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FNUS52 KKEY 200844
FWFKEY
FIRE WEATHER PLANNING FORECAST FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
444 AM EDT WED MAY 20 2026
DISCUSSION
ENHANCED MOISTURE ACROSS THE KEYS WILL MAINTAIN NEAR NORMAL RAIN
AND THUNDER CHANCES TODAY. SLIGHTLY DRIER AIR MOVES IN FOR TONIGHT
AND THURSDAY LEADING TO SLIGHT CHANCES. THAT BEING SAID, THE
SCATTERED NATURE OF THESE SHOWERS WILL MEAN THAT RAINFALL AMOUNTS
WILL BE HIGHLY VARIABLE. GENTLE TO MODERATE EASTERLY BREEZES ARE
EXPECTED THROUGH THE NEXT FEW DAYS PEAKING IN THE EVENINGS AND
OVERNIGHT AND LULLING DURING THE AFTERNOON. THIS WILL KEEP DAYTIME
DISPERSION INDICES IN THE MID TO UPPER 50S OVER THE NEXT COUPLE
OF DAYS. MIN RH VALUES WILL BE IN THE MID 60S PERCENT TODAY AND
THURSDAY WITH GOOD RH RECOVERY OVERNIGHT TO THE MID 80S PERCENT.
FLZ076>078-210100-
MONROE UPPER KEYS-MONROE MIDDLE KEYS-MONROE LOWER KEYS-
INCLUDING THE CITIES OF KEY LARGO, MARATHON, AND KEY WEST
444 AM EDT WED MAY 20 2026
TODAY TONIGHT THU
CLOUD COVER MCLEAR MCLEAR MCLEAR
CHANCE PRECIP (%) 30 20 20
CHANCE OF THUNDER (%) 20 20 20
WEATHER TYPE TSTMS TSTMS TSTMS
MAX/MIN TEMP 88 80 90
MIN/MAX RH % 65 84 64
WIND 20FT AM (MPH) E 9 E 9
WIND 20FT PM (MPH) E 9 E 10 E 9
PRECIP DURATION 2 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) 3700 2400 3700
TRANSPORT WND (MPH) E 17 E 22 E 16
DISPERSION INDEX 56 25 58
MAX LVORI 4 4 3
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
10 MPH.
FRIDAY
SUNNY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE UPPER 80S. EAST WINDS AROUND 10 MPH.
FRIDAY NIGHT
MOSTLY CLEAR WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 80S. EAST WINDS AROUND 10 MPH.
SATURDAY
SUNNY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE UPPER 80S. EAST WINDS AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR WITH A SLIGHT CHANCE OF SHOWERS
AND THUNDERSTORMS. LOWS IN THE LOWER 80S. EAST WINDS AROUND
10 MPH.
SUNDAY
MOSTLY SUNNY WITH A SLIGHT CHANCE OF SHOWERS. HIGHS IN
THE UPPER 80S. EAST WINDS AROUND 15 MPH.
SUNDAY NIGHT
MOSTLY CLEAR WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 80S. EAST WINDS AROUND 15 MPH.
MONDAY
SUNNY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE UPPER 80S. EAST WINDS AROUND 15 MPH.
MONDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 80S. EAST WINDS AROUND 15 MPH.
TUESDAY
MOSTLY SUNNY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE UPPER 80S. EAST WINDS AROUND 15 MPH.
MJV
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