🌌 Aurora alerts

Here you’ll find up-to-date information and alerts about aurora for Germany.

Aurora in the sky
Photo: Our own — AllSkyKamera Network

What are auroras?

Auroras are spectacular lights in the sky, mostly visible in polar regions. They occur when charged particles from the solar wind collide with oxygen and nitrogen in Earth’s atmosphere, producing green, red or violet glows. During strong solar activity, auroras can occasionally be seen from Germany as well.

What is the KP index?

The KP index measures geomagnetic activity on a scale from 0 (very quiet) to 9 (extreme). Higher KP values increase the chance of visible aurora at mid-latitudes. From roughly KP≈5, aurora may occasionally be visible in Germany.

Note: KP is a global activity index (0–9, UTC). Visibility also depends on location, darkness, clouds and horizon view.

KP index (GFZ Potsdam, daily plot)

The graphic below shows today’s KP evolution. From around KP≈5, aurora can be possible in Germany.

KP index daily plot (GFZ Potsdam)
Source: GFZ Potsdam

What to expect today?

Current KP (UTC). Rough guidance for Germany.
KP

KP index over the last 24 h (GFZ Potsdam)

Times are in UTC. Germany: UTC+1 (winter) / UTC+2 (summer).

Source: GFZ Potsdam
KP 4–
Mostly no aurora visible in Germany (rare exceptions).
KP 5–6
Aurora possible in Northern Germany at times.
KP 7+
Aurora likely with good chances further south.