Russian Auroras
Earth is entering a stream of medium-speed (500 km/s) solar wind. While this is not yet causing a geomagnetic storm, the action of the wind is sufficient to ignite bright auroras around the Arctic Circle. Valentin Jiganov sends this picture taken on Sept. 13th from Khibiny in the Murmansk region of Russia:
Such displays could spread around the Arctic Circle tonight. NOAA forecasters estimate a 45% chance of polar geomagnetic storms on Sept. 13th as the solar wind continues to blow.
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