801
FNUS72 KMFL 201538
FWSMFL

Spot Forecast for Sic Island RX...Florida Forest Service
National Weather Service Miami FL
Issued by National Weather Service Key West FL
1038 AM EST Thu Nov 20 2025

Forecast is based on ignition time of 0700 EST on November 21.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office at (305) 229-4522, if you have questions
or concerns with this forecast.

.DISCUSSION...
Surface high pressure to our north will continue to maintain light
easterly winds during the daytime and becoming light and variable
overnight. This may allow for patchy fog to develop overnight
tonight and again Friday night into Saturday. Light winds will
promote poor to fair dispersion indices through the period.
Relatively drier air will continue to filter in across the
Peninsula, which will bring min RH values to near or just below 50
percent Friday afternoon. An increase in moisture on Saturday will
make for better RH recoveries.

.FRIDAY...

Sky/weather.........Patchy morning fog, then mostly sunny (20-30 percent).
Chance of pcpn......0 percent.
Max temperature.....Around 84.
Min humidity........49 percent.
Wind (20 ft)........Light and variable winds becoming east around 5 mph in
the afternoon.
Mixing height.......4900 ft AGL.
Transport winds.....East 5 to 9 mph.
Dispersion index....6 increasing to 17 late in the morning, then
                    increasing 44 in the afternoon.
LVORI...............5.

TIME (EST)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........43  13  8   3   6   8   11  11  10  10  14
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0
Temp............60  64  70  77  81  82  83  84  84  83  80
RH..............100 100 87  71  63  56  53  49  49  51  56
20 FT wind dir..NE  NE  E   E   E   E   E   E   E   E   E
20 FT wind spd..2   2   2   3   3   3   5   5   5   5   5
20 FT wind gust.5   5   6   7   8   9   9   10  10  10  10
Mix hgt (kft)...0.4 1.0 1.8 2.6 3.2 3.8 4.2 4.7 4.9 4.5 3.3
Transp wind dir.E   E   E   E   E   E   E   E   E   E   E
Transp wind spd.5   6   8   9   9   8   8   8   8   8   8
Dispersion idx..5   7   17  28  35  36  37  42  45  44  33
LVORI...........9   8   4   3   2   1   1   1   1   1   1

.FRIDAY NIGHT...

Sky/weather.........Mostly clear (10-20 percent). Patchy fog
developing.
Chance of pcpn......0 percent.
Min temperature.....Around 59.
Max humidity........97 percent.
Wind (20 ft)........East winds around 5 mph early in the evening
                    becoming light and variable.
Mixing height.......100 ft AGL.
Transport winds.....East 6 to 9 mph shifting to the southeast 3 to
                    5 mph after 3 am.
Dispersion index....18 decreasing to 3.
LVORI...............6.

TIME (EST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........17  21  18  14  11  13  14  16  16  15  15  20
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............77  73  71  69  68  67  65  64  63  62  61  60
RH..............62  71  76  81  84  87  90  93  93  97  97  96
20 FT wind dir..E   E   E   E   E   E   E   E   E   E   E   E
20 FT wind spd..5   5   3   3   2   2   2   2   1   1   1   1
20 FT wind gust.10  10  9   8   7   6   5   5   3   3   3   3
Mix hgt (kft)...1.7 0.4 0.1 0.2 0.5 0.4 0.4 0.4 0.4 0.4 0.4 0.3
Transp wind dir.NE  NE  E   E   E   E   E   E   E   SE  SE  SE
Transp wind spd.8   8   9   9   9   8   7   6   6   5   5   3
Dispersion idx..18  4   4   4   4   4   3   3   3   2   2   2
LVORI...........2   3   4   5   6   6   6   7   8   10  9   10

.SATURDAY...

Sky/weather.........Patchy fog early, then mostly sunny (15-25 percent).
Chance of pcpn......0 percent.
Max temperature.....Around 83.
Min humidity........48 percent.
Wind (20 ft)........Light winds.
Mixing height.......5100 ft AGL.
Transport winds.....East 3 to 6 mph shifting to the northeast
                    around 5 mph late in the afternoon.
Dispersion index....3 increasing to 24.
LVORI...............6.

TIME (EST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........25  30  23  16  9   12  16  19  18  18  17  20
Weather cov.....
Weather type....
Tstm cov........
Chc of pcpn (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............59  60  65  71  76  79  81  81  83  83  82  79
RH..............100 100 90  81  74  64  58  54  49  48  49  54
20 FT wind dir..NE  NE  NE  E   E   E   NE  NE  NE  NE  NE  NE
20 FT wind spd..1   1   1   2   2   3   3   3   3   3   3   3
20 FT wind gust.3   3   3   5   5   6   6   6   7   7   7   7
Mix hgt (kft)...0.2 0.4 0.9 1.7 2.5 3.3 4.0 4.6 5.0 5.1 4.7 3.4
Transp wind dir.E   E   E   E   E   E   E   E   E   NE  NE  NE
Transp wind spd.3   3   5   5   6   6   5   5   5   5   5   5
Dispersion idx..1   3   5   11  19  24  24  25  26  27  25  20
LVORI...........10  9   6   4   3   3   2   2   2   2   2   2

$$
Forecaster...Ingram-Westover
Requested by...Thomas Gonzalez
Type of request...PRESCRIBED
.TAG 2526463.0/MFL
.DELDT 11/21/25
.FormatterVersion 2.0.0