359
FNUS72 KJAX 110444
FWSJAX
SPOT FORECAST FOR MAILBOX...USFS
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1244 AM EDT SAT JUL 11 2026
FORECAST IS BASED ON FORECAST START TIME OF 0700 EDT ON JULY 11.
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 NOON TODAY TO 7 PM EDT THIS
EVENING...
DISCUSSION
GOOD DISPERSION IS EXPECTED TODAY AS WEST/SOUTHWESTERLY WINDS
CONTINUE, WITH SLIGHTLY DRIER AIR STILL IN PLACE BRINGING
MINRH NEAR 40% THIS AFTERNOON. STORM CHANCES BEGIN AROUND
4PM, LASTING THROUGH AROUND SUNSET, WITH HIGHER RAIN AND
STORM CHANCES ON SUNDAY THROUGH TUESDAY. DISPERSION WILL
BE GOOD TO HIGH ON SUNDAY, WITH INCREASED MOISTURE. TODAY
WILL BE HOT, WITH A HEAT ADVISORY IN EFFECT AS HIGH
TEMPERATURES REACH THE MID 90S WITH DANGEROUS HEAT INDICES.
REST OF TODAY
TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........25 26 31 37 42 35 27 20 31 42 52
WEATHER COV..... SCH CHC
WEATHER TYPE.... RW RW
TSTM COV........ SCH CHC
CHC OF PCPN (%).0 0 0 0 0 0 10 10 10 20 30
CHC OF THDR (%).0 0 0 0 0 0 0 10 10 20 20
TEMP............72 77 81 87 90 93 96 98 98 98 95
RH..............97 85 77 63 60 52 46 42 42 42 46
HEAT INDEX (F)..72 77 86 94 99 102 105 106 106 106 103
WIND CHILL (F)..72 77 86 94 99 102 105 106 106 106 103
20 FT WIND DIR..N SW W W W W W SW SW SW SW
20 FT WIND SPD..0 1 2 5 6 6 6 7 7 8 8
20 FT WIND GUST. 2 3 7 9 9 9 10 10 13 13
MIX HGT (KFT)...0.4 0.6 1.6 2.6 3.5 4.7 5.7 6.8 6.4 6.5 5.6
TRANSP WIND DIR.W W W W W W W W W W W
TRANSP WIND SPD.6 8 9 8 7 8 8 8 9 10 10
DISPERSION IDX..2 4 13 18 21 33 40 47 51 59 66
LVORI...........6 6 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 (%).........53 55 56 56 57 57 49 41 33 33 33 33
WEATHER COV.....CHC CHC CHC SCH
WEATHER TYPE....RW RW RW RW
TSTM COV........CHC CHC CHC SCH
CHC OF PCPN (%).30 30 30 20 10 10 0 0 0 0 0 0
CHC OF THDR (%).20 20 20 10 10 10 0 0 0 0 0 0
TEMP............90 89 84 81 79 78 78 77 76 75 75 74
RH..............56 57 67 74 79 82 85 87 90 94 94 97
HEAT INDEX (F)..97 96 90 85 79 78 78 77 76 75 75 74
WIND CHILL (F)..97 96 90 85 79 78 78 77 76 75 75 74
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW SW W W
20 FT WIND SPD..8 7 6 6 5 3 3 2 1 1 1 1
20 FT WIND GUST.13 10 9 9 7 6 6 3 2 2 2 2
MIX HGT (KFT)...4.1 2.5 1.0 0.8 0.6 0.5 0.5 0.5 0.4 0.4 0.4 0.4
TRANSP WIND DIR.W W W W SW SW SW W W W W W
TRANSP WIND SPD.12 12 12 12 10 9 9 9 8 8 8 8
DISPERSION IDX..55 37 8 8 7 5 4 4 4 4 4 3
LVORI...........1 1 3 3 4 4 5 6 6 6 6 7
SUNDAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........34 35 36 26 24 25 29 30 31 31 35 34
WEATHER COV..... SCH CHC CHC
WEATHER TYPE.... RW RW RW
TSTM COV........ SCH CHC CHC
CHC OF PCPN (%).0 0 0 0 0 0 0 0 10 20 30 40
CHC OF THDR (%).0 0 0 0 0 0 0 0 10 20 30 40
TEMP............74 75 77 83 87 90 93 94 95 96 96 94
RH..............100 100 97 80 70 62 54 51 48 46 46 49
HEAT INDEX (F)..74 75 77 91 98 101 103 103 104 105 105 102
WIND CHILL (F)..74 75 77 91 98 101 103 103 104 105 105 102
20 FT WIND DIR..W W W W W W W W W W W SW
20 FT WIND SPD..2 2 2 3 3 5 5 6 6 6 7 7
20 FT WIND GUST.3 3 7 8 9 10 12 13 14 15 15 15
MIX HGT (KFT)...0.5 0.6 0.6 1.5 2.4 3.4 4.2 5.1 6.0 5.7 5.4 5.0
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.8 8 8 9 9 9 9 9 9 10 12 13
DISPERSION IDX..3 4 8 17 29 40 49 57 65 69 72 72
LVORI...........8 9 6 3 3 1 1 1 1 1 1 1
FORECASTER...KLINGLER
REQUESTED BY...MICHELS
TYPE OF REQUEST...WILDFIRE
.TAG 2616912.3/JAX
.DELDT 07/11/26
.FORMATTERVERSION 2.0.0
.EMAIL NICK.MICHELS@USDA.GOV
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