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06/18/2010 | The K7RA Solar Update
The average daily sunspot numbers were up 2.5 points from last week, despite the fact that there were no sunspots at all this week on June 15-16. A new sunspot group 1082 emerged yesterday, June 17, and yielded a daily sunspot number of 14. A nice thing a
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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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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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05/07/2010 | The K7RA Solar Update
Sunspots made a strong return this week -- and so did geomagnetic activity. The average daily solar flux increased 4.2 points to 79.6; on Wednesday, May 5, the daily sunspot number reached 77, the highest in nearly four years. The sunspot number hasn’t be
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04/16/2010 | The K7RA Solar Update
Weakened sunspots faded this week, and we were buffeted with more geomagnetic instability, but without the dramatic geomagnetic storms of the previous week. The average daily sunspot numbers fell more than 20 points to 12.1, and the average solar flux dro
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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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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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03/19/2010 | The K7RA Solar Update
On March 6-9, we got a taste of the bad old days from 2008-2009 when there were frequent stretches of 0 sunspots. After March 9, activity picked up and we hope there is no end in sight to the much-welcome sunspots. This week -- March 11-17 -- the average
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