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NOAA warns 22 states of R3 blackout risk from solar flare as power grids face danger

Federal forecasters are warning that a powerful X-class solar flare could trigger strong radio blackouts and strain power ...
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Powerful solar flare causes radio blackouts in the Americas: How solar flares impact Earth

On June 15, an intense solar flare erupted from sunspot region AR 4114, reaching an M8.46 level at around 2:25 p.m. EDT (18:25 GMT). This makes it one of the most powerful solar flares observed ...