Suppression Forecast
Issued by NWS Des Moines, IA

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922
FNUS73 KDMX 031515
FWSDMX

Spot Forecast for Sleepy Hollow...Story County Conservation
National Weather Service Des Moines IA
1015 AM CDT Thu Apr 3 2025

Forecast is based on ignition time of 1200 CDT on April 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 should be dry today with partly to mostly cloudy skies. Winds
will be gradually diminishing through the day with no extremes in
temperature or humidity expected. Wind direction should be fairly
similar from the northwest into the afternoon.

.REST OF TODAY...

Sky/weather.........Partly sunny (50-60 percent).
Max temperature.....Around 54.
Min humidity........52 percent.
Wind (20 ft)........Northwest winds 6 to 10 mph.
Mixing height.......3900 ft AGL.
Transport winds.....Northwest 5 to 14 mph.
Smoke dispersal.....Fair (15700 knot-ft) early in the morning
                    increasing to good (35600 knot-ft) in the
                    afternoon.
GFDI................2.

TIME (CDT)      12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........58  53  48  56  55  58
Weather cov.....
Weather type....
Tstm cov........
Temp............46  48  50  51  52  52
RH..............60  56  54  52  53  54
20 FT wind dir..NW  NW  NW  NW  NW  NW
20 FT wind spd..10  10  8   8   7   6
20 FT wind gust.17  14  12  10  9   7
Mix hgt (kft)...3.0 3.0 3.1 3.5 3.8 3.9
Transp wind dir.NW  NW  NW  NW  NW  NW
Transp wind spd.14  12  9   7   6   5
GFDI............3   3   3   2   2   1
Smoke Dispersal.36  30  25  21  19  16
Smoke Cat.......PR  PR  PR  PR  PR  PR

.TONIGHT...

Sky/weather.........Mostly cloudy (60-70 percent) then becoming
                    partly cloudy (45-55 percent) then becoming
                    mostly cloudy (55-65 percent).
Min temperature.....Around 35.
Max humidity........100 percent.
Wind (20 ft)........North winds around 6 mph shifting to the
                    northeast 6 to 9 mph in the late evening and
                    overnight.
Mixing height.......500 ft AGL.
Transport winds.....North around 5 mph shifting to the east 6 to 14
                    mph early in the evening.
Smoke dispersal.....Fair (14100 knot-ft) early in the evening
                    decreasing to poor (2800 knot-ft) late in the
                    night.
GFDI................2.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........64     68     73     58     49     63
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............53     49     43     40     39     37
RH..............54     63     76     85     89     96
20 ft wind......N 6    NE 6   NE 6   E 7    NE 7   E 8
20 ft wind gust.8      8      8      9      9      10
Mix hgt (ft)....3500   600    500    500    500    600
Transport wind..N 5    NE 6   NE 8   E 10   E 10   E 13
GFDI............2      2      1      1      1      1
Smoke Dispersal.14     3      4      4      5      6
Smoke Cat.......POOR   POOR   POOR   POOR   POOR   POOR

.FRIDAY...

Sky/weather.........Mostly cloudy (75-85 percent). Slight chance of
                    rain early in the afternoon. Chance of rain in
                    the afternoon.
Max temperature.....Around 54.
Min humidity........64 percent.
Wind (20 ft)........East winds 8 to 12 mph.
Mixing height.......2600 ft AGL.
Transport winds.....East 12 to 15 mph.
Smoke dispersal.....Poor (6600 knot-ft) early in the morning
                    increasing to fair (28300 knot-ft) in the
                    afternoon.
GFDI................3.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........66        69        84        94
Weather cov.....                    S CHC     CHANCE
Weather type....NONE      NONE      RAIN      RAIN
Tstm cov........
Temp............35        41        50        53
RH..............100       86        71        64
20 FT wind......E 9G12    E 10G14   E 10G14   E 9G12
Mix hgt (ft)....600       1000      2000      2500
Transport wind..E 14      E 15      E 15      E 12
GFDI............1         2         3         3
Smoke Dispersal.7         14        26        26
Smoke Cat.......POOR      POOR      POOR      POOR

$$
Forecaster...Small
Requested by...Brandon Clough
Type of request...PRESCRIBED
.TAG 2508785.0/DMX
.DELDT 04/03/25
.FormatterVersion 2.0.0
.EMAIL bclough@storycountyiowa.gov