FNUS73 KGRR 151116 FWSGRR FIRE WEATHER PLANNING FORECAST FOR POWERLINE...USFS NATIONAL WEATHER SERVICE GRAND RAPIDS MI 716 AM EDT FRI JUN 15 2012 FORECAST IS BASED ON IGNITION TIME OF 1400 EDT ON JUNE 15. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... LOWER MICHIGAN WILL SEE TEMPERATURES BECOME HOT THROUGH SATURDAY WITH PLENTY OF SUNSHINE AND A SOUTHERLY WIND BRINGING IN MUCH WARMER TEMPERATURES. TEMPERATURES WILL REACH THE MID 80S AWAY FROM LAKE MICHIGAN. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). TEMPERATURE.........83 AT IGNITION...MAX 85. RH..................38 PERCENT AT IGNITION...MIN 36 PERCENT. WIND (20 FT)........WINDS SOUTH AT 17 MPH AT IGNITION...OTHERWISE SOUTHWEST WINDS 9 TO 14 MPH. MIXING WINDS........SOUTHWEST 9 TO 16 MPH. MIXING HEIGHT.......1100-1600 FT AGL INCREASING TO 5700 FT AGL AT IGNITION...OTHERWISE 5400-5900 FT AGL...THEN DECREASING TO 3600 FT AGL IN THE EVENING. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH AT IGNITION...MAX 6. SMOKE DISPERSAL.....0-400 (POOR TO GOOD) INCREASING TO 600-1000 (EXCELLENT TO EXCELLENT)...THEN DECREASING TO 500 (GOOD) IN THE EVENING. TIME (EDT) 2 PM 4 PM 6 PM SKY (%).........35 35 36 WEATHER COV..... WEATHER TYPE....NONE NONE NONE TEMP............83 84 83 RH..............38 36 38 20 FT WIND......S 17 SW 17 SW 15 20 FT GUST......20 20 20 HAINES INDEX....5 6 6 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT). TEMPERATURE.........MIN 59. RH..................MAX 84 PERCENT. WIND (20 FT)........SOUTH WINDS 6 TO 11 MPH. MIXING WINDS........SOUTH 5 TO 14 MPH. MIXING HEIGHT.......2000-2500 FT AGL DECREASING TO 0-300 FT AGL AFTER MIDNIGHT. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. SMOKE DISPERSAL.....0-300 (POOR TO GOOD). .SATURDAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT). TEMPERATURE.........MAX 90. RH..................MIN 38 PERCENT. WIND (20 FT)........SOUTH WINDS 6 TO 11 MPH. MIXING WINDS........SOUTH 8 TO 17 MPH INCREASING TO 17 TO 20 MPH LATE IN THE DAY. MIXING HEIGHT.......1600-2100 FT AGL INCREASING TO 6900-7400 FT AGL...THEN DECREASING TO 4400-4900 FT AGL LATE IN THE DAY. HAINES INDEX........4 TO 6 OR OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. SMOKE DISPERSAL.....0-400 (POOR TO GOOD) INCREASING TO 700-1100 (EXCELLENT TO EXCELLENT) FROM LATE MORNING THROUGH EARLY AFTERNOON...THEN INCREASING TO 900-1300 (EXCELLENT TO EXCELLENT) IN THE AFTERNOON DECREASING TO 600 (EXCELLENT) IN THE EVENING. $$ FORECASTER...MJS REQUESTED BY...BOB LITTLE TYPE OF REQUEST...PRESCRIBED .TAG 20120615.POWER.01/GRR