462  
FNUS52 KKEY 221045  
FWFKEY  
 
FIRE WEATHER PLANNING FORECAST FOR THE FLORIDA KEYS  
NATIONAL WEATHER SERVICE KEY WEST FL  
645 AM EDT WED MAR 22 2017  
   
DISCUSSION
 
 
A MOSTLY CLEAR AND DRY WEATHER PATTERN WILL PERSIST TODAY THROUGH  
THURSDAY MORNING. MINIMUM AFTERNOON RELATIVE HUMIDITY VALUES WILL  
BE NEAR 50 PERCENT TODAY AND 55-60 PERCENT ON THURSDAY. RAIN  
CHANCES WILL INCREASE FROM EAST TO WEST THURSDAY AFTERNOON AND  
EVENING, IN ASSOCIATION WITH A ROBUST EASTERLY WIND SURGE. WIND  
SPEEDS WILL REMAIN NEAR 10 MPH OR LESS TODAY AND TONIGHT, AND  
INCREASE GRADUALLY ON THURSDAY. A PERIOD OF LIGHT AND VARIABLE  
BREEZES LOOKS PROBABLE FOR TONIGHT, WITH CORRESPONDING LOW  
DISPERSION INDICES BELOW 10.  
 
FLZ076-231130-  
MONROE UPPER KEYS-  
INCLUDING THE CITY OF KEY LARGO  
645 AM EDT WED MAR 22 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER MCLEAR CLEAR PCLDY  
CHANCE PRECIP (%) 5 5 20  
WEATHER TYPE NONE NONE SHOWERS  
TEMP 77 67 78  
RH % 50 81 60  
20FT WIND AM(MPH) N 8 NE 10  
20FT WIND PM(MPH) E 8 SW 8 NE 18  
PRECIP DURATION 1  
PRECIP BEGIN 8 AM  
PRECIP END CONTINUING  
PRECIP AMOUNT 1  
LAL 1 1 1  
MIXING HGT(FT-AGL) 4000 900 4000  
TRANSPORT WND(MPH) N 8 N 9 E 20  
DISPERSION INDEX 32 6 61  
MAX LVORI 4  
 
REMARKS...NONE.  
 
FLZ077-231130-  
MONROE MIDDLE KEYS-  
INCLUDING THE CITY OF MARATHON  
645 AM EDT WED MAR 22 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER CLEAR CLEAR MCLEAR  
CHANCE PRECIP (%) 5 5 10  
WEATHER TYPE NONE NONE SHOWERS  
TEMP 78 66 80  
RH % 50 78 58  
20FT WIND AM(MPH) NE 8 NE 10  
20FT WIND PM(MPH) NE 6 NW 6 E 14  
PRECIP DURATION 1  
PRECIP BEGIN 8 AM  
PRECIP END CONTINUING  
PRECIP AMOUNT 1  
LAL 1 1 1  
MIXING HGT(FT-AGL) 4100 900 4200  
TRANSPORT WND(MPH) N 8 N 13 E 15  
DISPERSION INDEX 54 11 79  
MAX LVORI 4  
 
REMARKS...NONE.  
 
FLZ078-231130-  
MONROE LOWER KEYS-  
INCLUDING THE CITY OF KEY WEST  
645 AM EDT WED MAR 22 2017  
 
TODAY TONIGHT THU  
 
CLOUD COVER MCLEAR CLEAR MCLEAR  
CHANCE PRECIP (%) 5 5 5  
WEATHER TYPE NONE NONE NONE  
TEMP 78 66 79  
RH % 52 81 60  
20FT WIND AM(MPH) NE 8 N 10  
20FT WIND PM(MPH) NE 8 NW 8 E 11  
PRECIP DURATION  
PRECIP BEGIN  
PRECIP END  
PRECIP AMOUNT  
LAL 1 1 1  
MIXING HGT(FT-AGL) 4000 900 3900  
TRANSPORT WND(MPH) NE 10 NW 10 E 18  
DISPERSION INDEX 47 12 82  
MAX LVORI 4  
 
REMARKS...NONE.  
   
FORECAST FOR DAYS 3 THROUGH 7
 
   
THURSDAY NIGHT
 
MOSTLY CLOUDY IN THE EVENING THEN BECOMING  
PARTLY CLOUDY. BECOMING BREEZY WITH A CHANCE OF SHOWERS. LOWS IN  
THE UPPER 60S. EAST WINDS INCREASING TO 15 TO 20 MPH. CHANCE OF  
RAIN 30 PERCENT.   
FRIDAY
 
MOSTLY SUNNY AND BREEZY WITH A SLIGHT CHANCE OF  
SHOWERS. HIGHS NEAR 80. EAST WINDS 15 TO 20 MPH. CHANCE OF RAIN  
20 PERCENT.    
FRIDAY NIGHT
 
PARTLY CLOUDY AND BREEZY WITH A SLIGHT CHANCE OF  
SHOWERS. LOWS NEAR 70. EAST WINDS 15 TO 20 MPH. CHANCE OF RAIN 20  
PERCENT.    
SATURDAY
 
MOSTLY SUNNY WITH A SLIGHT CHANCE OF SHOWERS. HIGHS  
NEAR 80. EAST WINDS NEAR 15 MPH. CHANCE OF RAIN 10 PERCENT.    
SATURDAY NIGHT THROUGH SUNDAY NIGHT
 
CLEAR WITH A SLIGHT CHANCE  
OF SHOWERS. LOWS NEAR 70. HIGHS NEAR 80. EAST WINDS NEAR 15 MPH.  
CHANCE OF RAIN 10 PERCENT EACH NIGHT AND DAY.   
MONDAY AND MONDAY NIGHT
 
PARTLY CLOUDY WITH A SLIGHT CHANCE OF  
SHOWERS. HIGHS NEAR 80. LOWS NEAR 70. EAST WINDS NEAR 15 MPH.  
CHANCE OF RAIN 10 PERCENT BOTH MONDAY AND MONDAY NIGHT.   
TUESDAY
 
SUNNY WITH A SLIGHT CHANCE OF SHOWERS. HIGHS NEAR 80.  
EAST WINDS NEAR 15 MPH. CHANCE OF RAIN 10 PERCENT.  
 

 
 
KASPER  
 
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