327
FNUS72 KMLB 200651
FWSMLB

Spot Forecast for CCSFS Area 3 RX...US Fish and Wildlife
National Weather Service Melbourne FL
251 AM EDT Thu Aug 20 2026

Forecast is based on ignition time of 0800 EDT on August 20.
If conditions become unrepresentative, contact the National Weather
Service.

...HEAT ADVISORY IN EFFECT FROM 10 AM THIS MORNING TO 7 PM EDT
THIS EVENING...

.DISCUSSION...

Hot and humid through the end of the work week, with another Heat
Advisory in effect today due to heat indices 108 to 112 degrees.
Additional Heat Advisories may be needed tomorrow. Scattered to
numerous shower and storms are forecast. Convection is initially
forecast to develop along the sea breeze in the early afternoons,
then drift inland for the evening. However, storms may drift back
towards the coast Friday evening. Storm motions will become
increasingly erratic through the afternoons, propagating along
outflow boundaries due to weak flow. Storms could be strong, with
wind gusts near 50-55 mph, lightning strikes, and small hail. A few
locally higher wind gusts cannot be ruled out. Light southwesterly
winds prevail, backing south to southeast behind the sea breeze.
Light flow will lead to poor to fair dispersion today and Friday.
Improvement is forecast for the weekend. No min RH concerns.

.TODAY...

Sky/weather.........Sunny (15-25 percent). Slight chance of showers
                    and thunderstorms early in the afternoon.
                    Chance of showers and thunderstorms late in the
                    afternoon.
Chance of pcpn......30 percent.
Max temperature.....Around 94.
Min humidity........60 percent.
Wind (20 ft)........Light winds becoming southeast 5 to 8 mph in
                    the afternoon. Gusty and erratic winds expected
                    near thunderstorms.
Mixing height.......1400 ft AGL.
Transport winds.....Southwest 3 to 6 mph shifting to the southeast
                    7 to 9 mph late in the afternoon.
Dispersion index....7 increasing to 15 late in the afternoon.
LVORI...............6 decreasing to 3.

TIME (EDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........3   11  14  17  21  28  30  32  33  35
Weather cov.....                    SCH CHC CHC CHC CHC
Weather type....                    RW  RW  RW  RW  RW
Tstm cov........                    SCH CHC CHC CHC CHC
Chc of pcpn (%).0   10  10  10  10  20  30  30  30  30
Temp............80  84  88  90  92  93  93  93  92  90
RH..............91  80  70  66  62  60  60  60  62  66
20 FT wind dir..SW  SW  SW  SW  S   SE  E   E   SE  SE
20 FT wind spd..2   2   2   3   5   6   7   7   7   8
20 FT wind gust.6   5   5   5   6   8   9   9   10  10
Mix hgt (kft)...0.6 1.1 1.3 1.4 1.4 1.3 1.0 1.0 1.3 1.3
Transp wind dir.W   W   W   SW  SW  S   SE  E   SE  S
Transp wind spd.6   5   5   3   5   6   7   7   7   9
Dispersion idx..5   6   7   8   8   10  9   10  13  15
LVORI...........6   4   3   3   3   3   3   3   3   3

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent). Chance of
                    showers and thunderstorms in the evening.
Chance of pcpn......30 percent.
Min temperature.....Around 77.
Max humidity........100 percent.
Wind (20 ft)........South winds 5 to 8 mph in the evening becoming
                    light. Gusty and erratic winds expected near
                    thunderstorms.
Mixing height.......400 ft AGL.
Transport winds.....South 8 to 10 mph shifting to the southwest 7
                    to 8 mph after 3 am.
Dispersion index....10 decreasing to 4 overnight.
LVORI...............4 increasing to 6 in the late evening and
                    overnight.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........38     44     44     35     35     26
Weather cov.....CHANCE S CHC
Weather type....RNSHWR RNSHWR NONE   NONE   NONE   NONE
Tstm cov........CHANCE S CHC
Chc of pcpn (%).30     20     10     10     0      10
Temp............88     83     81     80     80     79
RH..............70     82     88     91     91     91
20 ft wind......SE 8   S 5    S 5    S 3    SW 3   SW 2
20 ft wind gust.10     9      9      8      7      6
Mix hgt (ft)....1200   600    600    500    500    500
Transport wind..SE 9   S 9    S 9    S 9    S 8    SW 8
Dispersion idx..14     6      6      4      4      3
LVORI...........3      4      5      6      6      6

.FRIDAY...

Sky/weather.........Mostly sunny (20-30 percent). Chance of showers
                    and thunderstorms in the afternoon.
Chance of pcpn......30 percent.
Max temperature.....Around 94.
Min humidity........60 percent.
Wind (20 ft)........Light winds becoming southeast 5 to 9 mph late
                    in the morning. Gusty and erratic winds
                    expected near thunderstorms.
Mixing height.......1800 ft AGL.
Transport winds.....Southwest 6 to 12 mph.
Dispersion index....7 increasing to 18 in the early afternoon.
LVORI...............7 decreasing to 4.

TIME (EDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........32        23        23        32
Weather cov.....                              CHANCE
Weather type....NONE      NONE      NONE      RNSHWR
Tstm cov........                              CHANCE
Chc of pcpn (%).10        0         0         30
Temp............78        83        91        92
RH..............94        82        64        62
20 FT wind......SW 2G6    SW 3G6    S 5G7     SE 8G12
Mix hgt (ft)....400       1000      1800      1200
Transport wind..SW 7      SW 6      SW 6      S 8
Dispersion idx..3         8         13        18
LVORI...........7         4         3         3

$$
Forecaster...Wishard
Requested by...Alan taylor
Type of request...PRESCRIBED
.TAG 2620041.0/MLB
.DELDT 08/20/26
.FormatterVersion 2.0.0
.EMAIL alan_taylor@fws.gov