Skywatchers will be hoping for clear skies from today because particles from a recent solar storm will slam into Earth and produce amazing Northern Lights, or auroras.
On the downside, experts expect radio blackouts for a few days, caused by the radiation from the flare – or coronal mass ejection (CME) – causing magnetic storms.
The flare is part of a larger increase in activity in the Sun, which runs in 11-year cycles. It is expected to peak around 2013.
The National Oceanic and Atmospheric Administration’s Space Weather Prediction Center wrote: ‘Category G1 (Minor) geomagnetic storms are expected 28 and 29 December due to multiple coronal mass ejection arrivals. R1 (Minor) radio blackouts are expected until 31 December.’
Devices that depend on radio waves include GPS systems, radios and mobile phones.