FNUS72 KCAE 171213 FWSCAE SPOT FORECAST FOR FG_TA21...DEPARTMENT OF DEFENSE NATIONAL WEATHER SERVICE COLUMBIA SC 813 AM EDT FRI JUN 17 2011 FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON JUNE 17. IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER SERVICE. .DISCUSSION... A WEAK PRESSURE TROUGH WILL EXTEND THROUGH THE FORECAST SITE TODAY AND TONIGHT. THERE IS LITTLE MOISTURE SO THE THUNDERSTORM CHANCE APPEARS LOW DESPITE THE TROUGH AND STRONG HEATING. BELIEVE THE RELATIVE HUMIDITY WILL STAY ABOVE 25 PERCENT...ALTHOUGH IT WILL BE CLOSE DURING THE MID TO LATE AFTERNOON. STRONG MIXING WILL OCCUR TODAY BECAUSE OF THE HEATING...BUT AN INVERSION WILL SET UP AROUND SUNSET WHICH IS AROUND 830 PM. THE PRESSURE GRADIENT IS WEAK SO THERE WILL BE VARIABILITY IN THE WIND DIRECTION. .TODAY... TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%)..............36 36 37 37 37 37 38 40 42 WEATHER COV.......... SCH WEATHER TYPE......... TSM TEMP.................76 81 87 91 94 96 97 97 97 RH...................73 60 48 40 31 28 28 27 28 20 FT WIND DIR.......W W W W W SW SW SW SW 20 FT WIND DIR.......260 260 250 250 250 240 240 240 240 20 FT WIND SPD.......2 2 3 4 4 4 4 4 4 20 FT WIND GUST......5 4 5 5 10 10 10 10 10 MIX HGT (KFT)........1.6 2.8 4.0 4.8 5.5 6.0 6.5 6.7 6.5 TRANSP WIND DIR......W W W W W W SW SW SW TRANSP WIND SPD......2 4 6 6 5 5 6 6 6 .TONIGHT... TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM SKY (%)..............45 47 48 48 49 50 51 52 53 52 49 46 WEATHER COV..........SCH SCH CHC CHC CHC CHC SCH SCH SCH SCH WEATHER TYPE.........TSM TSM TSM TSM TSM TSM TSM TSM TSM TSM TEMP.................95 92 89 84 80 78 76 74 73 72 70 69 RH...................30 34 41 49 58 65 69 75 80 83 89 92 20 FT WIND DIR.......SW SW SW SW SW SW SW SW SW SW SW SW 20 FT WIND DIR.......230 230 230 230 220 220 220 210 210 210 220 220 20 FT WIND SPD.......5 4 4 4 3 2 2 2 2 2 2 2 20 FT WIND GUST......10 5 5 5 5 5 5 5 5 5 5 5 MIX HGT (KFT)........5.7 4.6 3.9 3.7 1.8 0.3 0.3 0.3 0.3 0.3 0.3 0.3 TRANSP WIND DIR......SW SW S S E E E S SW SW S S TRANSP WIND SPD......5 2 1 1 2 5 10 16 20 18 15 13 .SATURDAY... TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM SKY (%)..............44 41 40 39 39 39 40 42 43 48 60 65 WEATHER COV.......... SCH WEATHER TYPE......... TSM TEMP.................69 69 72 78 84 88 91 94 96 97 97 97 RH...................93 96 87 71 59 52 45 39 35 33 33 33 20 FT WIND DIR.......SW SW W W W W W W W W SW SW 20 FT WIND DIR.......230 230 250 250 260 270 260 260 260 250 240 240 20 FT WIND SPD.......3 3 2 3 4 5 6 6 6 6 6 6 20 FT WIND GUST......5 5 5 5 10 10 15 15 15 15 15 15 MIX HGT (KFT)........0.3 0.4 0.8 1.6 2.7 3.8 4.6 5.3 5.7 6.3 6.7 6.5 TRANSP WIND DIR......SW SW SW SW W W W W W W W SW TRANSP WIND SPD......13 13 14 14 13 13 13 12 12 12 12 13 $$ FORECASTER...LINTON REQUESTED BY...ALLEN BRASWELL TYPE OF REQUEST...PRESCRIBED .TAG 20110617.FG_TA.01/CAE