093  
FNUS73 KLSX 031213  
FWSLSX  
 
SPOT FORECAST FOR OVERLOOK GLADE UNIT...MSP-DNR  
NATIONAL WEATHER SERVICE SAINT LOUIS MO  
613 AM CST FRI DEC 3 2021  
 
FORECAST IS BASED ON IGNITION TIME OF 1000 CST ON DECEMBER 03.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE  
NATIONAL WEATHER SERVICE.  
   
DISCUSSION
 
 
SUSTAINED SURFACE WINDS OF AROUND 5-7 MPH OUT OF THE SOUTHWEST  
ARE EXPECTED AT INGNITION THROUGH THE MID AFTERNOON. WINDS WILL  
REMAIN LIGHT, BUT GRADUALLY SHIFT THROUGH THE LATE AFTERNOON TO OUT OF  
THE NORTH BY 8PM. NO RAIN IS EXPECTED TODAY, AND MINIMUM RELATIVE  
HUMIDITY OF AROUND 45 PERCENT IS FORECAST THIS AFTERNOON.  
 
TONIGHT, WINDS WILL REMAIN LIGHT AND OUT OF THE NORTH AS RELATIVE  
HUMIDITY INCREASES TO AROUND 90 PERCENT. TOMORROW, WINDS WILL  
REMAIN LIGHT AND GRADUALLY SHIFT TO OUT OF THE EAST DURING THE  
AFTERNOON BECOMING SOUTHEASTERLY IN THE EVENING. RELATIVE HUMIDITY  
IS FORECAST TO DROP TO NEAR 40 PERCENT TOMORROW AFTERNOON. RAIN  
IS NOT EXPECTED TOMORROW.  
 
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
POP.................0 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....60 AT IGNITION...MAX 70.  
MIN HUMIDITY........60 PERCENT AT IGNITION...MIN 47 PERCENT.  
20-FOOT WINDS.......WINDS SOUTHWEST AT 5 TO 7 MPH.  
EYE LEVEL WINDS.....WINDS SOUTHWEST AT 5 MPH OR LESS.  
HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED  
FIRE GROWTH AT IGNITION...MAX 4.  
MIXING HEIGHT.......800 FT AGL AT IGNITION...OTHERWISE MAX 1800 FT  
AGL.  
TRANSPORT WINDS.....SOUTHWEST 7 TO 14 MPH.  
SMOKE DISPERSAL.....POOR /1430 M/S-M/ AT IGNITION. MAX...POOR /2880  
M/S-M/.  
 
TIME (CST) 10 AM NOON 2 PM 4 PM 6 PM 8 PM  
SKY (%).........0 2 5 22 34 48  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE NONE NONE  
TSTM COV........  
CWR.............0 0 0 0 0 0  
LAL.............1 1 1 1 1 1  
TEMP............60 66 69 66 60 56  
RH..............60 52 49 52 69 80  
20 FT WIND......SW 6 SW 6 SW 6 SW 5 SW 4 NW 3  
20 FT WIND GUST.15 14 14 12 7 7  
EYE LEVEL WIND..SW 3 SW 3 SW 3 SW 2 SW 2 NW 1  
EYE LVL WND GST.7 6 6 6 3 3  
MIX HGT (KFT)...0.8 1.4 1.8 1.0 0.4 0.5  
TRANSPORT WIND..W 14 W 9 SW 10 SW 10 SW 8 S 10  
HAINES INDEX....4 4 4 4 3 3  
VRATE KT-FT/1K..9 11 16 9 3 5  
VENTRATE CAT....POOR POOR POOR POOR POOR POOR  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING  
PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING  
PARTLY CLOUDY (40-50 PERCENT).  
POP.................10 PERCENT.  
LAL.................NO TSTMS.  
MIN TEMPERATURE.....MIN 42.  
MAX HUMIDITY........MAX 89 PERCENT.  
20-FOOT WINDS.......WINDS BECOMING NORTH 5 TO 11 MPH WITH  
GUSTS TO AROUND 24 MPH IN THE LATE EVENING AND  
OVERNIGHT.  
EYE LEVEL WINDS.....WINDS BECOMING NORTH 5 MPH WITH  
GUSTS TO AROUND 10 TO 15 MPH IN THE LATE EVENING AND  
OVERNIGHT.  
HAINES INDEX........3 TO 4 OR VERY LOW TO LOW POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......MIN 400 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 6 TO 10 MPH SHIFTING TO THE NORTH 10  
TO 18 MPH IN THE LATE EVENING AND OVERNIGHT,  
THEN INCREASING TO 20 TO 21 MPH EARLY IN THE  
MORNING.  
SMOKE DISPERSAL.....POOR (310 M/S-M).  
   
SATURDAY
 
 
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).  
POP.................0 PERCENT.  
LAL.................NO TSTMS.  
MAX TEMPERATURE.....MAX 53.  
MIN HUMIDITY........MIN 44 PERCENT.  
20-FOOT WINDS.......NORTHEAST WIND 7 TO 11 MPH. GUSTS UP TO 29 MPH  
UNTIL EARLY AFTERNOON.  
EYE LEVEL WINDS.....NORTHEAST WIND 5 MPH. GUSTS OF 10 TO 15 MPH  
UNTIL EARLY AFTERNOON.  
HAINES INDEX........4 TO 5 OR LOW TO MODERATE POTENTIAL FOR LARGE  
PLUME DOMINATED FIRE GROWTH.  
MIXING HEIGHT.......MAX 2700 FT AGL.  
TRANSPORT WINDS.....NORTHEAST 21 TO 23 MPH DECREASING TO 12 TO 13  
MPH IN THE AFTERNOON.  
SMOKE DISPERSAL.....POOR (2200 M/S-M) EARLY IN THE MORNING  
INCREASING TO MARGINAL MAX (5000 M/S-M) IN THE  
AFTERNOON.  
 

 
FORECASTER...ELMORE  
REQUESTED BY...HARLEE SCHERRER  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2121890.1/LSX  
.DELDT 12/03/21  
.FORMATTERVERSION 2.0.0  
 
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