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05/11/2012 | The K7RA Solar Update
The average daily solar flux for the past week rose slightly, 116.2 to 119, but the average daily sunspot numbers declined more than 14 points (about 13 percent), to 92.6. Sunspot numbers for May 3-9 were 107, 101, 88, 104, 79, 90 and 79, with a mean of 9
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03/06/2012 | Active Sunspot Region 1429 Produces Solar Flares, Coronal Mass Ejections
An X-1.1 class solar flare erupted from the Sun on Sunday, March 4 at 11:13 PM EST (0413 UTC March 5), sending an explosion of plasma and charged particles -- a coronal mass ejection (CME) -- hurtling through space. Forecasters at NOAA’s Space Weather Pre
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09/16/2011 | The K7RA Solar Update
Although the average daily sunspot numbers are lower -- down nearly 13 points to 91.7 -- the average daily solar flux is higher by 6.7 points, rising to 122.2. Yes, solar activity is rising rapidly. You could see it coming earlier this week by glancing at
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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
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08/09/2011 | Solar Explosions Could Impact Earth
The National Oceanic and Atmospheric Administration (NOAA) is keeping an eye on a set of solar storms and explosions that could disrupt satellite, telecommunications and electric equipment here on Earth in the next few days. While activity had reportedly
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10/15/2010 | The K7RA Solar Update
Solar activity dropped again this week, although it is now gradually strengthening. The average daily sunspot numbers declined nearly 16 points to 11.7, and average daily solar flux dropped more than 5 points to 75.8. Over the next two weeks, the solar fl
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Feature
05/28/2010 | Surfin’: Online HF Propagation ApplicationThis week, Surfin’ kicks the tires on a cool new online HF propagation tool.
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05/14/2010 | The K7RA Solar Update
This lack of sunspots is bothersome. Thursday -- May 13 -- is the fifth day in a row with no spots, and there is no sign of any change. The solar flux has been declining and is now below 70. The predicted solar flux for May 14-19 is 70, then 74 on May 20,
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