We will find out at 12:47 UT / 07:47 ET / 01:47 PT. That is the launch time, other than some possible ground wind concerns the weather looks pretty good.
And the answer is NO. It was NOT the ground winds that were the problem rather the upper winds. They were talking about winds in the 120 + range at an altitude of 10 km while at ground level they were negligible .
From the discussion taking place between the forecasters and the launch control, it sounded like the launch could be delayed for at least 48 hours and likely a bit longer than that.