Description

What is Lumavik?
An aurora forecast for iPhone and the web that tells you whether the northern or southern lights are worth going outside for tonight, where you are.

Where does the data come from?
From the NOAA Space Weather Prediction Center: the planetary K-index, the 3-day geomagnetic forecast, the OVATION auroral-oval model and real-time solar wind measured at the L1 point.

Will it tell me about my exact location?
It gives a probability for your spot (Unlikely, Low, Possible or Likely) based on forecast Kp, your geomagnetic latitude, darkness and your position relative to the auroral oval. It cannot see your clouds, and it says so when cloud is the limiting factor.

Can it wake me up when the aurora appears?
Yes. Arm an alert for your location and the app sends a push when aurora is likely near you.

Does it work in the southern hemisphere?
Yes. The map and forecast switch to the aurora australis automatically.

Is it free?
The forecast, Kp index, 3-day outlook, oval map and one alert location are free. An optional Pro plan adds custom alert thresholds, more saved locations, an hourly timeline and solar-wind detail.