Over the past week we saw a decline in solar activity, and the 45-day outlook showed progressively weaker numbers as well.

Average daily sunspot numbers for May 15-21 were 129.4, while the previous average was 142.4, a 13 point decline. Average daily solar flux drifted from 157.5 to 128.5. The daily sunspot number on Wednesday dropped down to 100 and on Thursday it was only 70, a level unseen se…

American Radio Relay League | Ham Radio Association and Resources

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