February 12, 2025

This Week in Amateur Radio

North America's Premiere Amateur Radio News Magazine

Via the ARRL: The K7RA Solar Update

SB PROP ARL ARLP020
ARLP020 Propagation de K7RA
Solar activity was quiet this week. Average daily sunspot number slipped from 155.1 to 124.6, and average solar flux from 198.9 to 164.8.

Geomagnetic conditions were quiet, with average planetary A index going from 13.9 to 7.9, and middle latitude A index from 11.7 to 9.

Eight new sunspot groups emerged, one on May 23, two on May 25, four on May 26, and one on May 28.

The outlook for the next month predicts solar flux at 175 on May 31 through June 6, then 210, 200, 195, 190, 185 and 180 on June 7-12, 170 on June 13-14, 165 on June 15, 190 on June 16-17, 185 on June 18, then 190 on June 19-20, then 185, 195 and 200 on June 21-23, then 210, 210 and 215 on June 24-26, 225 on June 27-29, 220 on June 30 through July 1, 210 on July 2-4, then 200, 195 and 190 on July 5-7.

Read more – via American Radio Relay League | Ham Radio Association and Resources http://www.arrl.org/news/view/the-k7ra-solar-update-830