FNUS73 KDMX 201312 FWSDMX Spot Forecast for West Lake...Iowa DNR Rathbun Wildlife Unit National Weather Service Des Moines IA 812 AM CDT Mon Apr 20 2026 Forecast is based on ignition time of 0800 CDT on April 20. 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... Sunny skies are expected today, with winds out of the south- southeast turning breezy, gusting to 20-25 mph and isolated to 30 mph on occasion. Minimum RH values will fall into the mid to upper 30s into the afternoon. .REST OF TODAY... Sky/weather.........Sunny (0-10 percent). Max temperature.....Around 68. Min humidity........38 percent. Wind (20 ft)........South winds 7 to 15 mph. Mixing height.......3800 ft AGL. Transport winds.....South 14 to 21 mph. Smoke dispersal.....Poor (6600 knot-ft) early in the morning increasing to good (67500 knot-ft) in the afternoon. GFDI................2. TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........2 2 1 1 1 2 2 1 9 6 Weather cov..... Weather type.... Tstm cov........ Temp............40 46 50 53 57 60 64 66 67 68 RH..............68 58 52 46 42 41 38 38 39 39 20 FT wind dir..SE SE SE SE SE S S S S S 20 FT wind spd..7 10 13 14 14 15 15 15 15 15 20 FT wind gust. 18 20 21 21 21 21 22 22 22 Mix hgt (kft)...0.6 1.2 1.8 2.1 2.6 2.9 3.0 3.5 3.6 3.8 Transp wind dir.S S S S S S S S S S Transp wind spd.14 17 18 20 18 20 18 18 20 21 GFDI............1 1 1 2 2 2 2 3 2 3 Smoke Dispersal.7 19 29 35 42 49 48 55 62 68 Smoke Cat.......PR PR PR PR FR FR FR FR GD GD .TONIGHT... Sky/weather.........Mostly clear (15-25 percent) to mostly cloudy (50-60 percent). Min temperature.....Around 54. Max humidity........69 percent. Wind (20 ft)........Southwest winds 12 to 18 mph. Mixing height.......500 ft AGL. Transport winds.....South 14 to 20 mph shifting to the southwest 22 to 26 mph in the late evening and overnight. Smoke dispersal.....Fair (51300 knot-ft) early in the evening decreasing to poor (6500 knot-ft) late in the night. GFDI................2. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........5 1 2 10 24 29 41 55 56 55 36 30 Weather cov..... Weather type.... Tstm cov........ Temp............67 66 63 61 60 60 59 59 57 57 56 55 RH..............40 43 50 56 58 58 57 55 59 62 64 69 20 FT wind dir..S S S S S S SW SW SW SW SW SW 20 FT wind spd..14 12 12 14 17 17 18 18 18 18 17 17 20 FT wind gust.22 21 18 22 24 24 25 25 25 24 24 24 Mix hgt (kft)...3.0 0.6 0.5 0.6 0.7 0.7 0.6 0.7 0.6 0.7 0.7 0.7 Transp wind dir.S S S S S SW SW SW SW SW SW SW Transp wind spd.20 14 15 20 24 26 25 25 24 23 23 22 GFDI............2 2 2 2 2 2 2 2 2 2 2 2 Smoke Dispersal.51 8 7 10 14 15 14 14 12 13 15 14 Smoke Cat.......FR PR PR PR PR PR PR PR PR PR PR PR .TUESDAY... Sky/weather.........Sunny (10-20 percent). Max temperature.....Around 81. Min humidity........39 percent. Wind (20 ft)........Southwest winds 10 to 16 mph. Mixing height.......4800 ft AGL. Transport winds.....Southwest 20 to 28 mph decreasing to around 16 mph late in the afternoon. Smoke dispersal.....Poor (13000 knot-ft) early in the morning increasing to good (84300 knot-ft) in the afternoon. GFDI................2. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........24 15 9 7 4 8 12 16 13 10 7 7 Weather cov..... Weather type.... Tstm cov........ Temp............55 54 57 61 65 69 73 76 78 80 81 81 RH..............69 74 72 70 65 61 55 50 47 42 39 39 20 FT wind dir..SW SW SW SW SW SW SW SW SW SW SW SW 20 FT wind spd..16 15 16 16 16 16 15 14 13 13 12 10 20 FT wind gust.23 23 23 23 23 22 21 20 18 18 17 15 Mix hgt (kft)...0.7 0.7 1.3 1.7 2.0 2.5 3.0 3.5 4.3 4.8 4.8 3.5 Transp wind dir.SW SW SW SW SW SW SW SW SW W W SW Transp wind spd.23 22 26 28 26 25 23 21 21 21 20 16 GFDI............1 1 1 2 2 2 2 2 2 2 2 2 Smoke Dispersal.14 13 30 41 46 53 59 63 75 84 81 51 Smoke Cat.......PR PR PR FR FR FR FR GD GD GD GD FR $$ Forecaster...Bury Requested by...Greg l Schmitt Type of request...PRESCRIBED .TAG 2610843.0/DMX .DELDT 04/20/26 .FormatterVersion 2.0.0 .EMAIL Greg.Schmitt@dnr.iowa.gov