339
FNUS72 KJAX 291245
FWSJAX
SPOT FORECAST FOR 4TH OF JULY...ST. JOHNS COUNTY SHERIFFS OFFICE
NATIONAL WEATHER SERVICE JACKSONVILLE FL
845 AM EDT MON JUN 29 2026
FORECAST IS BASED ON FORECAST START TIME OF 0000 EDT ON JULY 03.
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 RESIDUAL FRONT HANGING OUT OVER CENTRAL AND
SOUTHERN FL WILL BEGINS MOVE NORTHWARD BY FRIDAY, RESULTING IN
INCREASING CHANCES FOR AFTERNOON THUNDERSTORMS WITH THE SEA
BREEZE DEVELOPMENT. THE STEERING FLOW AND THE ATLANTIC SEA BREEZE
WILL LIKELY KEEP THUNDERSTORM ACTIVITY INITIALLY ALONG THE
BEACHFRONT DURING THE EARLY AFTERNOON AND PROGRESS INLAND DURING
THE MID AND LATE AFTERNOON. BREEZY SOUTHEAST WINDS ARE LIKELY
FRIDAY BUT LOW SEAS ARE EXPECTED.
PREVAILING WINDS FLIP 180 DEGREES BY SATURDAY, WITH OFFSHORE FLOW
ENHANCING THE POTENTIAL FOR THUNDERSTORM ACTIVITY OVER THE NEAR
SHORE COASTAL WATERS DURING THE AFTERNOON HOURS. RIGHT NOW, THE
FORECAST IS AROUND 40-50% BUT IT'S LIKELY TO RISE AS OUR
CONFIDENCE INCREASES OVER THE NEXT FEW DAYS.
FRIDAY
TIME (EDT) MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........35 35 25 25 25 25
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).10 10 10 10 10 10
CHC OF THDR (%).10 10 0 0 0 0
TEMP............79 78 78 78 78 78
RH..............88 91 91 91 91 91
SFC WND DIR.....SE SE S S S S
SFC WND SPD KTS.5 4 4 4 3 3
SFC WND GST.....7 7 6 6 6 6
FRIDAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........25 25 35 35 35 35 35 35 55 55 55 55
WEATHER COV..... SCH SCH SCH SCH SCH SCH CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH SCH SCH SCH CHC CHC CHC CHC
CHC OF PCPN (%).10 10 20 20 20 20 20 20 30 30 30 30
CHC OF THDR (%).0 0 20 20 20 20 20 20 30 30 30 30
TEMP............78 79 80 83 85 88 89 90 90 90 91 90
RH..............91 91 88 80 75 68 66 66 66 66 62 64
SFC WND DIR.....S SW SW S SE E E E E E E SE
SFC WND SPD KTS.2 2 2 3 4 6 8 9 10 10 10 10
SFC WND GST.....6 5 5 5 6 7 10 11 11 11 11
FRIDAY NIGHT
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........55 55 48 48 48 48 48 48 29 29 29 29
WEATHER COV.....CHC CHC SCH SCH SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW RW RW RW
TSTM COV........CHC CHC SCH SCH SCH SCH SCH SCH
CHC OF PCPN (%).30 30 20 20 20 20 20 20 10 10 10 10
CHC OF THDR (%).30 30 20 20 20 20 20 20 10 10 10 10
TEMP............88 86 84 83 82 81 80 80 79 78 78 78
RH..............68 75 80 82 82 85 88 85 88 91 88 88
SFC WND DIR.....SE SE SE SE S S S S S S SW SW
SFC WND SPD KTS.9 9 8 7 7 6 5 5 4 4 4 4
SFC WND GST.....11 10 10 10 10 10 9 8 7 6 6 6
INDEPENDENCE DAY
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........29 29 35 35 35 35 35 35 63 63 63 63
WEATHER COV..... SCH SCH SCH SCH SCH SCH CHC CHC CHC CHC
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW RW
TSTM COV........ SCH SCH SCH SCH SCH SCH CHC CHC CHC CHC
CHC OF PCPN (%).10 10 20 20 20 20 20 20 50 50 50 50
CHC OF THDR (%).10 10 20 20 20 20 20 20 50 50 50 50
TEMP............78 78 79 82 86 89 91 92 92 92 92 91
RH..............91 91 91 82 72 66 62 60 60 60 58 60
SFC WND DIR.....SW SW SW SW SW SW SW SE E E SE SE
SFC WND SPD KTS.4 3 3 4 5 6 7 8 9 9 9 9
SFC WND GST.....6 6 6 6 6 7 8 9 10 10 10 10
FORECASTER...BOOTHE
REQUESTED BY...LT. KEITH OKE
TYPE OF REQUEST...MARINE
.TAG 2615634.0/JAX
.DELDT 06/29/26
.FORMATTERVERSION 2.0.0
.EMAIL KOKE@SJSO.ORG
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