Last updated at 3:23 PM on 28th December 2011
Massive solar storm 'could knock out radio signals' over next three days, warn scientists

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.’

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