919
FNUS73 KLSX 222144
FWSLSX
SPOT FORECAST FOR BIG SUGAR CREEK GLADE RX UNIT...MO DNR
NATIONAL WEATHER SERVICE SAINT LOUIS MO
444 PM CDT WED OCT 22 2025
FORECAST IS BASED ON IGNITION TIME OF 0000 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.
REST OF TONIGHT
SKY/WEATHER.........CLEAR (0-10 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TEMPERATURE.........45 AT IGNITION...MIN 37.
RH..................65 PERCENT AT IGNITION...MAX 79 PERCENT.
EYE LEVEL WINDS.....WINDS NORTHWEST AT 1 TO 2 MPH AT IGNITION...
OTHERWISE LIGHT WINDS.
WIND (20 FT)........WINDS NORTHWEST AT 4 MPH AT
IGNITION...OTHERWISE LIGHT WINDS.
MIXING HEIGHT.......400 FT AGL AT IGNITION...OTHERWISE 400 FT AGL.
TRANSPORT WINDS.....NORTH 6 TO 7 MPH.
SMOKE DISPERSAL.....POOR /390 M/S-M/ AT IGNITION. MIN...POOR /310
M/S-M/.
TIME (CDT) MID 1AM 2AM 3AM 4AM 5AM 6AM 7AM 8AM 9AM 10A 11A
SKY (%).........7 5 4 3 4 4 3 3 2 1 1 1
WEATHER COV..... ARS
WEATHER TYPE.... FST
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............45 44 43 41 40 39 38 37 40 45 50 54
RH..............65 68 67 70 73 73 76 79 73 65 56 48
20 FT WIND DIR..NW N N N N N NW NW NW NW NW NW
20 FT WIND SPD..4 4 4 4 3 3 3 3 2 2 3 3
20 FT WIND GUST.6 7 6 6 6 5 5 5 6 6 7 8
EYE LVL WND DIR.NW N N N N N NW NW NW NW NW NW
EYE LVL WND SPD.2 2 2 2 1 1 1 1 1 1 1 1
EYE LVL WND GST.3 3 3 3 3 2 2 2 3 3 3 4
MIX HGT (KFT)...0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.6 1.3 2.3
TRANSP WIND DIR.N N N N N N N NW NW NW NW NW
TRANSP WIND SPD.7 7 7 7 7 6 7 5 5 5 6 8
VRATE KT-FT/1K..3 2 2 2 3 2 2 2 2 2 6 16
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
THURSDAY
SKY/WEATHER.........SUNNY (0-5 PERCENT). AREAS OF FROST EARLY IN
THE MORNING.
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
TEMPERATURE.........MAX 63.
RH..................MIN 34 PERCENT.
EYE LEVEL WINDS.....LIGHT WINDS BECOMING NORTHWEST 2 TO 3 MPH LATE
IN THE AFTERNOON, THEN BECOMING LIGHT.
WIND (20 FT)........LIGHT WINDS BECOMING NORTHWEST 5 TO 6 MPH LATE
IN THE AFTERNOON, THEN BECOMING LIGHT LATE IN
THE AFTERNOON.
MIXING HEIGHT.......MAX 4800 FT AGL.
TRANSPORT WINDS.....NORTHWEST 5 TO 13 MPH.
SMOKE DISPERSAL.....POOR (240 M/S-M) EARLY IN THE MORNING
INCREASING TO GOOD MAX (8230 M/S-M) IN THE
AFTERNOON.
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 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 (55-65 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 2524266.0/LSX
.DELDT 10/22/25
.FORMATTERVERSION 2.0.0
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