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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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  • 06/05/2009 | The K7RA Solar Update

    It is so great to see some real Solar Cycle 24 sunspot activity this week. Instead of a phantom that pops into view one day and is gone the next, we have sunspot 1019, which has persisted for five days so far. Emerging on Sunday, May 31, the resulting dai
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  • 05/22/2009 | The K7RA Solar Update

    Do sunspots matter? Many of us are surprised at how good conditions can be with zero sunspots; the weak solar wind and lack of flares and geomagnetic events likely have something to do with it. Many times during the more active solar periods, sunspots wer
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  • Scientists predict that Solar Cycle 24 will peak in May 2013 with 90 sunspots per day on average. [Graph courtesy of Space Weather Prediction Center]

    05/11/2009 | Scientists Predict Solar Cycle 24 to Peak in 2013

    At the annual Space Weather Workshop held in Boulder, Colorado last month, an international panel of experts led by NOAA's Space Weather Prediction Center (SWPC) predicted that Solar Cycle 24 will peak in May 2013 with 90 sunspots per day on average. If t
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  • 04/24/2009 | The K7RA Solar Update

    Teased again, on Wednesday, April 22 we saw sunspot 1015 fade away, just as it was about to slip over our Sun's western limb. It emerged only briefly, late on April 21, and by Thursday it had disappeared. Sunspot numbers for April 16 through 22 were 0, 0,
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  • 03/13/2009 | The K7RA Solar Update

    Last week's bulletin again mentioned briefly appearing sunspots and it happened again this week. For just two days, another Solar Cycle 23 spot appeared, number 1014. The latitude of the spot was consistent with an old and fading solar cycle. As this peri
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