573
FNUS52 KKEY 120759
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
359 AM EDT Wed Aug 12 2026

...DISPERSION INDICES LESS THAN 20 WILL BE POSSIBLE ACROSS THE
FLORIDA KEYS ON WEDNESDAY AND THURSDAY AFTERNOONS...

.Discussion...
Low measurable rain and thunder chances will continue for the
next several days across the Florida Keys, with any activity
largely limited to afternoon broken island cloud lines or
convection moving off the South Florida Mainland. Despite the
generally dry conditions, afternoon minimum RH values are expected
to remain above 60 percent. Light easterly transport winds will
support low dispersion indices through Thursday.

FLZ076>078-130245-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
359 AM EDT Wed Aug 12 2026

                      Today        Tonight      Thu

Cloud Cover           Mclear       Pcldy        Mclear
Chance Precip (%)     10           10           10
Chance of Thunder (%) 10           0            10
Weather Type          Tstms        Showers      Tstms
Max/Min Temp          91           82           91
Min/Max RH %          62           83           62
Wind 20ft AM (mph)    Lgt/Var                   Lgt/Var
Wind 20ft PM (mph)    Lgt/Var      Lgt/Var      Lgt/Var
Precip Duration       1            1            1
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.02         0.00         0.00
Mixing Hgt(ft-agl)    3200         1600         3200
Transport Wnd (mph)   E  6         SE  5        E  6
Dispersion Index      19           3            19
Max LVORI             4            5            4

Remarks...None.

$$

.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly clear with a slight chance of showers
and thunderstorms. Lows in the lower 80s. East winds around
5 mph.
.FRIDAY...Sunny with a chance of showers and thunderstorms. Highs
in the lower 90s. East winds around 10 mph.
.FRIDAY NIGHT...Partly cloudy with a chance of showers and
thunderstorms. Lows in the lower 80s. East winds around 10 mph.
.SATURDAY...Mostly sunny with a chance of showers and
thunderstorms. Highs around 90. East winds around 10 mph.
.SATURDAY NIGHT...Mostly clear with a slight chance of showers.
Lows in the lower 80s. East winds around 10 mph.
.SUNDAY...Sunny. Highs around 90. East winds around 10 mph.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 80s. East winds
around 10 mph.
.MONDAY...Sunny. Highs around 90. East winds around 5 mph.
.MONDAY NIGHT...Mostly clear. Lows in the lower 80s. Northeast
winds around 5 mph.
.TUESDAY...Sunny with a slight chance of showers. Highs around
90. Northeast winds around 5 mph.

$$

BT