Aurora Borealis
The sun runs on an 11-year sunspot cycle. You can see the aurora when there is solar wind but active sunspots make it more colorful. There are Ap's that alert you to intensity (KP index) and when they are likely to appear. Weather & Wind Ap's are needed as well as you need to look at several to know when clouds will appear or dissipate. Contact me for these ap's.
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