109
FNUS52 KKEY 290759
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
359 AM EDT Mon Sep 29 2025

.Discussion...
Moderate to fresh northwesterly breezes will continue across the
Florida Keys through Tuesday, as Tropical Storm Imelda spins to
the east of the Florida Peninsula and the wind field expands.
This will support several forecast periods of elevated dispersion
indices. Breezes will slacken thereafter, as Imelda slides
eastward into the west- central North Atlantic. Rain and thunder
chances will remain low through Tuesday, then slowly creep back up
to near normal levels by mid- week. Despite the mainly dry
conditions, minimum relative humidity values will remain well
above 60%.

FLZ076>078-300215-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
359 AM EDT Mon Sep 29 2025

                      Today        Tonight      Tue

Cloud Cover           Mclear       Mclear       Mclear
Chance Precip (%)     20           20           20
Chance of Thunder (%) 20           20           20
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          91           78           91
Min/Max RH %          61           93           61
Wind 20ft AM (mph)    NW  9                     W 11
Wind 20ft PM (mph)    NW 11        NW 11        W 11
Precip Duration       1            1            1
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.00         0.01         0.02
Mixing Hgt(ft-agl)    3700         1900         4100
Transport Wnd (mph)   NW 18        NW 18        NW 18
Dispersion Index      43           25           40
Max LVORI             4            4            4

Remarks...None.

$$

.FORECAST FOR DAYS 3 THROUGH 7...
.TUESDAY NIGHT...Mostly clear with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 70s. West winds
around 10 mph.
.WEDNESDAY...Sunny with a chance of showers and a slight chance
of thunderstorms. Highs in the upper 80s. Northwest winds around
5 mph.
.WEDNESDAY NIGHT...Mostly clear with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 70s. West winds
around 5 mph.
.THURSDAY...Sunny with a chance of showers and a slight chance of
thunderstorms. Highs in the upper 80s. North winds around 5 mph.
.THURSDAY NIGHT...Mostly clear with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 70s. Northeast
winds around 10 mph.
.FRIDAY...Mostly sunny with a chance of showers and a slight
chance of thunderstorms. Highs in the mid 80s. Northeast winds
around 10 mph.
.FRIDAY NIGHT...Partly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 70s. East winds
around 10 mph.
.SATURDAY...Mostly sunny with a chance of showers and a slight
chance of thunderstorms. Highs in the mid 80s. East winds around
10 mph.
.SATURDAY NIGHT...Partly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the upper 70s. East winds
around 5 mph.
.SUNDAY...Mostly sunny with a chance of showers and a slight
chance of thunderstorms. Highs in the upper 80s. Southeast winds
around 5 mph.

$$