Three rapid bursts of charged particles from the Sun could lead to stunning auroras across the US. The merged CMEs traveled at over 1.5 million mph towards Earth.
NOAA issued a 'severe geomagnetic storm watch', the first in 20 years. The storm may cause visible auroras and mild disruptions to radios, satellites, and power grids.
The solar storm is linked to a large sunspot visible to the naked eye. Sunspots correlate with solar flares and CMEs, with larger spots leading to more intense solar activity.
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