLICH  
REQUESTED BY...ADAM PETERSON  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2617857.0/MLB  
.DELDT 07/21/26  
.FORMATTERVERSION 2.0.0  
.EMAIL APETERSON@TNC.ORG  
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