Free Email Alerts

Aurora Alerts

Get an email when the Kp index reaches your chosen threshold. One alert per day maximum — no spam, no marketing, just aurora notifications.

Which threshold is right for me?

Alaska, Canada, Norway, Iceland, Greenland

Kp 3+

Northern US, Scotland, Sweden, Finland

Kp 5+

Central US, Central Europe, Southern UK

Kp 7+

Southern US, Mediterranean, Australia

Kp 9

These are general guidelines. Higher solar activity raises aurora visibility further from the poles.

What triggers a Kp spike?

Solar flares and coronal mass ejections (CMEs) are what drive the strongest aurora events. An active sun today often means a Kp alert in your inbox 1–3 days later.

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