-
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
Learn More -
![Scientists predict that Solar Cycle 24 will peak in May 2013 with 90 sunspots per day on average. [Graph courtesy of Space Weather Prediction Center]](/img/122x89/News/nms_889.gif)
05/11/2009 | Scientists Predict Solar Cycle 24 to Peak in 2013
At the annual Space Weather Workshop held in Boulder, Colorado last month, an international panel of experts led by NOAA's Space Weather Prediction Center (SWPC) predicted that Solar Cycle 24 will peak in May 2013 with 90 sunspots per day on average. If t
Learn More -
04/24/2009 | The K7RA Solar Update
Teased again, on Wednesday, April 22 we saw sunspot 1015 fade away, just as it was about to slip over our Sun's western limb. It emerged only briefly, late on April 21, and by Thursday it had disappeared. Sunspot numbers for April 16 through 22 were 0, 0,
Learn More -
01/16/2009 | The K7RA Solar Update
A nice sunspot group -- number 1010 -- appeared for five days from January 9-13. Daily sunspot numbers ranged from 11 to 20, and this one was another Solar Cycle 24 appearance. The Cycle 23 sunspots seem to be gone, while the new Solar Cycle 24 isn't pick
Learn More -
Feature
08/04/2008 | "Turn About" Is Fair PlayWe're all used to "multiple choice" quizzes, but I bet you haven't encountered one like this before! As in the TV game Jeopardy!, you get the answer first and then have to pick the right question from the four possibilities. It's a good
Learn More -
07/18/2008 | The K7RA Solar Update
If today is like yesterday and the day before that, it will be the 26th consecutive day with no sunspots. Think this is bad? At the last solar minimum, there were only four days showing any sunspots between September 5 and October 24, 2006.
Learn More -
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
Learn More -
03/20/2008 | The K7RA Solar Update
ARRL Headquarters is closed for Good Friday on March 21, so this bulletin is coming out a day early, and on the vernal equinox. We had a few more days with visible sunspots over the past week. Sunspot numbers on March 15-17 were 12, 12 and 11. Over the pa
Learn More
Search for Amateur Radio News
