177
FNUS72 KMLB 260734
FWSMLB

Spot Forecast for SJRWMD FMU 3911...St. Johns River Water Managment District
National Weather Service Melbourne FL
334 AM EDT Sat Sep 26 2026

Forecast is based on ignition time of 0900 EDT on September 26.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...

Good morning. North to northwest winds this morning will
generally be below 10 mph before veering north to northeast and
increasing to 10-15 mph with gusts to around 20 mph in the
afternoon with the formation of the east coast sea breeze. Drier
air will continue to filter down across the burn site, resulting
in no rain and storm chances today. No Min RH concerns today, with
RH values forecast to be 55 to 60%. Smoke dispersion values will be
generally good today.

Sunday, light north to northwest winds in the morning will become
northeast to east in the afternoon with the formation of the east
coast sea breeze, speeds generally below 10 mph. No mentionable
rain chances once again as drier air remains in place. Min RH
values drop to 45 to 50% in the afternoon. Smoke dispersion values
will be fair to poor.

.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent).
Chance of pcpn......0 percent.
Max temperature.....Around 84.
Min humidity........56 percent.
Wind (20 ft)........North winds 7 to 13 mph.
Mixing height.......1700 ft AGL increasing to 4500 ft AGL late in
                    the morning.
Transport winds.....North 8 to 13 mph.
Dispersion index....16 increasing to 48.
LVORI...............4 decreasing to 1 in the afternoon.

TIME (EDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5   5   10  11  13  15  18  17  17
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0
Temp............71  76  79  81  80  81  83  81  80
RH..............83  71  67  60  62  59  56  58  58
20 FT wind dir..NW  N   N   N   N   N   N   N   N
20 FT wind spd..7   8   8   9   9   10  12  12  13
20 FT wind gust.10  12  12  12  13  14  15  16  16
Mix hgt (kft)...0.8 1.7 2.8 3.6 4.2 4.4 4.5 4.1 3.6
Transp wind dir.N   N   N   N   N   N   N   N   N
Transp wind spd.9   9   8   9   9   10  12  12  13
Dispersion idx..11  20  30  40  47  51  51  46  45
LVORI...........4   3   3   1   1   1   1   1   1

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
Chance of pcpn......0 percent.
Min temperature.....Around 64.
Max humidity........89 percent.
Wind (20 ft)........North winds 5 to 12 mph early in the evening
                    becoming light.
Mixing height.......1100 ft AGL decreasing to 300 ft AGL early in
                    the evening.
Transport winds.....North 6 to 12 mph.
Dispersion index....36 decreasing to 3.
LVORI...............1 increasing to 6.

TIME (EDT)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........14        2         1         16
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
Chc of pcpn (%).0         0         0         0
Temp............79        72        68        66
RH..............59        72        81        84
20 FT wind......N 12G16   N 5G8     N 2G5     NW 2G5
Mix hgt (ft)....2700      400       400       300
Transport wind..N 12      N 8       N 6       N 6
Dispersion idx..36        4         3         3
LVORI...........1         3         5         6

.SUNDAY...

Sky/weather.........Mostly sunny (25-35 percent).
Chance of pcpn......0 percent.
Max temperature.....Around 84.
Min humidity........47 percent.
Wind (20 ft)........Light winds becoming northwest around 5 mph
                    early in the morning, then becoming light in
                    the late morning and afternoon.
Mixing height.......2000 ft AGL increasing to 4800 ft AGL late in
                    the morning.
Transport winds.....Northwest 5 to 6 mph shifting to the east
                    around 8 mph late in the afternoon.
Dispersion index....4 increasing to 33.
LVORI...............6 decreasing to 2.

TIME (EDT)      6 AM         10 AM        2 PM
Sky (%).........8            22           47
Weather cov.....
Weather type....NONE         NONE         NONE
Tstm cov........
Chc of pcpn (%).0            0            0
Temp............64           75           81
RH..............89           66           50
20 FT wind......NW 3G6       NW 3G6       N 2G6
Mix hgt (ft)....400          2000         4800
Transport wind..NW 6         NW 5         NW 5
Dispersion idx..2            13           28
LVORI...........6            3            2

$$
Forecaster...Watson
Requested by...Jonathan Baker
Type of request...PRESCRIBED
.TAG 2622480.0/MLB
.DELDT 09/26/26
.FormatterVersion 2.0.0
.EMAIL jabaker@sjrwmd.com