147
FNUS73 KLSX 101355
FWSLSX
SPOT FORECAST FOR PERE MARQUETTE PRAIRIES...IDNR
NATIONAL WEATHER SERVICE SAINT LOUIS MO
755 AM CST TUE FEB 10 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 CST ON FEBRUARY 10.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE.
DISCUSSION
WHILE GENERALLY WARM, MODERATELY DRY, AND BREEZY CONDITIONS ARE
EXPECTED TODAY, THE PASSAGE OF A COLD FRONT WILL ADD COMPLICATIONS
TO THE HOURLY SPECIFICS. LIGHT AND VARIABLE WINDS ARE EXPECTED TO
BEGIN THE FORECAST PERIOD, BUT THIS COLD FRONT WILL MOVE THROUGH
THE AREA BEGINNING AT ROUGHLY 11 AM, BRINGING WITH IT BREEZY
NORTH - NORTHWEST WINDS. THIS IS LIKELY TO SLOW OUR WARMING THIS
AFTERNOON, AND THE TEMPERATURE / HUMIDITY FORECASTS BELOW REFLECT
THIS TIMING. HOWEVER, SLIGHT DIFFERENCES IN THE TIMING OF THIS
FRONT MAY LEAD TO NON-TRIVIAL CHANGES TO THOSE FORECAST VALUES
(FASTER FRONT = COOLER, SLOWER FRONT = WARMER), SO CLOSE
MONITORING OF OBSERVATIONS IS SUGGESTED. IT'S ALSO POSSIBLE THAT
WE MAY SEE AN HOUR OR TWO WITH HUMIDITY VALUES SLIGHTLY BELOW 40
PERCENT THIS AFTERNOON, ALTHOUGH CONFIDENCE IS LOW THAT IT WILL BE
QUITE THIS DRY.
OTHERWISE, NO PRECIPITATION IS EXPECTED. MIXING HEIGHTS ARE ALSO
EXPECTED TO REMAIN RELATIVELY LOW, BUT THE BREEZY
WINDS SHOULD AT LEAST HELP WITH VENTILATION. WINDS WILL WEAKEN
OVERNIGHT, AND LIGHT NORTH WINDS WILL PERSIST THROUGH TOMORROW
AFTERNOON AS WELL. EXPECT A COOLER BUT SEASONABLE DAY
TOMORROW WITH MODERATE TO LOW HUMIDITY.
NOTE: PLEASE LET US KNOW IF CONDITIONS SIGNIFICANTLY DEVIATE FROM THE
FORECAST BELOW DUE TO THE PASSING COLD FRONT. WE WOULD BE HAPPY
TO SEND AN AMENDED FORECAST IF THIS IS THE CASE.
REST OF TODAY
SKY/WEATHER.........SUNNY (10-20 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........50 AT IGNITION...MAX 57.
RH..................80 PERCENT AT IGNITION...MIN 42 PERCENT.
EYE LEVEL WINDS.....LIGHT SOUTHWEST WINDS BECOMING NORTH
3 TO 5 MPH WITH GUSTS TO 9 MPH FROM ROUGHLY
11 AM ONWARD.
WIND (20 FT)........LIGHT SOUTHWEST WINDS BECOMING NORTH - NORTHWEST
7 TO 10 MPH WITH GUSTS TO 18 MPH FROM ROUGHLY 11 AM ONWARD.
MIXING HEIGHT.......300 FT AGL AT IGNITION...OTHERWISE MAX 2400 FT AGL.
TRANSPORT WINDS.....NORTH 12 TO 20 MPH.
SMOKE DISPERSAL.....POOR /500 M/S-M/ AT IGNITION. MAX...FAIR /6320 M/S-M/.
TIME (CST) 9 AM 11 AM 1 PM 3 PM 5 PM 7 PM
SKY (%).........16 18 9 8 11 30
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0 0 0
TEMP............50 55 56 56 53 47
RH..............80 59 49 42 45 51
20 FT WIND......NW 4 N 9 N 9 N 10 N 9 N 8
20 FT WIND GUST.10 14 15 16 15 15
EYE LEVEL WIND..NW 2 N 4 N 4 N 5 N 4 N 4
EYE LVL WND GST.5 6 7 7 7 7
MIX HGT (KFT)...0.3 1.3 2.0 2.4 0.9 0.4
TRANSPORT WIND..NW 12 N 17 N 20 N 20 N 14 N 14
VRATE KT-FT/1K..3 20 34 40 11 5
VENTRATE CAT....POOR POOR POOR FAIR POOR POOR
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........MIN 29.
RH..................MAX 81 PERCENT.
EYE LEVEL WINDS.....NORTH WINDS 2 TO 4 MPH.
WIND (20 FT)........NORTH WINDS 5 TO 8 MPH.
MIXING HEIGHT.......MIN 300 FT AGL.
TRANSPORT WINDS.....NORTH 10 TO 16 MPH.
SMOKE DISPERSAL.....POOR (600 M/S-M).
WEDNESDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
TEMPERATURE.........MAX 48.
RH..................MIN 40 PERCENT.
EYE LEVEL WINDS.....NORTH WINDS AROUND 1 TO 3 MPH.
WIND (20 FT)........NORTH WINDS AROUND 3 TO 5 MPH.
MIXING HEIGHT.......MAX 2500 FT AGL.
TRANSPORT WINDS.....NORTH 6 TO 13 MPH.
SMOKE DISPERSAL.....POOR (640 M/S-M).
FORECASTER...19
REQUESTED BY...EMMA LAUNER
TYPE OF REQUEST...PRESCRIBED
.TAG 2602295.0/LSX
.DELDT 02/10/26
.FORMATTERVERSION 2.0.0
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