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  • 07/03/2008 | The K7RA Solar Update

    This week's bulletin is presented a day earlier than usual, due to the Independence Day holiday on Friday. The weeks seem to drag on with no sunspots in sight. An image from helioseismic holography on Tuesday shows a spot on our
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  • 06/27/2008 | The K7RA Solar Update

    Recent days graced by sunspots were short lived. June 10-June 13 saw a single sunspot group, followed by two days with no spots then a week of spots from June 16-22. During that week, the sunspot number was 11 every day, the lowest non-zero sunspot number
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  • 06/20/2008 | The K7RA Solar Update

    We are lucky to see sunspot activity this week, although it is only one. Sunspot 999 is currently in its most geo-effective position -- near the center of the Sun -- as we see it. This is another old Solar Cycle 23 spot. The sunspot number for the last fe
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  • 06/13/2008 | The K7RA Solar Update

    Sunspot 998 emerged this week, another old Solar Cycle 23 sunspot near the Sun's equator. Daily sunspot numbers for June 10-12 were 14, 11 and 13. Last Sunday, June 8, had the lowest 10.7 cm solar flux value I've ever seen -- 64.9 -- at the observatory in
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  • 06/06/2008 | The K7RA Solar Update

    We had seven days of no sunspots this week, but a sunspot was emerging on Thursday, June 5. Helioseismic holography revealed a high latitude sunspot on the opposite side of the Sun. Until recently, we had no idea what was happening on the far side of the
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  • 05/30/2008 | The K7RA Solar Update

    This week we saw only one sunspot, number 997, and only on Memorial Day, May 26. Alas, this was another sunspot left over from fading Solar Cycle 23 and its appearance was very brief. One day it weakly emerged, it quickly faded from view. The previous fiv
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  • 05/23/2008 | The K7RA Solar Update

    This week several new sunspots appeared for five days, but they were all leftover spots from Solar Cycle 23, not new Cycle 24 spots. But this is okay, because at the sunspot minimum we appreciate any spots we can get. May 16-20 saw daily sunspot numbers o
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  • 05/16/2008 | The K7RA Solar Update

    We've had another week with no sunspots. Our reporting week for this bulletin runs from Thursday through Wednesday, and this is the fifth bulletin of the year reporting zero sunspots for the week. The rest of the 16 bulletins had at least one day with sun
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