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09/07/2011 | Stanford University Researchers Announce Sunspot Breakthrough
Imagine forecasting a hurricane in Miami weeks before the storm was even a swirl of clouds off the coast of Africa -- or predicting a tornado in Kansas from the flutter of a butterfly’s wing in Texas. These are the kind of forecasts meteorologists can onl
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09/02/2011 | The K7RA Solar Update
Sunspot activity rose again this week, with the average daily sunspot number up nearly 18 points to 83, but the geomagnetic indices -- both planetary and mid-latitude -- were each down slightly. The high sunspot number for the week was 121, recorded on We
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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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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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04/01/2011 | The K7RA Solar Update
The activity we could see recently on our Sun’s far side -- thanks to the STEREO mission -- has been rotating into view, producing some nice sunspot activity and the resulting improved upper-HF propagation. Compared to the previous week (March 17-23), the
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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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01/14/2011 | The K7RA Solar Update
The average daily sunspot numbers declined 12 points to 38 during the past week, compared to the previous week, December 30 through January 5, when the average was exactly 50. Sunspot numbers for January 6-12 were 28, 52, 52, 50, 35, 26 and 23, with a mea
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11/12/2010 | The K7RA Solar Update
Both the average daily sunspot numbers and solar flux increased over the past week, with sunspot numbers up 7.4 points to 33.1, and solar flux up 2.1 points to 84.2. Four new sunspot groups have appeared since November 4. For some reason, NOAA is currentl
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