820
FNUS73 KDMX 101333
FWSDMX

Spot Forecast for Merehoff Point...Iowa DNR
National Weather Service Des Moines IA
833 AM CDT Tue Jun 10 2025

Forecast is based on ignition time of 1100 CDT on June 10.
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 light out of the west to southwest with mostly
clear, but occasionally smoky, skies today. Temperatures will warm
into the low 80s this afternoon, with relative humidity values
falling to around 30 percent.

.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 86.
Min humidity........33 percent.
Wind (20 ft)........Southwest winds 10 to 12 mph.
Mixing height.......4300 ft AGL.
Transport winds.....West 14 to 16 mph.
Smoke dispersal.....Good (43000 knot-ft).

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........6   8   12  12  15  16  16
Weather cov.....
Weather type....
Tstm cov........
Temp............73  76  79  81  82  83  83
RH..............53  45  39  35  34  33  34
20 FT wind dir..W   W   W   SW  SW  SW  SW
20 FT wind spd..10  10  10  12  12  12  12
20 FT wind gust.16  15  15  15  16  17  17
Mix hgt (kft)...3.1 3.8 4.1 4.3 4.3 4.3 4.0
Transp wind dir.W   W   W   W   W   W   SW
Transp wind spd.16  15  14  14  15  15  16
Smoke Dispersal.43  50  49  52  56  56  56
Smoke Cat.......FR  FR  FR  FR  FR  FR  FR

.TONIGHT...

Sky/weather.........Mostly clear (5-15 percent).
Min temperature.....Around 62.
Max humidity........75 percent.
Wind (20 ft)........Southwest winds 8 to 12 mph.
Mixing height.......500 ft AGL.
Transport winds.....Southwest 15 to 23 mph.
Smoke dispersal.....Good (41500 knot-ft) early in the evening
                    decreasing to poor (6500 knot-ft) late in the
                    night.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........16     16     14     10     8      11
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............84     79     71     68     66     64
RH..............33     44     55     59     63     70
20 ft wind......SW 12  SW 10  SW 9   SW 12  SW 10  SW 10
20 ft wind gust.17     16     14     17     17     16
Mix hgt (ft)....3000   500    600    700    600    600
Transport wind..SW 16  SW 15  S 17   SW 21  SW 22  SW 21
Smoke Dispersal.42     7      8      13     12     11
Smoke Cat.......FAIR   POOR   POOR   POOR   POOR   POOR

.WEDNESDAY...

Sky/weather.........Mostly sunny (30-40 percent). Slight chance of
                    showers and thunderstorms late in the
                    afternoon. Chance of showers and thunderstorms
                    late in the afternoon.
Max temperature.....Around 90.
Min humidity........41 percent.
Wind (20 ft)........Southwest winds 6 to 7 mph shifting to the
                    south 6 to 10 mph early in the morning. Gusty
                    and erratic winds expected near thunderstorms
                    late in the afternoon.
Mixing height.......5900 ft AGL.
Transport winds.....Southwest 7 to 14 mph shifting to the southeast
                    8 to 9 mph late in the morning, then shifting
                    to the south 12 to 17 mph in the afternoon.
Smoke dispersal.....Poor (2700 knot-ft) early in the morning
                    increasing to excellent (76800 knot-ft) in the
                    afternoon.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........13        14        24        42
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
Temp............62        73        86        90
RH..............78        62        45        41
20 FT wind......SW 7G10   S 7G8     S 8G9     S 10G13
Mix hgt (ft)....400       1300      2800      5100
Transport wind..SW 14     E 8       S 9       S 14
Smoke Dispersal.5         9         23        61
Smoke Cat.......POOR      POOR      POOR      GOOD

$$
Forecaster...Dodson
Requested by...Jeff Feisel
Type of request...PRESCRIBED
.TAG 2515649.0/DMX
.DELDT 06/10/25
.FormatterVersion 2.0.0
.EMAIL jeffrey.feisel@dnr.iowa.gov