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04/20/2012 | The K7RA Solar Update
Both the solar flux and sunspot numbers reached a short term low on April 8-11, but they are now rising again. For the past week -- April 12-18 -- the average daily sunspot numbers more than doubled, compared to the previous seven days, rising more than 3
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04/13/2012 | The K7RA Solar Update
Solar activity took a serious nosedive this week, with the average daily sunspot numbers dropping to a value less than half the previous week’s average -- down nearly 43 points to 32.6. The solar flux values were also off, down nearly 12 points to 95.9. T
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03/02/2012 | The K7RA Solar Update
The average daily sunspot number this week was down 12 points from the previous week, and the solar flux was about the same. Sunspot numbers for February 23-29 were 52, 47, 47, 58, 45, 35 and 22, with a mean of 43.7. The 10.7 cm flux was 103.3, 108.9, 108
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02/10/2012 | The K7RA Solar Update
Solar activity was down again this week -- this is the third week in a row with sunspot numbers lower than the week prior. On January 20, we reported an average daily sunspot number of 116.9 for January 12-18, 98.7 the next week, followed by 62 the week o
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02/03/2012 | The K7RA Solar Update
Here are some yearly averages that we have neglected at the beginning of the year. These are the average daily sunspot numbers for whole calendar years, from 1994-2011: 48.1, 28.7, 13.2, 30.7, 88.7, 136.3, 173, 170.3, 176.7, 109.2, 68.6, 48.9, 26.1, 12.8
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01/20/2012 | The K7RA Solar Update
New sunspot groups appeared on every day over the past week. On January 12, new sunspot group 1396 appeared, and the next day two more -- 1397 and 1398 -- popped into view. On January 14, four new sunspot groups appeared: 1399, 1400, 1401 and 1402. Januar
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01/13/2012 | The K7RA Solar Update
The average daily sunspot numbers were up this week by a tiny bit, from 88.1 to 90.6, while the average daily solar flux was down slightly, from 136.2 to 134.9. Sunspot numbers for January 5-11 were 99, 118, 110, 90, 90, 63 and 64, with a mean of 90.6. Th
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12/09/2011 | The K7RA Solar Update
What happened to that new “grand minima”? Solar Cycle 24 just keeps rolling along -- for the first seven days in December, there were eight new sunspot groups. December 5 had the largest sunspot coverage over the past week, with a daily sunspot number of
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