Top link, Jo. I think the important bit from that page is this:
Quote:
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Geophysical Activity Forecast: Geomagnetic field activity is expected to be at unsettled to active levels on day 1 (03 August) due to the arrival of the first of two CMEs observed on 01 August (this CME was associated with the long-duration C3/Sf flare at 01/0826Z). Activity is expected to be at active to minor storm levels with a slight chance for major storm on days 2 - 3 (04 - 05 August) due to the arrival of the second slower CME observed on 01 August (associated with a large filament disappearance).
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... which essentially says that due to a Coronal Mass Ejection (i.e. the sun throwing bits of itself off into space) which is heading in our direction, there's a reasonably good chance of seeing some aurora tonight and a better chance of seeing some aurora tomorrow night.
I'm in a good spot here in the highlands ... if we get a break in the clouds I'll keep an eye out and get pictures if possible.