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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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03/05/2010 | The K7RA Solar Update
Two new sunspot groups appeared on March 1, numbered 1052 and 1053. The total number of sunspot groups appearing over the last month is 11. Looking at our 3-month moving average of daily sunspot numbers, the latest for December-January-February is 22.4, f
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01/15/2010 | The K7RA Solar Update
The recent sunspot activity that we've been experiencing remains strong. The weekly averages of daily sunspot numbers that we've been reporting over the past six weeks were 1.9, 21.1, 31.4, 21.9, 14.6 -- and now 26.4.
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01/08/2010 | The K7RA Solar Update
Recent sunspot activity is increasing, and the numbers bear this out. The average daily sunspot number for 2009 was 5 and the average for 2008 was 4.7.
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