818
FNUS72 KJAX 250735
FWSJAX
SPOT FORECAST FOR BILLYS ISLAND FIRE...USFWS
NATIONAL WEATHER SERVICE JACKSONVILLE FL
335 AM EDT MON MAY 25 2026
FORECAST IS BASED ON FORECAST START TIME OF 0700 EDT ON MAY 25.
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
SUMMER-LIKE PATTERN AND UNSTABLE AIRMASS CONTINUE THROUGH
TUESDAY, SUPPORTING ANOTHER ROUND OF LATE AFTERNOON AND EARLY
EVENING THUNDERSTORMS ALONG THE ATLANTIC SEA BREEZE. BEFORE THE
SEA BREEZE ARRIVES, HOT AND HUMID CONDITIONS WILL PREVAIL THOUGH
ENOUGH MIXING SHOULD ALLOW HUMIDITY TO REACH AROUND 50% AROUND
1600. EXPECT THE SEA BREEZE AND BEST WINDOW OF THUNDERSTORMS TO
OCCUR BETWEEN 1700-1900 THIS EVENING. WITH THE SEA BREEZE WINDS
WILL SHIFT FROM A STEADY SOUTH-SOUTHEASTERLY TO AN EASTERLY WIND
THAT'LL BE STRONGER, AROUND 8-12 MPH WITH GUSTS TO 16 MPH.
A SIMILAR HOT, HUMID, EARLY-SUMMER PATTERN PREVAILS THROUGH
TUESDAY, THOUGH THUNDERSTORM CHANCES WILL BE LESSENED DUE TO DRIER
ALOFT MOVING BRIEFLY INTO SOUTHERN GA.
FOG POTENTIAL WILL BE LIMITED BUT IF A HEAVY RAIN OCCURS (AN INCH
OR MORE) IN THE FIRE AREA, PATCHY FOG COULD OCCUR DURING THE
FOLLOWING DAY AROUND SUNRISE.
REST OF TODAY
TIME (EDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........60 45 43 41 50 59 68 63 63 71 78
WEATHER COV..... SCH CHC CHC CHC CHC LKY
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ SCH CHC CHC CHC CHC LKY
CHC OF PCPN (%).10 10 10 10 10 20 30 30 40 50 60
CHC OF THDR (%).0 10 10 10 10 20 30 30 40 50 60
TEMP............72 73 77 81 83 85 86 87 87 86 85
RH..............97 93 85 77 72 67 65 61 61 61 63
HEAT INDEX (F)..72 73 77 86 89 92 93 94 94 91 90
20 FT WIND DIR..SE SE S S S S S S S S S
20 FT WIND SPD..3 3 5 5 6 7 7 7 7 6 5
20 FT WIND GUST.8 12 13 12 13 13 14 14 14 13 12
MIX HGT (KFT)...0.8 1.2 1.8 2.6 3.3 3.9 4.3 4.4 4.2 3.8 3.2
TRANSP WIND DIR.S S S S S S S S S S S
TRANSP WIND SPD.8 9 10 12 12 12 12 10 10 9 8
DISPERSION IDX..4 14 24 38 49 57 62 54 52 42 31
LVORI...........8 5 4 3 3 1 1 1 1 1 2
TONIGHT
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........81 83 79 81 74 80 61 53 55 35 51 47
WEATHER COV.....LKY LKY LKY CHC CHC CHC CHC SCH
WEATHER TYPE....RW RW RW RW RW RW RW RW
TSTM COV........LKY LKY CHC CHC CHC CHC CHC SCH
CHC OF PCPN (%).60 60 60 50 50 40 30 20 10 10 10 10
CHC OF THDR (%).60 60 50 50 50 30 30 20 10 10 10 0
TEMP............83 81 77 74 73 73 72 72 72 71 71 71
RH..............70 74 88 97 97 97 100 97 97 100 97 97
HEAT INDEX (F)..88 85 77 74 73 73 72 72 72 71 71 71
20 FT WIND DIR..S S S S SE SE SE N N N SE SE
20 FT WIND SPD..3 3 2 2 2 2 1 0 0 0 1 2
20 FT WIND GUST.12 12 9 6 8 6 5 6 7 8 9 10
MIX HGT (KFT)...2.3 1.5 0.8 0.6 0.7 0.8 0.7 0.7 0.6 0.6 0.5 0.5
TRANSP WIND DIR.S SW SW S SE SE SE SE SE SE S S
TRANSP WIND SPD.7 6 6 6 6 7 7 7 7 8 8 8
DISPERSION IDX..20 10 2 2 3 3 3 3 3 3 4 4
LVORI...........3 4 6 7 8 8 9 9 8 9 9 9
TUESDAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........43 43 41 46 44 33 46 49 53 49 53 58
WEATHER COV..... SCH SCH CHC
WEATHER TYPE.... RW RW RW
TSTM COV........ SCH SCH CHC
CHC OF PCPN (%).10 0 0 0 0 0 0 0 10 20 20 30
CHC OF THDR (%).0 0 0 0 0 0 0 0 10 20 20 30
TEMP............70 71 72 76 82 84 88 89 90 91 90 89
RH..............100 100 93 90 74 70 59 57 54 50 54 56
HEAT INDEX (F)..70 71 72 76 87 90 95 96 96 97 96 95
20 FT WIND DIR..SE SE S S S S S S S S S S
20 FT WIND SPD..3 3 2 3 3 5 5 5 5 5 3 3
20 FT WIND GUST.9 9 10 12 12 13 13 14 14 14 14 12
MIX HGT (KFT)...0.5 0.6 1.0 1.8 2.8 3.8 5.0 6.0 6.4 5.7 4.5 3.1
TRANSP WIND DIR.S S S S S S S S S S S S
TRANSP WIND SPD.9 10 10 12 12 12 12 10 10 9 9 8
DISPERSION IDX..4 4 14 27 41 56 72 76 79 66 54 37
LVORI...........9 8 5 4 3 1 1 1 1 1 1 1
FORECASTER...BOOTHE
REQUESTED BY...ALAN TAYLOR
TYPE OF REQUEST...WILDFIRE
.TAG 2614398.0/JAX
.DELDT 05/25/26
.FORMATTERVERSION 2.0.0
.EMAIL ALAN_TAYLOR@FWS.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page