A second CME is likely to hit Earth on Saturday and Sunday, associated with the solar flare which is rated X9.
That means “enhanced auroral visibility is possible further south across central England and similar latitudes, though cloud and rain could hamper viewing potential for some,” says Krista Hammond.
In the US, aurora might be seen in the northern states, and from the mid-west to Oregon, according to NOAA’s Space Weather Prediction Centre.
The X9 solar flare emitted is the largest categorised by Nasa. The smallest is B, followed by C, M, and X. The scale ranks from 1 to 9, so X9 is the most powerful in Nasa’s ranking.
