513
FNUS72 KJAX 211554
FWSJAX
SPOT FORECAST FOR BLOCK 110...FLORIDA FOREST SERVICE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1054 AM EST WED JAN 21 2026
FORECAST IS BASED ON IGNITION TIME OF 1100 EST ON JANUARY 21.
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
A MIX OF SUN AND CLOUDS EXPECTED TODAY WITH WINDS GENERALLY OUT
OF THE EAST TO NORTHEAST THROUGH THE EVENING. FLOW AND DAYTIME
MIXING WILL BE JUST STRONG ENOUGH TO YIELD FAIR DISPERSIONS
AROUND THE 40 TO 45 UNIT RANGE DURING PEAK MIXING, WITH RH VALUES
WELL ABOVE ANY CRITICAL LEVELS. THURSDAY WILL BE A SIMILAR DAY
WITH A SIMILAR NORTHEASTERLY FLOW, THOUGH TRANSPORT WINDS WILL BE
WEAKER RESULTING IN SLIGHTLY LOWER DISPERSIONS WHICH MAY BE LOW AT
TIMES.
REST OF TODAY
TIME (EST) 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........49 53 53 66 65 67 71
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0
TEMP............60 64 67 69 68 68 65
RH..............62 56 54 53 59 61 65
HEAT INDEX (F)..60 64 67 69 68 68 65
WIND CHILL (F)..60 64 67 69 68 68 65
20 FT WIND DIR..NE NE E E E E E
20 FT WIND SPD..6 7 7 7 7 7 7
20 FT WIND GUST.9 10 10 10 10 10 10
MIX HGT (KFT)...1.8 2.7 3.6 3.7 3.8 4.0 2.8
TRANSP WIND DIR.E E E E E E E
TRANSP WIND SPD.10 10 10 10 9 9 9
DISPERSION IDX..26 36 44 44 43 43 32
LVORI...........2 1 1 1 1 1 2
TONIGHT
TIME (EST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........75 84 92 94 94 94 94 94 94 94 93 92
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............61 58 55 54 53 52 51 51 51 50 50 50
RH..............78 83 90 93 93 96 100 96 96 100 100 100
HEAT INDEX (F)..61 58 55 54 53 52 51 51 51 50 50 50
WIND CHILL (F)..61 58 55 54 53 52 51 51 51 50 50 50
20 FT WIND DIR..E E NE N N N N N N N N N
20 FT WIND SPD..6 5 2 0 0 0 0 0 0 0 0 0
20 FT WIND GUST.9 7 3
MIX HGT (KFT)...1.6 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.E E E NE NE NE NE NE NE NE NE NE
TRANSP WIND SPD.8 8 8 7 7 6 6 5 5 6 6 6
DISPERSION IDX..17 5 3 3 3 3 3 2 2 2 3 3
LVORI...........3 4 6 7 7 8 9 8 9 9 9 9
THURSDAY
TIME (EST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........92 86 84 78 72 68 63 59 53 47 41 34
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............51 51 53 57 63 67 70 73 74 75 73 70
RH..............96 100 96 93 84 75 68 62 59 58 62 68
HEAT INDEX (F)..51 51 53 57 63 67 70 73 74 75 73 70
WIND CHILL (F)..51 51 53 57 63 67 70 73 74 75 73 70
20 FT WIND DIR..N N NE NE NE NE NE NE NE NE NE E
20 FT WIND SPD..0 3 3 5 5 5 5 5 5 5 5 5
20 FT WIND GUST. 6 8 8 9 9 10 10 10 12 12 12
MIX HGT (KFT)...0.4 0.4 0.5 0.6 0.7 1.7 2.7 3.6 3.7 3.8 3.9 2.7
TRANSP WIND DIR.NE N NE NE NE E E E E E E E
TRANSP WIND SPD.7 7 7 7 7 7 7 7 6 6 6 7
DISPERSION IDX..3 7 7 7 7 15 22 29 27 27 28 23
LVORI...........9 8 6 6 4 3 3 2 2 2 2 3
FORECASTER...DUBOIS
REQUESTED BY...SR RANGER FOLSOM
TYPE OF REQUEST...PRESCRIBED
.TAG 2600780.0/JAX
.DELDT 01/21/26
.FORMATTERVERSION 2.0.0
.EMAIL BRIAN.FOLSOM@FDACS.GOV
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