837
FNUS73 KDMX 071405
FWSDMX

Spot Forecast for Christiansen Forest Preserve...Story County Conservation
National Weather Service Des Moines IA
905 AM CDT Mon Apr 7 2025

Forecast is based on ignition time of 1100 CDT on April 07.
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...

Cool today with an afternoon high around 45 degrees. North winds
remain breezy most of the day, gusting 20-25+ mph into the
afternoon. It will also be quite dry with relative humidity
bottoming out around 30% this afternoon.

.REST OF TODAY...

Sky/weather.........Sunny (0-5 percent).
Temperature.........37 at ignition...Max 45.
RH..................42 percent at ignition...Min 29 percent.
Wind (20 ft)........Winds north at 17 mph at ignition...otherwise
                    North winds 14 to 17 mph.
Mixing height.......4100 ft AGL at ignition...otherwise 5600 ft
                    AGL.
Transport winds.....North 18 to 23 mph.
Smoke dispersal.....Excellent /81400 knot-ft/ at ignition.
                    Max...excellent /93700 knot-ft/.
GFDI................7.

TIME (CDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........1   1   1   1   1   2   1
Weather cov.....
Weather type....
Tstm cov........
Temp............37  40  41  42  43  44  44
RH..............42  34  33  33  32  29  29
20 FT wind dir..N   N   N   N   N   N   N
20 FT wind spd..17  16  15  15  14  14  14
20 FT wind gust.25  23  21  20  21  20  18
Mix hgt (kft)...4.1 4.6 4.9 5.0 5.4 5.5 5.6
Transp wind dir.N   N   N   N   N   N   N
Transp wind spd.23  22  21  21  20  20  18
GFDI............7   7   6   7   7   6   6
Smoke Dispersal.81  88  88  91  91  94  89
Smoke Cat.......GD  GD  GD  GD  GD  GD  GD

.TONIGHT...

Sky/weather.........Clear (0-10 percent).
Temperature.........Min 24.
RH..................Max 65 percent.
Wind (20 ft)........North winds 5 to 13 mph in the evening and
                    overnight becoming light.
Mixing height.......400 ft AGL.
Transport winds.....North 9 to 17 mph shifting to the east 7 to 8
                    mph after 3 am.
Smoke dispersal.....Excellent (81500 knot-ft) early in the evening
                    decreasing to poor (2300 knot-ft) late in the
                    night.
GFDI................3.

TIME (CDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........3      2      2      2      3      4
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
Temp............44     39     33     29     27     25
RH..............29     35     47     58     60     65
20 ft wind......N 13   N 9    N 6    N 5    NE 3   E 3
20 ft wind gust.17     14     12     9      7      6
Mix hgt (ft)....5400   1200   400    400    400    400
Transport wind..N 17   N 13   N 12   NE 12  NE 9   E 7
GFDI............5      3      1      1      1      1
Smoke Dispersal.82     14     4      4      4      2
Smoke Cat.......GOOD   POOR   POOR   POOR   POOR   POOR

.TUESDAY...

Sky/weather.........Sunny (15-25 percent).
Temperature.........Max 53.
RH..................Min 28 percent.
Wind (20 ft)........Light winds becoming south 5 to 12 mph early in
                    the morning.
Mixing height.......3800 ft AGL.
Transport winds.....South 8 to 15 mph.
Smoke dispersal.....Poor (2500 knot-ft) early in the morning
                    increasing to good (48800 knot-ft) in the
                    afternoon.
GFDI................3.

TIME (CDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........5         6         8         18
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Tstm cov........
Temp............25        32        43        50
RH..............65        47        33        29
20 FT wind......SE 3G6    S 7G9     S 9G12    S 10G15
Mix hgt (ft)....300       2100      3600      3800
Transport wind..SE 8      S 9       S 10      S 14
GFDI............0         1         3         5
Smoke Dispersal.3         17        33        46
Smoke Cat.......POOR      POOR      POOR      FAIR

$$
Forecaster...Cogil
Requested by...Brandon Clough
Type of request...PRESCRIBED
.TAG 2509056.0/DMX
.DELDT 04/07/25
.FormatterVersion 2.0.0
.EMAIL bclough@storycountyiowa.gov