FNUS52 KKEY 110935
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
435 AM EST Wed Nov 11 2026

...DISPERSION INDICES BELOW 20 ARE POSSIBLE THURSDAY AFTERNOON...

.Discussion...
Some low level moisture is returning the region this morning but
looks to be less than expected. Therefore rain chances will remain
slight at best for today. Meanwhile, high pressure northeast of
the Bahamas will shift further east out across the North Atlantic,
allowing winds to go light and times variable by the late
afternoon and early evening. This will lead to poor dispersion
rates this afternoon and again Thursday. Afternoon min RH values
will fall to near 70 percent and recover overnight to near 90
percent. A cold front will approach from the north late Thursday,
bringing a greater chance for thunderstorms as well as
strengthening winds.

FLZ076>078-120200-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
435 AM EST Wed Nov 11 2026

                      Today        Tonight      Thu

Cloud Cover           Pcldy        Pcldy        Pcldy
Chance Precip (%)     10           10           20
Chance of Thunder (%) 0            10           20
Weather Type          Showers      Tstms        Tstms
Max/Min Temp          84           75           83
Min/Max RH %          68           88           72
Wind 20ft AM (mph)    SE  5                     Lgt/Var
Wind 20ft PM (mph)    Lgt/Var      Lgt/Var      Lgt/Var
Precip Duration       1            1            1
Precip Begin          7 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.00         0.00         0.00
Mixing Hgt(ft-agl)    2900         1000         2500
Transport Wnd (mph)   SE  7        S  2         W  7
Dispersion Index      24           2            18
Max LVORI             4            5            5

Remarks...None.

$$

.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 70s. West to
northeast winds 5 to 10 mph, increasing to near 10 mph.
.FRIDAY...Partly sunny with a slight chance of showers. Highs in
the lower 80s. West to northwest winds near 10 mph, increasing to
10 to 15 mph.
.FRIDAY NIGHT...Mostly cloudy with a slight chance of showers.
Lows in the mid 60s. North winds 10 to 15 mph, increasing to 15 to
20 mph.
.SATURDAY...Sunny. Highs in the mid 70s. North to northeast winds
15 to 20 mph, decreasing to 10 to 15 mph.
.SATURDAY NIGHT...Partly cloudy. Lows in the upper 60s. North
winds 10 to 15 mph.
.SUNDAY...Partly sunny with a slight chance of showers. Highs
around 80. Northeast winds 10 to 15 mph, increasing to 15 to 20
mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 70s. Northeast
winds 15 to 20 mph.
.MONDAY...Partly sunny with a chance of showers and
thunderstorms. Highs in the lower 80s. East winds near 20 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 70s. East winds
around 20 mph.
.TUESDAY...Partly sunny with a chance of showers. Highs in the
lower 80s. East winds near 20 mph, decreasing to 15 to 20 mph.

$$