FNUS52 KKEY 130843
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
443 AM EDT Fri Mar 13 2026

.Discussion...
Generally weak and nebulous flow will remain across the Keys
through tonight. High pressure over the Atlantic will begin to
slowly nudge back to the west for Saturday. This will result in
freshening mainly southeast breezes. Moisture remains limited
today with slight chances of showers. Tonight through the weekend,
moisture will increase further resulting in rising rain chances.
Instability will also increase leading to rising thunder chances.
The more beneficial rain remains on track to effect the Keys over
the weekend through early next week. Min RH values will be near 70
percent today and Saturday with good RH recovery to near 90
percent overnight.

FLZ076>078-140045-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
443 AM EDT Fri Mar 13 2026

                      Today        Tonight      Sat

Cloud Cover           Pcldy        Pcldy        Mclear
Chance Precip (%)     20           40           50
Chance of Thunder (%) 20           20           20
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          82           73           82
Min/Max RH %          69           90           70
Wind 20ft AM (mph)    Lgt/Var                   SE  5
Wind 20ft PM (mph)    Lgt/Var      Lgt/Var      SE  6
Precip Duration       1            2            2
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.07         0.04         0.09
Mixing Hgt(ft-agl)    2900         500          2700
Transport Wnd (mph)   SE  7        SE  7        SE 12
Dispersion Index      18           4            26
Max LVORI             6            6            5

Remarks...None.

$$

.FORECAST FOR DAYS 3 THROUGH 7...
.SATURDAY NIGHT...Partly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 70s. Southeast
winds around 5 mph.
.SUNDAY...Partly sunny with showers likely and a slight chance of
thunderstorms. Highs in the lower 80s. Southeast winds around
10 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 70s. Southeast
winds around 10 mph.
.MONDAY...Sunny with a chance of showers and a slight chance of
thunderstorms. Highs in the lower 80s. Southeast winds around
10 mph.
.MONDAY NIGHT...Mostly cloudy with showers likely and a chance of
thunderstorms. Lows around 70. South winds around 10 mph.
.TUESDAY...Mostly cloudy with a chance of showers and a slight
chance of thunderstorms. Highs in the upper 70s. West winds
around 15 mph.
.TUESDAY NIGHT...Cloudy with a chance of showers and a slight
chance of thunderstorms. Lows in the mid 60s. North winds around
15 mph.
.WEDNESDAY...Partly sunny with a chance of showers and a slight
chance of thunderstorms. Highs in the mid 70s. North winds around
15 mph.
.WEDNESDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 60s. North winds
around 15 mph.
.THURSDAY...Mostly sunny with a chance of showers. Highs in the
mid 70s. North winds around 15 mph.

$$

MJV