232
FNUS73 KLSX 101324
FWSLSX
SPOT FORECAST FOR WHITE RIVER TRACE RXB...MO DNR
NATIONAL WEATHER SERVICE SAINT LOUIS MO
824 AM CDT WED SEP 10 2025
FORECAST IS BASED ON IGNITION TIME OF 0900 CDT ON SEPTEMBER 10.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE.
DISCUSSION
SOME SCATTERED MIDLEVEL CLOUDS WILL BE AROUND TODAY, THOUGH LARGELY
IN THE MORNING. WINDS WILL BE LIGHT/VARIABLE THROUGH THE PERIOD.
MIXING HEIGHTS WILL INCREASE FAIRLY RAPIDLY THIS MORNING, RISING
ABOVE 4000 FEET AGL BEFORE NOON AND PEAKING ABOVE 6000 FEET THIS
AFTERNOON. WHILE MIXING WILL BE DEEP, THE VERY LIGHT WINDS THROUGHOUT
THE MIXED LAYER LIMIT VENTILATION RATES MOSTLY TO POOR THOUGH PEAKING
AT FAIR THIS AFTERNOON.
REST OF TODAY
SKY/WEATHER.........SUNNY (20-30 PERCENT).
TEMPERATURE.........67 AT IGNITION...MAX 87.
RH..................65 PERCENT AT IGNITION...MIN 35 PERCENT.
EYE LEVEL WINDS.....VERY LIGHT AND VARIABLE USING AN ADJUSTMENT FACTOR OF 0.4.
WIND (20 FT)........WINDS SOUTHWEST AT 2 MPH AT
IGNITION...OTHERWISE LIGHT WINDS.
MIXING HEIGHT.......500 FT AGL AT IGNITION...OTHERWISE MAX 6500 FT
AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 7 MPH SHIFTING TO THE WEST 5
TO 7 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR /500 M/S-M/ AT IGNITION. MAX...FAIR /6110
M/S-M/.
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM
SKY (%).........9 1 13 25 37 39 41 43 49 50 51 54
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............67 74 78 81 84 86 87 87 86 84 78 73
RH..............65 53 47 41 37 36 35 36 39 41 52 62
20 FT WIND DIR..SW SW SW W W W W W W W S S
20 FT WIND SPD..2 3 4 4 4 4 4 4 3 3 2 2
20 FT WIND GUST.5 7 8 7 7 8 8 8 7 6 5 4
EYE LVL WND DIR.SW SW SW W W W W W W W S S
EYE LVL WND SPD.1 1 2 2 2 2 2 2 1 1 1 1
EYE LVL WND GST.2 3 4 3 3 4 4 4 3 3 2 2
MIX HGT (KFT)...0.5 1.1 2.4 4.4 5.2 5.9 6.4 6.5 5.5 3.3 0.4 0.5
TRANSP WIND DIR.SW SW W W W W W W W W NW SW
TRANSP WIND SPD.7 7 7 7 7 6 6 7 5 5 5 5
VRATE KT-FT/1K..3 7 15 26 31 29 32 39 22 13 2 2
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (45-55 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (40-50 PERCENT).
TEMPERATURE.........MIN 60.
RH..................MAX 90 PERCENT.
EYE LEVEL WINDS.....VERY LIGHT AND VARIABLE USING AN ADJUSTMENT FACTOR OF 0.4.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......MIN 400 FT AGL.
TRANSPORT WINDS.....WEST AROUND 5 MPH SHIFTING TO THE SOUTHEAST
LATE IN THE EVENING, THEN SHIFTING TO THE WEST
3 TO 5 MPH OVERNIGHT.
SMOKE DISPERSAL.....POOR (200 M/S-M).
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
TEMPERATURE.........MAX 90.
RH..................MIN 38 PERCENT.
EYE LEVEL WINDS.....VERY LIGHT AND VARIABLE USING AN ADJUSTMENT FACTOR OF 0.4.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......MAX 6600 FT AGL.
TRANSPORT WINDS.....NORTHWEST 3 TO 5 MPH SHIFTING TO THE NORTH
AROUND 5 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (200 M/S-M).
FORECASTER...GOSSELIN
REQUESTED BY...MATTHEW PETER
TYPE OF REQUEST...PRESCRIBED
.TAG 2521708.0/LSX
.DELDT 09/10/25
.FORMATTERVERSION 2.0.0
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