http://www.solarham.net/
http://www.spaceweather.com/

The NOAA Space Weather Prediction Center (SWPC) has issued a Strong G3 Geomagnetic Storm watch beginning tomorrow (June 22). The expected storm is the result of a full halo CME observed early Sunday morning. Sky watchers at middle to high latitudes should be alert for visual aurora during the next several days.

a aurora byva uz kdyz je g2

TEH