[John H K]

Continuing on, the speed is simply the speed of all the junk headed out from the flare in the CME; 2,400 kilometers per second, which is basically halfway across the US each second.

They're still crunching the numbers to come up with a forecast arrival time but I'd guess it will end up being sometime tomorrow morning Eastern Time (not very well timed for Aurora in the US).

If there are any aurora it will be tomorrow night.

[per loin]

It could reach here before dawn on the west coast, possibly before 5AM.