922
FNUS73 KLSX 211458
FWSLSX
SPOT FORECAST FOR PENALTY BOX...ST. LOUIS COUNTY PARKS FORESTRY
NATIONAL WEATHER SERVICE SAINT LOUIS MO
858 AM CST WED JAN 21 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 CST ON JANUARY 21.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE.
DISCUSSION
TEMPERATURES ARE FORECASTED TO REACH THE MID 40S WITH MINIMUM
RELATIVE HUMIDITY VALUES REACHING 35-40 PERCENT THIS AFTERNOON
UNDER A MOSTLY SUNNY SKY. WEST-SOUTHWESTERLY WINDS AROUND 5-10KTS
WILL PERSIST UNTIL LATER THIS EVENING UNTIL A COLD FRONT BRINGS A WIND
SHIFT TO THE NORTHWEST HAPPENS AROUND MIDNIGHT.
REST OF TODAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
TEMPERATURE.........38 AT IGNITION...MAX 46.
RH..................50 PERCENT AT IGNITION...MIN 38 PERCENT.
EYE LEVEL WINDS.....WINDS WEST AT 5 MPH OR LESS AT IGNITION...OTHERWISE
WEST WINDS AROUND 5 MPH. GUSTS UP TO 10 MPH IN
THE LATE MORNING AND AFTERNOON. ADJUSTMENT
FACTOR OF 0.4 USED.
WIND (20 FT)........WINDS WEST AT 9 MPH AT IGNITION...OTHERWISE
WEST WINDS 8 TO 11 MPH. GUSTS UP TO 23 MPH IN
THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......1400 FT AGL AT IGNITION...OTHERWISE MAX 3600 FT
AGL.
TRANSPORT WINDS.....WEST 14 TO 23 MPH.
SMOKE DISPERSAL.....POOR /3570 M/S-M/ AT IGNITION. MAX...GOOD
/11470 M/S-M/.
TIME (CST) 9 AM 11 AM 1 PM 3 PM 5 PM 7 PM
SKY (%).........8 9 10 3 8 3
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
TEMP............38 43 45 45 43 38
RH..............50 43 41 38 39 48
20 FT WIND......W 9 W 11 W 11 W 11 W 8 W 7
20 FT WIND GUST.16 18 20 19 17 15
EYE LEVEL WIND..W 4 W 5 W 5 W 5 W 4 W 3
EYE LVL WND GST.7 8 9 9 8 7
MIX HGT (KFT)...1.4 2.7 3.5 3.2 0.9 0.7
TRANSPORT WIND..W 18 W 17 W 22 W 21 W 14 W 15
VRATE KT-FT/1K..23 41 67 57 11 9
VENTRATE CAT....POOR FAIR GOOD FAIR POOR POOR
FORECASTER...PEINE/ELMORE
REQUESTED BY...JASON PRATTE
TYPE OF REQUEST...PRESCRIBED
.TAG 2600766.0/LSX
.DELDT 01/21/26
.FORMATTERVERSION 2.0.0
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