But there are clouds on the horizon. NASA forecasters have upgraded the chances of rain tomorrow to 60%, making a launch seem unlikely. Complicating things, this afternoon’s anticipated thunderstorms will likely further complicate preparations.

The weather folks are more sanguine about Monday, when rain has only a 20% chance of spoiling the show.

But there are clouds on the horizon. NASA forecasters have upgraded the chances of rain tomorrow to 60%, making a launch seem unlikely. Complicating things, this afternoon’s anticipated thunderstorms will likely further complicate preparations.

The weather folks are more sanguine about Monday, when rain has only a 20% chance of spoiling the show.