FNUS73 KGRR 111227 FWSGRR FIRE WEATHER PLANNING FORECAST FOR SWITCH GRASS...MI DNR NATIONAL WEATHER SERVICE GRAND RAPIDS MI 827 AM EDT TUE OCT 11 2011 FORECAST IS BASED ON IGNITION TIME OF 1300 EDT ON OCTOBER 11. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...MORE DRY WEATHER CAN BE EXPECTED FOR LOWER MICHIGAN FROM TODAY THROUGH WEDNESDAY EVENING AS A RESIDUAL AREA OF HIGH PRESSURE HOLDS ON ACROSS THE STATE. A SYSTEM WILL APPROACH FROM THE WEST OVERNIGHT WEDNESDAY NIGHT AND MOVE ACROSS THE AREA ON THURSDAY AND THURSDAY NIGHT. THIS WILL BRING A GOOD CHANCE OF RAIN TO THE AREA. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). TEMPERATURE.........74 AT IGNITION...MAX 79. RH..................42 PERCENT AT IGNITION...MIN 35 PERCENT. WIND (20 FT)........WINDS SOUTHEAST AT 10 MPH AT IGNITION...OTHERWISE LIGHT WINDS BECOMING SOUTHEAST 6 TO 11 MPH. MIXING WINDS........SOUTH 6 TO 12 MPH SHIFTING TO THE SOUTHEAST 10 TO 18 MPH IN THE AFTERNOON. MIXING HEIGHT.......600-1100 FT AGL INCREASING TO 3100 FT AGL FROM LATE MORNING THROUGH EARLY AFTERNOON...THEN INCREASING TO 5300 FT AGL AT IGNITION...OTHERWISE 6800-7300 FT AGL THROUGH MID AFTERNOON DECREASING TO 3800 FT AGL LATE IN THE DAY DECREASING TO 1800 FT AGL. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH AT IGNITION...MAX 6. SMOKE DISPERSAL.....500 (GOOD) INCREASING TO 1100 (EXCELLENT) THROUGH MID AFTERNOON...DECREASING TO 500 (GOOD) LATE IN THE DAY. TIME (EDT) 1 PM 3 PM 5 PM 7 PM SKY (%).........31 34 44 54 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............74 79 77 70 RH..............42 36 39 47 20 FT WIND......SE 8 SE 9 SE 8 SE 7 20 FT GUST......15 15 15 15 HAINES INDEX....5 5 6 5 $$ FORECASTER...OSTUNO REQUESTED BY...RANDY MCKENZIE TYPE OF REQUEST...PRESCRIBED .TAG 20111011.SWITC.01/GRR