FNUS73 KGRB 202012 FWSGRB Spot Forecast for Jake koebernik...DNR National Weather Service Green Bay WI 312 PM CDT Mon Apr 20 2026 Forecast is based on ignition time of 1500 CDT on April 20. If conditions become unrepresentative...contact the National Weather Service. Please contact our office if you have questions or concerns with this forecast. .DISCUSSION...Gusty south to southwest winds will continue into this evening. High level clouds will move across the region, then thin out later tonight. Relative humidity will remain at 20 to 25 percent for the next hour or two, then start to rise. A weak surface trough will move through the region midday Tuesday, accompanied by a wind shift to the northwest. .REST OF TODAY... Sky/weather.........Partly sunny (45-55 percent). Max temperature.....Around 56. Min humidity........23 percent. Wind (20 ft)........Southwest winds 9 to 13 mph with gusts to 20 mph. Mixing height.......4900 ft AGL. Transport winds.....Southwest 17 to 20 mph. Smoke dispersal.....Excellent (73200 knot-ft). TIME (CDT) 3PM 4PM 5PM Sky (%).........14 35 40 Weather cov..... Weather type.... Tstm cov........ Temp............54 56 55 RH..............24 23 25 20 FT wind dir..SW SW S 20 FT wind spd..11 11 11 20 FT wind gust.16 18 16 Mix hgt (kft)...4.9 4.8 4.5 Transp wind dir.SW SW SW Transp wind spd.17 20 20 SDspl kt-ft/100073 81 77 .TONIGHT... Sky/weather.........Mostly cloudy (55-65 percent) then becoming mostly clear (15-25 percent). Min temperature.....Around 41. Max humidity........76 percent. Wind (20 ft)........South winds 8 to 12 mph with gusts near 20 mph early. then decreasing to 5 to 10 mph. Mixing height.......600 ft AGL. Transport winds.....Southwest 12 to 16 mph. Smoke dispersal.....Good (35000 knot-ft) early in the evening decreasing to poor (6600 knot-ft) late in the night. TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........33 29 20 23 28 46 59 65 51 29 17 14 Weather cov..... Weather type.... Tstm cov........ Temp............55 53 49 46 44 43 43 43 43 41 42 41 RH..............27 31 37 45 51 55 57 60 60 67 67 70 20 FT wind dir..S S S S S S S S S S S S 20 FT wind spd..10 10 9 9 8 8 8 7 7 6 5 5 20 FT wind gust.18 16 16 18 18 19 19 18 16 14 14 13 Mix hgt (kft)...2.5 0.9 0.8 0.8 0.7 0.7 0.7 0.7 0.7 0.6 0.7 0.6 Transp wind dir.SW S S SW SW SW SW S S S SW SW Transp wind spd.16 14 15 16 15 16 15 15 14 13 12 13 SDspl kt-ft/100035 11 10 11 10 10 9 9 8 7 7 7 .TUESDAY... Sky/weather.........Sunny (5-15 percent). Max temperature.....Around 74. Min humidity........30 percent. Wind (20 ft)........Southwest winds around 5 mph early in the morning becoming northwest 5 to 10 mph by midday. Mixing height.......5300 ft AGL. Transport winds.....West 12 to 13 mph shifting to the northwest 6 to 9 mph in the late morning and afternoon. Smoke dispersal.....Poor (5300 knot-ft) early in the morning increasing to good (42600 knot-ft) in the afternoon. TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........19 17 13 11 8 7 6 5 4 4 5 6 Weather cov..... Weather type.... Tstm cov........ Temp............42 42 47 53 58 62 66 70 72 72 74 72 RH..............70 76 71 61 55 50 43 39 35 34 30 33 20 FT wind dir..SW SW SW W W W W NW NW NW NW NW 20 FT wind spd..5 4 4 5 5 5 4 3 4 5 6 5 20 FT wind gust.12 11 11 11 9 8 7 7 8 8 8 8 Mix hgt (kft)...0.6 0.5 0.7 1.1 1.5 2.1 2.3 3.2 4.2 4.9 5.3 5.0 Transp wind dir.SW SW W W NW NW NW NW NW NW NW NW Transp wind spd.13 12 12 13 8 7 6 7 7 9 9 9 SDspl kt-ft/10006 5 7 12 11 12 11 19 25 39 43 40 $$ Forecaster...Kieckbusch Requested by...Jake koebernik Type of request...PRESCRIBED .TAG 2610962.0/GRB .DELDT 04/20/26 .FormatterVersion 2.0.0 .EMAIL jacob.koebernik@wisconsin.gov