270
FNUS73 KLSX 242355
FWSLSX
SPOT FORECAST FOR MEINHART...IL DNR
NATIONAL WEATHER SERVICE SAINT LOUIS MO
655 PM CDT TUE MAR 24 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 CDT ON MARCH 25.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE.
DISCUSSION
WEDNESDAY WILL HAVE A HIGH TEMPERATURE IN THE LOW TO MID-70S
WITH FEW TO SCATTERED DAYTIME CLOUDS FROM LATE MORNING THROUGH
THE AFTERNOON. MAY SEE GUSTS FROM THE SOUTHWEST UP TO 20 MPH IN
OPEN AREAS IN THE AFTERNOON. NIGHTTIME INVERSION WILL BE DEEP AT
6AM, AROUND 1400 FEET. ALTHOUGH THE INVERSION WILL WEAKEN THROUGH
THE MORNING, IT DOESN'T FULLY BREAK UNTIL ABOUT 1PM. ABOUT THIS
TIME (1-3PM) IS WHEN RELATIVE HUMIDITY VALUES WILL BE THE LOWEST,
IN THE LOW-40S. IF MIXING IS MORE EFFICIENT THAN FORECAST, THIS
NUMBER MAY DIP INTO THE UPPER 30S. THAT WOULD PUT CONDITIONS JUST
OUTSIDE OF ELEVATED FIRE DANGER.
WEDNESDAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT).
CWR.................2 PERCENT.
CHANCE OF THUNDER...3 PERCENT.
TEMPERATURE.........41 AT IGNITION...MAX 72.
RH..................70 PERCENT AT IGNITION...MIN 41 PERCENT.
EYE LEVEL WINDS.....LIGHT SOUTHEAST WINDS AT IGNITION...
OTHERWISE LIGHT SOUTH WINDS EARLY IN THE
MORNING THROUGH THE AFTERNOON...USING AN
ADJUSTMENT FACTOR OF 0.1.
WIND (20 FT)........WINDS SOUTHEAST AT 3 MPH AT
IGNITION...OTHERWISE SOUTH WINDS 5 TO 10 MPH
EARLY IN THE MORNING BECOMING LIGHT, THEN
BECOMING SOUTH 5 TO 10 MPH IN THE LATE MORNING
AND AFTERNOON.
MIXING HEIGHT.......400 FT AGL AT IGNITION...OTHERWISE MAX 3800 FT
AGL.
TRANSPORT WINDS.....SOUTH 9 TO 17 MPH SHIFTING TO THE SOUTHWEST
AROUND 20 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR /520 M/S-M/ AT IGNITION. MAX...GOOD /10170
M/S-M/.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........36 33 40 36 33 32 27 25 31 34 44 48
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............41 40 43 48 55 60 64 67 70 71 72 72
RH..............70 73 70 60 51 46 43 42 41 41 43 44
20 FT WIND DIR..SE SE S S S S S S S S S S
20 FT WIND SPD..3 3 4 5 5 7 8 9 9 10 10 9
20 FT WIND GUST.8 7 8 9 10 11 12 13 15 15 16 15
EYE LVL WND DIR.SE SE S S S S S S S S S S
EYE LVL WND SPD.1 1 2 2 2 3 4 4 4 5 5 4
EYE LVL WND GST.4 3 4 4 5 5 6 6 7 7 7 7
MIX HGT (KFT)...0.4 0.4 0.4 0.6 1.1 1.6 2.4 2.9 3.3 3.6 3.8 3.4
TRANSP WIND DIR.SE S S S S S S S S S SW SW
TRANSP WIND SPD.10 9 9 10 12 12 14 16 17 20 20 20
VRATE KT-FT/1K..3 3 3 5 11 16 28 40 49 62 65 58
VENTRATE CAT....PR PR PR PR PR PR PR FR FR GD GD FR
FORECASTER...JAJA
REQUESTED BY...WADE BLOEMER
TYPE OF REQUEST...PRESCRIBED
.TAG 2607686.0/LSX
.DELDT 03/24/26
.FORMATTERVERSION 2.0.0
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