FNUS73 KDMX 121450 FWSDMX SPOT FORECAST FOR RATHBUN...US COE NATIONAL WEATHER SERVICE DES MOINES IA 950 AM CDT MON MAR 12 2012 FORECAST IS BASED ON IGNITION TIME OF 1000 CDT ON MARCH 13. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. AN INITIAL OBSERVATION AT IGNITION AND A MID BURN OBSERVATION ARE REQUIRED... PLEASE RELAY THEM TO THE NATIONAL WEATHER SERVICE FOR EACH PRESCRIBED BURN. .DISCUSSION... MOSTLY CLOUDY SKIES WILL GRADUALLY CLEAR THIS AFTERNOON AND EVENING WITH WINDS BECOMING BREEZY SOUTHWEST. MOSTLY SUNNY AND MILD CONDITIONS WILL ARRIVE TUESDAY. EXPECT WINDS TO BECOME BREEZY OUT OF THE SOUTH TO SOUTHEAST DURING THE DAY. RELATIVE HUMIDITY VALUES WILL DROP INTO 30S DURING THE AFTERNOON HOURS TUESDAY. .TODAY... SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) THEN BECOMING MOSTLY SUNNY (30-40 PERCENT). SCATTERED RAIN SHOWERS EARLY IN THE MORNING...THEN SLIGHT CHANCE OF RAIN SHOWERS LATE IN THE MORNING. MAX TEMPERATURE.....AROUND 66. MIN HUMIDITY........52 PERCENT. EYE LEVEL WINDS.....SOUTHWEST WINDS 10 TO 18 MPH. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2200 FT AGL INCREASING TO 4600 FT AGL IN THE LATE MORNING AND AFTERNOON. MIXING WINDS........SOUTHWEST 12 TO 21 MPH INCREASING TO 17 TO 22 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....GOOD (62300 KNOT-FT) INCREASING TO GOOD (71100 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........SOUTHWEST WINDS 10 TO 18 MPH. TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........94 91 85 80 74 68 65 61 52 43 34 25 WEATHER COV.....SCT SCT SCT SCH SCH SCH WEATHER TYPE....RW RW RW RW RW RW TSTM COV........ TEMP............47 47 49 52 55 58 61 63 64 65 64 63 RH..............93 96 96 80 72 67 60 56 54 52 52 54 20 FT WIND DIR..S S S S SW SW SW SW SW SW SW W 20 FT WIND SPD..10 12 13 15 16 17 18 18 17 15 14 12 20 FT WIND GUST.15 15 15 20 25 25 25 25 25 20 20 15 EYE LVL WND DIR.S S S S SW SW SW SW SW SW SW W EYE LVL WND SPD.7 9 9 11 11 12 13 13 12 11 10 9 EYE LVL WND GST.15 15 15 20 25 25 25 25 25 20 20 15 MIX HGT (KFT)...0.4 1.0 1.6 2.2 2.7 3.2 3.7 4.0 4.3 4.6 4.0 3.5 MIXNG WIND DIR..S S SW SW SW SW SW SW SW SW SW SW MIXNG WIND SPD..12 15 18 21 22 22 22 21 18 17 17 18 HAINES INDEX....3 3 3 3 3 4 4 4 4 4 4 4 .TONIGHT... SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT). MAX HUMIDITY........79 PERCENT. EYE LEVEL WINDS.....WEST WINDS 6 TO 9 MPH UNTIL EARLY MORNING BECOMING LIGHT. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........21 11 7 3 4 6 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TSTM COV........ RH..............54 62 69 71 74 74 EYE LEVEL WIND..W 6 W 6 W 5 SW 5 W 5 NW 2 EYE LVL WND GST.10 10 10 10 10 5 .TUESDAY... SKY/WEATHER.........SUNNY (5-15 PERCENT). MAX TEMPERATURE.....AROUND 76. MIN HUMIDITY........35 PERCENT. EYE LEVEL WINDS.....LIGHT WINDS BECOMING SOUTH 8 TO 14 MPH EARLY IN THE MORNING. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000 FT AGL INCREASING TO 3300 FT AGL IN THE AFTERNOON...THEN DECREASING TO 1300 FT AGL LATE IN THE AFTERNOON. MIXING WINDS........EAST 1 TO 10 MPH SHIFTING TO THE SOUTH 10 TO 13 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....MARGINAL (36500 KNOT-FT). WIND (20 FT)........LIGHT WINDS BECOMING SOUTH 8 TO 14 MPH EARLY IN THE MORNING. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........7 9 10 11 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TSTM COV........ TEMP............48 56 67 73 RH..............74 59 42 35 20 FT WIND......E 1 SE 12G15 S 13G15 S 14G20 EYE LEVEL WIND..E 1 SE 9G15 S 9G15 S 10G20 MIX HGT (FT)....300 1000 2500 3300 MIXNG WIND......NE 1 E 10 S 10 S 13 HAINES INDEX....6 6 6 6 $$ FORECASTER...DONAVON REQUESTED BY...JOHN PASA TYPE OF REQUEST...PRESCRIBED .TAG 20120313.RATHB.01/DMX