545
FNUS73 KDMX 291440
FWSDMX

Spot Forecast for Little Wall...Iowa DNR
National Weather Service Des Moines IA
940 AM CDT Wed Apr 29 2026

Forecast is based on ignition time of 1000 CDT on April 29.
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 from the northeast at around 10 mph before becoming
from the ENE around noon today. Occasional gusts of up to 20 mph
are possible this afternoon. Relative humidity values are
currently in the low 60% range and will bottom out around 35%
later this afternoon. Increasing cloud cover throughout the day.


.REST OF TODAY...

Sky/weather.........Mostly sunny (35-45 percent).
Max temperature.....Around 60.
Min humidity........39 percent.
Wind (20 ft)........Northwest winds 10 to 12 mph.
Mixing height.......8300 ft AGL.
Transport winds.....Northwest 17 to 20 mph.
Smoke dispersal.....Good (86000 knot-ft) early in the morning
                    increasing to very good (141400 knot-ft) in the
                    afternoon.
GFDI................1.

TIME (CDT)      10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........23  29  49  57  50  52  55  59
Weather cov.....
Weather type....
Tstm cov........
Temp............49  51  52  54  55  57  57  58
RH..............63  57  51  47  45  42  42  39
20 FT wind dir..NW  NW  NW  NW  W   NW  NW  NW
20 FT wind spd..12  12  12  10  12  12  12  12
20 FT wind gust.14  15  14  16  16  16  17  16
Mix hgt (kft)...5.4 6.1 6.7 7.1 7.4 7.8 8.3 7.9
Transp wind dir.N   N   N   NW  NW  NW  NW  NW
Transp wind spd.18  18  17  18  20  20  20  18
GFDI............0   0   0   0   1   1   1   1
Smoke Dispersal.86  98  100 113 125 132 141 126
Smoke Cat.......GD  GD  VGD VGD VGD VGD VGD VGD

.TONIGHT...

Sky/weather.........Mostly cloudy (50-60 percent) then becoming
                    partly cloudy (30-40 percent).
Min temperature.....Around 39.
Max humidity........85 percent.
Wind (20 ft)........Northwest winds 5 to 10 mph in the evening
                    becoming light, then becoming northwest around
                    5 mph after 3 am.
Mixing height.......300 ft AGL.
Transport winds.....Northwest 8 to 16 mph decreasing to 6 to 10 mph
                    in the late evening and overnight.
Smoke dispersal.....Very good (105800 knot-ft) early in the evening
                    decreasing to poor (5900 knot-ft) late in the
                    night decreasing to poor (2000 knot-ft) in the
                    late evening and overnight.
GFDI................1.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........56  48  28  26  37  32  25  18  19  21  25  29
Weather cov.....
Weather type....
Tstm cov........
Temp............59  57  54  50  48  47  45  44  43  42  41  40
RH..............37  42  48  58  65  68  70  76  76  79  82  85
20 FT wind dir..NW  NW  NW  NW  NW  NW  NW  N   N   NW  NW  NW
20 FT wind spd..10  9   7   6   5   5   3   3   3   5   5   5
20 FT wind gust.15  13  9   7   6   6   5   5   6   6       6
Mix hgt (kft)...7.6 3.3 0.8 0.8 0.6 0.4 0.4 0.4 0.3 0.3 0.5 0.5
Transp wind dir.NW  NW  NW  NW  NW  W   N   NW  NW  NW  NW  N
Transp wind spd.16  13  8   6   6   6   8   8   8   10  10  9
GFDI............1   0   0   0   0   0   0   0   0   0   0   0
Smoke Dispersal.106 36  6   4   3   2   3   3   2   3   5   4
Smoke Cat.......VGD PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.THURSDAY...

Sky/weather.........Mostly sunny (40-50 percent).
Max temperature.....Around 57.
Min humidity........38 percent.
Wind (20 ft)........North winds 5 to 14 mph.
Mixing height.......6200 ft AGL.
Transport winds.....North 7 to 16 mph increasing to 17 to 18 mph
                    late in the afternoon.
Smoke dispersal.....Poor (2700 knot-ft) early in the morning
                    increasing to good (99100 knot-ft) in the
                    afternoon.
GFDI................2.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........34  41  59  57  55  56  57  58  56  55  53  51
Weather cov.....
Weather type....
Tstm cov........
Temp............40  39  41  44  47  49  51  52  54  55  55  55
RH..............85  82  79  70  60  56  50  48  43  41  40  38
20 FT wind dir..N   N   N   N   N   N   N   N   N   N   N   N
20 FT wind spd..5   6   6   7   9   10  12  13  14  14  14  14
20 FT wind gust.7   7   8   9   12  14  16  17  18  20  20  20
Mix hgt (kft)...0.4 0.4 1.2 2.1 2.9 3.5 4.0 4.4 5.2 5.8 6.2 6.1
Transp wind dir.N   N   N   N   N   N   N   N   N   N   N   N
Transp wind spd.7   8   9   9   9   10  12  14  16  17  18  18
GFDI............0   0   0   1   1   1   2   2   3   3   3   3
Smoke Dispersal.3   3   10  16  21  29  40  53  71  89  99  98
Smoke Cat.......PR  PR  PR  PR  PR  PR  PR  FR  GD  GD  GD  GD

$$
Forecaster...Rotter/Hagenhoff
Requested by...Jason Carlberg
Type of request...PRESCRIBED
.TAG 2612107.0/DMX
.DELDT 04/29/26
.FormatterVersion 2.0.0
.EMAIL jason.carlberg@dnr.iowa.gov