590
FNUS73 KLSX 230125
FWSLSX
SPOT FORECAST FOR BIG SUGAR CREEK GLADE RX UNIT...MO DNR
NATIONAL WEATHER SERVICE SAINT LOUIS MO
825 PM CDT WED OCT 22 2025
FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON OCTOBER 23.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE.
DISCUSSION
THURSDAY'S MORNING INVERSION IS EXPECTED TO BREAK BETWEEN 10 AM AND 11 AM.
SURFACE WINDS WILL NOT BECOME GUSTY, RATHER THEY WILL PEAK AT ABOUT 5 MPH
FROM THE NORTHWEST DURING THE AFTERNOON HOURS. RELATIVE HUMIDITY VALUES
WILL ONLY DROP INTO THE MID-30S TOMORROW. WINDS WILL BECOME NEAR CALM OVERNIGHT
BEFORE SWITCHING TO SOUTHEASTERLY BY FRIDAY MORNING. AGAIN, WIND SPEEDS WILL
REMAIN BELOW 5 MPH. RELATIVE HUMIDITY VALUES WILL REMAIN IN THE 40S ON FRIDAY.
BY FRIDAY AFTERNOON, YOUR LOCATION WILL HAVE A 15 TO 20% CHANCE OF SHOWERS. THIS
PROBABILITY WILL INCREASE THROUGH THE AFTERNOON.
THURSDAY
SKY/WEATHER.........SUNNY (0-5 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TEMPERATURE.........54 AT IGNITION...MAX 63.
RH..................48 PERCENT AT IGNITION...MIN 34 PERCENT.
EYE LEVEL WINDS.....LIGHT NORTHWEST WINDS AT IGNITION.
WIND (20 FT)........WINDS NORTHWEST AT 3 MPH AT
IGNITION...OTHERWISE LIGHT WINDS BECOMING
NORTHWEST AROUND 5 MPH EARLY IN THE AFTERNOON,
THEN BECOMING LIGHT LATE IN THE AFTERNOON.
MIXING HEIGHT.......2300 FT AGL AT IGNITION...OTHERWISE MAX 4800 FT
AGL.
TRANSPORT WINDS.....NORTHWEST 8 TO 13 MPH.
SMOKE DISPERSAL.....POOR /2510 M/S-M/ AT IGNITION. MAX...GOOD /8230
M/S-M/.
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P
SKY (%).........2 2 2 3 1 1 1 1 4 2 3 3
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............54 57 60 61 62 63 61 59 56 50 48 47
RH..............48 43 39 38 36 34 36 40 43 54 58 60
20 FT WIND DIR..NW NW NW NW NW NW NW NW NW NW N N
20 FT WIND SPD..3 4 5 5 5 4 3 2 1 1 1 1
20 FT WIND GUST.8 9 10 10 10 9 8 6 4 4 3 3
EYE LVL WND DIR.NW NW NW NW NW NW NW NW NW NW N N
EYE LVL WND SPD.1 2 2 2 2 2 1 1 0 0 0 0
EYE LVL WND GST.4 4 5 5 5 4 4 3 2 2 1 1
MIX HGT (KFT)...2.3 3.5 4.8 4.8 4.7 4.7 3.3 1.8 0.3 0.4 0.4 0.3
TRANSP WIND DIR.NW NW NW NW NW NW NW NW NW N N N
TRANSP WIND SPD.8 10 12 13 13 12 10 8 7 5 3 3
VRATE KT-FT/1K..16 32 48 52 52 47 29 13 2 2 1 1
VENTRATE CAT....PR PR FR FR FR FR PR PR PR PR PR PR
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TEMPERATURE.........MIN 38.
RH..................MAX 82 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS.
WIND (20 FT)........LIGHT WINDS.
MIXING HEIGHT.......MIN 300 FT AGL.
TRANSPORT WINDS.....NORTH 3 TO 8 MPH SHIFTING TO THE NORTHEAST 3 TO
7 MPH LATE IN THE EVENING.
SMOKE DISPERSAL.....POOR (140 M/S-M).
FRIDAY
SKY/WEATHER.........PARTLY SUNNY (65-75 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS IN THE AFTERNOON.
CWR.................10 PERCENT INCREASING TO 20 PERCENT IN THE
AFTERNOON.
CHANCE OF THUNDER...1 PERCENT.
TEMPERATURE.........MAX 60.
RH..................MIN 47 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTHEAST AROUND 2 MPH
LATE IN THE AFTERNOON.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST AROUND 5 MPH
LATE IN THE AFTERNOON, THEN BECOMING LIGHT LATE
IN THE AFTERNOON.
MIXING HEIGHT.......MAX 3300 FT AGL.
TRANSPORT WINDS.....EAST 7 TO 9 MPH SHIFTING TO THE SOUTHEAST 7 TO
8 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (280 M/S-M).
FORECASTER...JAJA
REQUESTED BY...CARRIE STEPHEN, NATURAL RESOURCE ECOLOGIST
TYPE OF REQUEST...PRESCRIBED
.TAG 2524295.0/LSX
.DELDT 10/22/25
.FORMATTERVERSION 2.0.0
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