Clouds
Clouds are the real aurora forecast
Why cloud cover decides most aurora nights, why one cloud percentage misleads, and how to use hourly forecasts and a car to find a clear sky.
Topic
Aurora forecast
2 posts. All posts
Kp index
What the Kp index really tells you (and what it doesn't)
Kp is a global, three-hour measure of geomagnetic activity. Here is what it means for your aurora night, why location matters, and what it leaves out.