762
FNUS73 KLSX 211150
FWSLSX

Spot Forecast for Whitlock RX Burn...PFQF/NRCS
National Weather Service Saint Louis MO
550 AM CST Sat Feb 21 2026

Forecast is based on ignition time of 1000 CST on February 21.
If conditions become unrepresentative, contact the
National Weather Service.

.DISCUSSION...
It will be partly sunny today will a chance of flurries this morning.
After an early morning low around 30, high temperatures this
afternoon will climb to around 40 degrees.  Mixing heights are not
expected to climb above 1700 feet until 10 am with maximum mixing
heights around 3200 feet this afternoon.  Northerly winds will
provide for good smoke dispersion this afternoon.   The minimum
relative humidity is expected to stay above 40 percent today.

No precipitation is expected on Sunday with a morning low around 20
and an afternoon high around 35.  The minimum relative humidity
is expected to stay above 40 percent with mixing heights
climbing to around 4500 feet.  Northwest winds will be slightly
stronger and gusty on Sunday leading to excellent smoke dispersal
during the afternoon.

.REST OF TODAY...

Sky/weather.........Partly sunny (65-75 percent). Chance of
                    flurries late in the morning.
CWR.................10 percent.
Chance of thunder...1 percent.
Temperature.........29 at ignition...Max 38.
RH..................62 percent at ignition...Min 44 percent.
Eye level winds.....Winds around 5 mph with an adjustment factor of 0.4
Wind (20 ft)........Winds northwest at 8 mph at
                    ignition...otherwise Northwest winds 8 to 12
                    mph.
Mixing height.......2000 ft AGL at ignition...otherwise max 3700 ft
                    AGL.
Transport winds.....Northwest 14 to 21 mph.
Smoke dispersal.....Poor /3760 m/s-m/ at ignition. Max...good
                    /10400 m/s-m/.

TIME (CST)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM
Sky (%).........85  86  85  71  60  55  53  52  49  36  23  16
Weather cov.....CHC CHC CHC
Weather type....SW  SW  SW
Tstm cov........
CWR.............10  10  10  10  0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............29  31  34  35  37  38  37  36  35  32  30  29
RH..............62  57  51  51  45  44  45  45  50  53  55  55
20 FT wind dir..NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..8   9   9   10  11  12  11  10  9   9   9   10
20 FT wind gust.13  12  13  14  15  16  15  15  14  15  15  17
Eye lvl wnd dir.NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Eye lvl wnd spd.4   4   4   5   5   6   5   5   4   4   4   5
Eye lvl wnd gst.6   6   6   6   7   7   7   7   6   7   7   8
Mix hgt (kft)...2.0 2.3 2.6 3.0 3.4 3.7 3.7 3.1 1.0 1.3 1.5 1.6
Transp wind dir.NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.14  15  15  16  17  20  21  20  15  16  17  17
Vrate kt-ft/1K..24  30  33  42  51  63  66  53  13  18  23  24
Ventrate Cat....PR  PR  PR  FR  FR  GD  GD  FR  PR  PR  PR  PR

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Temperature.........Min 19.
RH..................Max 65 percent.
Eye level winds.....Winds around 6 mph with an adjustment factor of 0.4
Wind (20 ft)........Northwest winds 9 to 15 mph.
Mixing height.......Min 1000 ft AGL.
Transport winds.....Northwest 15 to 24 mph increasing to 25 to 28
                    mph after 3 am.
Smoke dispersal.....Good (9300 m/s-m) early in the evening
                    decreasing to poor min (1980 m/s-m) late in the
                    night.

.SUNDAY...

Sky/weather.........Mostly sunny (30-40 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Temperature.........Max 30.
RH..................Min 41 percent.
Eye level winds.....Winds around 5 mph with an adjustment factor of 0.4
Wind (20 ft)........Northwest winds 15 to 19 mph with gusts to
                    around 26 mph.
Mixing height.......Max 4500 ft AGL.
Transport winds.....Northwest 23 to 31 mph.
Smoke dispersal.....Good (9570 m/s-m) early in the morning
                    increasing to excellent max (18230 m/s-m) in
                    the afternoon.

$$
Forecaster...Britt
Requested by...Shel Wilks
Type of request...PRESCRIBED
.TAG 2603364.0/LSX
.DELDT 02/21/26
.FormatterVersion 2.0.0