“Strong geomagnetic storm watch” is in effect.
It caused moderate radio blackouts, according to NOAA’s Space Weather Prediction Center.
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Just as a hurricane drives rain, wind, and floods, the space weather arising from a solar eruption can come in different forms. First comes the light from a solar flare, disrupting high-frequency radio communications more or less immediately.
Well, this certainly puts the size of our planet in perspective. Flares are rated as a class B, C, M, or X, according to
The sun emitted a significant solar flare peaking at 12:22 p.m. EDT on March 11, 2015. NASA's Solar Dynamics Observatory, which watches the sun constantly, captured images of the event.
Dubbed AR 2192, the “freakishly huge” sunspot spanned some 80,000 miles, or about the same size as the diameter of Jupiter
The second flare disrupted some radar and aircraft systems as well as amateur radio, Christopher Balch, a forecaster at the