348 FXUS64 KHUN 240504 AAC AFDHUN AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE HUNTSVILLE AL 1204 AM CDT TUE SEP 24 2013 .UPDATE... FOR 06Z TAFS && .DISCUSSION... /ISSUED 923 PM CDT MON SEP 23 2013/ MOSTLY CLR SKIES WERE OVER THE CWA BUT STLT/RADAR SHOWS CLOUDS/PCPN OVER SRN AL TRYING TO MOVE NORTH. NEW DATA COMING IN SHOWS THAT CLOUDS WILL BEGIN TO MOVE INTO THE TN VALLEY AFTER MIDNIGHT. AS FOR THE CHC OF PCPN TONIGHT...NEW NAM DATA MAINLY KEEPS IT AFTER 12Z TUESDAY. OTHERWISE EXPECT INCREASING DEWPOINTS/LOW LEVEL MOISTURE OVERNIGHT AS THE UPPER LOW APPROACHES THE TN VALLEY. 07 && .AVIATION... FOR 06Z TAFS...CLOUDS ARE SLOWLY CONTINUING TO MOVE NORTH FROM SRN AL. WILL KEEP VFR CONDITIONS UNTIL ARND 13Z. SCT SHRA WILL BE POSSIBLE BETWEEN 13Z AND 18Z...AFTER 18Z SHOULD BE ENOUGH DAYTIME HEATING/INSTABILITY FOR SCT TSRA. SINCE THE UPPER LOW WILL MOVE FAIRLY SLOW...WILL KEEP THE CHC OF PCPN THRU THE FCST PERIOD. 07 && .HUN WATCHES/WARNINGS/ADVISORIES... AL...NONE. TN...NONE. && $$ FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WEATHER.GOV/HUNTSVILLE.