FNUS73 KGRR 050924 FWSGRR Spot Forecast for Chase 6...USFS National Weather Service Grand Rapids MI 524 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 upper 20s. Wednesday conditions will be similar, but relative humidity values may remain above 30 percent. .REST OF TODAY... Sky/weather.........Mostly sunny (40-50 percent). Temperature.........48 at ignition...Max 55. RH..................47 percent at ignition...Min 29 percent. Wind (20 ft)........Winds west at 7 mph at ignition...otherwise West winds 7 to 10 mph. Gusts up to 22 mph late in the morning. Mixing height.......4000 ft AGL at ignition...otherwise 6300 ft AGL. Mixing winds........West 18 to 23 mph. Smoke dispersal.....740 /excellent/ at ignition. Max...1440 /excellent/. TIME (EDT) 10 AM NOON 2 PM 4 PM 6 PM 8 PM Sky (%).........52 31 54 56 48 56 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Temp............48 52 54 55 54 50 RH..............47 35 31 29 31 36 20 ft wind......W 7 W 9 W 10 W 9 W 8 NW 5 20 ft wind gust.17 21 22 21 18 13 Mix hgt (ft)....4000 5700 6200 6100 6100 2300 Mixing wind.....W 18 W 22 W 23 W 22 W 21 W 13 Smoke disprsl...740 1250 1420 1340 1270 290 .TONIGHT... Sky/weather.........Partly cloudy (45-55 percent). Areas of frost after 3 am. Temperature.........Min 33. RH..................Max 78 percent. Wind (20 ft)........Northwest winds 5 to 8 mph early in the evening becoming light. Mixing height.......400 ft AGL. Mixing winds........West 13 to 21 mph decreasing to 8 to 10 mph in the late evening and overnight, then shifting to the northeast around 7 mph after 3 am. Smoke dispersal.....1270 (excellent) early in the evening decreasing to 290 (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 55. RH..................Min 31 percent. Wind (20 ft)........Light winds becoming northwest 5 to 9 mph in the late morning and afternoon. Mixing height.......6900 ft AGL. Mixing winds........Northeast 7 to 8 mph shifting to the northwest 7 to 10 mph in the late morning and afternoon. Smoke dispersal.....30 (poor) early in the morning increasing to 660 (excellent) in the afternoon. $$ Forecaster...Hansen Requested by...Dean Chambers Type of request...PRESCRIBED .TAG 2612668.0/GRR .DELDT 05/05/26 .FormatterVersion 2.0.0 .EMAIL dean.chambers@usda.gov