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    02/25/2011 | The K7RA Solar Update

    The average solar flux was nearly unchanged this week, up just 0.3 point to 103.8, while the average daily sunspot number was down 4.9 points to 65. Sunspot groups 1161 and 1162 -- which brought so much activity last week -- have now rotated across our Su
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    02/04/2011 | The K7RA Solar Update

    The past week had one 0 sunspot day -- Thursday, January 27. Even though the activity came right back, the average daily sunspot number for the week fell more than 12 points to 20.1, and the average daily solar flux declined 2.7 points to 80.8. After the
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  • latest122410

    12/24/2010 | The K7RA Solar Update

    Sunspots disappeared this week. Five days with no spots is the longest since May 9-19, 2010, when we saw 11 days in a row in which the Sun was spotless. Since then, there has only been the occasional day or two which was spot-free. April 2010 saw 13 conse
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    12/10/2010 | The K7RA Solar Update

    The average daily sunspot numbers for the week were up more than nine points to 35, and average solar flux rose more than six points to 87.3. These differences compare the dates of December 2-8 with the previous seven days. The average planetary A index d
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