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  • latest082511

    08/26/2011 | The K7RA Solar Update

    Solar activity rose this week, with the average daily sunspot number rising more than 40 points to 66 points, while the average daily solar flux rose more than 13 points to 101.9. Sunspot numbers for August 18-24 were 53, 46, 59, 66, 82, 81 and 75, with a
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  • latest081811

    08/19/2011 | The K7RA Solar Update

    Solar activity was down again this week. The sunspot number on Sunday, August 14 went all the way to 0 for the first time since January 27, which was 29 weeks ago. The average daily sunspot numbers declined nearly 50 points, to 25.6, while the average dai
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  • latest080411

    08/05/2011 | The K7RA Solar Update

    Solar activity markedly increased this week, with the sunspot number rising to 130 on Monday, August 1 -- the highest since a reading of 131 on April 14, 2011. The average daily sunspot numbers more than doubled this week compared to last, rising nearly 5
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  • latest070711

    07/08/2011 | The K7RA Solar Update

    The average daily sunspot numbers for the past week dropped less than a point -- from 42 to 41.6 -- compared to the previous week, while the average daily solar flux was down more than 5 points to 86.2. Sunspot numbers for June 30-July 6 were 34, 51, 54,
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  • latest061611

    06/17/2011 | The K7RA Solar Update

    The average daily sunspot numbers for the past week declined by more than half, nearly 52 points to 35.1, when compared to the previous week. Sunspot numbers for June 9-15 were 46, 35, 37, 16, 16, 48 and 48, with a mean of 35.1. The 10.7 cm flux was 87.5,
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  • latest041411

    04/15/2011 | The K7RA Solar Update

    On Wednesday, April 13, the daily sunspot number reached a new high for Solar Cycle 24 when it hit 153. I looked back over this calendar year and saw that the previous high was 137 on March 8, 2011, 16 points lower than Wednesday. That week’s Solar Update
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  • latest032411.jpg

    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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  • latest021811

    02/18/2011 | The K7RA Solar Update

    A dramatic surge in solar activity is underway, with a level of sunspot numbers and solar flux not seen since 2005-2006. Tuesday’s sunspot number of 100 has not been equaled or exceeded since April 6, 2006 when it was 105. On Wednesday, the solar flux was
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