FNUS73 KGRR 070931 FWSGRR Spot Forecast for Shooting Range RX...USFS National Weather Service Grand Rapids MI 531 AM EDT Tue May 7 2024 Forecast is based on ignition time of 0800 EDT on May 07. 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... Rain is likely to hold off until at least 1 PM. Winds will be from the southeast this morning with mixing gradually improving. The chance of rain or a thunderstorm increases between 1 and 3 PM. On and off showers and thunderstorms are then likely through the evening. .TODAY... Sky/weather.........Mostly sunny (35-45 percent) then becoming cloudy (85-95 percent). Rain showers and chance of thunderstorms in the afternoon. Temperature.........51 at ignition...Max 70. RH..................57 percent at ignition...Min 41 percent. Wind (20 ft)........Winds southeast at 9 mph at ignition...otherwise Southeast winds 9 to 15 mph. Gusty and erratic winds expected near thunderstorms late in the day. Mixing height.......500 ft AGL at ignition...otherwise 3400 ft AGL. Mixing winds........Southeast 14 to 22 mph increasing to 17 to 26 mph. Smoke dispersal.....70 /poor/ at ignition. Max...890 /excellent/. Haines Index........3 or very low potential for large plume dominated fire growth at ignition...max 3. TIME (EDT) 8 AM 10 AM NOON 2 PM 4 PM 6 PM Sky (%).........17 39 67 92 92 88 Weather cov..... LIKELY DEFNTE LIKELY Weather type....NONE NONE NONE RNSHWR RNSHWR RNSHWR Tstm cov........ CHANCE Temp............51 60 67 69 63 63 RH..............57 44 42 49 75 75 20 ft wind......SE 9 SE 13 SE 15 SE 15 SE 14 SE 13 20 ft wind gust.18 21 24 25 24 24 Mix hgt (ft)....500 1600 2800 3400 1900 1400 Mixing wind.....SE 14 SE 20 SE 24 SE 26 SE 24 SE 21 Haines index....3 3 3 3 3 3 Smoke disprsl...70 320 680 890 470 300 .TONIGHT... Sky/weather.........Mostly cloudy (70-80 percent). Rain showers likely and chance of thunderstorms in the evening. Temperature.........Min 50. RH..................Max 96 percent. Wind (20 ft)........Southeast winds 7 to 10 mph with gusts to around 21 mph shifting to the southwest around 7 mph toward daybreak. Gusty and erratic winds expected near thunderstorms in the evening. Gusty and erratic winds expected near thunderstorms through about 2 am. Mixing height.......500 ft AGL. Mixing winds........South 9 to 16 mph shifting to the west 9 to 12 mph after midnight. Smoke dispersal.....190 (fair) early in the evening decreasing to 40 (poor) late in the night. Haines Index........3 or very low potential for large plume dominated fire growth. .WEDNESDAY... Sky/weather.........Mostly sunny (40-50 percent). Temperature.........Max 67. RH..................Min 54 percent. Wind (20 ft)........West winds 7 to 12 mph shifting to the north around 8 mph in the evening. Mixing height.......3100 ft AGL. Mixing winds........West 10 to 18 mph shifting to the north around 14 mph in the evening. Smoke dispersal.....70 (poor) early in the morning increasing to 580 (good) in the afternoon. Haines Index........4 or low potential for large plume dominated fire growth. $$ Forecaster...Scholten Requested by...Nieland Type of request...PRESCRIBED .TAG 2413297.0/GRR .DELDT 05/07/24 .FormatterVersion 2.0.0 .EMAIL Joseph.Raspotnik@usda.gov