Aurora forecast

Predicted K-indices

Below you'll find the geomagnetic conditions for the middle and high latitude. These values indicate the probability for at least one 3-hour K index, at the indicated level, for each of the next three days. Active conditions start at a K index of 4, minor storming K index 5 and heavy storming starts from K 6. It's the fastest way to quickly look if a geomagnetic storm might occur. The predictions are updated daily.

Predicted 3-hour High latitude k-indices

Predicted 3-hour Middle latitude k-indices

The Wang-Sheeley-Arge model

This model predicts the solar wind speed and the interplanetary magnetic field (IMF) polarity at Earth, two important parameters in predicting geomagnetic activity. The three predictions (red, green and blue dots) are based on data of Wilcox (WSO), Mount Wilson Observatory (MWO) and SOLIS (NSO) solar observatories.

Predicted Solar Wind Speed at Earth

Comparision of solar wind speed data (solid black line) with Wang-Sheely-Arge model predictions (colored dots) of the solar wind speed for the upcoming three days. Click on the image for a view on the last three rotations.

Predicted Interplanetary Magnetic Field (IMF) Polarity at Earth

Comparision of IMF polarity data (solid black line) with Wang-Sheely-Arge model predictions (colored dots) of the IMF polarity for the upcoming three days. Click on the image for a view on the last three rotations.