Look out tomorrow - 
The X8.3 solar flare from Region 486 has been confirmed as a halo
coronal mass ejection (perhaps a borderline partial halo event). This means that mass ejected from the region contains an Earthward-directed component.
That component is expected to impact the Earth on 03 or 04 November, but with heaviest emphasis on the early UTC hours of 04 November. For North American observers, this translates to the evening (probably late evening) hours on MONDAY NIGHT, Eastern Standard Time.
A middle latitude auroral activity WATCH has been issued for the 03 to 06 November time-frame with heaviest empahsis on 04 November. It is appended below.
Although this event has the potential to be perhaps as strong as the Great Storm of 29 and 30 October, we do not believe it will. Nevertheless, the chance for periods of significant auroral activity exists for 03 through 06 November (again, with emphasis on 04 November).