644
FNUS73 KLSX 201259
FWSLSX
SPOT FORECAST FOR FORT HILL GLADE...MO DNR-STATE PARKS
NATIONAL WEATHER SERVICE SAINT LOUIS MO
659 AM CST TUE JAN 20 2026
FORECAST IS BASED ON IGNITION TIME OF 1100 CST ON JANUARY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE.
DISCUSSION
HIGH TEMPERATURES WILL BE JUST ABOVE NORMAL TODAY WITH MINIMUM RELATIVE
HUMIDITY VALUES BETWEEN AROUND 35 PERCENT. MIXING HEIGHTS WILL CLIMB ABOVE
1700 FEET AROUND 11 AM, WITH THE MAXIMUM MIXING HEIGHT AROUND 3300 FEET
THIS AFTERNOON RESULTING IN GOOD SMOKE DISPERSAL. WINDS WILL BE OUT OF
THE SOUTH DURING THE DAY TODAY AT 7 MPH OR LESS.
DRY WEATHER IS EXPECTED THROUGH WEDNESDAY WITH TEMPERATURES STAYING NEAR
OR JUST ABOVE NORMAL. A COLD FRONT WILL MOVE THROUGH THE SITE ON WEDNESDAY
MORNING CAUSING WINDS TO SHIFT OUT OF THE WEST AND BECOMING GUSTY.
MIXING HEIGHTS ARE EXPECTED TO CLIMB TO AROUND TO 3300 FEET WITH GOOD
SMOKE DISPERSION IN THE AFTERNOON WITH MINIMUM RELATIVE HUMIDITY VALUES
AROUND 45 PERCENT.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........29 AT IGNITION...MAX 39.
RH..................39 PERCENT AT IGNITION...MIN 34 PERCENT.
EYE LEVEL WINDS.....WINDS AROUND 2 MPH WITH AN ADJUSTMENT FACTOR OF 0.3
WIND (20 FT)........WINDS SOUTH AT 6 MPH AT IGNITION...OTHERWISE
SOUTH WINDS 6 TO 7 MPH.
MIXING HEIGHT.......2100 FT AGL AT IGNITION...OTHERWISE MAX 3300 FT
AGL.
TRANSPORT WINDS.....SOUTH 14 TO 21 MPH.
SMOKE DISPERSAL.....MARGINAL /4620 M/S-M/ AT IGNITION. MAX...GOOD
/9190 M/S-M/.
TIME (CST) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P
SKY (%).........47 32 17 10 8 9 11 18 20 25 29 33
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............29 33 36 38 39 38 36 32 29 29 28 29
RH..............39 36 35 34 35 37 38 45 46 46 50 48
20 FT WIND DIR..S S S S S S S S S S S S
20 FT WIND SPD..6 7 7 7 7 7 6 6 6 7 7 7
20 FT WIND GUST.12 14 14 15 15 14 14 15 16 17 18 18
EYE LVL WND DIR.S S S S S S S S S S S S
EYE LVL WND SPD.3 3 3 3 3 3 3 3 3 3 3 3
EYE LVL WND GST.6 6 6 7 7 6 6 7 7 8 8 8
MIX HGT (KFT)...2.1 2.5 2.9 3.3 3.2 2.5 0.8 0.8 0.7 0.8 0.9 0.9
TRANSP WIND DIR.S S SW SW S S S S S S S S
TRANSP WIND SPD.16 17 18 21 20 18 14 14 15 15 16 17
VRATE KT-FT/1K..29 38 46 59 54 39 10 10 9 11 13 14
VENTRATE CAT....PR PR FR FR FR PR PR PR PR PR PR PR
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING
MOSTLY CLOUDY (75-85 PERCENT).
CWR.................10 PERCENT.
TEMPERATURE.........MIN 26.
RH..................MAX 85 PERCENT.
EYE LEVEL WINDS.....WINDS AROUND 2 MPH WITH AN ADJUSTMENT FACTOR OF 0.3
WIND (20 FT)........SOUTH WINDS AROUND 6 MPH SHIFTING TO THE
SOUTHWEST AROUND 8 MPH WITH GUSTS TO AROUND 19
MPH AFTER 3 AM.
MIXING HEIGHT.......MIN 700 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 14 TO 18 MPH.
SMOKE DISPERSAL.....POOR (1450 M/S-M).
WEDNESDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING
SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........MAX 47.
RH..................MIN 45 PERCENT.
EYE LEVEL WINDS.....WINDS AROUND 2 MPH WITH AN ADJUSTMENT FACTOR OF 0.3
WIND (20 FT)........WEST WINDS 5 TO 7 MPH WITH GUSTS TO AROUND 17
MPH IN THE MORNING AND EARLY AFTERNOON BECOMING
LIGHT.
MIXING HEIGHT.......MAX 3300 FT AGL.
TRANSPORT WINDS.....WEST 15 TO 23 MPH.
SMOKE DISPERSAL.....POOR (2250 M/S-M) EARLY IN THE MORNING
INCREASING TO GOOD MAX (10040 M/S-M) IN THE
AFTERNOON.
FORECASTER...BRITT
REQUESTED BY...FRANNY STOCKTON
TYPE OF REQUEST...PRESCRIBED
.TAG 2600597.0/LSX
.DELDT 01/20/26
.FORMATTERVERSION 2.0.0
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