ARRL

Search for Amateur Radio News

  • Solar Flare

    03/28/2014 | The K7RA Solar Update

    Solar flux average is inching upward
    Learn More

  • Solar Flare

    07/01/2013 | Strong Geomagnetic Storm Enlivens The Magic Band

    It was a hot time on 6 meters!
    Learn More

  • latest041913.jpg

    04/19/2013 | The K7RA Solar Update

    While solar activity weakened this past week, geomagnetic conditions were stable. The geomagnetic storm predicted for last weekend did not happen, and both the planetary and mid-latitude A index only rose to 10 on April 14 in response to a glancing blow f
    Learn More

  • latest020813

    02/08/2013 | The K7RA Solar Update

    The average daily sunspot numbers hardly changed from last week and the week prior, but the average daily solar flux bounced back to about the level it was from two weeks ago: The average daily sunspot numbers were down 5 points to 50.7, while the average
    Learn More

  • latest081612

    08/17/2012 | The K7RA Solar Update

    There was a big drop in solar activity over the past week, with the average daily sunspot numbers declining nearly 42 points to 77.6, and the average daily solar flux down 20 points to 114.7.
    Learn More

  • latest031512

    03/16/2012 | The K7RA Solar Update

    The average daily sunspot numbers over the past reporting week (March 8-14) were 88.3, a rise of nearly 19 points; the average daily solar flux rose more than 12 points to 134.2. Sunspot numbers for March 8-14 were 86, 96, 89, 103, 89, 80 and 75, with a m
    Learn More

  • sunspot4.jpg

    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
    Learn More

  • latest090111

    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
    Learn More