188
FNUS73 KDMX 191223
FWSDMX

Spot Forecast for Fallow Marsh RX...FWS
National Weather Service Des Moines IA
723 AM CDT Sat Apr 19 2025

Forecast is based on ignition time of 0800 CDT on April 19.
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 a high around 55 this afternoon. Wind will be out
of the northwest at 5 to 10 mph, with an occasional gust near 15
mph. High clouds early this morning will give way to more sunny
conditions later this morning and into the afternoon. Relative
humidity will drop off to around 30% by this afternoon.

.REST OF TODAY...

Sky/weather.........Sunny (5-15 percent).
Max temperature.....Around 56.
Min humidity........30 percent.
Wind (20 ft)........Northwest winds 7 to 10 mph.
Mixing height.......6900 ft AGL.
Transport winds.....Northwest 12 to 15 mph increasing to around 24
                    mph late in the afternoon, then decreasing to 9
                    to 10 mph late in the afternoon.
Smoke dispersal.....Poor (6300 knot-ft) early in the morning
                    increasing to excellent (72100 knot-ft) in the
                    afternoon.
GFDI................4.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........11  8   7   8   8   10  10  13  9   8
Weather cov.....
Weather type....
Tstm cov........
Temp............36  40  43  46  48  50  52  54  55  56
RH..............69  62  55  47  44  41  38  34  31  30
20 FT wind dir..NW  NW  N   NW  NW  NW  NW  NW  NW  NW
20 FT wind spd..9   9   10  10  10  10  9   8   8   7
20 FT wind gust.12  13  14  14  14  14  14  12  12  10
Mix hgt (kft)...0.6 1.5 2.5 4.5 5.5 6.0 6.4 6.6 6.7 6.9
Transp wind dir.N   N   N   N   NW  NW  NW  NW  NW  W
Transp wind spd.12  13  13  14  15  15  14  24  10  9
GFDI............2   3   3   4   5   5   5   5   4   3
Smoke Dispersal.6   16  25  54  66  72  64  66  61  55
Smoke Cat.......PR  PR  PR  FR  GD  GD  GD  GD  GD  FR

.TONIGHT...

Sky/weather.........Partly cloudy (20-30 percent).
Min temperature.....Around 34.
Max humidity........72 percent.
Wind (20 ft)........Northwest winds 5 to 6 mph early in the evening
                    becoming light, then becoming southeast 6 to 8
                    mph in the late evening and overnight.
Mixing height.......300 ft AGL.
Transport winds.....West 6 to 7 mph shifting to the southeast 6 to
                    14 mph early in the evening.
Smoke dispersal.....Good (38300 knot-ft) early in the evening
                    decreasing to poor (3000 knot-ft) late in the
                    night.
GFDI................3.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........8   7   8   8   8   8   9   11  14  22  34  45
Weather cov.....
Weather type....
Tstm cov........
Temp............55  55  51  47  45  43  41  40  39  38  37  37
RH..............31  31  37  44  49  55  62  64  67  70  70  72
20 FT wind dir..NW  N   E   SE  SE  SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..6   5   3   6   7   7   7   8   8   8   8   8
20 FT wind gust.8   8   9   10  12  12  12  13  13  14  14  14
Mix hgt (kft)...6.4 5.7 0.6 0.6 0.3 0.3 0.4 0.4 0.4 0.4 0.4 0.4
Transp wind dir.W   W   SE  SE  SE  SE  SE  SE  SE  SE  SE  SE
Transp wind spd.7   6   6   9   10  10  12  12  13  13  14  14
GFDI............3   2   2   2   2   2   2   2   2   2   2   2
Smoke Dispersal.38  23  3   5   3   3   4   4   4   4   5   5
Smoke Cat.......PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

$$
Forecaster...Hagenhoff
Requested by...Dane Nesbit
Type of request...PRESCRIBED
.TAG 2511056.0/DMX
.DELDT 04/19/25
.FormatterVersion 2.0.0
.EMAIL dane.nesbit@usda.gov