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10/29/2010 | The K7RA Solar Update
The daily sunspot number went all the way to 74 this week (on Tuesday, October 26), but the average sunspot number was down more than 5 points from the previous week, to 50.3. Sunspot numbers for October 21-27 were 34, 34, 43, 57, 57, 74 and 53, with a me
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09/24/2010 | The K7RA Solar Update
The autumnal equinox occurred early yesterday, at 0309 UTC on September 23. Conditions were good this week, with sunspots visible every day -- and very little geomagnetic activity. The average daily sunspot numbers rose more than 24 points to 40 and the a
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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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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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07/10/2010 | The K7RA Solar Update
The average daily sunspot numbers for this week rose from 11.7 to 16, back to the level from two weeks ago. The geomagnetic indices have quieted down, with average mid-latitude A index dropping over five points from the previous week. Sunspot numbers for
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06/25/2010 | The K7RA Solar Update
Sunspot numbers were lower for the past week, compared to the previous period. The average daily sunspot numbers fell nearly 11 points to 16.1. Sunspot numbers for June 17-23 were 14, 16, 28, 13, 14, 14 and 14, with a mean of 16.1. The 10.7 cm flux was 70
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06/11/2010 | The K7RA Solar Update
With calmer solar activity, geomagnetic conditions were stable this week. The average daily sunspot numbers were down 7.6 points to 17.7, and the average daily solar flux dropped two points to 71. The average planetary A index declined 6.4 points to 7.9,
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