Spot Forecast
Issued by NWS Grand Rapids, MI
Issued by NWS Grand Rapids, MI
989 FNUS73 KGRR 050922 FWSGRR Spot Forecast for Barren Plains UNit 5...USFS National Weather Service Grand Rapids MI 522 AM EDT Sun May 5 2024 Forecast is based on ignition time of 0900 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... Clouds will clear out this morning as high pressure starts to build in. Winds could be a little gusty from the NW this morning, but will tend to diminish some this afternoon, while also becoming from the North. High pressure will start to move to the east of the area on Monday, allowing SE winds to start increasing some. .REST OF TODAY... Sky/weather.........Mostly sunny (30-40 percent). Temperature.........50 at ignition...Max 68. RH..................83 percent at ignition...Min 28 percent. Wind (20 ft)........Winds northwest at 9 to 12 mph at ignition... otherwise north winds 6 to 9 mph. Gusts up to 20 mph early in the morning. Mixing height.......2000 ft AGL at ignition...otherwise 5000 ft AGL. Mixing winds........North 15 to 20 mph becoming 10 to 15 mph. Smoke dispersal.....400 /good/ at ignition. Max...540 /good/. Haines Index........5 or moderate potential for large plume dominated fire growth at ignition...max 5. TIME (EDT) 9 AM 11 AM 1 PM 3 PM 5 PM 7 PM Sky (%).........62 39 15 4 4 4 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Temp............50 56 62 66 68 66 RH..............83 62 46 32 28 36 20 ft wind......NW 9 NW 9 N 9 N 8 N 6 NW 7 20 ft wind gust.20 14 12 Mix hgt (ft)....2000 2700 3800 4600 5000 4000 Mixing wind.....N 17 N 16 N 14 N 12 N 10 N 10 Haines index....5 5 5 5 5 5 Smoke disprsl...400 440 530 530 500 420 .TONIGHT... Sky/weather.........Mostly clear (0-10 percent). Temperature.........Min 42. RH..................Max 100 percent. Wind (20 ft)........Northwest winds 5 to 8 mph in the evening becoming light. Mixing height.......100 ft AGL. Mixing winds........North 7 to 9 mph shifting to the east around 8 mph early in the morning. Smoke dispersal.....160 (fair) early in the evening decreasing to 20 (poor) late in the night. Haines Index........5 or moderate potential for large plume dominated fire growth. .MONDAY... Sky/weather.........Sunny (5-15 percent). Temperature.........Max 72. RH..................Min 28 percent. Wind (20 ft)........Southeast winds 6 to 8 mph. Mixing height.......6000 ft AGL. Mixing winds........Southeast 8 to 10 mph. Smoke dispersal.....40 (poor) early in the morning increasing to 600 (excellent) in the afternoon. Haines Index........5 or moderate potential for large plume dominated fire growth. $$ Forecaster...Jeruzal Requested by...Nieland Type of request...PRESCRIBED .TAG 2413128.0/GRR .DELDT 05/05/24 .FormatterVersion 2.0.0 .EMAIL Jeff.nieland@usda.gov