768
FNUS73 KDMX 181303
FWSDMX

Spot Forecast for Sedan-Fosters hill...Iowa DNR
National Weather Service Des Moines IA
803 AM CDT Fri Apr 18 2025

Forecast is based on ignition time of 0800 CDT on April 18.
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 from the south-southwest at 10 to 15 mph at the issuance of
this forecast will become southwest by later this morning and
northwest by later this afternoon as a cold front moves through
the area. Wind speeds of 10 to 20 mph will be common with gusts of
20 to 25 mph. Minimum relative humidities will be high today at
or above 65% under a mostly cloudy sky with a low chance of a
drizzle or a rain shower or two.


.REST OF TODAY...

Sky/weather.........Mostly cloudy (75-85 percent). Slight chance of
                    showers late in the afternoon.
Max temperature.....Around 73.
Min humidity........70 percent.
Wind (20 ft)........Southwest winds 13 to 15 mph shifting to the
                    west 13 to 14 mph late in the afternoon.
Mixing height.......3300 ft AGL.
Transport winds.....Southwest 18 to 24 mph shifting to the
                    northwest 15 to 18 mph late in the afternoon.
Smoke dispersal.....Fair (16800 knot-ft) early in the morning
                    increasing to excellent (64000 knot-ft) in the
                    afternoon.
GFDI................2.

TIME (CDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........64  75  75  87  91  92  90  90  85  83
Weather cov.....                                SCH SCH
Weather type....                                RW  RW
Tstm cov........
Temp............67  70  71  70  69  68  67  65  63  61
RH..............81  76  71  71  70  70  70  70  72  72
20 FT wind dir..SW  SW  SW  SW  SW  SW  W   W   W   NW
20 FT wind spd..13  14  15  15  15  14  14  14  13  13
20 FT wind gust.18  22  24  24  23  21  22  22  21  21
Mix hgt (kft)...1.1 1.8 2.7 3.2 3.3 2.7 2.1 2.0 2.2 2.1
Transp wind dir.SW  SW  SW  SW  SW  SW  W   W   NW  NW
Transp wind spd.18  24  24  23  22  20  15  15  18  17
GFDI............1   2   2   2   1   1   1   1   1   1
Smoke Dispersal.17  39  57  64  63  46  27  27  35  32
Smoke Cat.......PR  PR  FR  GD  GD  FR  PR  PR  PR  PR

.TONIGHT...

Sky/weather.........Mostly cloudy (80-90 percent). Slight chance of
                    rain showers early in the evening. Slight
                    chance of thunderstorms early in the evening.
Min temperature.....Around 43.
Max humidity........80 percent.
Wind (20 ft)........Northwest winds 9 to 13 mph shifting to the
                    north 7 to 8 mph overnight. Gusty and erratic
                    winds expected near thunderstorms early in the
                    evening.
Mixing height.......800 ft AGL.
Transport winds.....North 14 to 22 mph.
Smoke dispersal.....Good (38900 knot-ft) early in the evening
                    decreasing to poor (10200 knot-ft) late in the
                    night.
GFDI................1.

TIME (CDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........86  92  91  94  93  93  86  80  80  74  74  81
Weather cov.....SCH SCH
Weather type....RW  RW
Tstm cov........    SCH
Temp............59  57  55  53  53  52  51  50  50  48  47  46
RH..............72  72  74  80  77  77  77  77  74  77  74  73
20 FT wind dir..NW  NW  NW  NW  NW  NW  N   N   N   N   N   N
20 FT wind spd..13  12  12  12  12  10  9   7   8   8   8   8
20 FT wind gust.21  20  20  20  20  18  17  16  16  16  16  16
Mix hgt (kft)...2.0 2.1 2.2 2.1 2.1 2.0 1.1 1.4 1.4 0.8 1.6 0.9
Transp wind dir.NW  N   N   N   N   N   N   N   N   N   N   N
Transp wind spd.17  16  18  20  20  22  18  14  15  15  16  15
GFDI............1   1   1   1   1   1   1   0   1   1   1   1
Smoke Dispersal.31  30  35  35  36  39  18  16  18  10  22  12
Smoke Cat.......PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.SATURDAY...

Sky/weather.........Mostly cloudy (65-75 percent) then becoming
                    partly sunny (50-60 percent). Slight chance of
                    rain showers in the afternoon.
Max temperature.....Around 59.
Min humidity........39 percent.
Wind (20 ft)........North winds 8 to 10 mph.
Mixing height.......3900 ft AGL.
Transport winds.....North 10 to 16 mph.
Smoke dispersal.....Fair (15800 knot-ft) early in the morning
                    increasing to good (40100 knot-ft) in the
                    afternoon.
GFDI................1.

TIME (CDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........83  75  65  60  46  51  58  59  58  57  58  62
Weather cov.....                            SCH SCH SCH SCH SCH
Weather type....                            RW  RW  RW  RW  RW
Tstm cov........
Temp............45  44  46  48  50  53  55  57  58  58  59  58
RH..............73  76  71  63  58  50  45  42  39  39  39  40
20 FT wind dir..N   N   N   N   N   N   N   N   NE  NE  NE  NE
20 FT wind spd..8   8   8   9   10  10  10  9   9   9   9   8
20 FT wind gust.16  17  17  17  17  17  17  16  16  16  16  15
Mix hgt (kft)...1.1 1.1 1.6 2.0 2.5 3.0 3.3 3.6 3.9 3.9 3.6 3.1
Transp wind dir.N   N   N   N   N   N   N   N   N   NE  NE  NE
Transp wind spd.16  16  16  16  16  15  14  13  12  10  10  12
GFDI............1   1   1   1   1   1   1   1   1   1   1   1
Smoke Dispersal.16  16  22  28  35  39  40  40  38  35  33  29
Smoke Cat.......PR  PR  PR  PR  PR  PR  FR  FR  PR  PR  PR  PR

$$
Forecaster...Ansorge
Requested by...Lincoln Utt
Type of request...PRESCRIBED
.TAG 2510994.0/DMX
.DELDT 04/18/25
.FormatterVersion 2.0.0
.EMAIL lincoln.utt@dnr.iowa.gov