Tad Cook, K7RA, Seattle, reports:

New sunspot group 2739 appeared on April 17, and the daily sunspot number rose to 24. The new sunspot’s polarity indicates that it’s still part of Cycle 24, the current sunspot cycle. This reporting week (April 11 – 17) the average daily sunspot number rose from 6.9 to 14, while average daily solar flux increased from 75.4 to 76.4. Geomagnetic indicators were quieter, with the average planetary A index declining from 10.6 to 6.4.

Predicted solar flux for the next 45 days is 76, 74, and 72 on April 18 – 20; 70 on April 21 – 23; 68 on April 24; 69 on April 25 – 26; 70 and 69 on April 27 – 28; 71 on April 29 – 30; 70 on May 1; 72 on May 2 – 3; 77 on May 4; 79 on May 5 – 6; 78, 79, and 77 on May 7 – 9; 78 on May 10 – 17; 71 on May 18 – 19; 69 and 68 on May 20 – 21; 69 on May 22 – 23; 70 and 69 on May 24 – 25; 71 on May 26 – 27; 70 on May 28; 72 on May 29 – 30, and 77 and 79 on May 31 – June 1.

Predicted planetary A index is 5 on April 18 – 26; 10, 8, and 5 on April 27 – 29; 10 on April 30 – May 2; 7, 5, and 13 on May 3 – 5; 10, 14, and 7 on May 6 – 8; 8 on May 9 – 10; 5 on May 11 – 20; 10, 8, and 5 on May 21 – 23; 10, 8, and 5 on May 24 – 26; 10 on May 27 – 29, and 7, 5, and 13 on May 30 – June 1.

Jon, N0JK, reports that summer sporadic-E season began on April 14, when he copied K2PL and KE3QZ in Kansas on 6 meters.
Sunspot numbers for April 11 – 17 were 13, 14, 14, 11, 11, 11, and 24, with a mean of 14. The 10.7-centimeter flux was 78.5, 77.3, 77.9, 75.4, 75.4, 74.2, and 76.1, with a mean of 76.4. Estimated planetary A indices were 7, 9, 8, 4, 8, 6, and 3, with a mean of 6.4. Middle latitude A index was 6, 7, 7, 3, 8, 6, and 3, with a mean of 5.7.

ARRL News Letter on April 18, 2019