FNUS73 KGRR 151231 FWSGRR FIRE WEATHER PLANNING FORECAST FOR IDLEWILD UNIT 1...USFS NATIONAL WEATHER SERVICE GRAND RAPIDS MI 831 AM EDT WED MAY 15 2013 FORECAST IS BASED ON IGNITION TIME OF 1200 EDT ON MAY 15. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A COLD FRONT HAS SLIP THROUGH THE AREA THIS MORNING AND THIS WILL RESULT IN GUSTY NORTHWEST WINDS WITH DRY AIR MIXING DOWN. WINDS SHOULD DECREASE AS THE AFTERNOON GOES ON AND HIGH PRESSURE BUILDS IN. HIGH PRESSURE WILL BUILD IN THEN FOR THURSDAY AND FRIDAY. THIS SHOULD ALLOW FOR DRY AND MILD WEATHER FOR THE AREA. THIS COULD CONTINUE INTO SATURDAY. THE THREAT FOR RAIN WILL GRADUALLY INCREASE BEGINNING ON SUNDAY AND INTO MONDAY AS MILD TEMPERATURES REMAIN LIKELY. .TODAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). TEMPERATURE.........69 AT IGNITION...MAX 76. RH..................43 PERCENT AT IGNITION...MIN 29 PERCENT. WIND (20 FT)........WINDS NORTHWEST AT 17 MPH AT IGNITION...OTHERWISE WEST WINDS 10 TO 15 MPH. MIXING WINDS........NORTHWEST 17 TO 25 MPH. MIXING HEIGHT.......3200 FT AGL AT IGNITION...OTHERWISE 4000-4500 FT AGL. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH AT IGNITION...MAX 5. SMOKE DISPERSAL.....100-500 (POOR TO GOOD) INCREASING TO 600-900 (EXCELLENT). TIME (EDT) NOON 2 PM 4 PM 6 PM SKY (%).........10 9 7 5 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............69 74 75 73 RH..............43 33 31 33 20 FT WIND......NW 17 NW 18 NW 17 W 15 20 FT GUST......25 25 25 20 HAINES INDEX....4 5 5 5 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). TEMPERATURE.........MIN 43. RH..................MAX 100 PERCENT. WIND (20 FT)........WEST WINDS 6 TO 11 MPH. MIXING WINDS........SOUTHWEST 7 TO 16 MPH SHIFTING TO THE WEST 5 TO 7 MPH AFTER MIDNIGHT. MIXING HEIGHT.......2200-2700 FT AGL DECREASING TO 0-400 FT AGL AFTER MIDNIGHT. HAINES INDEX........3 TO 5 OR OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. .THURSDAY... SKY/WEATHER.........SUNNY (15-25 PERCENT). TEMPERATURE.........MAX 77. RH..................MIN 23 PERCENT. WIND (20 FT)........NORTH WINDS 6 TO 11 MPH. MIXING WINDS........NORTHWEST 5 TO 13 MPH SHIFTING TO THE NORTH 13 TO 17 MPH IN THE AFTERNOON. MIXING HEIGHT.......3100-3600 FT AGL INCREASING TO 8900-9400 FT AGL...THEN DECREASING TO 6600 FT AGL LATE IN THE DAY DECREASING TO 4600 FT AGL IN THE EVENING. HAINES INDEX........3 TO 5 OR OR VERY LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH TO OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. SMOKE DISPERSAL.....0-300 (POOR TO GOOD) INCREASING TO 700 (EXCELLENT) FROM LATE MORNING THROUGH EARLY AFTERNOON...THEN INCREASING TO 1200-1600 (EXCELLENT) THROUGH MID AFTERNOON DECREASING TO 600-1000 (EXCELLENT) LATE IN THE DAY. $$ FORECASTER...MARINO REQUESTED BY...BOB LITTLE TYPE OF REQUEST...PRESCRIBED .TAG 20130515.IDLEW.01/GRR