FNUS73 KLOT 271323 FWSLOT SPOT FORECAST FOR ROUTE 66 PRAIRIE...USFS MIDEWIN NATIONAL WEATHER SERVICE CHICAGO IL 823 AM CDT SAT MAR 27 2010 FORECAST IS BASED ON IGNITION TIME OF 1200 CDT ON MARCH 27. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... HIGH CLOUDINESS WILL BE ON THE INCREASE TODAY IN ADVANCE OF A STORM SYSTEM THAT IS LARGELY EXPECTED TO REMAIN SOUTH OF THE REGION. SOME LIGHT RAIN COULD SPREAD AS FAR NORTH AS NORTHERN ILLINOIS LATE TONIGHT INTO SUNDAY. IT APPEARS THAT CLOUD COVER TODAY AND SOUTHEAST WINDS WILL KEEP RELATIVE HUMIDITY SOMEWHAT HIGHER...THOUGH SHOULD WE SEE MORE SUNSHINE THAN EXPECTED SLIGHTLY LOWER RELATIVE HUMIDITY COULD BE EXPECTED. .TODAY... SKY/WEATHER.........PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. TEMPERATURE.........46 AT IGNITION...MAX 53. MIN HUMIDITY........40 PERCENT AT IGNITION...MIN 30-35 PERCENT. WIND (20 FT)........WINDS SOUTHEAST AT 10 MPH AT IGNITION...BECOMING MORE EASTERLY DURING THE LATE AFTERNOON. CHANCE OF PCPN......0 PERCENT. MIXING HEIGHT.......1200-1300 FT AGL IN THE MORNING...INCREASING TO 2300 FT AGL AT IGNITION...INCREASING TO 3000-3200 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....SOUTHEAST 15 TO 20 MPH. SMOKE DISPERSAL.....POOR /34000 KNOT-FT/ AT IGNITION. MAX...FAIR /49700 KNOT-FT/. TIME (CDT) 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........60 61 64 66 69 72 75 WEATHER COV..... WEATHER TYPE.... TEMP............46 29 51 53 53 52 51 RH..............41 38 35 33 34 36 39 20 FT WIND DIR..130 130 130 120 110 100 100 20 FT WIND SPD..10 9 8 8 7 6 6 20 FT WIND GUST.15 15 15 15 15 15 15 MIX HGT (KFT)...2.3 2.7 3.1 3.2 3.0 2.2 1.2 TRANSP WIND DIR.150 160 150 130 120 110 110 TRANSP WIND SPD.18 17 17 17 18 18 18 CWR.............10 10 10 10 10 10 10 VRATE KT-FT/100034 39 46 50 48 36 19 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY. CHANCE OF RAIN AFTER MIDNIGHT. MIN TEMPERATURE.....41. MAX HUMIDITY........86 PERCENT. WIND (20 FT)........NORTHEAST WINDS 6 TO 8 MPH. CHANCE OF PCPN......30 PERCENT. MIXING HEIGHT.......100-400 FT AGL. TRANSPORT WINDS.....NORTHEAST 15 TO 18 MPH. SMOKE DISPERSAL.....POOR (1100-5300 KNOT-FT). TIME (CDT) 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM SKY (%).........78 80 83 85 88 90 93 93 93 94 94 94 WEATHER COV..... CHC CHC CHC CHC CHC CHC WEATHER TYPE.... RN RN RN RN RN RN TEMP............50 48 45 43 43 43 44 44 43 43 42 41 RH..............44 51 59 68 72 75 77 79 80 82 84 86 20 FT WIND DIR..100 100 090 090 080 080 070 070 060 050 040 030 20 FT WIND SPD..6 5 5 5 5 5 5 5 5 5 6 6 20 FT WIND GUST.15 15 15 10 10 10 10 10 10 15 15 15 MIX HGT (KFT)...0.3 0.1 0.1 0.3 0.3 0.3 0.3 0.3 0.4 0.3 0.2 0.2 TRANSP WIND DIR.110 100 090 090 080 080 080 070 050 050 040 030 TRANSP WIND SPD.17 16 16 15 15 16 16 16 15 16 16 18 CWR.............10 10 10 10 10 10 50 50 50 50 50 50 VRATE KT-FT/10005 1 1 3 4 4 5 5 5 5 2 1 .SUNDAY... SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY. CHANCE OF RAIN IN THE MORNING. MAX TEMPERATURE.....50. MIN HUMIDITY........53 PERCENT. WIND (20 FT)........NORTHEAST WINDS 9 TO 17 MPH WITH GUSTS TO AROUND 30 MPH SHIFTING TO THE NORTH 14 TO 20 MPH. CHANCE OF PCPN......30 PERCENT. MIXING HEIGHT.......300-700 FT AGL INCREASING TO 1200 FT AGL IN THE MORNING...THEN INCREASING TO 1800-2200 FT AGL LATE IN THE MORNING INCREASING TO 2300 FT AGL EARLY IN THE AFTERNOON INCREASING TO 2800 FT AGL INCREASING TO 3300-3400 FT AGL DECREASING TO 2700 FT AGL DECREASING TO 1700 FT AGL LATE IN THE AFTERNOON. TRANSPORT WINDS.....NORTHEAST 21 TO 30 MPH SHIFTING TO THE NORTH 31 TO 38 MPH IN THE LATE MORNING AND AFTERNOON. SMOKE DISPERSAL.....POOR TO VERY GOOD (5000-101000 KNOT-FT). TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........94 92 90 89 87 85 83 79 74 70 65 61 WEATHER COV.....CHC CHC CHC CHC CHC CHC WEATHER TYPE....RN RN RN RN RN RN TEMP............41 42 44 46 46 47 47 48 50 50 49 47 RH..............86 82 76 71 68 66 63 59 55 53 53 56 20 FT WIND DIR..020 020 030 030 030 030 030 030 020 020 020 020 20 FT WIND SPD..7 9 10 13 14 15 16 16 15 14 13 11 20 FT WIND GUST.15 20 20 25 30 30 30 30 30 30 30 25 MIX HGT (KFT)...0.3 0.7 1.2 1.8 2.0 2.2 2.3 2.8 3.3 3.4 2.7 1.7 TRANSP WIND DIR.020 030 030 030 030 030 030 030 020 020 020 020 TRANSP WIND SPD.21 25 30 35 37 38 38 37 36 35 33 31 CWR.............30 30 30 30 30 30 10 10 10 10 10 10 VRATE KT-FT/10005 18 36 53 63 70 77 91 101 101 79 48 $$ FORECASTER...IZZI REQUESTED BY...BARRY KLECKLER TYPE OF REQUEST...PRESCRIBED .TAG 20100327.ROUTE.01/LOT