FNUS72 KJAX 261211

FWSJAX



Spot Forecast for FCSF RX...Florida Forest Service

National Weather Service Jacksonville FL

811 AM EDT Thu Jun 26 2025



Forecast is based on ignition time of 0800 EDT on June 26. 

If conditions become unrepresentative, contact the National Weather

Service.



Please contact our office at (904) 741-4370 if you have questions

or concerns with this forecast.



.DISCUSSION...Light and variable winds early this morning around 

1-3 mph, then easterly winds increase through midday. East winds

increase between 1-3 pm as the east coast sea breeze moves across

the burn site with gusts nearing 15 mph into the early evening 

trailing the sea breeze. There is a 20% of afternoon and early 

evening showers or a thunderstorm near the burn due to an 

unstable airmass. Thunderstorm wind gusts can be erratic. 

Heat index values near 100 degrees early afternoon. Generally 

good dispersion this afternoon. 



.REST OF TODAY...

TIME (EDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 

Sky (%).........56  51  47  47  45  51  52  49  44  43  

Weather cov.....                    SCH SCH SCH SCH SCH 

Weather type....                    RW  RW  RW  RW  RW  

Tstm cov........                    SCH SCH SCH SCH SCH 

Chc of pcpn (%).0   0   10  10  10  20  20  20  20  20  

Chc of thdr (%).0   0   0   0   0   10  20  20  20  20  

Temp............78  82  86  88  91  93  93  93  91  91  

RH..............85  74  63  57  52  47  47  47  50  50  

Heat index (F)..76  84  90  94  97  99  99  98  96  94  

20 FT wind dir..S   S   S   SE  SE  E   E   E   E   E   

20 FT wind spd..2   2   2   3   5   6   6   8   9   10  

20 FT wind gust.3   3   3   6   7   9   9   13  14  16  

Mix hgt (kft)...0.9 1.7 2.7 3.7 4.6 5.3 5.6 5.5 5.0 4.2 

Transp wind dir.S   S   SE  SE  SE  SE  E   E   E   E   

Transp wind spd.7   7   6   6   6   7   7   9   10  12  

Dispersion idx..8   15  21  27  33  40  46  54  56  51  

LVORI...........5   4   3   2   1   1   1   1   1   1   



.TONIGHT...

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 

Sky (%).........43  43  45  38  37  44  38  35  30  25  30  29  

Weather cov.....SCH SCH SCH SCH                                 

Weather type....RW  RW  RW  RW                                  

Tstm cov........SCH SCH SCH SCH                                 

Chc of pcpn (%).20  20  20  20  10  10  10  10  10  10  0   0   

Chc of thdr (%).10  20  20  10  10  10  0   0   0   0   0   10  

Temp............90  88  84  81  80  78  77  75  75  73  72  72  

RH..............50  55  65  72  74  79  82  87  84  90  93  93  

Heat index (F)..95  91  89  85  79  78  77  76  75  74  73  73  

20 FT wind dir..E   SE  SE  SE  SE  S   S   S   S   N   N   N   

20 FT wind spd..9   9   7   6   5   3   2   2   1   0   0   0   

20 FT wind gust.14  14  10  9   7   6   3   3   2               

Mix hgt (kft)...3.0 1.7 0.7 0.4 0.4 0.5 0.5 0.5 0.5 0.4 0.4 0.4 

Transp wind dir.SE  SE  SE  SE  S   S   S   S   S   SW  SW  SW  

Transp wind spd.12  12  12  10  9   8   8   7   6   6   5   5   

Dispersion idx..46  29  6   5   4   4   3   3   3   2   2   2   

LVORI...........1   2   3   3   4   4   5   5   6   6   6   7   



.FRIDAY...

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 

Sky (%).........31  20  11  17  16  15  27  39  51  51  52  52  

Weather cov.....                        SCH SCH CHC CHC LKY LKY 

Weather type....                        RW  RW  RW  RW  RW  RW  

Tstm cov........                        SCH SCH CHC CHC LKY LKY 

Chc of pcpn (%).0   0   0   10  10  10  20  20  30  50  60  60  

Chc of thdr (%).0   0   0   0   0   20  20  20  70  70  70  70  

Temp............71  72  76  80  83  88  91  93  93  92  91  89  

RH..............97  97  87  79  72  59  54  49  49  51  52  56  

Heat index (F)..73  74  76  79  90  94  96  97  97  97  94  93  

20 FT wind dir..N   SW  SW  SW  W   W   SW  SW  SW  S   S   S   

20 FT wind spd..0   1   1   2   2   3   3   5   5   5   5   5   

20 FT wind gust.    2   3   3   5   7   8   8   8   9   10  10  

Mix hgt (kft)...0.4 0.6 1.0 1.8 2.9 4.1 5.5 6.7 7.2 6.5 5.1 3.7 

Transp wind dir.SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  S   

Transp wind spd.5   5   6   6   6   6   6   7   7   7   8   8   

Dispersion idx..2   2   7   14  22  30  40  55  59  57  48  39  

LVORI...........7   7   5   4   3   2   1   1   1   1   1   1   



$$

Forecaster...Enyedi

Requested by...Sal Dalu

Type of request...PRESCRIBED

.TAG 2516719.0/JAX

.DELDT 06/26/25

.FormatterVersion 2.0.0

.EMAIL salvatore.dalu@fdacs.gov

