858
FNUS72 KJAX 280410
FWSJAX
SPOT FORECAST FOR OSBS G-7 G-5A G-6A...UNIVERSITY OF FLORIDA
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1210 AM EDT TUE JUL 28 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON JULY 28.
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.
...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT
THIS EVENING...
DISCUSSION
A FRONTAL BOUNDARY WILL SINK SOUTH TOWARD THE AREA TODAY, AND REACH
SE GA TONIGHT THROUGH WEDNESDAY. DAILY THUNDERSTORM CHANCES,
MAINLY IN THE AFTERNOON AND EVENING HOURS. HEAT INDICES IN THE
ADVISORY RANGE CAN BE EXPECTED TODAY AND WEDNESDAY.
REST OF TODAY
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........47 46 45 45 48 52 55 59 62
WEATHER COV..... SCH CHC CHC CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW RW
TSTM COV........ SCH CHC CHC CHC CHC CHC CHC
CHC OF PCPN (%).10 10 20 30 30 30 30 50 50
CHC OF THDR (%).0 0 10 20 20 30 30 40 50
TEMP............83 88 91 94 96 97 97 95 93
RH..............82 72 66 58 53 50 50 53 56
HEAT INDEX (F)..92 102 106 109 110 110 110 107 105
20 FT WIND DIR..W W W W W SW SW SW SW
20 FT WIND SPD..5 7 8 8 8 9 9 10 12
20 FT WIND GUST.7 10 13 13 13 14 14 16 17
MIX HGT (KFT)...1.3 2.0 2.8 3.7 4.6 5.6 4.7 3.9 3.1
TRANSP WIND DIR.W W W W SW SW SW SW SW
TRANSP WIND SPD.6 7 7 7 8 8 9 10 12
DISPERSION IDX..10 19 25 32 42 49 50 49 40
LVORI...........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 (%).........59 50 47 45 42 38 34 35 37 35 35 36
WEATHER COV.....CHC SCH
WEATHER TYPE....RW RW
TSTM COV........CHC SCH
CHC OF PCPN (%).30 20 10 10 10 10 10 10 0 0 0 0
CHC OF THDR (%).30 10 10 0 0 0 0 0 0 0 0 0
TEMP............92 90 87 84 82 81 80 79 78 78 78 78
RH..............58 62 68 77 82 85 88 91 94 94 97 97
HEAT INDEX (F)..103 101 96 93 89 87 86 79 78 78 78 78
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..12 10 9 8 7 7 8 8 8 8 8 8
20 FT WIND GUST.17 16 14 13 10 10 13 13 13 13 13 13
MIX HGT (KFT)...2.4 1.8 1.1 0.9 0.7 0.5 0.5 0.5 0.5 0.5 0.5 0.5
TRANSP WIND DIR.SW SW SW SW W W W W W W W W
TRANSP WIND SPD.12 12 12 12 12 12 12 12 13 12 12 12
DISPERSION IDX..34 26 10 10 8 7 7 7 7 7 7 7
LVORI...........1 2 3 3 4 4 5 5 6 6 6 7
WEDNESDAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........44 51 52 29 31 38 45 45 58 52 45 47
WEATHER COV..... SCH CHC SCH
WEATHER TYPE.... RW RW RW
TSTM COV........ SCH CHC SCH
CHC OF PCPN (%).0 0 0 0 0 0 0 10 20 30 20 10
CHC OF THDR (%).0 0 0 0 0 0 0 10 20 30 20 10
TEMP............77 78 80 85 89 92 94 96 97 97 96 94
RH..............100 97 94 82 75 68 62 58 55 53 55 58
HEAT INDEX (F)..77 78 87 98 106 111 112 115 114 113 111 109
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..8 8 9 12 12 12 13 13 13 14 14 15
20 FT WIND GUST.13 13 14 20 20 18 20 20 21 21 22 23
MIX HGT (KFT)...0.8 1.1 1.3 2.1 2.9 3.6 4.3 4.9 5.6 4.9 4.2 3.5
TRANSP WIND DIR.W W W W W W W W W W SW SW
TRANSP WIND SPD.13 14 14 14 14 14 14 14 15 15 16 17
DISPERSION IDX..11 12 25 37 45 51 54 57 63 62 61 58
LVORI...........7 7 5 3 3 1 1 1 1 1 1 1
FORECASTER...STRUBLE
REQUESTED BY...RACHEL GARNER
TYPE OF REQUEST...PRESCRIBED
.TAG 2618450.0/JAX
.DELDT 07/28/26
.FORMATTERVERSION 2.0.0
.EMAIL R.GARNER@UFL.EDU
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