Published on: July 13, 2009 at 5:51 PM

Poor weather has again scrubbed the launch of STS-127, the Space Shuttle Endeavour.

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A thunderstorm north of the Cape resulted in a red to launch condition for lightning and the presence of thunderstorm anvil clouds. There was also a field mill violation (which is a measurement of the electrical field from stations around the launch site).

Launch attempt is not set for Wednesday (40% no go forecast). The forecast for tomorrow was 60% no go, and deteriorating. The preferred launch time Wednesday at 6:03 p.m. EDT. The window lasts from 5:58-6:08 p.m. EDT.