FNUS73 KDMX 181714 FWSDMX SPOT FORECAST FOR BACK 40...IOWA DNR-USFWS NATIONAL WEATHER SERVICE DES MOINES IA 1214 PM CDT FRI MAR 18 2011 FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON MARCH 19. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. PLEASE REMEMBER TO SUBMIT A MID BURN OBSERVATION TO THE NATIONAL WEATHER SERVICE FOR EACH PRESCRIBED BURN. .DISCUSSION... HIGH PRESSURE WILL BUILD INTO THE STATE TONIGHT INTO SATURDAY MORNING AND WILL PROVIDE PARTLY CLOUDY SKIES WITH DRY CONDITIONS AND LIGHT WINDS BY SATURDAY MORNING. AN UPPER LEVEL DISTURBANCE WILL ENTER THE STATE LATE SATURDAY AND BRING CHANCES OF SHOWERS BY THE AFTERNOON. .SATURDAY... SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT) THEN BECOMING MOSTLY CLOUDY (65-75 PERCENT). SLIGHT CHANCE OF RAIN SHOWERS IN THE AFTERNOON. TEMPERATURE.........40 AT IGNITION...MAX 52. RH..................73 PERCENT AT IGNITION...MIN 54 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTHEAST 6 TO 12 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1900 FT AGL INCREASING TO 3500 FT AGL IN THE AFTERNOON. MIXING WINDS........SOUTHEAST 8 TO 16 MPH INCREASING TO AROUND 32 MPH. SMOKE DISPERSAL.....GOOD (73500 KNOT-FT) INCREASING TO GOOD (87100 KNOT-FT) LATE IN THE AFTERNOON. TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........45 52 55 57 61 66 70 74 WEATHER COV..... SCH SCH SCH SCH SCH SCH WEATHER TYPE.... RW RW RW RW RW RW TEMP............40 44 46 48 50 51 51 51 RH..............73 65 63 58 56 54 56 56 EYE LVL WND DIR.SE SE SE SE SE SE SE SE EYE LVL WND SPD.7 8 9 9 10 10 9 9 EYE LVL WND GST.15 15 20 20 20 20 20 20 MIX HGT (KFT)...0.8 1.3 1.9 2.4 2.9 3.5 3.3 3.1 MIXNG WIND DIR..SE SE SE SE SE SE SE SE MIXNG WIND SPD..21 24 28 29 29 29 30 32 HAINES INDEX....4 5 5 5 5 5 5 5 .SATURDAY NIGHT... SKY/WEATHER.........MOSTLY CLOUDY (80-90 PERCENT). ISOLATED THUNDERSTORMS IN THE EVENING. CHANCE OF RAIN SHOWERS THROUGH THE NIGHT. CHANCE OF THUNDERSTORMS AFTER MIDNIGHT. TEMPERATURE.........MIN 43. RH..................MAX 93 PERCENT. EYE LEVEL WINDS.....SOUTHEAST WINDS 8 TO 11 MPH. HAINES INDEX........5 OR MODERATE POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2900 FT AGL. MIXING WINDS........SOUTHEAST 24 TO 32 MPH BECOMING SOUTH AROUND 18 MPH. SMOKE DISPERSAL.....GOOD (81500 KNOT-FT). TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........76 83 91 98 96 94 WEATHER COV.....CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR TEMP............50 48 47 46 45 44 RH..............58 65 73 79 86 89 EYE LEVEL WIND..SE 9 SE 8 SE 8 SE 7 SE 7 SE 6 EYE LEVEL WIND..20 15 15 15 15 15 MIX HGT (FT)....2900 1900 1400 1500 1800 1800 MIXNG WIND......SE 32 SE 24 SE 23 S 29 S 28 S 22 HAINES INDEX....5 4 3 2 2 2 .SUNDAY... SKY/WEATHER.........CLOUDY (85-95 PERCENT). CHANCE OF RAIN SHOWERS. TEMPERATURE.........MAX 63. RH..................MIN 69 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 8 TO 10 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2600 FT AGL. MIXING WINDS........SOUTH 14 TO 21 MPH. SMOKE DISPERSAL.....MARGINAL (35800 KNOT-FT). TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........93 90 86 84 WEATHER COV.....CHANCE CHANCE CHANCE CHANCE WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR TEMP............44 51 58 62 RH..............89 80 69 62 EYE LEVEL WIND..SE 6G15 S 7G15 S 8G15 S 7G15 MIX HGT (FT)....1300 1900 1900 2600 MIXNG WIND......S 15 S 15 S 14 S 16 HAINES INDEX....2 2 2 3 $$ FORECASTER...PODRAZIK REQUESTED BY...RYAN TYPE OF REQUEST...PRESCRIBED .TAG 20110319.BACK4.01/DMX