Tad Cook, K7RA, Seattle, reports:

We saw another week with no sunspots, which were last seen just briefly more than 2 weeks ago on March 8 – 9. Spaceweather.com reports that, so far in 2020, the percentage of days without sunspots (76%) is about the same as all of 2019, when it was 77%.

Average daily solar flux inched up from 70.1 to 71.1. Geomagnetic indicators remain quiet, with average planetary A index at 7.7, a little higher than the previous week’s 5.9 average. Average mid-latitude A index was also 5.9, up from 4.1 last week.

Predicted solar flux for the next 45 days is 71 on March 26 – April 2; 70 on April 3 – 4; 72 on April 5 – 18; 70 on April 19 – May 1, and 72 on May 2 – 9.

Predicted planetary A index is 5 on March 26 – 29; 12 on March 30 – 31; 8 on April 1; 5 on April 2 – 5; 10 and 8 on April 6 – 7; 5 on April 8 – 13; 8, 12, and 8 on April 14 – 16; 5 on April 17 – 22; 12 and 8 on April 23 – 24; 5 on April 25 – May 2; 10 and 8 on May 3 – 4, and 5 on May 5 – 9.

Sunspot numbers for March 19 – 25 were 0, 0, 0, 0, 0, 0, and 0, with a mean of 0. The 10.7-centimeter flux was 72.1, 71.7, 70.8, 70.2, 70.4, 71.2, and 71.2, with a mean of 71.1. Estimated planetary A indices were 12, 7, 8, 7, 12, 4, and 4, with a mean of 7.7. Middle latitude A index was 7, 5, 5, 7, 10, 4, and 3, with a mean of 5.9.

ARRL News Letter on March  26, 2020