A Spectacular Solar Flare Fire Plume & New Bright Regions Read more
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Tad Cook, K7RA, Seattle, reports: Sunspots returned on October 9 – 12, with sunspot numbers of 24, 26, 15 and 15. No sunspot appeared on October 13, but late on Wednesday, October 14, Spaceweather.com reported a new emerging Solar Cycle 25 spot on our sun’s southeastern limb, and a daily sunspot number of 12. The next day, […] Read more
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Tad Cook, K7RA, Seattle, reports: Geomagnetic activity quieted down over the October 1 – 7 reporting week. Compared to the previous 7 days, average daily mid-latitude A index declined from 15.6 to 6, and average planetary A index slipped from 22 to 7.1. There were no sunspots this week and only one in the previous […] Read more
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Solar physicist Leif Svalgaard of the W.W. Hansen Experimental Physics Laboratory at Stanford University has predicted a maximum sunspot number of 128 ±10, slightly better than Solar Cycle 24. “The overall average is 132 ±47 (median 124),” he said. “None of these numbers are substantially different, so one could perhaps just go with the ‘wisdom of the […] Read more
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https://www.youtube.com/watch?v=Vvv8gseN0Gc Read more
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Tad Cook, K7RA, Seattle, reports: Solar wind disturbed HF conditions over the September 24 – 30 reporting week. Average daily planetary A index rose from 5.1 to 22, while average middle latitude A index went from 5 to 15.6. Average daily sunspot number declined from 1.9 to 1.6; a weak sunspot appeared on only two […] Read more
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This split image shows the difference between an active Sun during solar maximum (on the left, captured in April 2014) and a quiet Sun during solar minimum (on the right, captured in December 2019). December 2019 marks the beginning of Solar Cycle 25, and the Sun’s activity will once again ramp up until solar maximum, […] Read more
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https://www.youtube.com/watch?v=dYibU6gy3yw Read more
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Solar Update 09/11/2020 Tad Cook, K7RA, Seattle, reports: An extended lull in solar activity persists. The smoothed sunspot minimum occurred last December, but the flurry of moderate sunspot activity in August has not continued. An event to look forward to is the autumnal equinox, which occurs at 1330 UTC on Tuesday, September 22. We should […] Read more
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Tad Cook, K7RA, Seattle, reports: As of Thursday night, no sunspots have appeared for the past 13 days. I know we are all hoping for more sunspots, and I’m sure they’ll be returning soon; the trends for this newly awakening solar cycle favor it. One event to look forward to this month is the autumnal […] Read more
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