728
FNUS72 KJAX 210535
FWSJAX
SPOT FORECAST FOR GRWMA 40 38S 35S...FLORIDA FISH AND WILDLIFE CONSERVATION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
135 AM EDT TUE JUL 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 EDT ON JULY 21.
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
BREEZY SOUTH WINDS WILL DEVELOP AS WINDS REMAIN ELEVATED BETWEEN
THE BERMUDA HIGH TO THE EAST AND TROPICAL STORM BERTHA IN THE
NORTHERN GULF. BETWEEN 1300 AND 1500 WINDS WILL SHIFT SOUTH-
SOUTHEAST AS THE MASKED SEA BREEZE MOVES INLAND BEYOND THE GUANA
RIVER WMA. A FEW SHOWERS MY DEVELOP ALONG THE SEA BREEZE BUT THE
BEST CHANCE FOR THUNDERSTORMS WILL BE DURING THE 1600-1800 WINDOW
WITH SHOWERS POSSIBLY LINGERING THROUGH 2100. WITH STORMS TODAY
EXPECT WINDS TO BE STRONGER THAN THE TYPICAL SEA BREEZE
THUNDERSTORM. GUSTS WITH STORMS WILL BE CHAOTIC AND MAY EVEN REACH
40-50 MPH WITH WHAT LOOKS TO BE A MARGINAL STORM. A DRIER AIRMASS
WILL LEAD TO HOT, DRY, AND BREEZY CONDITIONS THROUGH WEDNESDAY
AFTERNOON.
TODAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........40 40 23 11 22 8 15 8 22 38 43 51
WEATHER COV..... SCH SCH CHC
WEATHER TYPE.... RW RW RW
TSTM COV........ SCH SCH CHC
CHC OF PCPN (%).0 0 0 0 0 0 10 10 10 20 20 30
CHC OF THDR (%).0 0 0 0 0 0 10 10 10 20 20 30
TEMP............78 78 79 82 86 88 90 91 91 90 89 88
RH..............85 85 88 82 72 68 66 64 64 66 68 70
HEAT INDEX (F)..78 78 79 89 96 99 103 105 105 103 102 100
WIND CHILL (F)..78 78 79 89 96 99 103 105 105 103 102 100
20 FT WIND DIR..S S S S S S S S SE SE SE SE
20 FT WIND SPD..13 13 14 14 14 14 15 15 16 17 18 18
20 FT WIND GUST.17 18 18 18 20 20 20 21 22 23 23 23
MIX HGT (KFT)...0.9 1.1 1.3 1.9 2.5 3.1 2.8 2.5 2.1 2.1 2.0 1.9
TRANSP WIND DIR.S S S S S S S S SE SE SE SE
TRANSP WIND SPD.16 17 17 18 18 20 20 20 21 21 21 21
DISPERSION IDX..14 15 29 42 53 62 60 57 53 52 51 49
LVORI...........4 4 3 3 2 2 1 2 2 2 2 2
TONIGHT
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........53 57 43 36 51 31 27 23 29 12 12 20
WEATHER COV.....CHC SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW
TSTM COV........CHC SCH SCH SCH SCH
CHC OF PCPN (%).30 20 20 20 20 10 10 10 10 10 0 0
CHC OF THDR (%).30 20 20 20 20 10 10 10 0 0 0 0
TEMP............85 84 83 82 81 82 81 80 79 79 78 78
RH..............77 77 77 82 82 79 82 82 85 82 85 85
HEAT INDEX (F)..96 93 90 89 87 89 87 84 79 79 78 78
WIND CHILL (F)..96 93 90 89 87 89 87 84 79 79 78 78
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..18 17 16 15 14 13 12 10 10 10 10 10
20 FT WIND GUST.23 21 18 17 16 16 15 15 15 15 15 15
MIX HGT (KFT)...1.7 1.4 1.2 1.0 0.9 0.7 0.7 0.6 0.6 0.6 0.6 0.6
TRANSP WIND DIR.S S S S S S S S S S S S
TRANSP WIND SPD.20 18 17 17 16 15 15 15 15 15 14 14
DISPERSION IDX..43 36 16 14 13 12 12 11 11 11 10 10
LVORI...........2 3 3 4 4 4 4 4 4 4 4 4
WEDNESDAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........31 37 24 28 37 22 24 13 14 20 26 42
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............77 77 79 82 87 90 92 93 92 92 92 90
RH..............87 87 88 82 72 66 62 60 62 62 62 64
HEAT INDEX (F)..77 77 79 89 99 103 106 107 106 106 106 102
WIND CHILL (F)..77 77 79 89 99 103 106 107 106 106 106 102
20 FT WIND DIR..S S S S S S S SE SE SE SE SE
20 FT WIND SPD..10 10 10 10 12 12 13 13 14 15 16 17
20 FT WIND GUST.14 14 14 14 15 15 16 16 17 18 20 21
MIX HGT (KFT)...0.8 1.0 1.2 1.9 2.6 3.3 3.3 3.3 3.2 3.0 2.7 2.5
TRANSP WIND DIR.S S S S S S S S S S S SE
TRANSP WIND SPD.13 14 14 14 14 14 14 15 15 16 17 17
DISPERSION IDX..10 10 21 32 42 51 51 51 48 47 48 49
LVORI...........5 5 4 3 3 2 2 2 2 2 2 2
FORECASTER...BOOTHE
REQUESTED BY...CAITLYN CRAWFORD
TYPE OF REQUEST...PRESCRIBED
.TAG 2617806.0/JAX
.DELDT 07/21/26
.FORMATTERVERSION 2.0.0
.EMAIL CAITLYN.CRAWFORD@MYFWC.COM
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