041
FNUS73 KDMX 031441
FWSDMX

Spot Forecast for CBG - Bolton Hay west...Polk County Conservation
National Weather Service Des Moines IA
941 AM CDT Fri Oct 3 2025

Forecast is based on ignition time of 1100 CDT on October 03.
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...

It will be sunny today with winds from the southwest at 5 to 10
mph this morning rising to around 10 mph with an occasional gust
to 20 mph this afternoon. Relative humidity will fall to between
35 and 40% this afternoon. The Cropland Fire Danger Index will
reach the moderate category this afternoon.


.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent).
Max temperature.....Around 90.
Min humidity........38 percent.
Wind (20 ft)........South winds 7 to 10 mph.
Mixing height.......5600 ft AGL.
Transport winds.....South 10 to 15 mph.
Smoke dispersal.....Fair (17900 knot-ft) early in the morning
                    increasing to excellent (67900 knot-ft) in the
                    afternoon.
GFDI................0.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........4   3   3   3   4   5   5
Weather cov.....
Weather type....
Tstm cov........
Temp............81  83  86  87  89  90  88
RH..............54  47  43  42  39  38  42
20 FT wind dir..S   S   S   S   S   S   S
20 FT wind spd..7   8   9   9   10  10  10
20 FT wind gust.12  13  14  15  15  17  16
Mix hgt (kft)...2.0 3.4 4.4 5.1 5.6 5.6 5.2
Transp wind dir.SW  SW  S   S   S   S   S
Transp wind spd.10  12  12  13  13  14  15
GFDI............0   0   0   0   0   0   0
Smoke Dispersal.18  34  44  56  61  68  68
Smoke Cat.......PR  PR  FR  FR  GD  GD  GD

.TONIGHT...

Sky/weather.........Clear (0-10 percent).
Min temperature.....Around 66.
Max humidity........81 percent.
Wind (20 ft)........South winds 7 to 9 mph.
Mixing height.......500 ft AGL.
Transport winds.....South 12 to 15 mph.
Smoke dispersal.....Fair (13300 knot-ft) early in the evening
                    decreasing to poor (5300 knot-ft) late in the
                    night.
GFDI................0.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........5   4   3   3   2   3   6   6   3   2   2   2
Weather cov.....
Weather type....
Tstm cov........
Temp............88  84  78  76  74  73  72  72  71  69  68  68
RH..............42  48  58  62  66  68  71  73  76  78  81  81
20 FT wind dir..S   S   S   S   S   S   S   S   S   S   S   S
20 FT wind spd..9   7   7   7   7   7   7   7   7   8   8   8
20 FT wind gust.15  13  13  13  13  14  13  13  13  14  14  15
Mix hgt (kft)...1.2 0.5 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.13  12  12  13  14  15  15  14  14  14  14  14
GFDI............0   0   0   0   0   0   0   0   0   0   0   0
Smoke Dispersal.13  5   6   6   7   7   7   7   7   7   7   7
Smoke Cat.......PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.SATURDAY...

Sky/weather.........Sunny (0-5 percent).
Max temperature.....Around 89.
Min humidity........35 percent.
Wind (20 ft)........South winds 9 to 18 mph. Gusts up to 31 mph.
Mixing height.......4600 ft AGL.
Transport winds.....South 14 to 21 mph increasing to 24 to 26 mph
                    in the late morning and afternoon.
Smoke dispersal.....Poor (6600 knot-ft) early in the morning
                    increasing to excellent (106200 knot-ft) in the
                    afternoon.
GFDI................0.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........2   1   0   0   4   4   4   3   3   2   2   2
Weather cov.....
Weather type....
Tstm cov........
Temp............68  66  68  72  78  82  85  86  87  88  89  87
RH..............78  84  78  68  56  47  43  43  40  38  35  36
20 FT wind dir..S   S   S   S   S   S   S   S   S   S   S   S
20 FT wind spd..9   9   10  12  14  15  18  18  18  18  18  17
20 FT wind gust.15  15  18  21  25  26  29  30  30  31  31  29
Mix hgt (kft)...0.6 0.6 0.7 1.1 1.7 2.3 3.0 3.7 4.0 4.3 4.6 3.3
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.14  16  18  21  24  24  24  25  26  26  26  24
GFDI............0   0   0   0   0   0   0   0   0   0   0   0
Smoke Dispersal.7   8   12  20  35  48  64  81  91  101 106 70
Smoke Cat.......PR  PR  PR  PR  PR  FR  GD  GD  GD  VGD VGD GD

$$
Forecaster...Ansorge
Requested by...Lael Neal
Type of request...PRESCRIBED
.TAG 2522934.0/DMX
.DELDT 10/03/25
.FormatterVersion 2.0.0
.EMAIL lael.neal@polkcountyiowa.gov