FNUS52 KKEY 120906
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
406 AM EST Thu Nov 12 2026

...DISPERSION INDICES LESS THAN 20 EXPECTED TODAY...

.Discussion...
Moisture across the region will be gradually increasing ahead of
an approaching frontal boundary located across south- central
Florida. This will result in slightly above normal rain/thunder
chances today. The front is poised to pass through the Keys late
this evening and overnight. Prior to the front's arrival, winds
will be light and variable through much of the morning and early
afternoon. This will result in dispersion indices below 20. Winds
will modestly increase overnight into Friday with a more robust
wind surge Friday night into Saturday.


FLZ076>078-130145-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
406 AM EST Thu Nov 12 2026

                      Today        Tonight      Fri

Cloud Cover           Pcldy        Pcldy        Pcldy
Chance Precip (%)     30           30           20
Chance of Thunder (%) 20           20           0
Weather Type          Tstms        Tstms        Showers
Max/Min Temp          84           72           82
Min/Max RH %          70           94           65
Wind 20ft AM (mph)    Lgt/Var                   NW  6
Wind 20ft PM (mph)    Lgt/Var      W  5         NW  8
Precip Duration       2            2            1
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   6 PM
Precip Amount         0.02         0.01         0.00
Mixing Hgt(ft-agl)    3100         900          3500
Transport Wnd (mph)   W  7         NW  9        NW 12
Dispersion Index      11           6            26
Max LVORI             5            6            4

Remarks...None.

$$

.FORECAST FOR DAYS 3 THROUGH 7...
.FRIDAY NIGHT...Mostly cloudy. Lows in the upper 60s. North winds
15 to 20 mph.
.SATURDAY...Mostly sunny. Highs in the mid 70s. North winds
15 to 20, decreasing to 10 to 15 mph.
.SATURDAY NIGHT...Partly cloudy. Lows in the mid 60s. North winds
10 to 15 mph, increasing to near 15 mph.
.SUNDAY...Partly sunny with a slight chance of showers. Highs in
the upper 70s. North winds near 15 mph, increasing to 15 to 20
mph.
.SUNDAY NIGHT...Mostly cloudy with a slight chance of showers.
Lows in the mid 70s. Northeast winds 15 to 20 mph.
.MONDAY...Partly sunny with a slight 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
20 to 25 mph.
.TUESDAY...Partly sunny with a chance of showers. Highs in the
lower 80s. East winds 20 to 25 mph, decreasing to near 20 mph.
.TUESDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 70s. Northeast
winds near 20 mph.
.WEDNESDAY...Mostly sunny with a chance of showers. Highs around
80. Northeast winds near 20 mph.

$$