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    04/23/2011 | The K7RA Solar Update

    Both the average daily sunspot numbers and solar flux were both higher for the week: Sunspot numbers up more than 3 points to 93.1 and the solar flux up by 8 points to 117.2. Geomagnetic activity was a bit lower -- with April 20 the most active day -- aft
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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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    08/05/2010 | Active Sun Puts on Display for Earth

    It was quite a busy weekend for our Sun. During the late hours of Friday, July 30, a magnificent coronal mass ejection (CME) billowed away from the eastern limb of the Sun; the source of the blast was apparently sunspot 1092. On Sunday, August 1 at approx
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  • A coronal mass ejection (CME).

    06/08/2010 | Space Weather and Solar Storms to be Topics at Upcoming Forum in Nation’s Capital

    The National Space Weather Program Council will be conducting a forum in Washington, DC next month. The Space Weather Enterprise Forum, scheduled for June 8 at the National Press Club, will discuss how solar storms affect today’s technological society. Th
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  • 10/23/2009 | The K7RA Solar Update

    A tiny Solar Cycle 24 sunspot group -- numbered 1028 -- emerged briefly on Tuesday, October 20, and then was gone. This is another brief phantom sunspot, teasing us with hints of the expected increase in activity that never seems to manifest. Of course, t
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  • 07/31/2009 | The K7RA Solar Update

    No sunspot activity this week, and if no sunspot appears today, July 31, the average sunspot number for July will be 5.1; this is down from June's average of 6.6. The monthly average of the daily sunspot number, January-July 2009, is 2.8, 2.5, 0.8, 1.3, 4
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  • 07/17/2009 | The K7RA Solar Update

    We saw a nice run of eight days with a large sunspot, but none have emerged in the six days since. Unlike other recent spots, this one did not appear just for one or two days and then vanish. Sunspot numbers for July 9-15 were 15, 13, 0, 0, 0, 0 and 0 wit
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