FNUS73 KGRR 050919 FWSGRR Spot Forecast for Shooting Range 163...USFS National Weather Service Grand Rapids MI 519 AM EDT Tue May 5 2026 Forecast is based on ignition time of 1000 EDT on May 05. If conditions become unrepresentative, contact the National Weather Service. Please contact our office at (616) 949-5150, if you have questions or concerns with this forecast. .DISCUSSION... Northwest winds pick up this morning into the afternoon with gusts 20 to 30 mph. Relative humidity values will drop into the low 30s. There is a 20 percent chance that relative humidity values could drop into the upper 20s late this afternoon. Similar conditions are expected Wednesday. .REST OF TODAY... Sky/weather.........Mostly sunny (40-50 percent). Temperature.........48 at ignition...Max 55. RH..................49 percent at ignition...Min 32 percent. Wind (20 ft)........Winds west at 6 mph at ignition...otherwise West winds 6 to 8 mph. Mixing height.......4300 ft AGL at ignition...otherwise 6400 ft AGL. Mixing winds........West 21 to 23 mph. Smoke dispersal.....890 /excellent/ at ignition. Max...1380 /excellent/. TIME (EDT) 10 AM NOON 2 PM 4 PM 6 PM 8 PM Sky (%).........33 42 52 46 52 59 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Temp............48 52 53 55 54 50 RH..............49 38 36 32 34 42 20 ft wind......W 6 W 7 W 8 W 7 W 6 W 2 20 ft wind gust.14 16 17 16 14 10 Mix hgt (ft)....4300 5300 5900 6300 6200 2000 Mixing wind.....W 21 W 23 W 23 W 22 W 21 W 9 Smoke disprsl...890 1210 1350 1380 1290 180 .TONIGHT... Sky/weather.........Mostly cloudy (45-55 percent) then becoming partly cloudy (30-40 percent). Areas of frost after 3 am. Temperature.........Min 34. RH..................Max 82 percent. Wind (20 ft)........West winds 5 to 6 mph early in the evening becoming light. Mixing height.......400 ft AGL. Mixing winds........West 17 to 21 mph decreasing to 8 to 9 mph early in the evening, then shifting to the north 6 to 7 mph overnight shifting to the northeast around 7 mph after 3 am. Smoke dispersal.....1290 (excellent) early in the evening decreasing to 180 (fair) late in the night decreasing to 30 (poor) in the late evening and overnight. .WEDNESDAY... Sky/weather.........Mostly sunny (35-45 percent). Areas of frost early in the morning, then widespread frost early in the morning. Areas of frost early in the morning. Temperature.........Max 52. RH..................Min 36 percent. Wind (20 ft)........Light winds becoming northwest 5 to 7 mph late in the morning. Mixing height.......6000 ft AGL. Mixing winds........Northeast 5 to 6 mph shifting to the northwest 7 to 10 mph in the late morning and afternoon. Smoke dispersal.....20 (poor) early in the morning increasing to 640 (excellent) in the afternoon. $$ Forecaster...Hansen Requested by...Dean Chambers Type of request...PRESCRIBED .TAG 2612685.0/GRR .DELDT 05/05/26 .FormatterVersion 2.0.0 .EMAIL dean.chambers@usda.gov