562
FNUS73 KLSX 241502
FWSLSX

Spot Forecast for Ononclea Fen...Missouri State Parks
National Weather Service Saint Louis MO
902 AM CST Fri Jan 24 2025

Forecast is based on ignition time of 1000 CST on January 24.
If conditions become unrepresentative, contact the
National Weather Service.

.DISCUSSION...
After a cold start, the temperature will warm steadily through the
day with dry conditions continuing. Humidity falls to 30 percent
or lower by the afternoon with a light wind generally out of the
southwest. There is the potential for the temperature to warm a
bit more than forecast, and if that occurs then the humidity will
be even lower. It will be even warmer on Saturday, but with a
little higher humidity.

.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent).
Chance of pcpn......0 percent.
Temperature.........22 at ignition...Max 39.
RH..................49 percent at ignition...Min 27 percent.
Wind (20 ft)........Winds southwest at 3 mph at
                    ignition...otherwise Light winds becoming
                    southwest 5 to 6 mph in the afternoon, then
                    shifting to the south around 5 mph late in the
                    afternoon.
Eye level winds.....Winds southwest at 1 mph at
                    ignition...otherwise Light winds becoming
                    southwest 2 to 3 mph in the afternoon, then
                    shifting to the south around 2 mph late in the
                    afternoon. Adjustment factor used 0.4.
Mixing height.......2500 ft AGL at ignition...otherwise max 3400 ft
                    AGL.
Transport winds.....Southwest 10 to 15 mph shifting to the south
                    around 12 mph late in the afternoon.
Smoke dispersal.....Poor /3570 m/s-m/ at ignition. Max...fair /6850
                    m/s-m/.

TIME (CST)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM
Sky (%).........2   3   3   4   3   2   2   3   4   4   8   7
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............22  27  30  35  38  39  37  34  32  29  29  29
RH..............49  40  34  29  27  27  31  36  41  48  51  53
20 FT wind dir..SW  SW  SW  SW  SW  SW  S   S   S   S   S   S
20 FT wind spd..3   4   5   5   6   6   6   5   5   6   6   6
20 FT wind gust.9   10  10  11  12  12  13  13  13  14  15  16
Eye lvl wnd dir.SW  SW  SW  SW  SW  SW  S   S   S   S   S   S
Eye lvl wnd spd.1   2   2   2   3   3   3   2   2   3   3   3
Eye lvl wnd gst.4   5   5   5   6   6   6   6   6   6   7   7
Mix hgt (kft)...2.5 2.6 2.9 3.0 3.1 3.4 2.9 0.9 0.7 0.7 0.8 0.9
Transp wind dir.W   W   SW  SW  SW  SW  S   S   S   S   S   S
Transp wind spd.10  10  13  13  13  15  15  12  13  13  15  15
Vrate kt-ft/1K..23  24  31  33  34  44  37  9   8   8   11  12
Ventrate Cat....PR  PR  PR  PR  PR  FR  PR  PR  PR  PR  PR  PR

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
Chance of pcpn......0 percent.
Temperature.........Min 26.
RH..................Max 81 percent.
Wind (20 ft)........South winds 5 to 6 mph in the evening and
                    overnight becoming light.
Eye level winds.....South winds 2 to 3 mph in the evening and
                    overnight becoming light. Adjustment factor
                    used 0.4.
Mixing height.......Min 700 ft AGL.
Transport winds.....South 10 to 15 mph.
Smoke dispersal.....Poor (960 m/s-m).

.SATURDAY...

Sky/weather.........Mostly sunny (35-45 percent).
Chance of pcpn......0 percent.
Temperature.........Max 50.
RH..................Min 39 percent.
Wind (20 ft)........Light winds becoming southwest 5 to 7 mph in
                    the late morning and afternoon, then becoming
                    light late in the afternoon.
Eye level winds.....Light winds becoming southwest 2 to 3 mph in
                    the late morning and afternoon, then becoming
                    light late in the afternoon. Adjustment factor
                    used 0.4.
Mixing height.......Max 3600 ft AGL.
Transport winds.....Southwest 12 to 20 mph shifting to the west 9
                    to 13 mph late in the afternoon.
Smoke dispersal.....Poor (1070 m/s-m) early in the morning
                    increasing to good max (8310 m/s-m) in the
                    afternoon.

$$
Forecaster...Byrd
Requested by...Burn Boss/Resource Ecologist
Type of request...PRESCRIBED
.TAG 2501193.1/LSX
.DELDT 01/24/25
.FormatterVersion 2.0.0