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09/17/2010 | The K7RA Solar Update
The average daily sunspot numbers dropped nearly 23 points to 15.6 this week, and geomagnetic indices were quiet. The average daily solar flux was 78.1, but the latest prediction from USAF and NOAA calls for rising solar flux values. The September 17-23 p
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09/03/2010 | The K7RA Solar Update
Over this past week, four new sunspot groups appeared. Group 1101 was already in place since August 24, and 1102 emerged on August 29. On September 1, two new sunspot groups -- 1103 and 1104 -- appeared, and on September 2, sunspot group 1105 arrived. Thr
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08/13/2010 | The K7RA Solar Update
Sunspot numbers and solar flux increased this week, with the average daily sunspot numbers up more than 32 points to 53, and the average daily 10.7-cm solar flux up more than 3 points to 84.5. These are the numbers from last Thursday through this Wednesda
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07/30/2010 | The K7RA Solar Update
Sunspot activity increased again this week, but on Tuesday and Wednesday -- July 27-28 -- a stiff solar wind increased Earth’s geomagnetic activity, which is a negative for HF propagation. Sunspot numbers for July 22-28 were 39, 45, 41, 39, 39, 15 and 31,
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07/23/2010 | The K7RA Solar Update
Sunspot activity increased recently, although it is foolish to call this a trend, since solar activity has great variability. Sunspot group 1087 was visible for 13 days over July 9-21. In millionths of a solar hemisphere, its size was 30, 100, 120, 130, 7
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06/08/2010 | Space Weather and Solar Storms to be Topics at Upcoming Forum in Nation’s Capital
The National Space Weather Program Council will be conducting a forum in Washington, DC next month. The Space Weather Enterprise Forum, scheduled for June 8 at the National Press Club, will discuss how solar storms affect today’s technological society. Th
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06/04/2010 | The K7RA Solar Update
The average daily sunspot numbers were up nine points to 25.3 for this week, compared to the May 20-26 period; the average daily planetary A index rose nearly 10 points to 14.3, and this rise in geomagnetic instability came with the increase in solar acti
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05/07/2010 | The K7RA Solar Update
Sunspots made a strong return this week -- and so did geomagnetic activity. The average daily solar flux increased 4.2 points to 79.6; on Wednesday, May 5, the daily sunspot number reached 77, the highest in nearly four years. The sunspot number hasn’t be
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