Spot Forecast
Issued by NWS Melbourne, FL
Issued by NWS Melbourne, FL
990
FNUS72 KMLB 110929
FWSMLB
Spot Forecast for Cypress Creek Rx...St. Lucie County
National Weather Service Melbourne FL
529 AM EDT Tue Aug 11 2026
Forecast is based on ignition time of 0600 EDT on August 11.
If conditions become unrepresentative, contact the National Weather
Service.
...HEAT ADVISORY IN EFFECT FROM 11 AM THIS MORNING TO 8 PM EDT
THIS EVENING...
.DISCUSSION...
Good morning. Light and variable winds this morning will become
east to southeast and increase to around 5 mph this afternoon with
the formation of the east coast sea breeze. Below normal rain
chances continue today, with a 20 percent chance of rain forecast
at the burn site as showers form along the sea breeze this
afternoon. A lightning storm or two can not be ruled out. Hot and
humid conditions continue today, with afternoon highs in the mid
90s and peak heat indices ranging from 107 to 109 degrees. A Heat
Advisory has been issued for today starting at 11AM until 8PM. No
Min RH concerns. Smoke dispersion values will be poor to fair
today due to the light winds.
Below normal rain chances will continue through mid week, with
rain chances around 30-40 percent at the burn site Wednesday and
Thursday. Conditions will remain hot, with afternoon highs in the
mid 90s and peak heat indices ranging from 105-109F through that
time period. Light west to southwest winds will prevail mid week,
backing onshore (east to southeast) each afternoon with the
formation of the sea breeze. No Min RH concerns through the week.
Smoke dispersion values will be fair to generally good Wednesday
and Thursday.
.TODAY...
Sky/weather.........Mostly sunny (25-35 percent). Slight chance of
showers and thunderstorms late in the
afternoon.
Chance of pcpn......20 percent.
Max temperature.....Around 95.
Min humidity........55 percent.
Wind (20 ft)........Light winds becoming northwest around 5 mph
late in the afternoon, then shifting to the
east late in the afternoon. Gusty and erratic
winds expected near thunderstorms late in the
afternoon.
Mixing height.......1500 ft AGL increasing to 4900 ft AGL.
Transport winds.....South 3 to 6 mph shifting to the northwest 3 to
5 mph late in the afternoon, then shifting to
the northeast around 5 mph late in the
afternoon.
Dispersion index....7 increasing to 21 in the late morning and
afternoon.
LVORI...............10 decreasing to 3.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........27 27 22 17 24 18 16 17 31 35 36 40
Weather cov..... SCH SCH SCH
Weather type.... RW RW RW
Tstm cov........ SCH SCH SCH
Chc of pcpn (%).0 0 0 0 0 0 0 0 10 20 20 20
Temp............76 74 77 82 87 89 91 93 95 94 94 93
RH..............97 100 100 91 77 70 64 60 55 56 56 56
20 FT wind dir..N N N N S S SW SW SW W NW E
20 FT wind spd..0 0 0 0 1 1 2 2 2 3 5 5
20 FT wind gust.3 3 3 2 3 3 3 5 6 7 9 10
Mix hgt (kft)...0.4 0.4 0.5 1.5 2.5 3.1 3.9 4.3 4.7 4.9 4.4 3.9
Transp wind dir.S S S S S S S SW NW NW N NE
Transp wind spd.5 5 5 6 6 5 3 3 3 3 5 5
Dispersion idx..2 2 2 11 19 17 19 19 20 21 25 24
LVORI...........10 10 10 5 3 3 3 2 2 2 2 2
.TONIGHT...
Sky/weather.........Partly cloudy (25-35 percent). Slight chance of
showers and thunderstorms early in the evening.
Chance of pcpn......20 percent.
Min temperature.....Around 74.
Max humidity........100 percent.
Wind (20 ft)........East winds 5 to 6 mph early in the evening
becoming light. Gusty and erratic winds
expected near thunderstorms early in the
evening.
Mixing height.......1400 ft AGL decreasing to 400 ft AGL early in
the evening.
Transport winds.....Southeast 6 to 7 mph shifting to the south 5 to
6 mph overnight.
Dispersion index....16 decreasing to 3 early in the evening.
LVORI...............3 increasing to 10.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........40 34 33 33 36 32 23 20 24 26 19 19
Weather cov.....SCH SCH SCH
Weather type....RW RW RW
Tstm cov........SCH SCH SCH
Chc of pcpn (%).20 20 20 10 10 10 0 10 0 0 0 0
Temp............90 89 84 83 81 80 80 79 79 78 77 76
RH..............62 64 77 80 85 88 88 88 88 91 94 97
20 FT wind dir..E E E N SE SE S S S S S S
20 FT wind spd..6 6 5 3 3 3 2 2 2 2 2 2
20 FT wind gust.9 12 12 10 9 9 8 8 8 7 6 6
Mix hgt (kft)...2.6 1.4 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.SE SE E SE SE SE S S S S S SW
Transp wind spd.6 7 7 7 7 6 5 5 6 6 5 5
Dispersion idx..20 12 3 3 3 3 2 2 3 3 2 2
LVORI...........2 3 4 5 5 6 6 7 6 6 8 10
$$
Forecaster...Watson
Requested by...Gino Garlaschi Preserve Ranger
Type of request...PRESCRIBED
.TAG 2619420.0/MLB
.DELDT 08/11/26
.FormatterVersion 2.0.0
.EMAIL gino.garlaschi@stlucieco.gov