424
FNUS73 KDMX 111538
FWSDMX

Spot Forecast for Hammer Unit Big Oak...Dallas county Consevation
National Weather Service Des Moines IA
938 AM CST Wed Feb 11 2026

Forecast is based on ignition time of 1000 CST on February 11.
If conditions become unrepresentative...contact the National Weather
Service.

An initial observation at ignition and a mid burn observation are required.

Please relay them to the National Weather Service for each prescribed burn.

.DISCUSSION...

Winds will be light today from the southwest from ignition time
through the rest of the afternoon before becoming from the south
this evening. Afternoon relative humidity will fall to around 35%
and mixing depth will grow to around at least 3500 feet.


.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 51.
Min humidity........34 percent.
Wind (20 ft)........Light winds becoming southwest 5 to 6 mph late
                    in the morning, then becoming light late in the
                    afternoon.
Mixing height.......3400 ft AGL.
Transport winds.....West 6 to 7 mph shifting to the southwest 5 to
                    6 mph late in the afternoon.
Smoke dispersal.....Poor (4200 knot-ft) early in the morning
                    increasing to fair (20300 knot-ft) in the
                    afternoon.

TIME (CST)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........4   7   6   5   5   6   9   14
Weather cov.....
Weather type....
Tstm cov........
Temp............37  42  44  47  49  51  51  49
RH..............59  50  47  42  39  36  34  37
20 FT wind dir..W   W   SW  SW  W   W   SW  SW
20 FT wind spd..3   5   6   6   6   6   5   3
20 FT wind gust.    6   7   8   8   8   7   6
Mix hgt (kft)...1.0 1.7 2.4 2.8 3.1 3.4 2.5 1.0
Transp wind dir.NW  NW  NW  W   W   W   W   SW
Transp wind spd.7   6   7   6   7   7   6   5
Smoke Dispersal.6   8   13  13  18  20  12  4
Smoke Cat.......PR  PR  PR  PR  PR  PR  PR  PR

$$
Forecaster...Ansorge
Requested by...Bob Myers
Type of request...PRESCRIBED
.TAG 2602448.0/DMX
.DELDT 02/11/26
.FormatterVersion 2.0.0
.EMAIL bob.myers@dallascountyiowa.gov