196  
FNUS72 KKEY 150609  
FWSKEY  
 
SPOT FORECAST FOR LITTLE PINE KEY RX...US FISH AND WILDLIFE SERVICE  
NATIONAL WEATHER SERVICE KEY WEST FL  
209 AM EDT FRI OCT 15 2021  
 
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (305) 295-1316 EXT 3, IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION
 
 
MORE OF THE SAME TODAY, WITH GENTLE NORTHEAST TO EAST BREEZES AND  
NEAR NORMAL RAIN CHANCES. ALTHOUGH THUNDERSTORMS ARE NOT  
ADVERTISED IN THE FORECAST, THERE MAY BE A FEW STORMS WHICH SLIDE  
SOUTHWEST OFF OF SOUTH FLORIDA THIS EVENING. LOW MIXING HEIGHTS  
AND DISPERSION SATURDAY MORNING WILL DEPEND ON THE AMOUNT OF  
DECOUPLING LITTLE PINE CAN EXPERIENCE, WITH WARM BATH WATERS  
SURROUNDING THE ISLAND WHICH WILL LIMIT LARGE SCALE RADIATIONAL  
COOLING. LIGHT AND VARIABLE BREEZES ARE EXPECTED SOMETIME ON  
SATURDAY, AHEAD OF A LITTLE DRIER AIR SUNDAY THROUGH MONDAY, WITH  
DEWPOINTS FALLING INTO THE UPPER 60S.  
   
TODAY
 
 
SKY/WEATHER.........SUNNY (15-25 PERCENT). SCATTERED SHOWERS.  
CHANCE OF PCPN......30 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 86.  
MIN HUMIDITY........65 PERCENT.  
EYE LEVEL WINDS.....EAST WINDS 6 TO 7 MPH.  
WIND (20 FT)........NORTHEAST WINDS 7 TO 8 MPH.  
MIXING HEIGHT.......3300 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 7 TO 10 MPH.  
DISPERSION INDEX....25 INCREASING TO 28 IN THE AFTERNOON.  
 
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM  
SKY COVER.......MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR MCLEAR  
WEATHER COV.....SCTTRD SCTTRD SCTTRD SCTTRD SCTTRD SCTTRD  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........  
CHC OF PCPN (%).30 30 30 30 30 30  
LAL.............1 1 1 1 1 1  
TEMP............79 79 83 85 86 86  
RH..............85 88 77 72 68 68  
20 FT WIND......E 10 NE 10 NE 10 NE 9 NE 8 NE 8  
20 FT WIND GUST.12 12 12 10 10 10  
EYE LEVEL WIND..E 7 NE 7 NE 7 NE 6 NE 6 NE 6  
EYE LVL WND GST.8 8 8 7 7 7  
MIX HGT (FT)....1600 1600 2400 3100 3300 3200  
TRANSPORT WIND..E 10 E 9 NE 9 NE 9 NE 8 NE 7  
DISPERSION......21 20 26 31 31 28  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT). SCATTERED  
SHOWERS.  
CHANCE OF PCPN......30 PERCENT.  
LAL.................NO TSTMS.  
MIN TEMPERATURE.....AROUND 79.  
MAX HUMIDITY........82-88 PERCENT.  
EYE LEVEL WINDS.....EAST WINDS 5 TO 6 MPH.  
WIND (20 FT)........EAST WINDS 6 TO 7 MPH.  
MIXING HEIGHT.......500 FT AGL.  
TRANSPORT WINDS.....EAST 7 TO 10 MPH.  
DISPERSION INDEX....17 DECREASING TO 11 OVERNIGHT.  
 
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM  
SKY COVER.......MCLEAR PCLDY PCLDY PCLDY PCLDY PCLDY  
WEATHER COV.....SCTTRD SCTTRD SCTTRD SCTTRD SCTTRD SCTTRD  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........  
CHC OF PCPN (%).30 30 30 30 30 30  
LAL.............1 1 1 1 1 1  
TEMP............84 81 81 80 79 80  
RH..............72 79 79 82 82 79  
20 FT WIND......E 8 E 7 E 7 E 8 E 8 E 8  
20 FT WIND GUST.9 8 8 9 9 9  
EYE LEVEL WIND..E 6 E 5 E 5 E 6 E 6 E 6  
EYE LVL WND GST. 6 6  
MIX HGT (FT)....2400 1400 1300 1000 500 700  
TRANSPORT WIND..NE 7 E 8 E 9 E 10 E 10 E 9  
DISPERSION......21 14 16 15 11 10  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT). ISOLATED SHOWERS.  
CHANCE OF PCPN......25 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....AROUND 86.  
MIN HUMIDITY........63 PERCENT.  
EYE LEVEL WINDS.....NORTHEAST WINDS AROUND 5 MPH SHIFTING  
TO THE NORTH LATE IN THE AFTERNOON.  
WIND (20 FT)........EAST WINDS AROUND 6 MPH IN THE MORNING BECOMING  
LIGHT.  
MIXING HEIGHT.......3800 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 8 TO 9 MPH SHIFTING TO THE NORTH  
AROUND 8 MPH LATE IN THE AFTERNOON.  
DISPERSION INDEX....7 INCREASING TO 35.  
 
TIME (EDT) 6 AM 9 AM NOON 3 PM  
SKY COVER.......PCLDY PCLDY MCLEAR PCLDY  
WEATHER COV.....SCTTRD ISOLTD ISOLTD ISOLTD  
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR  
TSTM COV........  
CHC OF PCPN (%).30 20 20 20  
LAL.............1 1 1 1  
TEMP............79 81 85 86  
RH..............82 77 67 65  
20 FT WIND......E 7G9 NE 7 NE 5G6 NE 3G5  
EYE LEVEL WIND..E 5G6 NE 5 NE 4 NE 2G4  
MIX HGT (FT)....700 1500 3500 3800  
TRANSPORT WIND..NE 8 NE 8 NE 8 N 8  
DISPERSION......8 16 36 35  
 

 
FORECASTER...CLR  
REQUESTED BY...BRIAN PIPPIN  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2119515.0/KEY  
.DELDT 10/15/21  
.FORMATTERVERSION 1.0.26  
.EMAIL BRIAN_PIPPIN@FWS.GOV  
 
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