The northern lights and southern lights could receive a considerable boost again tonight as Earth braces for impact from a powerful coronal mass ejection (CME) hurled from the sun during yesterday's M7.4 solar flare.

The speedy CME is forecast to arrive late tonight or early Friday (Nov. 7) morning (UTC) and could trigger strong (G3) geomagnetic storm conditions, according to NOAA's Space Weather Prediction Center. This follows a surprise round of auroras overnight when a glancing CME arrival combined with lingering effects from a high-speed solar wind stream, and pushed geomagnetic activity to G3 levels, sparking auroras across the northern U.S., Canada and Europe.

NOAA and the U.K. Met Office both have G3 storm watches in effect for Nov. 6 and Nov. 7. If the incoming CME arrives as pre

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