Welcome to the aurora forecast website. My name is Tom and i am the creator of this website. I am a hobby photographer and web developer on my spare time. I had always believed that the aurora was something you could only see when close to the north pole. I live south in Norway and when i realised that the aurora was visible from where i lived i found myself to constantly following the aurora forecasts. I found the aurora forecast difficult to understand at first and the search for knowledge made me combine my hobbies and it all ended up in this aurora forecast project. If you want to learn more about how this project came to life you can follow this link.
As a visitor to this page i imagine you also have some questions about the forecast and the aurora itself. I will try answering them as good as i can and please make sure to contact me if you have questions that still are unanswered.
What are KP numbers and what do they mean?
Well to put it simply-the abbreviation KP comes from the German «Planetarische Kennziffer» which translates to planetary numbers. In English- Planetary Index. So basically- KP-index is a mix of terminology indicating the strength of the aurora borealis and your chances of witnessing it.
KP-index is a rising numerical function that is used to calculate and indicate the chances of conditions which are conducive to aurora borealis occurring. The higher the number- the higher the chances of you getting to see some northern lights.
KP-index is a system of measuring aurora strength. It goes from 0 to 9 (0 being very weak, 9 being a major geomagnetic storm with strong auroras visible).
So when you’re looking at the aurora forecast page, you want to look for high Kp numbers. The higher the better. Anything above (and including) Kp5 is classed as a geomagnetic storm.
What causes the aurora?
The aurora borealis are the result of collisions between particles in the Earth’s atmosphere and charged particles released from the sun’s atmosphere. When this happens we can see the beautiful colours appearing in the sky. The aurora may appear in every colour range, but the most common colour is green. Aurora borealis is also known as the northern lights.
Latest estimates (three hour data)