FNUS73 KMPX 081408 FWSMPX SPOT FORECAST FOR SMSC PRAIRIE BURNS...SMSC NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 908 AM CDT THU APR 8 2010 FORECAST IS BASED ON IGNITION TIME OF 1300 CDT ON APRIL 08. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH PRESSURE WILL DOMINATE THE BURN AREA TODAY...BRINGING WITH IT A CONTINUED FEED OF DRY AIR. THE HIGH SINKING IN WILL ALSO LEAD TO LIGHTER NORTH WINDS TODAY AROUND 10 MPH WITH GUSTS STAYING LESS THAN 20 MPH. CLOUD COVER CURRENTLY AT THE BURN SITE WILL IMPACT THE AREA THIS MORNING...BUT SKIES WILL BE CLEARING OUT BY THIS AFTERNOON. IT WILL BE A COOL DAY AGAIN TODAY...WITH HIGHS TOPPING OUT IN THE LOWER 50S. HOWEVER...THE VERY DRY AIRMASS IN PLACE WILL ALLOW HUMIDITIES THIS AFTERNOON TO FALL TO AROUND 25 PERCENT. .TODAY... SKY/WEATHER.........PARTLY SUNNY. TEMPERATURE.........47 AT IGNITION...MAX 52. MIN HUMIDITY........34 PERCENT AT IGNITION...MIN 26 PERCENT. WIND (20 FT)........WINDS NORTH AT 11 MPH AT IGNITION...OTHERWISE NORTHWEST WINDS 5 TO 8 MPH IN THE MORNING ...THEN BECOMING NORTH 7 TO 12 MPH. HAINES INDEX........2 OR VERY LOW AT IGNITION...MAX 4. SMOKE DISPERSAL.....FAIR TO GOOD (14500-59000) INCREASING TO EXCELLENT (85500-96500) IN THE LATE MORNING AND AFTERNOON. MIXING HEIGHT.......1700-3100 FT AGL INCREASING TO 6500-7100 FT AGL. MIXING WINDS........NORTHWEST 12 TO 20 MPH. TIME (CDT) 11 AM 1 PM 3 PM 5 PM 7 PM 9 PM SKY (%).........PCLDY PCLDY PCLDY MCLEAR CLEAR MCLEAR WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TEMP............43 47 50 52 50 46 RH..............40 34 30 26 28 37 20 FT WIND......N 11 N 10 N 10 N 9 N 7 NE 3 20 FT WIND GUST.20 15 15 15 10 5 HAINES INDEX....2 2 3 4 4 4 $$ FORECASTER...WFO MPX REQUESTED BY...SHAWN KELLEY TYPE OF REQUEST...PRESCRIBED .TAG 20100408.SMSCP.01/MPX