FNUS73 KDMX 131310 FWSDMX SPOT FORECAST FOR ORBWEAVER...U.S. FISH AND WILDLIFE SERVICE NATIONAL WEATHER SERVICE DES MOINES IA 810 AM CDT MON MAY 13 2013 FORECAST IS BASED ON IGNITION TIME OF 1130 CDT ON MAY 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... HIGH PRESSURE WILL EXIT THE REGION TODAY ALLOWING WARMER TEMPERATURES TO SURGE INTO IOWA ALONG WITH INCREASING SOUTHERLY WINDS. THIS WILL ELEVATE THE FIRE DANGER LATER TODAY AS RELATIVE HUMIDITIES REMAIN LOW. .TODAY... SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). MAX TEMPERATURE.....AROUND 73. MIN HUMIDITY........34 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 5 TO 13 MPH INCREASING TO 15 TO 17 MPH IN THE AFTERNOON. HAINES INDEX........4 OR LOW POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......1700 FT AGL INCREASING TO 5200 FT AGL. MIXING WINDS........SOUTH 3 TO 9 MPH INCREASING TO 23 TO 28 MPH. SMOKE DISPERSAL.....POOR TO GOOD (800-44200 KNOT-FT) INCREASING TO GOOD TO EXCELLENT (59200-109000 KNOT-FT) IN THE AFTERNOON. WIND (20 FT)........SOUTH WINDS 5 TO 13 MPH INCREASING TO 15 TO 17 MPH IN THE AFTERNOON. TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........40 37 35 38 43 46 47 49 WEATHER COV..... WEATHER TYPE.... TSTM COV........ TEMP............60 64 67 69 71 73 73 72 RH..............44 41 39 37 35 34 35 39 20 FT WIND DIR..S S S S S S S S 20 FT WIND SPD..9 12 13 15 16 17 17 17 20 FT WIND GUST.10 15 15 20 25 25 25 25 EYE LVL WND DIR.S S S S S S S S EYE LVL WND SPD.6 9 9 11 11 12 12 12 EYE LVL WND GST.10 15 15 20 25 25 25 25 MIX HGT (KFT)...2.8 3.8 4.9 5.0 5.1 5.2 4.8 4.4 MIXNG WIND DIR..S S S S S S S S MIXNG WIND SPD..14 13 14 16 20 23 26 28 HAINES INDEX....3 3 3 3 3 3 3 3 .TONIGHT... SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT). MIN TEMPERATURE.....AROUND 55. MAX HUMIDITY........90 PERCENT. EYE LEVEL WINDS.....SOUTHWEST WINDS 7 TO 16 MPH. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......4000 FT AGL DECREASING TO 1500 FT AGL EARLY IN THE EVENING. MIXING WINDS........SOUTH 22 TO 28 MPH BECOMING SOUTHWEST AROUND 5 MPH. SMOKE DISPERSAL.....FAIR TO EXCELLENT (19900-97000 KNOT-FT) DECREASING TO POOR TO POOR (1100-2000 KNOT-FT) IN THE LATE EVENING AND OVERNIGHT. WIND (20 FT)........SOUTHWEST WINDS 7 TO 16 MPH. TIME (CDT) 7 PM 9 PM 11 PM 1 AM 3 AM 5 AM SKY (%).........50 39 31 20 16 12 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE NONE NONE TSTM COV........ TEMP............70 65 61 59 57 56 RH..............44 54 65 72 77 83 20 FT WIND......S 16 S 12 S 9 S 9 SW 8 SW 7 20 FT WIND GUST.25 15 10 10 10 EYE LEVEL WIND..S 11 S 9 S 6 S 6 SW 6 SW 5 EYE LVL WND GST.25 15 10 10 10 MIX HGT (FT)....4000 1500 300 300 300 300 MIXNG WIND......S 28 S 15 S 8 S 9 SW 8 SW 6 HAINES INDEX....3 4 4 5 5 5 .TUESDAY... SKY/WEATHER.........SUNNY (15-25 PERCENT). MAX TEMPERATURE.....AROUND 94. MIN HUMIDITY........25 PERCENT. EYE LEVEL WINDS.....SOUTH WINDS 7 TO 15 MPH SHIFTING TO THE SOUTHWEST 17 TO 18 MPH IN THE AFTERNOON. HAINES INDEX........6 OR HIGH POTENTIAL FOR LARGE PLUME DOMINATED FIRE GROWTH. MIXING HEIGHT.......2000 FT AGL INCREASING TO 5500 FT AGL. MIXING WINDS........SOUTH 5 TO 13 MPH INCREASING TO SOUTHWEST 22 TO 28 MPH. SMOKE DISPERSAL.....POOR TO FAIR (1000-13300 KNOT-FT) INCREASING TO EXCELLENT TO EXCELLENT (76000-132800 KNOT-FT). WIND (20 FT)........SOUTH WINDS 7 TO 15 MPH SHIFTING TO THE SOUTHWEST 17 TO 18 MPH IN THE AFTERNOON. TIME (CDT) 7 AM 10 AM 1 PM 4 PM SKY (%).........8 15 21 28 WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TSTM COV........ TEMP............56 76 89 94 RH..............90 48 30 25 20 FT WIND......SW 7 SW 8G10 S 15G20 SW 18G25 EYE LEVEL WIND..SW 5 SW 6G10 S 11G20 SW 13G25 MIX HGT (FT)....300 900 2000 5500 MIXNG WIND......SW 5 SW 6 S 13 SW 28 HAINES INDEX....6 6 6 6 $$ FORECASTER...VACHALEK REQUESTED BY...JIM KRIZMAN FMS TYPE OF REQUEST...PRESCRIBED .TAG 20130513.ORBWE.01/DMX