850
FNUS73 KDMX 041330
FWSDMX

Spot Forecast for 3 Mile Cedar Piles...Iowa DNR
National Weather Service Des Moines IA
830 AM CDT Tue Aug 4 2026

Forecast is based on ignition time of 0900 CDT on August 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...

Chances for scattered showers and storms will be prevalent through
the day today, with the highest rain chances from 1 to 7pm.
5-10 mph southwest winds this morning will shift out of the north
at 10-15 mph around noon today. The high will be around 80 today
and RH will get as low as 55-65% this afternoon.

.REST OF TODAY...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    partly sunny (45-55 percent). Slight chance of
                    showers and thunderstorms early in the
                    afternoon. Chance of showers and thunderstorms
                    late in the afternoon.
Temperature.........74 at ignition...Max 85.
RH..................79 percent at ignition...Min 65 percent.
Wind (20 ft)........Winds south at 6 mph at ignition...otherwise
                    Southwest winds around 6 mph shifting to the
                    north 6 to 9 mph in the afternoon. Gusty and
                    erratic winds expected near thunderstorms late
                    in the afternoon.
Mixing height.......1000 ft AGL at ignition...otherwise 3900 ft
                    AGL.
Transport winds.....Southwest 7 to 12 mph shifting to the north 6
                    to 13 mph in the afternoon.
Smoke dispersal.....Poor /10000 knot-ft/ at ignition. Max...poor
                    /31700 knot-ft/.
GFDI................0.

TIME (CDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........72  83  73  58  40  50  52  63  61
Weather cov.....                    SCH CHC CHC CHC
Weather type....                    RW  RW  RW  RW
Tstm cov........                    SCH CHC CHC CHC
Temp............74  77  78  79  81  82  82  82  82
RH..............79  71  71  69  67  65  65  65  65
20 FT wind dir..S   SW  S   SW  N   NE  NE  N   N
20 FT wind spd..6   6   6   6   6   6   7   8   9
20 FT wind gust.10  10  10  10  10  12  12  13  13
Mix hgt (kft)...1.0 1.2 1.9 2.6 3.6 3.9 3.3 3.5 2.9
Transp wind dir.SW  SW  SW  W   NW  W   N   N   N
Transp wind spd.12  10  9   7   6   7   7   9   13
GFDI............0   0   0   0   0   0   0   0   0
Smoke Dispersal.10  11  15  15  18  24  20  28  32
Smoke Cat.......PR  PR  PR  PR  PR  PR  PR  PR  PR

.TONIGHT...

Sky/weather.........Mostly cloudy (70-80 percent). Chance of
                    showers and thunderstorms in the evening and overnight.
Temperature.........Min 63.
RH..................Max 100 percent.
Wind (20 ft)........Northeast winds 8 to 12 mph. Gusty and erratic
                    winds expected near thunderstorms.
Mixing height.......500 ft AGL.
Transport winds.....Northeast 13 to 15 mph.
Smoke dispersal.....Poor (6000 knot-ft).
GFDI................0.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........78  85  93  57  66  80  84  81  73  84  89  94
Weather cov.....CHC CHC CHC CHC CHC CHC LKY LKY LKY DEF DEF DEF
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........CHC CHC CHC CHC CHC CHC LKY LKY LKY DEF DEF DEF
Temp............80  76  73  70  69  68  66  66  65  65  64  64
RH..............67  74  81  90  93  93  100 100 100 100 100 100
20 FT wind dir..N   N   N   NE  NE  NE  NE  N   NE  N   N   NE
20 FT wind spd..10  12  12  12  10  9   9   9   8   8   8   8
20 FT wind gust.15  17  17  16  16  15  14  14  13  13  13  13
Mix hgt (kft)...1.9 1.4 0.9 0.7 0.8 0.6 0.6 0.7 0.7 0.8 1.0 0.5
Transp wind dir.N   N   NE  N   NE  NE  NE  NE  NE  NE  NE  NE
Transp wind spd.15  14  13  14  15  14  14  13  15  13  13  14
GFDI............0   0   0   0   0   0   0   0   0   0   0   0
Smoke Dispersal.24  16  10  8   11  7   7   7   10  9   11  6
Smoke Cat.......PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.WEDNESDAY...

Sky/weather.........Mostly cloudy (80-90 percent). Chance of thunderstorms
                    through the day.
Temperature.........Max 72.
RH..................Min 84 percent.
Wind (20 ft)........Northeast winds 8 to 9 mph. Gusty and erratic
                    winds expected near thunderstorms in the
                    morning.
Mixing height.......1900 ft AGL.
Transport winds.....Northeast 9 to 15 mph.
Smoke dispersal.....Poor (10400 knot-ft).
GFDI................0.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........91  84  88  81  85  84  82  91  90  89  89  74
Weather cov.....CHC CHC CHC CHC SCH CHC LKY DEF LKY LKY LKY LKY
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........CHC CHC CHC CHC SCH CHC CHC CHC CHC CHC CHC CHC
Temp............63  64  64  65  67  68  69  70  70  70  70  71
RH..............100 100 100 97  90  90  87  84  87  87  87  84
20 FT wind dir..NE  NE  NE  NE  NE  NE  NE  NE  NE  NE  NE  NE
20 FT wind spd..8   8   8   8   9   8   8   9   8   8   8   9
20 FT wind gust.13  14  13  13  13  13  13  15  14  14  14  14
Mix hgt (kft)...0.9 0.9 0.9 1.1 1.2 1.3 1.5 1.5 1.5 1.6 1.9 1.9
Transp wind dir.NE  NE  NE  NE  NE  NE  NE  NE  E   NE  NE  NE
Transp wind spd.14  14  15  14  14  13  13  12  10  10  9   9
GFDI............0   0   0   0   0   0   0   0   0   0   0   0
Smoke Dispersal.10  11  12  14  15  15  17  15  14  15  15  16
Smoke Cat.......PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

$$
Forecaster...De Bruin
Requested by...Dray Walter
Type of request...PRESCRIBED
.TAG 2618954.0/DMX
.DELDT 08/04/26
.FormatterVersion 2.0.0
.EMAIL dray.walter@dnr.iowa.gov