Looks like they're worried about wind shear and are waiting it out.

Though reports are saying that its for more favorable winds and not anything mechanical.

Jinx

Now 2:50pm Eastern. I'm obviously not trying to keep up with OP updates FYI.

Now 3:05 EST. Looking like it could get scrubbed by the wind forecasts.

Window is open until 4:00.

Man...it'll be disappointing if we get scrubbed for weather, of all things. I expected some weird thing to go wrong in the process, but weather was looking good for today.

Yeah. I'm personally worried about the fuel load. Simultaneously loading multiple tanks has to up the difficulty quite a bit.

Launch auto-sequence initiated (aka the holy mouse-click) for 3:45 liftoff #FalconHeavy

- @elonmusk (Twitter)

Looks like the wind has died down enough...

Prop load is starting, so they're at least gonna TRY and get it off today at 3:45pm Eastern.

Can one watch this on TV?

I've heard that PBS may be covering it, but I can't say for sure. Your best bet is at the link in the OP.

Over 500K watching on you tube:

https://www.youtube.com/watch?v=wbSwFU6tY1c

Here's the PBS stream:

https://www.youtube.com/watch?v=lQx6YBtQZbw

Also can be viewed live:

http://www.wesh.com/article/showtime...ocket/16634757

https://www.clickorlando.com/news/sp...h-falcon-heavy