FNUS73 KAPX 201142 FWSAPX Spot Forecast for River Road 16 Rx...Forest Service National Weather Service Gaylord MI 742 AM EDT Mon Apr 20 2026 Forecast is based on ignition time of 0900 EDT on April 20. If conditions become unrepresentative... contact the National Weather Service. Please contact our office at (989)732-9306, if you have questions or concerns with this forecast. .DISCUSSION... Sunny skies this afternoon with dry air persisting near the surface. Near critical min RHs during the mid afternoon hours today (medium chances for min RHS right at critical or 25%). A lake breezy could push through later this afternoon and begin to increase RHs. Unstable conditions up to 5 to 6 kft this afternoon. Winds generally northeast this morning, becoming southeast during the afternoon at 5 to 10 mph with occasional gusts of 10 to 15 mph. Gusts will become more frequent this evening a dry system approaches from the west. .REST OF TODAY... Sky/weather.........Mostly sunny (25-35 percent). Chance of thunder...0 percent. Max temperature.....Around 44. Min humidity........26 percent. 20-foot winds.......Northeast winds 5 to 6 mph shifting to the southeast 6 to 7 mph in the afternoon. Transport winds.....Northwest 10 to 14 mph shifting to the west around 12 mph late in the afternoon. Mixing height.......4700-6600 ft AGL. Ventilation index...Good to excellent (514.0-765.0). TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........13 19 33 35 47 39 43 46 34 Weather cov..... Weather type.... Tstm cov........ Chc of thdr (%).0 0 0 0 0 0 0 0 0 Temp............28 31 35 37 40 41 43 43 43 RH..............55 47 36 34 29 28 26 27 30 20 ft wind dir..NE NE NE E E SE SE SE SE 20 ft wind spd..5 5 5 6 6 6 7 7 7 20 ft wind gust.0 0 10 10 10 10 13 13 13 Mix hgt (kft)...4.7 5.2 5.7 6.1 6.4 6.6 6.5 6.3 5.9 Transp wind dir.NW NW NW W NW W W W W Transp wind spd.13 13 14 14 14 12 12 10 12 Vrate kt-ft.....514 572 690 737 765 657 651 565 594 Ventrate Cat....GD GD EXL EXL EXL EXL EXL GD GD .TONIGHT... Sky/weather.........Partly cloudy (35-45 percent) then becoming mostly cloudy (65-75 percent). Chance of thunder...1 percent. Min temperature.....Around 31. Max humidity........69 percent. 20-foot winds.......South winds 7 to 10 mph. Transport winds.....Southwest 10 to 14 mph increasing to 12 to 17 mph overnight. Mixing height.......5200 ft AGL decreasing to 400-600 ft AGL. Ventilation index...Fair to excellent (285.0-627.0) decreasing to poor (49.0) early in the evening. TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM Sky (%).........35 40 35 40 37 54 70 77 82 79 81 75 Weather cov..... Weather type.... Tstm cov........ Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............44 41 39 35 34 33 32 33 33 34 34 35 RH..............30 36 42 56 58 63 66 66 66 66 66 64 20 ft wind dir..S S S S S S SW SW SW S S S 20 ft wind spd..7 7 7 7 7 7 8 8 8 10 10 10 20 ft wind gust.13 13 13 14 14 14 15 15 15 20 20 20 Mix hgt (kft)...5.2 2.6 0.8 0.7 0.5 0.5 0.5 0.6 0.5 0.5 0.6 0.6 Transp wind dir.W SW S S S S S SW SW SW SW SW Transp wind spd.14 13 10 12 13 13 13 14 14 15 16 17 Vrate kt-ft.....627 285 69 50 49 55 55 66 60 68 85 87Ventrate Cat....EXL FR PR PR PR PR PR PR PR PR PR PR .TUESDAY... Sky/weather.........Mostly cloudy (70-80 percent) then becoming mostly sunny (30-40 percent). Chance of thunder...1 percent. Max temperature.....Around 64. Min humidity........49 percent. 20-foot winds.......Southwest winds 8 to 12 mph. Transport winds.....Southwest 15 to 22 mph. Mixing height.......600-2000 ft AGL increasing to 4400-4700 ft AGL. Ventilation index...Poor to good (91.0-532.0) increasing to good to excellent (574.0-623.0) late in the afternoon. TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM Sky (%).........82 80 75 68 49 30 28 25 23 26 29 32 Weather cov..... Weather type.... Tstm cov........ Chc of thdr (%).0 0 0 0 0 0 0 0 0 0 0 0 Temp............35 35 37 41 44 48 53 57 60 62 63 62 RH..............66 69 67 62 60 58 54 51 49 50 50 52 20 ft wind dir..SW SW SW SW SW SW SW SW SW SW SW SW 20 ft wind spd..12 12 12 12 12 12 12 12 12 9 9 9 20 ft wind gust.21 21 21 21 21 21 20 20 20 15 15 15 Mix hgt (kft)...0.6 0.7 0.7 1.4 1.8 2.0 2.6 3.4 4.1 4.6 4.7 4.4 Transp wind dir.SW SW SW SW SW SW SW W W W W W Transp wind spd.17 20 22 22 21 20 18 16 15 15 15 15 Vrate kt-ft.....91 116 140 274 320 335 411 484 532 591 623 574 Ventrate Cat....PR PR FR FR GD GD GD GD GD GD EXL GD $$ Forecaster...ELD Requested by...Jake Reed Type of request...PRESCRIBED .TAG 2610820.0/APX .DELDT 04/20/26 .FormatterVersion 2.0.0 .EMAIL jake.reed@usda.gov,samuel.bowen@usda.gov