-
03/02/2012 | The K7RA Solar Update
The average daily sunspot number this week was down 12 points from the previous week, and the solar flux was about the same. Sunspot numbers for February 23-29 were 52, 47, 47, 58, 45, 35 and 22, with a mean of 43.7. The 10.7 cm flux was 103.3, 108.9, 108
Learn More -
01/06/2012 | The K7RA Solar Update
We’re continuing to see good conditions, although sunspot activity has declined a bit. The average daily sunspot numbers for December 29-January 4 declined nearly 20 points (when compared to the previous seven days) to 88.1; this is the lowest reported we
Learn More -
12/30/2011 | The K7RA Solar Update
The average daily sunspot numbers were up over the past week, 12.3 points -- or about 13 percent -- to 107.6. Likewise, the average daily solar flux rose 14.2 points -- or 11 percent -- to 143.1. Sunspot numbers for December 22-28 were 105, 123, 101, 66,
Learn More -
12/16/2011 | The K7RA Solar Update
Solar activity dropped this week, with the average daily sunspot numbers declining more than 39 points to 94.7. It’s been 13 weeks since the average daily sunspot number for the week was that low or lower, when we reported an average of 91.7 in the Septem
Learn More -
12/09/2011 | The K7RA Solar Update
What happened to that new “grand minima”? Solar Cycle 24 just keeps rolling along -- for the first seven days in December, there were eight new sunspot groups. December 5 had the largest sunspot coverage over the past week, with a daily sunspot number of
Learn More -
12/02/2011 | The K7RA Solar Update
Solar Cycle 24 continues its upturn. We have a new high for the trailing three month daily sunspot number average. Starting with the three month period ending in December 2010 and going through November 2011, they were 30.1, 35.3, 55.7, 72.3, 74.4, 65.9,
Learn More -
11/28/2011 | The K7RA Solar Update
Recently, I mentioned recently that some of the sunspot numbers released by NOAA didn’t seem right. I just got word from Mike Husler at NOAA that data posted recently -- like that record-breaking day when the sunspot number hit 220 -- was wrong. The corre
Learn More -
11/23/2011 | The K7RA Solar Update
Not much in the way of solar excitement this week, except there are many sunspots, but the solar activity in terms of flares or coronal mass ejections is low. The overlapping (by one day) average sunspot numbers in this bulletin declined 21 points to 124.
Learn More
Search for Amateur Radio News
