419
FNUS72 KMLB 030800
FWSMLB

Spot Forecast for Emeralda Marsh Area 4 Cattail Rx...SJRWMD
National Weather Service Melbourne FL
400 AM EDT Wed Sep 3 2025

Forecast is based on ignition time of 1000 EDT on September 03.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Drier air will filter southward across the burn area
today continuing into late week. This will result in lower rain
chances than recent days. Northeast winds increasing to 6 to 8 mph
with some higher gusts. Smoke dispersion Fair to Generally Good
this afternoon. Similar winds speeds on Thursday, perhaps a bit
more east-northeast or east. No RH concerns. Not anticipating any
visibility concerns, though the potential for any rainfall could
raise the risk late overnight/early morning for some patchy fog.

.REST OF TODAY...

Sky/weather.........Partly cloudy (35-45 percent) then becoming
                    mostly cloudy (70-80 percent). Chance of
                    showers and slight chance of thunderstorms in
                    the afternoon.
Chance of pcpn......30 percent.
Max temperature.....Around 89.
Min humidity........60 percent.
Wind (20 ft)........Northeast winds around 6 mph. Gusty and erratic
                    winds expected near thunderstorms.
Mixing height.......4100 ft AGL increasing to 5200 ft AGL late in
                    the afternoon, then decreasing to 2700 ft AGL
                    late in the afternoon.
Transport winds.....Northeast 7 to 12 mph.
Dispersion index....Increasing to around 44.
LVORI...............3 decreasing to 1.

TIME (EDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........18  36  50  54  65  60  65  75
Weather cov.....                CHC CHC CHC CHC
Weather type....                RW  RW  RW  RW
Tstm cov........                SCH SCH SCH SCH
Chc of pcpn (%).0   10  10  10  30  30  30  30
Temp............81  84  85  87  87  87  88  86
RH..............79  72  67  61  60  62  60  63
20 FT wind dir..NE  NE  NE  NE  NE  NE  E   E
20 FT wind spd..6   6   6   6   6   6   6   6
20 FT wind gust.12  12  13  13  13  14  15  15
Mix hgt (kft)...2.3 3.4 4.1 5.0 5.2 5.0 3.7 2.7
Transp wind dir.N   NE  NE  NE  N   NE  E   E
Transp wind spd.12  8   8   7   7   7   8   10
Dispersion idx..35  35  40  41  44  40  40  40
LVORI...........3   3   2   1   1   1   1   1

.TONIGHT...

Sky/weather.........Considerable cloudiness (60-70 percent) then
                    becoming partly cloudy (35-45 percent). Slight
                    chance of showers and thunderstorms early in
                    the evening.
Chance of pcpn......20 percent.
Min temperature.....Around 74.
Max humidity........99 percent.
Wind (20 ft)........Northeast winds 5 to 7 mph in the evening
                    becoming light. Gusty and erratic winds
                    expected near thunderstorms.
Mixing height.......1100 ft AGL decreasing to 400 ft AGL in the
                    late evening and overnight.
Transport winds.....Northeast 5 to 13 mph.
Dispersion index....43 decreasing to 2 to 4.
LVORI...............1 increasing to 8 late.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........73  60  60  52  46  42  44  34  38  41  29  30
Weather cov.....SCH
Weather type....RW
Tstm cov........SCH
Chc of pcpn (%).20  10  10  10  10  0   0   0   0   0   0   0
Temp............86  85  82  80  79  78  77  77  77  77  76  76
RH..............63  65  72  79  79  85  88  88  88  88  90  92
20 FT wind dir..NE  E   E   NE  NE  NE  NE  NE  NE  NE  NE  N
20 FT wind spd..7   7   6   6   6   5   5   3   2   2   2   2
20 FT wind gust.15  15  14  13  12  9   8   7   6   6   6   6
Mix hgt (kft)...3.0 1.6 1.1 0.8 0.6 0.6 0.5 0.5 0.5 0.5 0.4 0.5
Transp wind dir.NE  E   E   E   E   E   NE  NE  NE  N   N   NE
Transp wind spd.12  12  13  12  10  9   9   6   6   5   6   6
Dispersion idx..43  24  8   8   6   5   4   3   3   2   3   3
LVORI...........1   3   3   4   4   5   6   6   6   7   8   8

.THURSDAY...

Sky/weather.........Partly cloudy (35-45 percent). Slight chance
                    of showers and thunderstorms late in the morning
                    and early in the afternoon, then increasing to a
                    chance mid to late in the afternoon.
Chance of pcpn......40 percent.
Max temperature.....Around 90.
Min humidity........62 percent.
Wind (20 ft)........Light winds becoming east-northeast to east 5 to 7
                    mph in the afternoon. Gusty and erratic winds expected
                    near thunderstorms.
Mixing height.......2300 ft AGL increasing to 5600 ft AGL.
Transport winds.....Northeast 6 to 8 mph shifting to the east 8 to
                    9 mph late in the morning.
Dispersion index....3 increasing to around 54.
LVORI...............8 decreasing to 1.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........24  28  17  37  37  37  46  54  63  61  58  56
Weather cov.....                SCH SCH SCH SCH CHC CHC CHC CHC
Weather type....                RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........                    SCH SCH SCH CHC CHC CHC CHC
Chc of pcpn (%).0   0   10  10  20  20  20  20  30  40  40  40
Temp............75  75  74  78  81  84  85  86  88  87  87  86
RH..............94  94  99  88  82  72  67  64  62  63  64  65
20 FT wind dir..N   N   N   NE  NE  E   E   E   E   E   E   E
20 FT wind spd..2   2   3   3   3   3   3   5   5   5   6   6
20 FT wind gust.6   6   6   6   7   9   10  12  12  13  13  13
Mix hgt (kft)...0.5 0.5 0.5 1.4 2.3 3.2 4.0 4.8 5.6 5.2 4.8 4.4
Transp wind dir.N   NE  N   NE  E   E   E   E   E   E   E   E
Transp wind spd.6   6   7   7   8   8   8   8   8   8   8   9
Dispersion idx..3   3   3   13  26  38  46  48  54  52  52  54
LVORI...........8   8   8   4   3   3   1   1   1   1   1   1

$$
Forecaster...Sedlock
Requested by...Brent Keith
Type of request...PRESCRIBED
.TAG 2521112.0/MLB
.DELDT 09/03/25
.FormatterVersion 2.0.0
.EMAIL bkeith@sjrwmd.com