SpaceX plans a third attempt today to launch a space weather satellite from Cape Canaveral Air Force Station.
Liftoff of a Falcon 9 with the $340 million Deep Space Climate Observatory mission is scheduled for an instantaneous window at 6:03 p.m.
The forecast is excellent, with less than a 10 percent chance of weather violating launch rules.
Conditions looked good Tuesday, but high-altitude winds proved too strong for the rocket to fly through safely, resulting in the countdown being scrubbed a little over 10 minutes before a planned 6:05 p.m. liftoff.
"Safety prevails," said NASA TV commentator Mike Curie.
In a Twitter message earlier, SpaceX CEO Elon Musk noted "extreme wind shear" over the Cape that could push the rocket off course or stress it beyond levels it was designed to withstand at high speed.