FNUS73 KLOT 261341 FWSLOT SPOT FORECAST FOR GRAVEL RIDGE...USDA FOREST SERVICE NATIONAL WEATHER SERVICE CHICAGO IL 841 AM CDT MON MAR 26 2012 FORECAST IS BASED ON IGNITION TIME OF 1100 CDT ON MARCH 26. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... SURFACE HIGH PRESSURE ACROSS SOUTHEASTERN ONTARIO WILL CONTINUE TO PRODUCE COOLER EAST TO NORTHEAST WINDS TODAY. A BAND OF LIGHT SHOWERS EXTENDING FROM DUBUQUE TO KANKAKEE AT 830 AM CDT WILL CONTINUE TO MOVE SOUTHEAST INTO THE LATE MORNING. BASED ON RADAR TRENDS THE BURN SITE WILL REMAIN ON THE NORTHERN FLANK OF THIS ACTIVITY FOR ANOTHER 1 TO 2 HOURS BEFORE IT SAGS TO THE SOUTH. BEYOND THAT...THERE WILL BE A SLIGHT CHANCE FOR SPRINKLES OR LIGHT RAIN THIS AFTERNOON. AS THE HIGH MOVES EAST ACROSS WESTERN QUEBEC TONIGHT THE WINDS WILL BECOME SOUTHEASTERLY. AN APPROACHING AREA OF LOW PRESSURE FROM THE NORTHERN HIGH PLAINS WILL RESULT IN STRONGER SOUTHERLY WINDS ON TUESDAY. .TODAY... SKY/WEATHER.........MOSTLY CLOUDY. SLIGHT CHANCE OF RAIN SHOWERS IN THE MORNING. TEMPERATURE.........45 AT IGNITION...MAX 52. RH..................55 PERCENT AT IGNITION...MIN 41 PERCENT. WIND (20 FT)........WINDS EAST-NORTHEAST AT 11 MPH AT IGNITION...OTHERWISE EAST WINDS 9 TO 12 MPH. GUSTS UP TO 23 MPH THROUGH EARLY AFTERNOON. CHANCE OF PCPN......50 PERCENT BEFORE 10 AM THEN 20 PERCENT THROUGH AFTERNOON. LAL.................NO TSTMS. MIXING HEIGHT.......1700-2100 FT AGL INCREASING TO 2500 FT AGL AT IGNITION...OTHERWISE 2300-2500 FT AGL LATE IN THE MORNING...THEN INCREASING TO 2600-3000 FT AGL DECREASING TO 2200 FT AGL LATE IN THE AFTERNOON. 1700FT MIXING TEMP..44. TRANSPORT WINDS.....EAST 23 TO 29 MPH. SMOKE DISPERSAL.....FAIR /59600 KNOT-FT/ AT IGNITION. MAX...GOOD /71100 KNOT-FT/. TIME (CDT) 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........90 90 90 87 83 80 77 73 WEATHER COV.....SCH SCH WEATHER TYPE....RW RW TEMP............45 47 50 51 52 52 51 50 RH..............55 49 44 42 41 43 44 46 20FT WIND DIR...070 070 070 070 070 070 070 070 20FT SPEED(MPH).9 9 9 9 8 8 8 7 20FT SPEED(KT)..8 8 8 8 7 7 7 6 20FT GUST(MPH)..22 22 21 20 20 18 17 17 20FT GUST(KT)...19 19 18 17 17 16 15 15 MIX HGT (KFT)...2.5 2.8 3.0 3.0 3.0 3.0 2.6 2.2 TRANSP WIND DIR.060 060 060 060 070 070 070 070 TRANSP WIND SPD.28 28 26 26 25 24 24 23 CWR.............20 20 10 10 10 10 10 10 LAL.............1 1 1 1 1 1 1 1 VRATE KT-FT/100060 66 70 71 69 64 56 45 .TONIGHT... SKY/WEATHER.........MOSTLY CLOUDY. TEMPERATURE.........MIN 39. RH..................MAX 65 PERCENT. WIND (20 FT)........SOUTHEAST WINDS 9 TO 13 MPH. CHANCE OF PCPN......10 PERCENT. LAL.................NO TSTMS. MIXING HEIGHT.......1400-1800 FT AGL DECREASING TO 1000 FT AGL EARLY IN THE EVENING...THEN DECREASING TO 500-800 FT AGL IN THE LATE EVENING AND EARLY MORNING INCREASING TO 1000-1200 FT AGL EARLY IN THE MORNING. TRANSPORT WINDS.....SOUTHEAST 22 TO 31 MPH INCREASING TO AROUND 32 MPH EARLY IN THE MORNING. SMOKE DISPERSAL.....POOR (8100-34700 KNOT-FT). TIME (CDT) 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM 6AM SKY (%).........70 71 73 74 76 77 79 77 75 73 71 68 WEATHER COV..... WEATHER TYPE.... TEMP............48 47 45 44 44 43 42 41 41 40 40 40 RH..............51 53 58 60 60 62 65 65 62 62 59 59 20FT WIND DIR...070 080 090 090 100 120 130 130 130 130 140 140 20FT SPEED(MPH).7 7 7 7 7 8 8 9 9 10 10 10 20FT SPEED(KT)..6 6 6 6 6 7 7 8 8 8 9 9 20FT GUST(MPH)..16 16 16 16 16 17 17 18 20 21 22 23 20FT GUST(KT)...14 14 14 14 14 15 15 16 17 18 19 20 MIX HGT (KFT)...1.8 1.4 1.0 0.5 0.5 0.5 0.5 0.7 0.8 1.0 1.1 1.2 TRANSP WIND DIR.070 080 090 090 100 120 130 130 130 130 140 140 TRANSP WIND SPD.22 22 22 22 23 23 24 26 28 29 31 32 CWR.............10 10 10 10 10 10 10 10 10 10 10 10 LAL.............1 1 1 1 1 1 1 1 1 1 1 1 VRATE KT-FT/100035 25 16 10 8 9 11 15 19 24 28 32 .TUESDAY... SKY/WEATHER.........MOSTLY CLOUDY THEN BECOMING PARTLY CLOUDY THEN BECOMING MOSTLY CLOUDY. TEMPERATURE.........MAX 70. RH..................MIN 39 PERCENT. WIND (20 FT)........SOUTH WINDS 14 TO 16 MPH WITH GUSTS TO AROUND 30 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS IN THE AFTERNOON. CHANCE OF PCPN......20 PERCENT. LAL.................NO TSTMS. MIXING HEIGHT.......1300-1600 FT AGL INCREASING TO 1800-2200 FT AGL IN THE MORNING...THEN INCREASING TO 2400-2800 FT AGL INCREASING TO 3000-3200 FT AGL DECREASING TO 2300 FT AGL DECREASING TO 1300 FT AGL LATE IN THE AFTERNOON. 1700FT MIXING TEMP..59. TRANSPORT WINDS.....SOUTH 33 TO 40 MPH. SMOKE DISPERSAL.....POOR TO VERY GOOD (38200-109300 KNOT-FT). TIME (CDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM 6PM SKY (%).........66 63 59 56 52 48 45 50 55 60 65 70 WEATHER COV..... SCH SCH SCH SCH SCH SCH WEATHER TYPE.... RW RW RW RW RW RW TEMP............40 44 49 54 59 63 65 68 69 69 68 67 RH..............59 53 48 43 40 39 40 40 42 45 51 56 20FT WIND DIR...140 150 150 160 160 170 170 180 180 190 190 200 20FT SPEED(MPH).11 12 12 13 14 14 14 14 13 13 12 12 20FT SPEED(KT)..10 10 10 11 12 12 12 12 11 11 10 10 20FT GUST(MPH)..24 25 26 28 28 29 30 29 28 28 26 25 20FT GUST(KT)...21 22 23 24 24 25 26 25 24 24 23 22 MIX HGT (KFT)...1.3 1.6 1.8 2.1 2.2 2.4 2.5 2.8 3.0 3.2 2.3 1.3 TRANSP WIND DIR.140 150 150 160 160 170 170 180 180 190 190 200 TRANSP WIND SPD.33 36 37 38 39 40 40 40 39 38 37 35 CWR.............10 10 10 10 10 10 20 20 20 20 20 20 LAL.............1 1 1 1 1 1 2 2 2 2 2 2 VRATE KT-FT/100038 47 58 68 76 83 89 101 109 106 79 44 $$ FORECASTER...BARDOU REQUESTED BY...JEFF MARTINA TYPE OF REQUEST...PRESCRIBED .TAG 20120326.GRAVE.01/LOT