Data from Tromsø¸ Geophysical Observatory
When a solar wind blow reaches the Earth, it creates additional ionization in the areas around the magnetic poles. The radio propagation paths that cross the poles may be degraded because of increased absorption of the radio signal. The auroral activity index ranges from 1 to 10.
Space Weather Prediction Center – National Oceanic and Atmosperic Administration
AURORA – 30 MINUTE FORECAST