130
FNUS52 KKEY 210835
FWFKEY
FIRE WEATHER PLANNING FORECAST FOR THE FLORIDA KEYS
NATIONAL WEATHER SERVICE KEY WEST FL
435 AM EDT THU MAY 21 2026
DISCUSSION
ENHANCED MOISTURE ACROSS THE KEYS WILL MAINTAIN NEAR NORMAL RAIN
AND THUNDER CHANCES THROUGH FRIDAY. THAT BEING SAID, THE ISOLATED
TO 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 50S OVER THE NEXT
COUPLE OF DAYS. MIN RH VALUES WILL BE IN THE MID 60S PERCENT TODAY
AND FRIDAY WITH GOOD RH RECOVERY OVERNIGHT TO THE MID 80S
PERCENT.
FLZ076>078-220130-
MONROE UPPER KEYS-MONROE MIDDLE KEYS-MONROE LOWER KEYS-
INCLUDING THE CITIES OF KEY LARGO, MARATHON, AND KEY WEST
435 AM EDT THU MAY 21 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLEAR PCLDY
CHANCE PRECIP (%) 30 20 30
CHANCE OF THUNDER (%) 20 20 20
WEATHER TYPE TSTMS TSTMS TSTMS
MAX/MIN TEMP 88 80 89
MIN/MAX RH % 67 86 66
WIND 20FT AM (MPH) E 9 E 10
WIND 20FT PM (MPH) E 9 E 11 E 9
PRECIP DURATION 2 1 2
PRECIP BEGIN 6 AM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
PRECIP AMOUNT 0.00 0.00 0.00
MIXING HGT(FT-AGL) 3600 2400 3500
TRANSPORT WND (MPH) E 15 SE 20 E 16
DISPERSION INDEX 55 29 56
MAX LVORI 3 3 3
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLEAR WITH A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 80S. EAST WINDS
AROUND 10 MPH.
SATURDAY
SUNNY WITH A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. HIGHS IN THE UPPER 80S. EAST WINDS AROUND 10 MPH.
SATURDAY NIGHT
MOSTLY CLEAR WITH A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 80S. EAST WINDS
AROUND 10 MPH.
SUNDAY
SUNNY WITH A CHANCE OF SHOWERS AND A SLIGHT CHANCE OF
THUNDERSTORMS. HIGHS IN THE UPPER 80S. EAST WINDS AROUND 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY WITH A SLIGHT CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 80S. EAST WINDS AROUND 15 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. EAST WINDS AROUND
15 MPH.
MONDAY NIGHT
PARTLY CLOUDY WITH A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF 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.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS. LOWS IN THE LOWER 80S. EAST WINDS
AROUND 15 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE UPPER 80S. EAST WINDS AROUND 15 MPH.
MJV
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