753  
FNUS73 KLSX 021521  
FWSLSX  
 
SPOT FORECAST FOR SITL TRAINING...FEMA  
NATIONAL WEATHER SERVICE SAINT LOUIS MO  
1021 AM CDT THU APR 2 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 1100 CDT ON APRIL 02.  
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE  
NATIONAL WEATHER SERVICE.  
   
..WIND ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING  
 
   
DISCUSSION  
 
VERY BREEZY SOUTHERLY WINDS ARE EXPECTED THROUGH THIS EVENING AHEAD  
OF A COLD FRONT. SPEEDS WILL WEAKEN BY LATE EVENING, WITH LIGHTER  
SOUTHERLY WINDS FAVORED THROUGH FRIDAY. DRY WEATHER IS FAVORED  
INTO EARLY THIS AFTERNOON BUT CHANCES OF SHOWERS INCREASE INTO  
THE EVENING. THE BEST CHANCES (50-60%) ARE FROM ABOUT 4 TO 6 PM.  
SOME OF THE STORMS MAY BE STRONG TO SEVERE, WITH LARGE HAIL, DAMAGING  
WIND GUSTS, AND EVEN A TORNADO ALL POSSIBLE. DRY WEATHER IS FAVORED  
FOR THE MOST PART OVERNIGHT TONIGHT THROUGH FRIDAY BEFORE CHANCES  
INCREASE AGAIN FRIDAY NIGHT.  
   
REST OF TODAY  
 
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SHOWERS LIKELY  
AND CHANCE OF THUNDERSTORMS IN THE AFTERNOON.  
CWR.................42 PERCENT.  
CHANCE OF THUNDER...37 PERCENT.  
TEMPERATURE.........73 AT FORECAST START...MAX 76.  
RH..................71 PERCENT AT FORECAST START...MIN 62 PERCENT.  
SURFACE WINDS (MPH).SOUTH WINDS 24 TO 28 MPH WITH GUSTS TO AROUND  
40 MPH.  
MIXING HEIGHT.......2900 FT AGL AT FORECAST START...OTHERWISE MAX  
4400 FT AGL.  
 
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P  
SKY (%).........72 81 90 92 92 92 90 83 67 48 10 22  
WEATHER COV..... SCH SCH CHC LKY LKY LKY CHC CHC CHC CHC CHC  
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW RW RW  
TSTM COV........ SCH CHC CHC CHC CHC CHC CHC CHC CHC SCH  
CWR.............40 40 40 40 40 40 40 30 30 30 30 30  
CHC OF THDR (%).0 0 20 30 30 40 40 40 30 30 30 20  
TEMP............73 74 76 76 75 74 71 70 70 69 69 68  
RH..............71 69 64 62 64 66 79 81 81 81 81 84  
SURFACE WND DIR.S S S S S S S S S S S S  
SURFACE WND SPD.26 26 28 28 26 25 24 23 22 21 20 18  
SURFACE WND GST.37 39 39 40 39 38 37 35 32 35 31 30  
MIX HGT (KFT)...2.9 3.4 4.2 4.4 4.0 2.5 2.1 1.3 0.8 0.8 0.8 0.8  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING  
PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (55-65 PERCENT). CHANCE OF  
SHOWERS AND THUNDERSTORMS IN THE EVENING, THEN  
SHOWERS LIKELY AND SLIGHT CHANCE OF  
THUNDERSTORMS OVERNIGHT.  
CWR.................30 PERCENT.  
CHANCE OF THUNDER...37 PERCENT.  
TEMPERATURE.........MIN 65.  
RH..................MAX 93 PERCENT.  
SURFACE WINDS (MPH).SOUTH WINDS 13 TO 23 MPH WITH GUSTS TO AROUND  
35 MPH SHIFTING TO THE SOUTHWEST AROUND 10 MPH  
WITH GUSTS TO AROUND 20 MPH AFTER 3 AM.  
MIXING HEIGHT.......MIN 700 FT AGL.  
   
FRIDAY  
 
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). SHOWERS LIKELY  
AND CHANCE OF THUNDERSTORMS.  
CWR.................23 PERCENT.  
CHANCE OF THUNDER...43 PERCENT.  
TEMPERATURE.........MAX 80.  
RH..................MIN 62 PERCENT.  
SURFACE WINDS (MPH).SOUTH WINDS 9 TO 17 MPH.  
MIXING HEIGHT.......MAX 3800 FT AGL.  
 
 
FORECASTER...GOSSELIN  
REQUESTED BY...MATT MARKOWSKI  
TYPE OF REQUEST...HAZMAT  
.TAG 2608864.0/LSX  
.DELDT 04/02/26  
.FORMATTERVERSION 2.0.0  
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