The K7RA Solar Update
Tad Cook, K7RA, Seattle, reports: Average daily sunspot numbers were
28.3 during the July 6-12 reporting week, up from 8 during the previous
week. Average daily solar flux increased from 71.7 to 87.
Average planetary A index rose from 7.1 to 9.1, and average mid-latitude A index bumped up from 8.3 to 9.6.
Predicted solar flux is 90 on July 13-16; 88, 85, and 80 on July 17-19;
85 on July 20-28; 90 on July 29-30; 85 on July 31-August 5; 87 on August
6-11; 85 on August 12-24, and 90 on August 25-26.
Predicted planetary A index is 5, 15, and 12 on July 13-15; 8 on July
16-17; 12, 8, and 5 on July 18-20; 11 on July 21-22; 5 on July 23-August
4; 25, 18, 12, 15, and 10 on August 5-9; 5 on August 10-13; 12, 10, and
5 on August 14-16; 11 on August 17-18, and 5 on August 19-26.
Twin Cities TV station KARE recently aired a story about the largest sunspot of 2017.
Sunspot numbers for July 6-12 were 16, 25, 24, 31, 32, 27, and 43, with a
mean of 28.3. The 10.7-centimeter flux was 75.9, 79.5, 86.6, 90.9,
95.1, 91.1, and 90.2, with a mean of 87. Estimated planetary A indices
were 7, 5, 3, 28, 9, 8, and 4, with a mean of 9.1. Estimated
mid-latitude A indices were 8, 5, 3, 26, 11, 9, and 5, with a mean of
9.6.
