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  • latest042811

    04/29/2011 | The K7RA Solar Update

    Geomagnetic conditions are quiet this week, but they may become slightly unsettled over this weekend. The average daily sunspot numbers were down more than 18 points to 74.9, while the average daily solar flux was off less than 4 points to 113.4. Sunspot
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    03/25/2011 | The K7RA Solar Update

    All solar indicators were lower again for the second consecutive week. The average daily sunspot numbers declined more than 28 points from the week before to 40.9, while the average daily solar flux was off more than 18 points to 94.8. But looking at sola
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  • latest031711.jpg

    03/18/2011 | The K7RA Solar Update

    The average daily sunspot numbers this week plummeted 45 points to 69, while the average daily solar flux was off over 26 points to 113.1. Sunspot numbers for March 10-16 were 88, 105, 78, 64, 51, 47 and 50, with a mean of 69. The 10.7 cm flux was 131.3,
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    01/21/2011 | The K7RA Solar Update

    The average daily sunspot numbers dropped from 50 (on the reporting week ending January 5) to 38 on January 6-12, and now 21.3 on January 13-19. Sunspot numbers for January 13-19 were 14, 11, 11, 15, 36, 34 and 28, with a mean of 21.3. The 10.7 cm flux wa
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    12/31/2010 | The K7RA Solar Update

    There were no sunspots for a full week, December 18-24. Christmas Day saw a return to sunspot activity, so the last two of those spotless days were in the Thursday through Wednesday reporting period in this bulletin, December 23-29. The average daily suns
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  • latest112610

    11/26/2010 | The K7RA Solar Update

    The average daily solar flux declined this week more than 36 points compared to last week, to 24.6. Our reporting week -- which ran until November 24 -- showed the daily sunspot number declining from 40 to 11, but on November 25 the sunspot number rose to
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  • sunspot092410

    09/24/2010 | The K7RA Solar Update

    The autumnal equinox occurred early yesterday, at 0309 UTC on September 23. Conditions were good this week, with sunspots visible every day -- and very little geomagnetic activity. The average daily sunspot numbers rose more than 24 points to 40 and the a
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  • Sunspot052810

    05/28/2010 | The K7RA Solar Update

    This weekend is the CQ WPX CW Contest and conditions may be a little rough. Our current sunspot group 1072 has reached the Sun’s western horizon and is shrinking, and to top it all off, what looked like a possible emerging spot on Wednesday was not to be.
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