356
FNUS52 KKEY 300825
FWFKEY

Fire Weather Planning Forecast for the Florida Keys
National Weather Service Key West FL
425 AM EDT Thu Jul 30 2026

...DISPERSION INDICES LESS THAN 20 ARE EXPECTED ACROSS MUCH OF THE
REGION ON FRIDAY AFTERNOON...

.Discussion...
A reverse cloud line is possible again today under southwesterly
flow. Waterspout formation is possible with any cloud line that
does try and develop along with a slight chance of showers and
thunderstorms. Light to gentle southwest breezes are expected
today and tonight, potentially becoming variable on Friday. Min RH
values will be in the lower 60s percent today and Friday with
decent RH recovery overnight to the mid 80s percent. Poor to fair
dispersion indices also expected today and Friday.

FLZ076>078-310115-
Monroe Upper Keys-Monroe Middle Keys-Monroe Lower Keys-
Including the cities of Key Largo, Marathon, and Key West
425 AM EDT Thu Jul 30 2026

                      Today        Tonight      Fri

Cloud Cover           Pcldy        Pcldy        Pcldy
Chance Precip (%)     10           0            10
Chance of Thunder (%) 10           0            10
Weather Type          Tstms        None         Tstms
Max/Min Temp          91           82           91
Min/Max RH %          62           84           62
Wind 20ft AM (mph)    SW  6                     Lgt/Var
Wind 20ft PM (mph)    SW  6        W  5         Lgt/Var
Precip Duration       1                         1
Precip Begin          9 AM                      8 AM
Precip End            6 PM                      6 PM
Precip Amount         0.00         0.00         0.00
Mixing Hgt(ft-agl)    3400         1500         3200
Transport Wnd (mph)   SW  8        SW  5        W  6
Dispersion Index      27           5            13
Max LVORI             4            5            4

Remarks...None.

$$

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

$$

MJV