Big increase in solar activity this week, with average daily sunspot number rising from 129 to 215.9, and solar flux from 176.6 to 226.5.
Fourteen new sunspot groups emerged. Two were on July 11, one on July 12, three on July 13, one on July 14, two more on July 15, three more on July 16 and two more on July 17.
On Thursday (after the reporting week) the daily sunspot number was 276, the highes…
Read more – via ARRL: http://www.arrl.org/news/view/the-k7ra-solar-update-838
More Stories
Radio Asheville launches an emergency alert network built to survive a total blackout, like occurred with Hurricane Helene (North Carolina)
Via the RSGB: Learn about HF propagation studies at the RSGB Convention
Via the RSGB: WRTC 2026 results have been rescored