Settings

Your preferences are saved locally in your browser.

Location

Home location

No location set — cloud cover, viewing windows and ISS passes use your saved location.

You can also set a location by searching on the home page globe.

Alert threshold

Notify me when Hp30 reaches…

Hp30 3+

Elevated activity — aurora possible from northern Scotland on dark, clear nights

Hp30 4+

Good chance — aurora from Scotland and possible sightings from northern England

Hp30 5+

Minor storm — aurora from Scotland and northern England

Hp30 6+

Moderate storm — aurora likely from northern England and most of Scotland

Hp30 8+

Severe storm — aurora visible across most of the UK

Email alerts

Get email alerts when aurora activity reaches your threshold above.

Uses your Hp30 threshold above. Unsubscribe link included in every alert.

Push notifications

Get instant alerts when aurora is likely from your location.

Uses your Hp30 threshold above. Works even when your browser is closed.

Quiet hours

Suppress alerts during sleeping hours

High-severity alerts (Hp30 8+) still come through.

All settings are stored in your browser's local storage and never sent to our servers, except when enabling push notifications.