730 FNUS73 KLOT 281321 FWSLOT Spot Forecast for Midewin Rx 2/28/26...USFS National Weather Service Chicago IL 721 AM CST Sat Feb 28 2026 Forecast is based on ignition time of 0700 CST on February 28. If conditions become unrepresentative, contact the National Weather Service. Please contact our office at (815) 834-0666 if you have questions or concerns with this forecast. .DISCUSSION... Clouds will continue to thicken this morning. High temperatures near 40 degrees will hold maximum mixing heights to around 2000 feet this afternoon and lead to minimum relative humidity values between 40 and 45 percent. Relatively light winds around 5 mph this morning will become decidedly north to northeasterly, with sustained speeds increasing to 10 to 15 mph and gusts occasionally as high as 20 mph by late afternoon. A snowflake or two cannot be ruled out today (only a 5 to 10% chance). Tomorrow will be similar today with relatively cool conditions, mostly cloudy skies, and north to northeasterly winds of 10 to 15 mph. While high temperatures will struggle to climb past the freezing mark, a renewed push of dry air will maintain minimum afternoon relative humidity values around 45 percent. No precipitation is expected tomorrow. .TODAY... Sky/weather.........Increasing cloudiness. Temperature.........Around 32 at ignition warming to a high of 40. RH..................62 percent at ignition...Min between 40 and 45 percent. Wind (20 ft)........North at 5 mph becoming northeast 10 to 15 mph with occasional gusts to 20 mph late this afternoon. Chance of pcpn......10 percent mainly this afternoon. Transport winds.....Northeast 5 to 10 mph increasing to 15 to 20 mph late in the afternoon. Mixing height.......1500 ft AGL at ignition...otherwise 2200 ft AGL. Smoke dispersal.....Fair /14700 knot-ft/ at ignition. Max...fair /28100 knot-ft/. TIME (CST) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........53 62 71 76 82 88 89 90 91 86 80 Weather cov..... Weather type.... Temp............30 32 36 38 40 40 40 39 38 37 35 RH..............75 66 55 46 43 43 45 49 52 53 58 20 FT wind dir..000 020 030 040 050 050 060 060 060 060 060 20 FT wind spd..7 9 9 9 9 9 12 13 14 14 13 20 FT wind gust.13 14 14 14 14 14 16 20 21 21 21 Mix hgt (kft)...0.9 1.5 1.7 1.9 2.1 2.2 2.1 2.1 2.1 2.1 2.0 Transp wind dir.000 020 030 040 050 060 060 060 060 060 060 Transp wind spd.9 12 10 9 8 12 12 15 16 15 16 Chc of pcpn (%).0 0 0 0 10 10 10 10 10 10 10 Vrate kt-ft/1K..8 15 16 16 15 22 22 27 29 27 28 .TONIGHT... Sky/weather.........Mostly cloudy. Temperature.........Min 25. RH..................Max 84 percent. Wind (20 ft)........Northeast winds 10 to 15 mph shifting to the north around 10 mph overnight. Chance of pcpn......10 percent. Transport winds.....North 15 to 20 mph. Mixing height.......1800 ft AGL. Smoke dispersal.....Good (38000 knot-ft) early in the evening decreasing to fair (29100 knot-ft) late in the night. TIME (CST) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........75 72 68 65 65 64 64 65 66 66 60 54 Weather cov..... Weather type.... Temp............33 31 30 30 29 28 28 27 27 26 25 25 RH..............62 68 74 79 81 83 84 83 82 82 81 81 20 FT wind dir..050 050 040 040 030 030 020 020 010 000 010 000 20 FT wind spd..13 13 13 13 13 12 12 9 9 9 10 10 20 FT wind gust.20 21 22 22 22 20 17 17 17 17 17 17 Mix hgt (kft)...1.8 1.8 1.8 1.8 1.9 2.0 2.1 2.3 2.4 2.6 2.6 2.6 Transp wind dir.050 050 050 040 030 010 000 000 000 000 000 000 Transp wind spd.18 20 20 20 20 18 17 16 17 17 17 15 Chc of pcpn (%).10 0 0 0 0 0 0 0 0 0 0 0 Vrate kt-ft/1K..29 31 30 30 32 32 31 32 36 38 38 35 .SUNDAY... Sky/weather.........Mostly cloudy. Temperature.........Max 34. RH..................Min 46 percent. Wind (20 ft)........Northeast winds 10 to 15 mph decreasing to 5 to 10 mph late in the afternoon. Chance of pcpn......0 percent. Transport winds.....North 15 to 20 mph becoming northeast 10 to 15 mph in the afternoon. Mixing height.......3300 ft AGL. Smoke dispersal.....Fair (20200 knot-ft) early in the morning increasing to good (51100 knot-ft) in the afternoon. TIME (CST) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........47 51 57 63 60 56 53 59 64 70 72 75 Weather cov..... Weather type.... Temp............25 25 26 28 30 32 33 34 34 34 33 32 RH..............79 77 73 68 61 56 51 49 47 47 49 52 20 FT wind dir..010 010 020 030 030 030 030 030 040 040 040 050 20 FT wind spd..10 10 12 12 12 12 10 10 9 9 8 8 20 FT wind gust.17 17 17 17 18 16 15 15 14 14 14 14 Mix hgt (kft)...2.6 2.7 3.0 3.2 3.2 3.3 3.3 3.3 3.3 3.2 2.8 2.3 Transp wind dir.000 000 020 030 030 040 040 040 040 050 050 060 Transp wind spd.16 18 18 18 18 16 13 12 10 10 9 10 Chc of pcpn (%).0 0 0 0 0 0 0 0 0 0 0 0 Vrate kt-ft/1K..36 44 49 50 52 46 37 32 29 28 24 20 $$ Forecaster...Borchardt Requested by...Strohmeyer Type of request...PRESCRIBED .TAG 2604306.0/LOT .DELDT 02/28/26 .FormatterVersion 2.0.0