Here's what that storm currently looks like (click to enlarge) as it crawls up the eastern seaboard but still just out of reach of us.
But another major change is in the jet stream. The lower jetstream ends up moving well north in the pacific, actually above Hawaii (giving them abnormally high temps), and extends all the way across the US mainly in the west and south.
There is another side-effect of this as well, and it's in the Atlantic. Because the thunderstorms lead out into the Western Atlantic, that means there's higher winds which means that they literally kill tropical storms before they have a chance to form. The term is called wind shear, which are cross winds that destabilize cyclones like hurricanes. Think of a pinwheel and it blowing in the wind, then go up to it and blow on it in another direction, it'll slow down or shake until it stops because the wind can't properly rotate it. That's what happens on a larger scale
We'll have to see if this prediction comes through as right now it's a 50/50 chance of happening. If it does though we'll notice the difference well across the US.