Average daily sunspot numbers declined over the past reporting week (March 27 to April 2) from 135.6 to 130.4, compared to the previous seven days. Likewise, average daily solar flux drifted lower, from 153.2 to 149.

The current prediction (from USAF/NOAA on April 3) has solar flux at 155 on April 4, 160 on April 5-8, 150 on April 9-10, 140 on April 11, 135 on April 12-13, then 140 and 145 on Ap…

American Radio Relay League | Ham Radio Association and Resources

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