615
FNUS72 KJAX 201146
FWSJAX
SPOT FORECAST FOR RAILROAD COMPLEX...FLORIDA FOREST SERVICE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
746 AM EDT MON APR 20 2026
FORECAST IS BASED ON FORECAST START TIME OF 0800 EDT ON APRIL 20.
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.
..RED FLAG WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING
...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY AFTERNOON...
DISCUSSION
CRITICAL FIRE WEATHER CONDITIONS AND ERRATIC BEHAVIOR, OWING TO
GUSTY NORTHEASTERLY WINDS IN THE WAKE OF A COLD FRONT, ARE
EXPECTED TODAY. QUESTIONABLE HOW LOW HUMIDITY GET, AS HUMIDITY
RECOVERY THIS MORNING IS ONLY AROUND 60%. A VERY DRY AIRMASS WILL
ATTEMPT TO BE BALANCED BY MOISTURE PUSHED IN FROM THE ATLANTIC,
BUT STILL LIKELY TO SEE THE DRY AIR WIN OUT WITH HUMIDITY FALLING
TO SUB 30% BY NOON. GUSTS ARE EXPECTED TO BE FREQUENT AND PEAK
AROUND 25-30 MPH FROM OUT OF THE NORTHEAST, PICKING UP BY AROUND
0800-0900 WITH CANOPY WINDS BEING ALMOST TWICE AS STRONG AS
SURFACE LEVEL WINDS. WINDS AND GUSTS WILL BEGIN TO EASE UP SOME
AROUND 1900-2000, REMAINING PRIMARILY NORTHERLY WITH WINDS
BECOMING MORE MILD AND NORTHERLY OVERNIGHT AND THEN REBUILD FROM
OUT OF THE NORTHEAST ON TUESDAY. THE BIGGEST "WATCH OUT", ASIDE
FROM THE STRONG WINDS, WILL BE THE NOT- SO- GREAT RECOVERY THIS
MORNING LEADING TO AN EARLIER BURN WINDOW.
STAY SAFE OUT THERE. AS ALWAYS, CALL OUR OFFICE IF IMMEDIATE
SUPPORT OR WEATHER UPDATES ARE NEEDED.
REST OF TODAY
TIME (EDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........42 17 15 22 36 33 34 32 36 27
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0
TEMP............63 66 70 73 74 76 76 76 76 74
RH..............58 56 47 40 37 33 32 32 32 33
HEAT INDEX (F)..63 66 70 73 74 76 76 76 76 74
WIND CHILL (F)..63 66 70 73 74 76 76 76 76 74
20 FT WIND DIR..NE NE NE NE NE NE NE NE NE NE
20 FT WIND SPD..13 16 17 16 16 16 15 14 14 13
20 FT WIND GUST.21 25 26 25 25 25 24 24 23 22
MIX HGT (KFT)...0.7 1.9 3.3 4.5 5.0 5.1 5.0 5.1 4.9 4.5
TRANSP WIND DIR.NE NE NE NE NE NE NE NE NE NE
TRANSP WIND SPD.20 20 21 21 21 21 20 20 18 17
DISPERSION IDX..17 46 69 82 86 85 82 81 78 70
LVORI...........2 1 1 1 1 1 1 1 1 1
TONIGHT
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........28 16 25 19 17 20 16 14 9 10 8 6
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............73 70 66 64 62 60 59 57 56 55 54 53
RH..............35 39 50 54 58 64 67 72 74 77 77 80
HEAT INDEX (F)..73 70 66 64 62 60 59 57 56 55 54 53
WIND CHILL (F)..73 70 66 64 62 60 59 57 56 55 54 53
20 FT WIND DIR..NE NE NE NE NE NE NE NE NE N N N
20 FT WIND SPD..12 10 7 7 5 5 5 3 3 2 2 2
20 FT WIND GUST.21 17 10 10 7 7 7 6 6 3 3 3
MIX HGT (KFT)...3.4 2.1 1.0 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
TRANSP WIND DIR.NE NE NE NE NE NE NE NE NE NE NE NE
TRANSP WIND SPD.16 14 12 10 9 8 8 7 7 7 6 6
DISPERSION IDX..55 36 7 5 4 4 3 3 3 3 3 2
LVORI...........1 1 2 3 3 3 3 3 3 4 4 5
TUESDAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........7 8 6 2 3 4 5 5 6 9 12 15
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............53 53 55 63 69 76 77 79 80 80 80 79
RH..............80 80 80 60 49 34 32 29 28 28 28 30
HEAT INDEX (F)..53 53 55 63 69 76 77 79 79 79 79 79
WIND CHILL (F)..53 53 55 63 69 76 77 79 79 79 79 79
20 FT WIND DIR..NW NW N N N NE NE NE NE NE NE E
20 FT WIND SPD..3 3 3 5 6 7 8 9 10 12 12 12
20 FT WIND GUST.6 6 7 8 10 12 14 15 17 17 16 16
MIX HGT (KFT)...0.1 0.1 0.4 1.9 3.8 5.6 6.8 7.5 7.8 7.7 7.1 6.0
TRANSP WIND DIR.NE N N N N N NE NE NE NE NE NE
TRANSP WIND SPD.5 3 5 7 12 14 15 14 13 13 13 13
DISPERSION IDX..2 2 4 17 54 92 105 103 94 79 63 59
LVORI...........5 5 4 2 1 1 1 1 1 1 1 1
FORECASTER...CORLESS
REQUESTED BY...ALLEN LOADHOLTZ
TYPE OF REQUEST...WILDFIRE
.TAG 2610822.0/JAX
.DELDT 04/20/26
.FORMATTERVERSION 2.0.0
.EMAIL ROGER.LOADHOLTZ@FDACS.GOV
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