FNUS73 KDMX 211308 FWSDMX Spot Forecast for Springbrook NW...Iowa DNR National Weather Service Des Moines IA 808 AM CDT Tue Apr 21 2026 Forecast is based on ignition time of 0800 CDT on April 21. 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 high temperatures in the upper 70s to low 80s. A dry frontal passage will allow for shifting winds from southwesterly to westerly late in the morning, then northwesterly late in the afternoon, with speeds highest in the morning up to 15-20 mph and decreasing later in the day. Minimum RH values are expected to drop into the low to mid 20s this afternoon. .REST OF TODAY... Sky/weather.........Sunny (15-25 percent). Max temperature.....Around 83. Min humidity........23 percent. Wind (20 ft)........West winds 6 to 14 mph decreasing to around 6 mph late in the afternoon. Mixing height.......7000 ft AGL. Transport winds.....West 16 to 25 mph decreasing to 8 to 12 mph in the afternoon. Smoke dispersal.....Poor (19600 knot-ft) early in the morning increasing to good (61900 knot-ft) in the afternoon. GFDI................2. TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........7 4 3 6 3 16 41 29 8 4 Weather cov..... Weather type.... Tstm cov........ Temp............62 65 68 71 74 77 80 81 81 82 RH..............60 58 52 46 41 36 30 27 25 23 20 FT wind dir..SW SW W W W W W W W W 20 FT wind spd..14 14 13 12 10 8 7 6 6 6 20 FT wind gust.20 20 20 17 16 13 12 10 10 8 Mix hgt (kft)...0.9 1.5 1.9 2.3 2.8 3.5 4.5 6.1 6.9 7.0 Transp wind dir.SW W W W W W W W W W Transp wind spd.25 25 21 16 12 9 8 9 10 9 GFDI............2 2 2 2 2 2 2 2 2 2 Smoke Dispersal.20 32 34 33 28 28 31 49 62 56 Smoke Cat.......PR PR PR PR PR PR PR FR GD FR .TONIGHT... Sky/weather.........Mostly clear (5-15 percent). Min temperature.....Around 54. Max humidity........93 percent. Wind (20 ft)........Light winds becoming south 5 to 7 mph overnight. Mixing height.......400 ft AGL. Transport winds.....West 5 to 8 mph shifting to the southeast 6 to 9 mph late in the evening, then shifting to the southwest 12 to 15 mph overnight. Smoke dispersal.....Poor (2400 knot-ft). GFDI................1. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........16 6 4 4 3 5 9 9 8 10 15 14 Weather cov..... Weather type.... Tstm cov........ Temp............81 80 75 69 65 63 61 59 57 57 55 55 RH..............23 27 32 39 46 52 58 68 77 80 93 93 20 FT wind dir..W W S SE E E S SE S S S S 20 FT wind spd..3 2 2 2 3 3 5 6 6 7 7 6 20 FT wind gust.7 5 5 6 6 7 8 9 9 12 12 12 Mix hgt (kft)...5.5 1.2 0.9 1.0 0.5 0.4 0.4 0.4 0.4 0.5 0.5 0.5 Transp wind dir.W W W E E E S SW SW SW SW SW Transp wind spd.8 5 6 6 6 8 9 12 14 14 15 15 GFDI............1 1 1 1 1 1 1 1 0 1 1 0 Smoke Dispersal.39 5 5 5 2 3 3 4 5 6 7 7 Smoke Cat.......PRPR PR PR PR PR PR PR PR PR PR PR .WEDNESDAY... Sky/weather.........Sunny (10-20 percent). Max temperature.....Around 82. Min humidity........41 percent. Wind (20 ft)........South winds 7 to 16 mph increasing to around 17 mph late in the afternoon. Mixing height.......3900 ft AGL. Transport winds.....South 13 to 22 mph increasing to around 23 mph late in the afternoon. Smoke dispersal.....Poor (6300 knot-ft) early in the morning increasing to good (77100 knot-ft) in the afternoon. GFDI................3. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........13 17 13 14 14 12 10 8 9 9 10 12 Weather cov..... Weather type.... Tstm cov........ Temp............55 54 56 61 67 72 75 78 80 81 82 81 RH..............93 96 93 84 73 64 58 52 47 44 41 41 20 FT wind dir..S S SW SW S S S S S S S S 20 FT wind spd..7 7 8 9 10 12 13 14 15 16 17 17 20 FT wind gust.13 12 13 14 16 17 20 21 22 23 23 23 Mix hgt (kft)...0.5 0.5 0.9 1.0 1.4 1.7 2.2 2.7 3.1 3.5 3.9 3.4 Transp wind dir.SW SW SW SW S S S S S S S S Transp wind spd.14 14 14 13 14 16 18 20 21 22 23 23 GFDI............1 0 1 1 1 2 2 3 4 5 5 5 Smoke Dispersal.6 6 11 12 16 24 35 46 57 67 77 69 Smoke Cat.......PR PR PR PR PR PR PR FR FR GD GD GD $$ Forecaster...Bury Requested by...Tanner Venteicher Type of request...PRESCRIBED .TAG 2611106.0/DMX .DELDT 04/21/26 .FormatterVersion 2.0.0 .EMAIL tanner.venteicher@dnr.iowa.gov