FNUS74 KHUN 011342 FWSHUN SPOT FORECAST FOR CHEATHAM KNOB...USFS NATIONAL WEATHER SERVICE HUNTSVILLE AL 742 AM CST MON MAR 1 2010 FORECAST IS BASED ON IGNITION TIME OF 1000 CST ON MARCH 01. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... DRY AND WARM CONDITIONS WILL CONTINUE TODAY WITH RELATIVE HUMIDITIES DROPPING NEAR 45 PERCENT BY THIS AFTERNOON. CLOUDS WILL INCREASE KEEPING TEMPERATURES JUST BELOW 50 AHEAD OF A LOW PRESSURE SYSTEM RIDING ALONG THE GULF COAST THAT WILL BRING RAIN AND POSSIBLY SNOW TONIGHT INTO TUESDAY. THIS WILL RAISE RELATIVE HUMIDITIES AND DROP MIXING HEIGHTS. ALSO...THIS WILL MEAN DISPERSION SHOULD DROP TONIGHT INTO TUESDAY MORNING...AND RISE BY TUESDAY AFTERNOON. .TODAY... SKY/WEATHER.........BECOMING CLOUDY (85-95 PERCENT). MAX TEMPERATURE.....47 TO 49. MIN HUMIDITY........44 TO 46 PERCENT. WIND (20 FT)........BECOMING NORTHEAST 5 TO 7 MPH IN THE AFTERNOON. CWR.................10 PERCENT. MIXING HEIGHT.......1900 FT AGL AT IGNITION TIME INCREASING TO 3600 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....EAST 5 TO 10 MPH SHIFTING TO THE NORTHEAST AROUND 13 MPH LATE IN THE AFTERNOON. TIME (CST) 10 AM NOON 2 PM 4 PM SKY (%).........MCLDY CLOUDY CLOUDY CLOUDY WEATHER COV..... WEATHER TYPE....NONE NONE NONE NONE TEMP............41 45 47 47 RH..............63 51 46 46 20 FT WIND......E 3 NE 3 NE 6 NE 6 MIX HGT (FT)....1900 3600 3600 3100 TRANSPORT WIND..E 8 E 6 E 6 NE 13 DISPERSION IDX..4 20 20 41 CHC OF PCPN (%).10 10 10 10 .TONIGHT... SKY/WEATHER.........CLOUDY (95-100 PERCENT). CHANCE OF RAIN THROUGH THE NIGHT. CHANCE OF SNOW AFTER MIDNIGHT. MIN TEMPERATURE.....AROUND 31 TO 33. MAX HUMIDITY........92 TO 94 PERCENT. WIND (20 FT)........LIGHT WINDS BECOMING NORTH 5 TO 8 MPH AFTER MIDNIGHT. CWR.................50 PERCENT. MIXING HEIGHT.......700-1800 FT AGL. TRANSPORT WINDS.....NORTH WINDS 13 MPH DECREASING TO 5 MPH EARLY IN THE MORNING. TIME (CST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM SKY (%).........CLOUDY CLOUDY CLOUDY CLOUDY CLOUDY CLOUDY WEATHER COV.....CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE WEATHER TYPE....RAIN RAIN RAIN RAIN RAIN RAIN TEMP............44 41 38 37 35 34 RH..............54 65 74 81 86 89 20 FT WIND......NE 3 NE 3 N 3 N 3 N 6 N 7 MIX HGT (FT)....1800 1800 1200 900 900 700 TRANSPORT WIND..NE 10 NE 10 NE 13 NE 7 NE 7 N 6 DISPERSION IDX..19 19 18 5 5 5 CHC OF PCPN (%).30 30 30 50 50 50 .TUESDAY... SKY/WEATHER.........CLOUDY (95-100 PERCENT). CHANCE OF SNOW THROUGH THE DAY. CHANCE OF RAIN IN THE AFTERNOON. MAX TEMPERATURE.....36 TO 38. MIN HUMIDITY........71 TO 74 PERCENT. WIND (20 FT)........NORTHWEST WINDS 8 TO 13 MPH WITH GUSTS TO AROUND 25 MPH. CWR.................50 PERCENT. MIXING HEIGHT.......600 FT AGL INCREASING TO 2000 FT AGL BY LATE MORNING...THEN INCREASING TO 4800 FT AGL IN THE AFTERNOON. TRANSPORT WINDS.....NORTH 13 TO 22 MPH. TIME (CST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM SKY (%).........CLOUDY CLOUDY CLOUDY CLOUDY CLOUDY CLOUDY WEATHER COV.....CHANCE CHANCE CHANCE CHANCE CHANCE CHANCE WEATHER TYPE....SNOW SNOW SNOW RAIN RAIN RAIN TEMP............33 34 36 37 37 37 RH..............91 94 91 82 76 73 20 FT WIND......N 8 N 9 N 12 N 13 N 13 N 12 MIX HGT (FT)....600 600 2000 4800 4800 4600 TRANSPORT WIND..N 13 N 13 N 21 N 20 N 20 N 22 DISPERSION IDX..11 11 28 59 59 65 CHC OF PCPN (%).50 50 50 30 30 30 $$ FORECASTER...LATIMER REQUESTED BY...CLARK TYPE OF REQUEST...PRESCRIBED .TAG 20100301.CHEAT.01/HUN