391
FNUS73 KLSX 201631
FWSLSX
SPOT FORECAST FOR BLUEBELL SCHOOL UNIT...MO DNR-STATE PARKS
NATIONAL WEATHER SERVICE SAINT LOUIS MO
1031 AM CST FRI FEB 20 2026
FORECAST IS BASED ON IGNITION TIME OF 1200 CST ON FEBRUARY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE.
DISCUSSION
TODAY WILL FEATURE PLENTY OF SUNSHINE WITH MIXING HEIGHTS FROM
IGNITION TO 3PM EXPECTED TO BE NEAR 3KFT BEFORE DECREASING
QUICKLY TO 500FT AFTER SUNSET THIS EVENING. CLOUD COVER IS
FORECASTED TO INCREASE THIS EVENING FROM THE SOUTHWEST AHEAD OF AN
APPROACHING WEATHER SYSTEM FROM THE WEST. CHANCES FOR VERY LIGHT
RAIN SHOWERS REMAIN AROUND 15% WITH THIS SYSTEM, PEAKING FOR A FEW
BRIEF HOURS AROUND SUNRISE ON SATURDAY. OTHERWISE, CONDITIONS ARE
EXPECTED TO REMAIN DRY WITH MIXING HEIGHTS FORECASTED TO REACH
AROUND 3KFT FOR A FEW HOURS SATURDAY AFTERNOON UNDER SOME
LINGERING CLOUD COVER.
SURFACE WINDS WILL BE WESTERLY TODAY BECOMING LIGHT AND
NORTHERLY OVERNIGHT. NORTHERLY SURFACE WINDS WILL GRADUALLY
INCREASE IN SPEED ON SATURDAY WITH WINDS OUT OF THE NORTHWEST BY
THE EVENING ON SATURDAY. HIGHS THIS AFTERNOON WILL BE IN THE MID
40S WITH MINIMUM RELATIVE HUMIDITY VALUES AROUND 35 PERCENT FOR
A FEW HOURS THIS AFTERNOON. SATURDAY MORNING TEMPERATURES WILL
START OFF IN THE UPPER 20S EVENTUALLY WARMING INTO THE LOWER 40S
BY THE AFTERNOON. RELATIVE HUMIDITY VALUES WILL BE SLIGHTLY HIGHER
TOMORROW, LOWERING INTO THE LOWER 40S TOMORROW AFTERNOON.
REST OF TODAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........40 AT IGNITION...MAX 45.
RH..................47 PERCENT AT IGNITION...MIN 36 PERCENT.
EYE LEVEL WINDS.....WINDS WEST AT 5 MPH AT IGNITION...OTHERWISE
NORTHWEST WINDS 5 MPH. GUSTS UP TO 8 MPH
IN THE AFTERNOON.
ADJUSTMENT FACTOR OF 0.3 USED.
WIND (20 FT)........WINDS WEST AT 12 MPH AT IGNITION...OTHERWISE
NORTHWEST WINDS 7 TO 12 MPH. GUSTS UP TO 25 MPH
IN THE AFTERNOON.
MIXING HEIGHT.......2700 FT AGL AT IGNITION...OTHERWISE MAX 3000 FT
AGL.
TRANSPORT WINDS.....WEST 16 TO 23 MPH DECREASING TO AROUND 13 MPH
LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....GOOD /8330 M/S-M/ AT IGNITION. MAX...GOOD /8330
M/S-M/.
TIME (CST) NOON 2 PM 4 PM 6 PM 8 PM 10 PM
SKY (%).........2 2 3 11 44 78
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0 10 10
TEMP............40 43 44 41 36 34
RH..............47 41 36 39 47 55
20 FT WIND......W 12 NW 11 NW 8 NW 4 N 4 N 4
20 FT WIND GUST.22 21 17 8 8 9
EYE LEVEL WIND..W 6 NW 5 NW 4 NW 2 N 2 N 2
EYE LVL WND GST.10 10 8 4 4 4
MIX HGT (KFT)...2.7 2.9 2.8 0.3 0.3 0.4
TRANSPORT WIND..W 23 W 20 W 16 NW 7 NW 7 N 7
VRATE KT-FT/1K..53 49 39 2 2 2
VENTRATE CAT....FAIR FAIR POOR POOR POOR POOR
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) THEN BECOMING
MOSTLY CLOUDY (70-80 PERCENT). SLIGHT CHANCE OF
RAIN AND SNOW OVERNIGHT.
CWR.................10 PERCENT INCREASING TO 20 PERCENT OVERNIGHT.
TEMPERATURE.........MIN 28.
RH..................MAX 73 PERCENT.
EYE LEVEL WINDS.....NORTH WINDS AROUND 5 MPH OR LESS EARLY IN THE
EVENING BECOMING LIGHT AND VARIABLE OVERNIGHT.
ADJUSTMENT FACTOR OF 0.3 USED.
WIND (20 FT)........NORTH WINDS AROUND 5 MPH EARLY IN THE EVENING
BECOMING LIGHT, THEN BECOMING NORTH AROUND 5
MPH OVERNIGHT.
MIXING HEIGHT.......MIN 300 FT AGL.
TRANSPORT WINDS.....NORTH 6 TO 9 MPH.
SMOKE DISPERSAL.....POOR (270 M/S-M).
SATURDAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). SLIGHT CHANCE OF
SNOW EARLY IN THE MORNING.
CWR.................20 PERCENT DECREASING TO 10 PERCENT IN THE LATE
MORNING AND AFTERNOON.
TEMPERATURE.........MAX 44.
RH..................MIN 40 PERCENT.
EYE LEVEL WINDS.....NORTHWEST WINDS 5 MPH OR LESS.
ADJUSTMENT FACTOR OF 0.3 USED.
WIND (20 FT)........NORTHWEST WINDS 5 TO 7 MPH.
MIXING HEIGHT.......MAX 3300 FT AGL.
TRANSPORT WINDS.....NORTH 10 TO 18 MPH.
SMOKE DISPERSAL.....POOR (1450 M/S-M) EARLY IN THE MORNING
INCREASING TO GOOD MAX (8310 M/S-M) IN THE
AFTERNOON.
FORECASTER...PEINE/MAPLES
REQUESTED BY...FRANNY STOCKTON
TYPE OF REQUEST...PRESCRIBED
.TAG 2603317.0/LSX
.DELDT 02/20/26
.FORMATTERVERSION 2.0.0
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