Articles
Learn how aurora forecasts work, what affects visibility, and how to give yourself better odds when the sky starts getting interesting.
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Every published guide from Northern Lights Tonight, collected in one place.
The KP index is one of the most common numbers in aurora forecasts, but it works best as a rough guide, not a promise. Here is what it means and how casual northern lights watchers should use it.
The northern lights still happen in summer, but long daylight, bright twilight, and short nights make them much harder to see across the U.S. and Canada.
A look at several major aurora storms from 2023 to 2025, where they were visible, and what made each event stand out.
The northern lights have been unusually active because Solar Cycle 25 is in its maximum phase, with high sunspot activity leading to more solar flares, coronal mass ejections, and stronger geomagnetic storms.
The Aurora Borealis, or northern lights, is a natural light display caused by charged particles from the Sun interacting with Earth's magnetic field and upper atmosphere.