339
FNUS73 KLSX 121130
FWSLSX

Spot Forecast for Runge Nature Center...MDC
National Weather Service Saint Louis MO
530 AM CST Thu Feb 12 2026

Forecast is based on ignition time of 0800 CST on February 12.
If conditions become unrepresentative, contact the
National Weather Service.

.DISCUSSION...
Early this morning surface winds will be light out of the
southeast slowly increasing in magnitude after sunrise until the
late evening when they become lighter again. High temperatures
this afternoon will be in the upper 50s with minimum relative
humidity values reaching the low 30s or even upper 20s for a brief
period this afternoon. Winds will be light and southeasterly
tonight and into Friday with clouds expected to exit the area to
the east late this evening and overnight.

.REST OF TODAY...

Sky/weather.........Partly sunny (50-60 percent).
CWR.................0 percent.
Temperature.........37 at ignition...Max 57.
RH..................61 percent at ignition...Min 31 percent.
Eye level winds.....Winds southeast at 5 mph or less at
                    ignition...otherwise Light winds becoming south
                    5 mph in the late morning and afternoon.
Adjustment factor of 0.4 used.
Wind (20 ft)........Winds southeast at 5 mph at
                    ignition...otherwise Light winds becoming south
                    5 to 8 mph in the late morning and afternoon.
Mixing height.......600 ft AGL at ignition...otherwise max 3000 ft
                    AGL.
Transport winds.....South 8 to 15 mph.
Smoke dispersal.....Poor /720 m/s-m/ at ignition. Max...marginal
                    /4810 m/s-m/.

TIME (CST)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM
Sky (%).........70  67  64  61  58  53  48  43  43  44  44  39
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............37  39  43  47  51  53  54  56  55  53  52  49
RH..............61  59  51  45  37  35  34  31  32  38  39  44
20 FT wind dir..SE  SE  S   S   S   S   S   S   S   SE  SE  SE
20 FT wind spd..4   6   7   7   8   8   7   7   6   5   5   5
20 FT wind gust.10  11  12  12  13  11  11  10  9   7   8   7
Eye lvl wnd dir.SE  SE  S   S   S   S   S   S   S   SE  SE  SE
Eye lvl wnd spd.2   3   3   3   4   4   3   3   3   2   2   2
Eye lvl wnd gst.5   5   6   6   6   5   5   5   4   3   4   3
Mix hgt (kft)...0.6 0.9 1.3 1.7 2.1 2.5 2.8 3.0 2.2 1.1 0.3 0.4
Transp wind dir.S   S   S   S   S   S   S   S   S   S   SE  SE
Transp wind spd.9   13  15  15  14  14  12  9   8   8   8   9
Vrate kt-ft/1K..5   10  17  23  26  31  28  24  15  7   2   3
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent).
CWR.................0 percent.
Temperature.........Min 33.
RH..................Max 82 percent.
Eye level winds.....Southeast winds around 5 mph or less in
the evening becoming light.
Adjustment factor of 0.4 used.
Wind (20 ft)........Southeast winds around 5 mph in the evening
                    becoming light.
Mixing height.......Min 300 ft AGL.
Transport winds.....South 8 to 10 mph.
Smoke dispersal.....Poor (380 m/s-m).

$$
Forecaster...Peine/Elmore
Requested by...B Webster
Type of request...PRESCRIBED
.TAG 2602461.0/LSX
.DELDT 02/12/26
.FormatterVersion 2.0.0