If you think Solar Cycle 24 is weaker and still progressing slower than previous solar cycles? You are correct. For a comparison of Solar Cycles 21, 22, 23 and 24, click
here for more.
Solar activity rose this week, with the average daily sunspot number rising more than 40 points to 66 points, while the average daily solar flux rose more than 13 points to 101.9. Sunspot numbers for August 18-24 were 53, 46, 59, 66, 82, 81 and 75, with a mean of 66. The 10.7 cm flux was 97.8, 98.2, 100.5, 100.9, 108.2, 103.7 and 104.1, with a mean of 101.9. The estimated planetary A indices were 3, 2, 5, 3, 7, 9 and 6, with a mean of 5. The estimated mid-latitude A indices were 1, 1, 4, 3, 5, 8, and 5, with a mean of 3.9.
The predicted solar flux for August 26 is 110, rising to 115 for August 27-28, 110 for August 29 to September 1, 105 for September 2-3, 100 for September 4-5, 95 on September 6-7 and bottoming out at 90 on September 8-12. The next peak of activity is predicted for September 22-23. The predicted planetary A index is 5 for August 26-27, 10 on August 28, 8 on August 29, and 5 on August 30-September 2, then 8 on September 3, 10 on September 4-6, 7 on September 7, and 5 on September 8-10. Geophysical Institute Prague predicts quiet conditions for August 26, unsettled on August 27-28, quiet to unsettled August 29 and quiet conditions on August 30 through September 1.