FNUS73 KOAX 161308 FWSOAX Spot Forecast for Wheeler Grove Conservation Area...Pottawattamie County Conservation National Weather Service Omaha/Valley NE 808 AM CDT Thu Apr 16 2026 Forecast is based on ignition time of 0900 CDT on April 16. If conditions become unrepresentative, contact the National Weather Service. .DISCUSSION... Expect a warm, dry, and breezy day with plenty of sunshine. Temperature at ignition should be around 50 degrees, climbing to 82 this afternoon. RH will start in the mid 60 percent range, fall below 40% by 1 PM, and bottom out around 23% toward mid to late afternoon. Wind will be southerly, shifting to southwesterly in the afternoon, with speeds of 12-16 mph and gusts 22-25 mph. Should note, these types of days tend to see stronger winds and lower RH than forecast. However, with winds aloft not expected to be much stronger than surface winds, this potential would be more likely realized on lower RH values (sub-20%). Otherwise, given expected deep mixing, smoke dispersal will be excellent this afternoon. Winds will remain southerly overnight with gusts persisting. RH should recover well into the 80s, if not 90s. For Friday, a cold front will bring a wind shift to northwest winds and perhaps some light showers to the location. Winds should start turning clockwise by 9 AM and become fully northwesterly by noon to 1 PM. Said winds will gust 25-30 mph in the afternoon. Temperature will likely top out in the low to mid 70s early in the afternoon with minimum RH around 40%. Strongest Possible 30 ft Wind Speeds on Day of Burn: Gusts to 30 mph Lowest Possible Relative Humidity on Day of Burn: 20 percent .REST OF TODAY... Sky/weather.........Sunny (0-5 percent). Max temperature.....Around 82. Min humidity........24 percent. Eye level winds.....Southwest winds up to 11 mph shifting to the south around 11 mph late in the afternoon. Wind (30 ft)........South winds 8 to 19 mph. Wind (20 ft)........Southwest winds 8 to 16 mph. Mixing height.......6000 ft AGL. Transport winds.....Southwest 14 to 23 mph increasing to 23 to 24 mph late in the afternoon. Smoke dispersal.....Poor (7500 knot-ft) early in the morning increasing to excellent (88100 knot-ft) in the afternoon increasing to excellent (97400 knot-ft) late in the afternoon. GFDI................4. TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........1 1 1 2 2 2 1 2 2 Weather cov..... Weather type.... Tstm cov........ Temp............58 63 68 72 75 79 80 80 82 RH..............70 65 57 46 40 34 31 29 24 20 ft wind dir..S S S S SW SW SW SW S 20 ft wind spd..6 7 8 11 13 14 14 15 14 20 ft wind gust.8 10 12 16 18 18 19 19 19 Eye lvl wnd dir.S S S S SW SW SW SW S Eye lvl wnd spd.4 5 6 8 10 11 11 11 11 Eye lvl wnd gst.6 8 9 12 14 14 14 14 14 30 ft wnd dir...S S S S SW SW SW SW S 30 ft wnd spd...8 9 10 14 16 18 18 19 18 30 ft wnd gst...10 13 15 20 23 23 24 24 24 Mix hgt (kft)...0.6 1.0 1.6 2.1 2.9 3.5 4.8 6.0 5.7 Transp wind dir.S S S SW SW SW SW SW SW Transp wind spd.14 16 17 21 23 23 24 24 23 GFDI............1 1 1 3 4 6 6 7 7 SDspl kt-ft/10008 14 25 40 58 88 116 126 97 .TONIGHT... Sky/weather.........Mostly clear (20-30 percent) then becoming mostly cloudy (55-65 percent). Min temperature.....Around 58. Max humidity........93 percent. Eye level winds.....South winds 8 to 11 mph. Gusts up to 28 mph in the late evening and overnight. Wind (30 ft)........South winds 14 to 19 mph. Gusts up to 28 mph in the late evening and overnight. Wind (20 ft)........South winds 12 to 16 mph. Gusts up to 28 mph in the late evening and overnight. Mixing height.......500 ft AGL. Transport winds.....South 16 to 25 mph. Smoke dispersal.....Good (53800 knot-ft) early in the evening decreasing to poor (5400 knot-ft) late in the night. GFDI................5. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........4 7 5 6 7 13 18 42 46 45 56 60 Weather cov..... Weather type.... Tstm cov........ Temp............80 79 74 70 67 66 65 64 64 64 63 63 RH..............26 28 35 44 50 56 63 70 73 78 84 84 20 ft wind dir..S S S S S S S S S S S S 20 ft wind spd..13 12 11 11 11 12 13 14 15 15 15 15 20 ft wind gust.18 17 14 14 17 18 18 18 20 21 22 22 Eye lvl wnd dir.S S S S S S S S S S S S Eye lvl wnd spd.10 9 8 8 8 9 10 11 11 11 11 11 Eye lvl wnd gst.14 13 11 11 13 13 14 14 15 16 17 17 30 ft wnd dir...S S S S S S S S S S S S 30 ft wnd spd...16 15 14 14 14 15 16 18 19 19 19 19 30 ft wnd gst...23 21 18 18 21 22 23 23 25 26 28 28 Mix hgt (kft)...3.1 1.0 0.5 0.6 0.6 0.6 0.6 0.6 0.7 0.8 0.8 0.9 Transp wind dir.S S S S S S S S S S S S Transp wind spd.21 17 16 18 21 23 21 21 21 23 24 25 GFDI............6 5 3 3 3 3 3 3 3 3 3 3 SDspl kt-ft/100054 16 5 6 10 10 10 11 13 14 16 16 .FRIDAY... Sky/weather.........Partly sunny (50-60 percent). Slight chance of thunderstorms early in the morning. Chance of showers. Slight chance of thunderstorms early in the afternoon. Max temperature.....Around 77. Min humidity........45 percent. Eye level winds.....Southwest winds 12 to 13 mph shifting to the northwest around 13 mph late in the afternoon. Gusts up to 30 mph. Wind (30 ft)........South winds around 20 mph shifting to the northwest around 23 mph late in the afternoon. Gusts up to 30 mph. Wind (20 ft)........South winds around 17 mph shifting to the northwest around 20 mph late in the afternoon. Gusts up to 30 mph. Gusty and erratic winds expected near thunderstorms early in the morning. Gusty and erratic winds expected near thunderstorms early in the afternoon. Mixing height.......3300 ft AGL. Transport winds.....South 24 to 31 mph shifting to the northwest 23 to 25 mph late in the afternoon. Smoke dispersal.....Fair (17700 knot-ft) early in the morning increasing to excellent (76300 knot-ft) in the afternoon. GFDI................5. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........64 68 68 67 67 63 59 55 51 47 43 44 Weather cov..... CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC Weather type.... RW RW RW RW RW RW RW RW RW RW RW Tstm cov........ SCH SCH SCH SCH SCH SCH Temp............63 61 63 65 70 72 73 72 72 71 69 66 RH..............84 93 90 87 73 64 53 49 46 46 45 47 20 ft wind dir..S S S S S SW SW W W W NW NW 20 ft wind spd..16 16 17 17 17 17 17 17 17 18 18 18 20 ft wind gust.21 21 22 22 23 23 23 23 23 24 24 24 Eye lvl wnd dir.S S S S S SW SW W W W NW NW Eye lvl wnd spd.12 12 13 13 13 13 13 13 13 13 13 13 Eye lvl wnd gst.16 16 17 17 17 17 17 17 17 18 18 18 30 ft wnd dir...S S S S S SW SW W W W NW NW 30 ft wnd spd...20 20 21 21 21 21 21 21 21 23 23 23 30 ft wnd gst...26 26 28 28 29 29 29 29 29 30 30 30 Mix hgt (kft)...1.0 1.0 1.8 2.3 3.0 3.2 3.3 3.3 3.0 2.7 2.5 2.7 Transp wind dir.S S S S SW SW W W NW NW NW N Transp wind spd.24 26 31 31 28 26 25 24 23 23 23 25 GFDI............3 2 3 3 4 5 6 6 6 7 7 6 SDspl kt-ft/100018 24 40 58 73 76 74 69 61 52 49 62 $$ Forecaster...Wood Requested by...chad graeve Type of request...PRESCRIBED .TAG 2610522.0/OAX .DELDT 04/16/26 .FormatterVersion 2.0.0 .EMAIL chad.graeve@pottcounty-ia.gov