Spot Forecast
Issued by NWS Grand Rapids, MI
Issued by NWS Grand Rapids, MI
250 FNUS73 KGRR 171347 FWSGRR Spot Forecast for Billy Goat Burn...MIDNR National Weather Service Grand Rapids MI 947 AM EDT Fri May 17 2024 Forecast is based on ignition time of 1400 EDT on May 17. 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... Dry conditions continue today with sunny skies. Patchy fog this morning should dissipate though some fog may linger along the lakeshore. Wind will stay light (less than 10 mph) and mainly from the west. Temperatures will peak in the mid to upper 70s inland, while areas near the lakeshore will stay a touch cooler with highs only in the mid 60s. Sufficient sunshine may help lakeshore temps warm into the upper 60s closer to 70. Min RH near 60 percent is expected today, but if afternoon temperatures overperform then expect a lower min RH into the 50 percent range. .REST OF TODAY... Sky/weather.........Mostly sunny (30-40 percent). Temperature.........64 at ignition...Max 65. RH..................60 percent at ignition...Min 58 percent. Wind (20 ft)........Winds west at 6 mph at ignition...otherwise West winds 6 to 7 mph in the afternoon becoming light. Mixing height.......1200 ft AGL at ignition...otherwise 1200 ft AGL. Mixing winds........West 3 to 7 mph. Smoke dispersal.....70 /poor/ at ignition. Max...70 /poor/. Haines Index........5 or moderate potential for large plume dominated fire growth at ignition...max 5. TIME (EDT) 2 PM 4 PM 6 PM 8 PM 10 PM MIDNGT Sky (%).........43 36 29 31 25 27 Weather cov..... Weather type....NONE NONE NONE NONE NONE NONE Tstm cov........ Temp............64 63 62 60 55 53 RH..............60 60 62 64 72 74 20 ft wind......W 6 W 7 NW 6 NW 2 NW 1 S 1 20 ft wind gust.8 10 8 5 2 2 Mix hgt (ft)....1200 800 800 400 400 400 Mixing wind.....W 6 W 6 W 6 NW 5 N 2 SE 3 Haines index....5 5 5 5 5 5 Smoke disprsl...70 50 50 20 10 10 .TONIGHT... Sky/weather.........Partly cloudy (25-35 percent). Patchy fog toward daybreak. Temperature.........Min 48. RH..................Max 93 percent. Wind (20 ft)........Light winds. Mixing height.......300 ft AGL. Mixing winds........Northwest 2 to 5 mph shifting to the north around 2 mph in the evening, then shifting to the southeast 2 to 6 mph late at night shifting to the south around 6 mph toward daybreak. Smoke dispersal.....10 (poor). Haines Index........5 or moderate potential for large plume dominated fire growth. .SATURDAY... Sky/weather.........Sunny (15-25 percent). Patchy fog early in the morning. Temperature.........Max 72. RH..................Min 51 percent. Wind (20 ft)........Light winds becoming south 5 to 6 mph through early afternoon, then shifting to the southwest 5 to 7 mph in the afternoon. Mixing height.......800 ft AGL. Mixing winds........South 7 to 12 mph. Smoke dispersal.....20 (poor). Haines Index........5 or moderate potential for large plume dominated fire growth. $$ Forecaster...Thielke Requested by...Tom Barnes Type of request...PRESCRIBED .TAG 2414508.0/GRR .DELDT 05/17/24 .FormatterVersion 2.0.0 .EMAIL barnest2@michigan.gov