483
FNUS72 KJAX 180903
FWSJAX
SPOT FORECAST FOR FCSF RX FIRE...FLORIDA FOREST SERVICE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
503 AM EDT SAT JUL 18 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 EDT ON JULY 18.
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
SIMILAR TO YESTERDAY, THERE IS LITTLE CHANCE (UNDER
10%) OF SHOWERS/STORMS NEAR THE BURN AREA TODAY AS POCKET OF DRY
AIR PUSHES IN FROM THE SOUTH LATER THIS MORNING, CAPPING THE
POTENTIAL FOR RAIN. WINDS SHIFT SOUTH TO SOUTH-SOUTHWEST TODAY AND
WILL BE A BIT STRONGER. THE ATLANTIC SEA BREEZE WILL STRUGGLE TO
MAKE IT ALL THE WAY TO FCSF AREA TODAY AND CONFIDENCE IS HIGHER
THAT IT WILL STALL RIGHT ALONG I-95. GOOD DISPERSION TODAY AND
THERE IS POTENTIAL FOR HUMIDITY TO PUSH LOWER THAN FORECAST AS LOW
AS 45% AS DRIER AIR ALOFT MIXES TOWARD THE SURFACE. DRY AIR WILL
AGAIN LIMIT THE POTENTIAL FOR RAIN INTO SUNDAY AS WELL BUT
INCREASING TROPICAL MOISTURE IS LIKELY TO OVERSPREAD THE AREA BY
MONDAY FUELING HIGHER CHANCES FOR THUNDERSTORMS.
REST OF TODAY
TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........14 15 11 17 11 24 23 22 22 23
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 10 10 10 10
TEMP............77 80 85 88 89 91 93 93 94 93
RH..............90 88 75 66 64 58 52 54 51 52
HEAT INDEX (F)..77 86 94 98 99 101 102 103 103 102
20 FT WIND DIR..S S S S S S S S S S
20 FT WIND SPD..2 3 5 6 6 6 7 8 9 9
20 FT WIND GUST.5 6 7 9 10 10 12 12 14 14
MIX HGT (KFT)...0.9 1.5 2.2 3.1 4.1 4.8 5.5 5.7 5.1 5.5
TRANSP WIND DIR.S S S S S S S S S S
TRANSP WIND SPD.7 8 9 9 10 10 12 12 12 12
DISPERSION IDX..6 10 18 25 37 43 55 57 51 55
LVORI...........6 5 3 3 1 1 1 1 1 1
TONIGHT
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........27 14 26 18 12 14 27 26 20 9 9 14
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).10 10 10 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).10 10 10 0 0 0 0 0 0 0 0 0
TEMP............92 90 86 83 81 80 80 79 78 78 77 77
RH..............54 58 65 72 77 79 79 82 85 82 85 85
HEAT INDEX (F)..101 98 93 89 86 84 84 79 78 78 77 77
20 FT WIND DIR..S SW SW SW SW SW SW SW SW SW S S
20 FT WIND SPD..8 7 6 5 5 3 3 2 2 2 2 2
20 FT WIND GUST.14 12 10 8 7 7 7 6 6 6 6 6
MIX HGT (KFT)...4.6 3.2 1.5 0.5 0.5 0.5 0.5 0.5 0.5 0.4 0.4 0.4
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW SW S SW
TRANSP WIND SPD.12 12 9 9 8 8 8 8 7 6 6 6
DISPERSION IDX..46 32 12 4 3 3 3 3 3 2 2 2
LVORI...........1 1 2 3 3 4 4 5 5 5 5 5
SUNDAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........20 29 13 15 25 34 33 41 42 44 40 52
WEATHER COV..... CHC
WEATHER TYPE.... RW
TSTM COV........ CHC
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 10 30
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 10 30
TEMP............76 76 78 81 85 87 90 91 92 93 91 91
RH..............87 87 88 82 72 68 60 58 54 54 58 56
HEAT INDEX (F)..76 76 78 87 94 96 99 101 101 103 101 100
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..2 2 2 3 6 7 8 8 8 8 9 8
20 FT WIND GUST.6 5 6 8 10 12 13 14 14 15 15 15
MIX HGT (KFT)...0.4 0.4 0.9 2.4 3.4 4.2 4.9 5.3 5.6 5.0 4.9 4.1
TRANSP WIND DIR.SW S S S S S S S S S S S
TRANSP WIND SPD.5 5 7 9 12 12 10 10 10 12 12 9
DISPERSION IDX..2 2 5 19 34 42 44 48 50 50 49 33
LVORI...........6 6 6 3 3 1 1 1 1 1 1 1
FORECASTER...BOOTHE
REQUESTED BY...SEAN DOWIE
TYPE OF REQUEST...PRESCRIBED
.TAG 2617611.0/JAX
.DELDT 07/18/26
.FORMATTERVERSION 2.0.0
.EMAIL SEAN.DOWIE@FDACS.GOV
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