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    02/15/2011 | Sunspot 1158 Produces Largest Flare of Solar Cycle 24; CME Headed Toward Earth

    Over the past few days, there has been a lot of activity on the Sun. On Sunday, February 13 at 1738 UTC, sunspot 1158 unleashed an M6.6-level blast and on Tuesday, February 15, the same sunspot unleashed an X-class flare, the strongest solar flare in more
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    01/28/2011 | The K7RA Solar Update

    The average daily sunspot numbers rose over the past week (ending January 26) by 11.3 points to 32.6, compared to the previous week, while the average daily solar flux rose 3.1 points to 83.5. The planetary A index average was down 2 points to 2.9, and mi
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    10/08/2010 | The K7RA Solar Update

    Solar activity quieted down over the past week. There were no sunspots on Wednesday and Thursday -- October 6-7 -- and the average daily sunspot number declined nearly 18 points to 27.6, compared to the previous week. The average daily solar flux values w
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