FNUS73 KBIS 211252 FWSBIS SPOT FORECAST FOR GRASSLAND TRAIL...USFWS NATIONAL WEATHER SERVICE BISMARCK ND 752 AM CDT THU MAY 21 2009 FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON MAY 21. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION...COOL AND DRY HIGH PRESSURE CENTERED OVER MONTANA THIS MORNING WILL MOVE EAST ACROSS NORTH DAKOTA TODAY. WEST TO NORTHWEST WINDS THIS MORNING 5 TO 15 MPH WILL BECOME WEST TO SOUTHWEST THIS AFTERNOON AS THE HIGH TRACKS EASTWARD ACROSS THE REGION. MOSTLY SUNNY SKIES WITH HIGH TEMPERATURES IN THE 60S AND MINIMUM RELATIVE HUMIDITIES FROM 20 TO 30 PERCENT. .TODAY... SKY/WEATHER.........PARTLY SUNNY. PATCHY FROST EARLY IN THE MORNING. TEMPERATURE.........55 AT IGNITION...MAX 64. RH..................35 PERCENT AT IGNITION...MIN 31 PERCENT. WIND (20 FT)........WINDS WEST AT 15 MPH AT IGNITION...OTHERWISE WEST WINDS AROUND 10 MPH INCREASING TO AROUND 15 MPH LATE IN THE MORNING...THEN DECREASING TO AROUND 10 MPH EARLY IN THE AFTERNOON INCREASING TO AROUND 15 MPH LATE IN THE AFTERNOON. HAINES INDEX........4 LOW AT IGNITION...MAX 4. SMOKE DISPERSAL.....VERY GOOD. LAL.................1. CWR.................0 PERCENT. .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY. CHANCE OF RAIN SHOWERS AFTER MIDNIGHT. TEMPERATURE.........MIN 40. RH..................MAX 76 PERCENT. WIND (20 FT)........SOUTHWEST WINDS AROUND 10 MPH SHIFTING TO THE SOUTH IN THE LATE EVENING AND OVERNIGHT. .FRIDAY... SKY/WEATHER.........PARTLY SUNNY. TEMPERATURE.........MAX 66. RH..................MIN 35 PERCENT. WIND (20 FT)........NORTHWEST WINDS AROUND 5 MPH INCREASING TO 15 TO 20 MPH. $$ FORECASTER...ABELING REQUESTED BY...JOE GUARIGLIA TYPE OF REQUEST...PRESCRIBED .TAG 20090521.GRASS.01/BIS