The flames are visible, but there’s little visible exhaust, as opposed to SRB’s.
I anticipate hearing this one from the beach across the street tonight (Indialantic, FL about 20 some miles down the coast).
Post what you see of the launch. It’s supposed to spend a lot of time beating up the launch pad before it finally gets moving.
spaceflightnow.com
2225 GMT (5:25 p.m. EST)
Weather continues to look excellent for launch, fueling operations remain underway at pad 37B and mission managers say there are no significant technical issues being worked in the countdown.
spaceflightnow.com
0053 GMT (7:53 p.m. EST Sat.)
Now 45 minutes from launch. All systems remain “go” for a liftoff of the Delta 4-Heavy rocket at 8:39 p.m.