Shuttle 60% Chance for GO Friday

NASA Space Shuttle weather officer Kathy Winters said there was a 60 percent chance of acceptable conditions at the 7:55 p.m. liftoff time for STS-126 Endeavour Friday and only a 40 percent chance on Saturday. Forecast.

A cold front approaching the Eastern United States is bringing dark clouds and rain. The best opportunity will be an on-time launch with the final countdown beginning tonight at 10 PM ET.

Endeavour launched in a cloud cover on a spring 2008 orbital mission providing spectators an unusual launch view. Mission planners will be consulting launch weather to ensure that winds and lightening pose no threat to the spacecraft during the climb to orbit.