Geomagnetic Storm Index Screensaver
The Geomagnetic Storm Index screensaver shows the Kyoto Dst index, which measures how much Earth's magnetic field is being disturbed by the solar wind. It goes negative during a storm — the more negative, the stronger the disturbance. It's free, runs in your browser, and ESC exits.
How the Geomagnetic Storm Index screensaver works
The saver reads the Kyoto Dst series via NOAA directly in your browser — no key and no account.
The Kyoto Dst index, which measures how much Earth's magnetic field is being disturbed by the solar wind.
It refreshes on a schedule, so what you see stays current.
Colours can be changed in settings; nothing is stored beyond your own browser.
A worked example
The Kyoto Dst index, which measures how much Earth's magnetic field is being disturbed by the solar wind. It goes negative during a storm — the more negative, the stronger the disturbance.
Settings & tips
- Accent and Background recolour the display.
- Data comes straight from the Kyoto Dst series via NOAA in your browser.
- Press ESC to leave fullscreen.
Frequently asked questions
- Is this real data?
- Yes — it comes from the Kyoto Dst series via NOAA and is refreshed on a schedule.
- Why does it go down during a storm?
- Dst measures how much the ring current is suppressing Earth's surface magnetic field. A stronger storm suppresses it further, so the number falls further below zero.
- Is a key needed?
- No. This source is fully key-less.
- Is it free?
- Yes — free, no download, in your browser.