598
FNUS72 KJAX 170725
FWSJAX
SPOT FORECAST FOR HICKORY SINK FOREST 08.17.26...UNIVERSITY OF FLORIDA
NATIONAL WEATHER SERVICE JACKSONVILLE FL
325 AM EDT MON AUG 17 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 EDT ON AUGUST 17.
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
SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE NEAR OR OVER
THE BURN SITE TODAY, MAINLY DURING THE MID TO LATE AFTERNOON
HOURS. OTHERWISE, WESTERLY SURFACE AND TRANSPORT WINDS WILL
PREVAIL THROUGH MID-AFTERNOON, WITH SURFACE WINDS SHIFTING TO
SOUTHWESTERLY AND BECOMING BREEZY LATE THIS AFTERNOON AS THE
GULF SEA BREEZE BOUNDARY PUSHES EASTWARD ACROSS THE BURN SITE.
SHOWERS AND THUNDERSTORMS SHOULD PUSH EAST OF THE AREA BEFORE
SUNSET THIS EVENING, WITH WESTERLY TRANSPORT WINDS REMAINING
SUSTAINED AROUND 10 MPH OVERNIGHT. SCATTERED TO NUMEROUS MAINLY
AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS ARE THEN FORECAST
ON TUESDAY, WITH BREEZY WESTERLY TRANSPORT WINDS PREVAILING. FAIR
TO GOOD DAYTIME DISPERSION VALUES ARE FORECAST TODAY AND TUESDAY.
TODAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........22 15 19 17 12 19 25 40 63 64 59 55
WEATHER COV..... SCH SCH CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ SCH SCH CHC CHC CHC CHC
CHC OF PCPN (%).0 0 0 10 10 10 20 20 40 50 40 30
CHC OF THDR (%).0 0 0 10 10 10 20 20 40 50 40 30
TEMP............77 76 78 82 88 91 93 94 95 94 94 91
RH..............97 100 97 88 75 65 60 60 55 55 55 60
HEAT INDEX (F)..77 76 78 91 103 108 109 110 110 109 109 105
20 FT WIND DIR..W W W W W W W W W W W SW
20 FT WIND SPD..3 2 3 5 7 8 8 8 9 9 12 12
20 FT WIND GUST.9 9 10 12 14 15 15 15 15 17 18 20
MIX HGT (KFT)...0.5 0.5 0.5 1.4 2.4 3.3 3.8 4.2 4.7 3.9 3.2 2.4
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.7 8 8 9 10 10 10 9 9 10 12 13
DISPERSION IDX..3 4 10 20 30 45 45 45 50 45 40 35
LVORI...........8 9 7 4 3 1 1 1 1 1 1 1
TONIGHT
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........60 66 62 60 58 68 53 47 50 35 18 19
WEATHER COV.....CHC CHC
WEATHER TYPE....RW RW
TSTM COV........CHC CHC
CHC OF PCPN (%).40 30 10 10 10 10 0 0 0 0 0 0
CHC OF THDR (%).40 30 10 10 10 10 0 0 0 0 0 0
TEMP............91 88 85 83 82 81 81 80 79 79 79 79
RH..............60 65 75 82 85 88 88 91 94 91 91 91
HEAT INDEX (F)..105 99 96 92 90 88 88 87 79 79 79 79
20 FT WIND DIR..W SW SW SW W W SW W SW W W W
20 FT WIND SPD..12 10 9 8 6 5 5 5 5 3 3 5
20 FT WIND GUST.20 20 18 16 15 14 13 13 13 13 13 13
MIX HGT (KFT)...1.8 1.2 0.6 0.6 0.5 0.5 0.4 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.13 12 10 10 10 10 9 9 9 9 9 9
DISPERSION IDX..30 30 15 10 7 7 6 6 5 4 4 4
LVORI...........2 3 4 4 4 5 5 6 6 6 6 6
TUESDAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........20 17 30 48 20 35 39 38 82 82 82 82
WEATHER COV..... SCH SCH SCH CHC CHC CHC LKY
WEATHER TYPE.... RW RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH CHC CHC CHC LKY
CHC OF PCPN (%).0 0 20 20 10 10 0 20 50 50 50 60
CHC OF THDR (%).0 0 20 20 10 10 0 20 70 70 70 70
TEMP............78 77 79 83 87 89 90 92 92 92 93 91
RH..............94 97 94 88 80 75 70 65 65 65 60 65
HEAT INDEX (F)..78 77 79 94 103 108 108 111 111 111 110 108
20 FT WIND DIR..W W W W W W W W W W SW SW
20 FT WIND SPD..3 3 5 7 9 10 10 9 8 9 10 12
20 FT WIND GUST.12 12 7 10 14 16 16 14 13 14 16 17
MIX HGT (KFT)...0.6 0.7 0.9 1.5 2.1 2.7 3.0 3.4 3.7 2.9 2.0 1.2
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.9 10 10 12 12 12 12 12 12 12 13 13
DISPERSION IDX..4 5 15 25 30 40 45 50 40 40 30 25
LVORI...........6 8 5 4 3 3 3 1 3 3 2 3
FORECASTER...NELSON
REQUESTED BY...CULLY LORD
TYPE OF REQUEST...PRESCRIBED
.TAG 2619798.0/JAX
.DELDT 08/17/26
.FORMATTERVERSION 2.0.0
.EMAIL CULLY@UFL.EDU
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