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  • Sunspot070910

    07/10/2010 | The K7RA Solar Update

    The average daily sunspot numbers for this week rose from 11.7 to 16, back to the level from two weeks ago. The geomagnetic indices have quieted down, with average mid-latitude A index dropping over five points from the previous week. Sunspot numbers for
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  • Sunspot061010

    06/11/2010 | The K7RA Solar Update

    With calmer solar activity, geomagnetic conditions were stable this week. The average daily sunspot numbers were down 7.6 points to 17.7, and the average daily solar flux dropped two points to 71. The average planetary A index declined 6.4 points to 7.9,
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  • Sunspot060310

    06/04/2010 | The K7RA Solar Update

    The average daily sunspot numbers were up nine points to 25.3 for this week, compared to the May 20-26 period; the average daily planetary A index rose nearly 10 points to 14.3, and this rise in geomagnetic instability came with the increase in solar acti
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  • sunspot040110

    04/02/2010 | The K7RA Solar Update

    Even though this bulletin may arrive a little early (due to the Good Friday holiday on April 2), jokesters are still too late for sneaking any First of April pranks into this bulletin. No matter when you read it, this bulletin is dated April 2 for good re
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  • sunspot032510

    03/26/2010 | The K7RA Solar Update

    New sunspot group 1057 appeared on March 23; by March 24, it was 38 times its original size. It covered 10 one-millionths of the solar hemisphere on Tuesday, and on Wednesday, it grew to 380 one-millionths. On Thursday, new sunspot group 1058 appeared, an
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