444
FNUS73 KDMX 041634
FWSDMX

Spot Forecast for Hawthorn Brush Piles...Iowa Department of Natural Resources
National Weather Service Des Moines IA
1034 AM CST Thu Dec 4 2025

Forecast is based on ignition time of 1100 CST on December 04.
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...

Light and variable winds at ignition time will become from the
south and increase to between 5 and 10 mph into this afternoon.
Afternoon relative humidity will remain high near 70% and no
precipitation is expected today under a mostly sunny sky


.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent).
Max temperature.....Around 12.
Min humidity........69 percent.
Wind (20 ft)........Light winds becoming south 5 to 7 mph in the
                    afternoon.
Mixing height.......1300 ft AGL.
Transport winds.....South 7 to 13 mph.
Smoke dispersal.....Poor (3900 knot-ft) early in the morning
                    increasing to fair (14700 knot-ft) in the
                    afternoon.
GFDI................1.

TIME (CST)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5   4   4   2   3   3   9
Weather cov.....
Weather type....
Tstm cov........
Temp............3   6   8   9   11  9   6
RH..............75  76  72  76  69  72  79
20 FT wind dir..S   S   S   S   S   S   S
20 FT wind spd..3   5   6   6   7   7   7
20 FT wind gust.5   8   9   9   10  12  10
Mix hgt (kft)...1.0 1.0 1.2 1.3 1.3 0.5 0.4
Transp wind dir.S   S   S   S   S   S   S
Transp wind spd.7   9   13  13  13  12  12
GFDI............0   0   1   1   1   1   1
Smoke Dispersal.6   8   14  15  14  5   4
Smoke Cat.......PR  PR  PR  PR  PR  PR  PR

.TONIGHT...

Sky/weather.........Mostly clear (15-25 percent).
Min temperature.....Around 4 above.
Max humidity........91 percent.
Wind (20 ft)........South winds 7 to 9 mph.
Mixing height.......400 ft AGL.
Transport winds.....South 13 to 17 mph.
Smoke dispersal.....Poor (4300 knot-ft).
GFDI................1.

TIME (CST)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........8   6   8   12  18  25  35  37  34  30  25  21
Weather cov.....
Weather type....
Tstm cov........
Temp............5   5   5   6   7   8   9   10  11  11  12  13
RH..............79  79  83  83  83  83  83  83  83  91  87  87
20 FT wind dir..S   S   S   S   S   S   S   S   S   S   S   S
20 FT wind spd..7   7   7   8   8   8   9   8   9   9   8   8
20 FT wind gust.10  10  10  13  13  12  14  14  14  14  13  12
Mix hgt (kft)...0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.5 0.5
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.13  15  16  17  16  16  16  16  16  16  16  16
GFDI............1   1   1   1   1   1   1   1   1   1   1   1
Smoke Dispersal.4   5   6   6   6   6   6   6   6   6   7   7
Smoke Cat.......PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.FRIDAY...

Sky/weather.........Mostly sunny (35-45 percent) then becoming
                    mostly cloudy (70-80 percent).
Max temperature.....Around 31.
Min humidity........78 percent.
Wind (20 ft)........Southwest winds 7 to 9 mph.
Mixing height.......1300 ft AGL.
Transport winds.....Southwest 15 to 22 mph.
Smoke dispersal.....Poor (5800 knot-ft) early in the morning
                    increasing to fair (23100 knot-ft) in the
                    afternoon.
GFDI................2.

TIME (CST)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........16  27  42  30  51  49  46  51  56  61  67  74
Weather cov.....
Weather type....
Tstm cov........
Temp............14  14  15  18  22  26  29  30  31  31  31  30
RH..............88  92  96  92  88  81  78  81  81  85  85  88
20 FT wind dir..S   SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..7   7   7   7   8   8   9   9   9   8   7   7
20 FT wind gust.15  16  16  16  16  16  16  16  15  15  14  13
Mix hgt (kft)...0.4 0.5 0.5 0.7 0.8 1.2 1.2 1.3 1.2 1.2 1.0 0.8
Transp wind dir.S   SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  W
Transp wind spd.15  16  16  20  20  22  21  21  21  20  18  16
GFDI............1   1   1   1   1   1   2   2   1   1   1   1
Smoke Dispersal.6   7   7   12  14  22  22  23  22  20  15  11
Smoke Cat.......PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

$$
Forecaster...Ansorge
Requested by...Ben McNulty
Type of request...PRESCRIBED
.TAG 2527031.0/DMX
.DELDT 12/04/25
.FormatterVersion 2.0.0
.EMAIL ben.mcnulty@iowa.dnr.gov