STS-115 launch postponed

Update: Sunday 8/27
Weighing Options For Atlantis Launch
"NASA is keeping a close eye on Hurricane Ernesto as engineers continue to analyze data from a lightning strike at the launch pad on Friday. A decision is expected later this evening on whether to press ahead with a launch attempt Tuesday or roll Atlantis back to the Vehicle Assembly Building to protect it from high winds."
Saturday 8/26
"The Shuttle Mission Management team decided this afternoon to postpone the STS-115 launch for at least 24 hours. They will be providing more details on the issues they are working at a briefing this afternoon. The briefing will be carried live on NASA TV."