Supposedly it could mean that the Aurora Borealis (The northern lights) will be viewable from much further south than it traditionally is, meaning it may be viewable from Scotland (it's rarely viewable from the northern tips of Scotland) and Northern Ireland, and possibly further down to Northern England (although that is much less likely).
http://www.bbc.co.uk/news/uk-northern-ireland-29190109Presumably the opposite is also true, and the Aurora Australis will be viewable further north too.
But, there is no land close enough to the Antarctic to really take advantage of that. Consider this as the average range of the Aurora Australis.
Does this mean it might warm up for a little while?
It's only 46 degrees here right now. ;-;
It uh, doesn't work like that, unfortunately.
The solar flare isn't strictly hot. It's full of charged ionic particles, which rush past the earth, tugging at the atmosphere. But the magnetosphere of the earth (it's magnetic field) snaps it all back, dragging the ionic particles to the poles of the earth (which also happen to be where the magnetic poles of the earth are).
These charged particles then fall down through the atmosphere and react with it, causing the bright streaking vertical lights of the aurorae (aurora borealis in the northern hemisphere, aurora australis in the southern).
It's a bit more complex than that, but that's it in very simplified terms.
