366
FNUS52 KKEY 210828
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
428 AM EDT Thu Aug 21 2025

.Discussion...
Hurricane Erin will continue moving to the north to northeast
through tonight before turning to the northeast and accelerating
farther out into the North Atlantic. This will result in another
day or two of light to gentle southwest to west breezes. Moisture
remains plentiful but we lack a trigger mechanism to ignite more
widespread showers and thunderstorms. Therefore, 30% was
maintained for today with 20% through the weekend. Min RH values
are expected to be in the lower 60s percent today and near 60
percent on Friday with good RH recover to the upper 80s percent
tonight.

FLZ076>078-220215-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
428 AM EDT Thu Aug 21 2025

                      Today        Tonight      Fri

Cloud Cover           Mclear       Mclear       Mclear
Chance Precip (%)     30           20           20
Chance of Thunder (%) 20           20           20
Weather Type          Tstms        Tstms        Tstms
Max/Min Temp          93           82           94
Min/Max RH %          62           88           60
Wind 20ft AM (mph)    W  5                      Lgt/Var
Wind 20ft PM (mph)    W  5         Lgt/Var      Lgt/Var
Precip Duration       2            1            1
Precip Begin          6 AM         Continuing   Continuing
Precip End            Continuing   Continuing   Continuing
Precip Amount         0.01         0.04         0.07
Mixing Hgt(ft-agl)    3300         1500         3100
Transport Wnd (mph)   SW  9        SW  6        SW  6
Dispersion Index      30           5            19
Max LVORI             4            5            4

Remarks...None.

$$

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

$$

MJV