Shuttle Weather Officer Kathy Winters briefed Shuttle Launch Director Mike Leinbach and Final Inspection Team Director Tom Ford on weather conditions for launch. We currently are "red" or “no go” for launch due to the low cloud ceiling. The weather team is seeing more breaks in the clouds as they make landfall. The temperature at Launch Pad 39A currently sits at 50 degrees and is expected to drop another degree or two before launch. Earlier tonight, mission managers gave the “go” for filling space shuttle Endeavour’s external fuel tank, which began at 6:50 p.m. EST. The process should take approximately three hours.