902
FNUS72 KJAX 180450
FWSJAX
SPOT FORECAST FOR HICKORY SINK 08.18.26...UNIVERSITY OF FLORIDA
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1250 AM EDT TUE AUG 18 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 EDT ON AUGUST 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.
..EXTREME HEAT WARNING IN EFFECT TODAY
DISCUSSION
THE REGION WILL BE BETWEEN HIGH PRESSURE TO THE SOUTH, AND A FRONTAL
ZONE TO THE NORTH THIS WEEK. THUNDERSTORM CHANCES ARE FORECAST
THIS AFTERNOON AND EVENING, AND AGAIN WEDNESDAY AFTERNOON AND EVENING.
A FEW STRONG STORMS WILL BE POSSIBLE. GUSTY AND ERRATIC WINDS CAN
BE EXPECTED IN AND NEAR STORMS. IT WILL BE ABNORMALLY HOT THIS WEEK.
TODAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........21 21 12 15 9 18 35 51 64 64 66 70
WEATHER COV..... SCH CHC CHC
WEATHER TYPE.... RW RW RW
TSTM COV........ SCH CHC CHC
CHC OF PCPN (%).10 10 10 10 10 10 10 10 10 20 40 50
CHC OF THDR (%).0 0 10 10 10 10 20 30 50 50 50 60
TEMP............80 79 81 86 88 91 93 94 95 95 95 95
RH..............91 94 91 77 72 66 60 58 54 54 54 54
HEAT INDEX (F)..87 79 89 100 103 109 110 110 110 110 112 112
WIND CHILL (F)..87 79 89 100 103 109 110 110 110 110 112 112
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..2 2 2 5 7 9 9 9 9 10 12 12
20 FT WIND GUST.3 3 3 7 10 14 14 14 14 16 17 17
MIX HGT (KFT)...0.5 0.5 0.5 1.3 2.1 2.9 3.4 3.8 4.3 3.7 3.1 2.5
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.9 9 10 10 12 13 12 12 12 13 14 15
DISPERSION IDX..4 4 10 19 31 45 48 52 56 55 48 42
LVORI...........6 6 5 3 3 1 1 1 1 1 1 1
TONIGHT
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........69 71 72 72 75 67 64 48 42 33 27 26
WEATHER COV.....CHC CHC CHC CHC CHC SCH SCH
WEATHER TYPE....RW RW RW RW RW RW RW
TSTM COV........CHC CHC CHC CHC CHC SCH SCH
CHC OF PCPN (%).50 50 40 30 30 20 20 10 10 10 10 10
CHC OF THDR (%).40 30 10 10 10 10 10 10 0 10 10 0
TEMP............92 88 85 82 81 79 80 79 79 78 77 77
RH..............62 70 80 88 91 97 94 97 97 97 97 94
HEAT INDEX (F)..107 102 97 91 89 79 87 79 79 78 77 77
WIND CHILL (F)..107 102 97 91 89 79 87 79 79 78 77 77
20 FT WIND DIR..W W W W W W W W W W W W
20 FT WIND SPD..12 10 9 8 7 6 6 5 5 3 3 3
20 FT WIND GUST.17 16 14 13 10 9 9 7 7 6 6 6
MIX HGT (KFT)...1.9 1.3 0.8 0.7 0.6 0.5 0.5 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.14 13 10 10 9 8 8 8 8 8 8 8
DISPERSION IDX..33 22 10 9 6 6 5 5 5 3 3 3
LVORI...........1 3 4 4 6 6 6 7 7 8 8 7
WEDNESDAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........24 22 22 34 16 31 36 32 48 65 71 75
WEATHER COV..... SCH CHC LKY CHC
WEATHER TYPE.... RW RW RW RW
TSTM COV........ SCH CHC LKY CHC
CHC OF PCPN (%).10 10 10 10 10 10 10 10 20 50 60 50
CHC OF THDR (%).10 10 10 10 10 10 10 10 20 50 60 50
TEMP............77 77 79 81 86 88 91 93 94 94 95 93
RH..............97 97 94 94 82 77 70 66 62 62 58 62
HEAT INDEX (F)..77 77 79 90 101 105 109 112 112 112 112 109
WIND CHILL (F)..77 77 79 90 101 105 109 112 112 112 112 109
20 FT WIND DIR..W W W NW W W W W W W W W
20 FT WIND SPD..3 3 3 5 5 6 7 7 7 7 7 7
20 FT WIND GUST.6 6 10 10 10 10 12 12 13 13 13 13
MIX HGT (KFT)...0.5 0.6 0.7 1.3 1.9 2.6 3.3 4.1 4.9 3.8 2.7 1.5
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.8 8 8 8 8 8 8 8 8 9 9 10
DISPERSION IDX..3 4 8 14 21 27 34 40 46 36 30 20
LVORI...........7 8 6 5 3 3 3 1 1 1 2 2
FORECASTER...STRUBLE
REQUESTED BY...CULLY LORD
TYPE OF REQUEST...PRESCRIBED
.TAG 2619890.0/JAX
.DELDT 08/18/26
.FORMATTERVERSION 2.0.0
.EMAIL CULLY@UFL.EDU
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