FNUS73 KGRR 291304 FWSGRR FIRE WEATHER PLANNING FORECAST FOR FARM 42 - 45...MI DNR NATIONAL WEATHER SERVICE GRAND RAPIDS MI 904 AM EDT MON APR 29 2013 FORECAST IS BASED ON IGNITION TIME OF 1200 EDT ON APRIL 29. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A WEAKENING COLD FRONT UPSTREAM OVER WISCONSIN AND IOWA WILL PROVIDE A WARM SOUTHERLY FLOW TODAY ACROSS SOUTHWEST LOWER MICHIGAN. A LAKE BREEZE COMPONENT TO THE WIND OFF OF LAKE MICHIGAN IS EXPECTED WHICH WILL TRY TO TURN THE WINDS A BIT MORE SOUTHWESTERLY THIS AFTERNOON. WINDS WILL GENERALLY BE SOUTH TO SOUTHWEST AT 8 TO 15 MPH. MINIMUM RH VALUES WILL DIP INTO THE 40-50 PERCENT RANGE AT PEAK HEATING THIS AFTERNOON. INCREASING MOISTURE WILL BE TRYING TO STREAM NORTH THIS AFTERNOON WHICH WILL TEND TO KEEP RH VALUES UP. SCATTERED SHOWERS AND STORMS ALONG THE FRONT SHOULD STAY WELL NORTH AND WEST OF ALLEGAN COUNTY TODAY. .TODAY... SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT). AREAS OF FOG IN THE MORNING. TEMPERATURE.........64 AT IGNITION...MAX 72. RH..................54 PERCENT AT IGNITION...MIN 45 PERCENT. WIND (20 FT)........WINDS SOUTHWEST AT 8 MPH AT IGNITION...OTHERWISE LIGHT WINDS BECOMING SOUTHWEST AT 8 TO 16 MPH. MIXING WINDS........SOUTHWEST 10 TO 18 MPH. MIXING HEIGHT.......1500 FT AGL AT IGNITION...OTHERWISE 3200-3700 FT AGL DECREASING TO 1500 FT AGL IN THE EVENING. HAINES INDEX........3 OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH AT IGNITION...MAX 4. SMOKE DISPERSAL.....0-400 (POOR TO GOOD). TIME (EDT) NOON 2 PM 4 PM 6 PM SKY (%).........62 58 60 63 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............64 67 71 70 RH..............54 53 46 46 20 FT WIND......SW 9 SW 10 SW 11 S 11 20 FT GUST......10 15 15 15 HAINES INDEX....3 3 4 4 $$ FORECASTER...DUKE REQUESTED BY...LEE OSTERLAND TYPE OF REQUEST...PRESCRIBED .TAG 20130429.FARM4.01/GRR