Spot Forecast
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
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FNUS73 KDMX 051259
FWSDMX
Spot Forecast for Carroll Prairie...Story County Conservation
National Weather Service Des Moines IA
759 AM CDT Tue May 5 2026
Forecast is based on ignition time of 1100 CDT on May 05.
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...
Partly cloudy and dry conditions are expected throughout the day
today. Winds are currently light and variable at around 5 mph but
will become from the northwest at around 10 mph throughout the
day. Wind gusts of around 20 mph are possible later this
afternoon. Temperatures are around 51 near the burn site and will
increase to 60 today, while relative humidity is currently around
50% and will bottom out between 20 and 25% this afternoon.
.REST OF TODAY...
Sky/weather.........Partly sunny (60-70 percent).
Max temperature.....Around 60.
Min humidity........27 percent.
Wind (20 ft)........Northwest winds 8 to 10 mph.
Mixing height.......7900 ft AGL.
Transport winds.....Northwest 15 to 20 mph.
Smoke dispersal.....Good (77800 knot-ft) early in the morning
increasing to very good (129800 knot-ft) in the
afternoon.
GFDI................1.
TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........59 56 65 74 71 72 74
Weather cov.....
Weather type....
Tstm cov........
Temp............55 57 59 59 60 60 59
RH..............37 33 29 29 28 28 27
20 FT wind dir..NW NW NW NW NW NW NW
20 FT wind spd..8 9 10 10 10 10 10
20 FT wind gust.13 15 16 18 17 18 17
Mix hgt (kft)...6.0 6.8 7.4 7.5 7.6 7.9 7.9
Transp wind dir.NW NW NW NW NW NW NW
Transp wind spd.15 16 16 18 20 18 18
GFDI............0 0 1 1 1 1 1
Smoke Dispersal.78 95 104 121 130 126 126
Smoke Cat.......GD GD VGD VGD VGD VGD VGD
.TONIGHT...
Sky/weather.........Mostly cloudy (70-80 percent) then becoming
partly cloudy (45-55 percent) then becoming
mostly cloudy (50-60 percent).
Min temperature.....Around 38.
Max humidity........64 percent.
Wind (20 ft)........North winds 6 to 10 mph decreasing to around 6
mph overnight.
Mixing height.......500 ft AGL.
Transport winds.....Northwest 14 to 20 mph shifting to the north 10
to 13 mph early in the evening.
Smoke dispersal.....Very good (129800 knot-ft) early in the evening
decreasing to good (60200 knot-ft) late in the
night decreasing to poor (4500 knot-ft) early
in the evening.
GFDI................1.
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........76 75 80 81 76 74 65 64 46 49 49 54
Weather cov.....
Weather type....
Tstm cov........
Temp............59 58 55 52 51 48 46 44 43 41 40 40
RH..............27 29 34 38 41 46 49 53 55 62 64 64
20 FT wind dir..NW N N N N N N N N N N N
20 FT wind spd..10 9 7 6 6 6 6 6 6 6 6 6
20 FT wind gust.16 15 13 13 12 12 12 10 9 9 9 8
Mix hgt (kft)...7.6 5.0 0.9 0.9 0.8 0.7 0.6 0.6 0.6 0.6 0.5 0.5
Transp wind dir.NW NW NW N N N N N N N N N
Transp wind spd.20 14 10 12 13 10 13 12 12 12 12 10
GFDI............1 0 0 0 0 0 0 0 0 0 0 0
Smoke Dispersal.130 60 8 9 9 6 7 6 6 6 5 5
Smoke Cat.......VGD GD PR PR PR PR PR PR PR PR PR PR
.WEDNESDAY...
Sky/weather.........Partly sunny (55-65 percent).
Max temperature.....Around 57.
Min humidity........30 percent.
Wind (20 ft)........North winds 6 to 10 mph.
Mixing height.......7900 ft AGL.
Transport winds.....North 8 to 16 mph shifting to the northwest 15
to 16 mph in the afternoon.
Smoke dispersal.....Poor (3300 knot-ft) early in the morning
increasing to good (95200 knot-ft) in the
afternoon increasing to good (98300 knot-ft)
early in the morning increasing to very good
(112000 knot-ft) in the afternoon in the
afternoon.
GFDI................1.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........64 56 56 53 56 58 61 66 62 60 58 57
Weather cov.....
Weather type....
Tstm cov........
Temp............38 40 41 44 48 50 52 54 55 56 57 57
RH..............67 67 62 55 46 42 39 35 34 32 31 30
20 FT wind dir..N N N N N N N NW NW NW NW NW
20 FT wind spd..6 6 6 7 8 9 10 10 10 10 10 10
20 FT wind gust.8 8 9 10 12 14 15 16 17 17 16 15
Mix hgt (kft)...0.5 0.5 1.3 2.5 4.9 6.1 6.9 7.6 7.7 7.8 7.9 7.3
Transp wind dir.N N N NW NW NW NW NW NW NW NW NW
Transp wind spd.9 8 9 10 13 15 16 16 16 16 16 15
GFDI............0 0 0 0 0 0 0 0 0 1 0 0
Smoke Dispersal.4 3 10 23 54 80 95 106 110 112 111 98
Smoke Cat.......PR PR PR PR FR GD GD VGD VGD VGD VGD GD
$$
Forecaster...Rotter/Hagenhoff
Requested by...Brandon Clough
Type of request...PRESCRIBED
.TAG 2612764.0/DMX
.DELDT 05/05/26
.FormatterVersion 2.0.0
.EMAIL bclough@storycountyiowa.gov