GEOMAGNETIC STORMS THIS WEEK: A large hole in the sun's atmosphere is facing Earth and sending a stream of solar wind in our direction. Minor G1-class geomagnetic storms are likely when the gaseous material arrives on Feb. 27th and 28th. Solar wind speeds could top 500 km/s (1.1 million mph), sparking auroras around the Arctic Circle and possibly even in US states along a line from Maine to Washington. Visit Spaceweather.com for updates.
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Above: NASA's Solar Dynamics Observatory obtained this false-color ultraviolet image of the hole in the sun's atmosphere on Feb. 25, 2019.
