Copying this across from the Press Release thread (since I accidentally posted this there this morning).
According to KSC twitter this morning, engineers will be watching the weather tonight as there is a chance of lightening, associated with an approaching frontal system, that could delay rollout if the predictions violate rollout criteria.
In the STS 133 thread, it was mentioned that there was a risk of hail tomorrow at KSC. Could that be a reason to delay the rollout?
I believe so, if that chance were to be in the forecast closer to the time of rollout. That was a nasty storm front when I ran into the tail of it in New Mexico on Monday; all I got were tropical storm force winds, but it's a bit drier out there. The timing of the rollout may end up depending on when the front passes through tomorrow...
It will be part of the discussion tonight if the planned stormfront was "scheduled" to arrive during a time when the RSS was not yet surrounding Endeavour. However, as we saw with Discovery's rollout on January 31, they can get that RSS around her pretty quick when needed.
It's all going to depend on what the finalized forecast around 6pm predicts.