957
FNUS73 KLSX 281234
FWSLSX
SPOT FORECAST FOR CLARENCE CANNON UNIT 7...USFWS
NATIONAL WEATHER SERVICE SAINT LOUIS MO
634 AM CST SAT FEB 28 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 CST ON FEBRUARY 28.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE.
DISCUSSION
TODAY'S WIND AND HUMIDITY FORECAST WILL BE CHALLENGING, AS A LOW
PRESSURE SYSTEM WILL CAUSE WINDS TO SHIFT THROUGHOUT THE BURN
PERIOD. WINDS WILL LIKELY BEGIN THE DAY OUT OF THE EAST, THEN
GRADUALLY SHIFT TO THE SOUTHEAST EARLY IN THE AFTERNOON, AND THEN
SHARPLY TO THE NORTH NEAR SUNSET. WINDS WILL LIKELY BE MODERATELY
BREEZY THROUGHOUT THE BURN PERIOD, WITH OCCASIONAL GUSTS
APPROACHING 15 TO 20 MPH. HUMIDITY IS ALSO EXPECTED TO BE
RELATIVELY LOW, BUT NOT AS LOW AS YESTERDAY. IN SPITE OF THE
LINGERING DRY AIR, A FEW VERY LIGHT SHOWERS OR SPRINKLES MAY REACH
THE SURFACE DURING THE DAY, BUT LIKELY NOT ENOUGH TO ACCUMULATE.
IF RAIN DOES REACH THE SURFACE, HUMIDITY IS LIKELY TO REMAIN
SLIGHTLY HIGHER THAN THE FORECAST BELOW. PERSISTENT CLOUD COVER
WILL ALSO LIMIT MIXING AND INHIBIT SMOKE DISPERSION, WHICH WILL
LIKELY BE CHALLENGING ALREADY DUE TO THE SHIFTING WINDS.
AFTER WINDS SWITCH TO THE NORTH THIS EVENING, THEY WILL REMAIN
NORTHERLY THROUGH THE NIGHT AND GRADUALLY BECOME NORTHEASTERLY
TOMORROW MORNING. MUCH COOLER TEMPERATURES ARE EXPECTED TOMORROW
ALONG WITH PERSISTENT BREEZY NORTHEAST WINDS, BUT HUMIDITY WILL
AGAIN BE RELATIVELY LOW DURING THE DAY UNTIL LIGHT ACCUMULATING
SNOW ARRIVES OVERNIGHT SUNDAY.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT). SLIGHT CHANCE OF
RAIN LATE IN THE MORNING.
CWR.................4 PERCENT.
CHANCE OF THUNDER...6 PERCENT.
TEMPERATURE.........49 AT IGNITION...MAX 61.
RH..................41 PERCENT AT IGNITION...MIN 34 PERCENT.
EYE LEVEL WINDS.....WINDS EAST AT 2 TO 5 MPH AT IGNITION WITH GUSTS TO 9 MPH.
WINDS GRADUALLY SHIFT TO SOUTHEAST BY 1 PM WITH SIMILAR SPEEDS.
WIND (20 FT)........WINDS EAST AT 5 TO 10 MPH AT IGNITION WITH GUSTS TO 17 MPH.
WINDS GRADUALLY SHIFT TO SOUTHEAST BY 1 PM WITH SIMILAR SPEEDS.
MIXING HEIGHT.......1700 FT AGL AT IGNITION...OTHERWISE MAX 2400 FT
AGL.
TRANSPORT WINDS.....SOUTHEAST 12 TO 15 MPH SHIFTING TO THE EAST
AROUND 5 MPH.
SMOKE DISPERSAL.....POOR /3110 M/S-M/ AT IGNITION. MAX...MARGINAL
/4710 M/S-M/.
TIME (CST) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM
SKY (%).........36 37 45 43 46 46 55 59 55 53 45 35
WEATHER COV..... SCH SCH SCH SCH SCH
WEATHER TYPE.... RN RN RN RN RN
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).10 10 10 10 10 10 10 10 0 0 0 0
TEMP............49 52 55 58 59 60 61 60 56 52 49 46
RH..............41 37 34 34 34 37 38 40 48 51 49 48
20 FT WIND DIR..E E E SE SE SE SE E N N N N
20 FT WIND SPD..7 8 8 9 8 8 6 4 5 5 7 8
20 FT WIND GUST.13 15 16 17 16 12 10 7 8 9 12 14
EYE LVL WND DIR.E E E SE SE SE SE E N N N N
EYE LVL WND SPD.3 4 4 4 4 4 3 2 2 2 3 4
EYE LVL WND GST.6 6 6 6 6 6 5 3 4 4 6 6
MIX HGT (KFT)...1.7 2.0 2.3 2.3 2.4 2.3 1.9 1.0 0.4 0.6 0.8 1.0
TRANSP WIND DIR.E SE SE S S S S E NE NE N N
TRANSP WIND SPD.14 12 13 15 14 13 10 5 6 8 12 14
VRATE KT-FT/1K..20 20 25 30 29 26 17 4 2 4 8 12
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (20-30 PERCENT).
CWR.................2 PERCENT.
CHANCE OF THUNDER...3 PERCENT.
TEMPERATURE.........MIN 26.
RH..................MAX 78 PERCENT.
EYE LEVEL WINDS.....SHIFTING SHARPLY TO NORTH BY 6 PM, SPEEDS 2 TO 5 MPH.
THESE WINDS CONTINUE THROUGH THE NIGHT.
WIND (20 FT)........SHIFTING SHARPLY TO NORTH BY 6 PM, SPEEDS 5 TO 10 MPH.
THESE WINDS CONTINUE THROUGH THE NIGHT.
MIXING HEIGHT.......MIN 400 FT AGL.
TRANSPORT WINDS.....NORTH 6 TO 14 MPH INCREASING TO 15 TO 17 MPH IN
THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....POOR (330 M/S-M).
SUNDAY
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT) THEN BECOMING
CLOUDY (85-95 PERCENT). SLIGHT CHANCE OF SNOW
IN THE AFTERNOON.
CWR.................6 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
TEMPERATURE.........MAX 42.
RH..................MIN 43 PERCENT.
EYE LEVEL WINDS.....NORTHEAST WINDS 2 TO 5 MPH.
WIND (20 FT)........NORTHEAST WINDS 5 TO 10 MPH.
MIXING HEIGHT.......MAX 2900 FT AGL.
TRANSPORT WINDS.....NORTHEAST 14 TO 20 MPH.
SMOKE DISPERSAL.....POOR (3410 M/S-M) EARLY IN THE MORNING
INCREASING TO FAIR MAX (6000 M/S-M) IN THE
AFTERNOON.
FORECASTER...19
REQUESTED BY...CHRIS WOODSON
TYPE OF REQUEST...PRESCRIBED
.TAG 2604265.1/LSX
.DELDT 02/28/26
.FORMATTERVERSION 2.0.0
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