FNUS73 KDLH 200923 FWSDLH Spot Forecast for Crex Unit 66...WI DNR National Weather Service Duluth MN 423 AM CDT Mon Apr 20 2026 Forecast is based on ignition time of 0800 CDT on April 20. If there are questions or concerns with this forecast, or if conditions become unrepresentative, contact the National Weather Service in Duluth at 218-729-0653. .DISCUSSION... Quiet this morning with poor ventilation at ignition time. This does quickly improve through the morning though. Southwest winds will be increasing through the day with wind gusts around 25 mph expected in the afternoon. Min RHs will also drop to around 25%. We expect some clouds to persist through the day, but if these manage to clear out then we could see Min RHs closer to 20%. .REST OF TODAY... Sky/weather.........Mostly sunny (20-30 percent). Chance of pcpn......0 percent. Max temperature.....Around 57. Min humidity........26 percent. Wind (20 ft)........South winds 6 to 15 mph. Mixing height.......2100 ft AGL increasing to 4100 ft AGL in the late morning and afternoon. Transport winds.....South 12 to 21 mph shifting to the southwest 23 to 28 mph late in the afternoon. Smoke dispersal.....Poor (7900 knot-ft) increasing to excellent (81000-95100 knot-ft). TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......PC PC MCR MCR PC PC PC PC PC PC Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 Temp............28 33 39 43 46 48 51 54 56 56 RH..............55 45 37 32 30 29 27 26 26 29 20 FT wind dir..S S S S S S S S S S 20 FT wind spd..5 7 10 11 11 12 13 15 15 13 20 FT wind gust.11 14 16 18 19 20 21 22 22 22 Mix hgt (kft)...0.8 2.1 3.3 3.5 3.6 3.8 4.1 3.9 4.1 4.0 Transp wind dir.S S S S S S SW SW SW SW Transp wind spd.12 16 18 20 20 21 23 24 26 28 SDspl kt-ft/10008 29 53 59 61 70 81 81 95 95 .TONIGHT... Sky/weather.........Mostly clear (10-20 percent). Chance of pcpn......0 percent. Min temperature.....Around 36. Max humidity........91 percent. Wind (20 ft)........Southwest winds 5 to 13 mph with gusts to around 22 mph in the evening and overnight becoming light. Mixing height.......3400 ft AGL decreasing to 1300 ft AGL. Transport winds.....South 17 to 26 mph shifting to the southwest 9 to 16 mph in the late evening and overnight, then shifting to the west around 7 mph after 3 am. Smoke dispersal.....Excellent (77300 knot-ft) decreasing to poor (1700 knot-ft). TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky cover.......PC MCR MCR MCR MCR MCR MCR MCR MCR CLR CLR MCR Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............57 56 54 50 49 47 45 45 43 42 39 38 RH..............29 33 36 46 50 56 64 68 73 81 91 89 20 FT wind dir..S S S S S S S SW SW SW SW W 20 FT wind spd..12 11 10 9 8 7 7 6 5 4 3 2 20 FT wind gust.22 21 19 18 15 15 14 12 11 8 6 6 Mix hgt (kft)...3.4 1.3 0.8 0.7 0.6 0.6 0.5 0.5 0.4 0.3 0.3 0.3 Transp wind dir.SW SW S S S S S SW SW SW W NW Transp wind spd.26 21 17 17 16 15 16 13 12 9 7 7 SDspl kt-ft/100079 24 12 10 98 8 6 4 3 2 2 .TUESDAY... Sky/weather.........Sunny (5-15 percent). Chance of pcpn......0 percent. Max temperature.....Around 67. Min humidity........26 percent. Wind (20 ft)........Light winds becoming north 5 to 6 mph in the late morning and afternoon. Mixing height.......1600 ft AGL increasing to 3800 ft AGL late in the morning. Transport winds.....North 7 to 12 mph. Smoke dispersal.....Poor to fair (1900-16300 knot-ft) increasing to fair to good (18500-32100 knot-ft) late in the morning. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky cover.......MCR MCR MCR MCR CLR CLR CLR CLR CLR CLR CLR CLR Weather cov..... Weather type.... Tstm cov........ Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............38 37 41 45 53 58 61 63 65 66 66 67 RH..............87 87 76 68 53 43 37 31 28 26 26 26 20 FT wind dir..N N N N N N N N N N N N 20 FT wind spd..2 3 3 4 5 5 6 6 6 5 5 4 20 FT wind gust.7 8 8 11 12 12 11 11 12 12 11 11 Mix hgt (kft)...0.3 0.3 0.5 1.1 1.6 2.4 3.0 3.6 3.7 3.7 3.8 3.0 Transp wind dir.N N NE N NE N N N N N N N Transp wind spd.7 8 10 12 12 12 12 10 9 9 8 7 SDspl kt-ft/10002 2 5 11 16 24 29 32 31 29 27 19 $$ Forecaster...Lee Requested by...Renae Essenmacher Type of request...PRESCRIBED .TAG 2610752.0/DLH .DELDT 04/20/26 .FormatterVersion 2.0.0 .EMAIL renae.essenmacher@wisconsin.gov