Post by Renae/k9do on Sept 24, 2021 14:57:14 GMT
Predicted solar flux for the next month is 90 and 92 on September 24-25, 95 on September 26-29, 92 on September 30, 84 on October 1-5,
82 on October 6, 80 on October 7-8, 78 on October 9-11, 75 on October 12-20, 80 on October 21-22, 82 on October 23-25, 84 and 82
on October 26-27, and 84 on October 28 through November 1.
Predicted planetary A index is 15, 8 and 20 on September 24-26, then 35, 20 and 12 on September 27-29, 5 on September 30 through October
3, 8 and 12 on October 4-5, 5 on October 6-9, 12 on October 10, 5 on October 11-17, 8 on October 18-19, then 10, 8 and 12 on October
20-22, 10 on October 23-24, and 5 on October 25-30, then 8 and 12 again on October 31 through November 1.
The northern Autumnal Equinox occurred at 1920 UTC on September 22.Earth is bathed in approximately equal amounts of solar radiation
over the northern and southern hemispheres, always a good sign for HF propagation.
Spaceweather.com reported on September 23 that at 0442 UTC sunspot group AR2871 produced a strong M3 class solar flare. A coronal mass
ejection is headed our way, but not directly toward Earth. "A glancing blow might be possible on September 26-27." If so, then the
predicted planetary A index of 35 on September 27 may turn out to be a lower number.
Sunspot numbers for September 16 through 22, 2021 were 0, 0, 11, 13, 51, 50, and 76, with a mean of 28.7. 10.7 cm flux was 73.2, 73.4,
73.7, 75, 80, 84.9, and 88.5, with a mean of 78.4. Estimated planetary A indices were 3, 24, 11, 3, 3, 8, and 12, with a mean of
9.1. Middle latitude A index was 3, 19, 14, 2, 4, 6, and 11, with a mean of 8.4.
82 on October 6, 80 on October 7-8, 78 on October 9-11, 75 on October 12-20, 80 on October 21-22, 82 on October 23-25, 84 and 82
on October 26-27, and 84 on October 28 through November 1.
Predicted planetary A index is 15, 8 and 20 on September 24-26, then 35, 20 and 12 on September 27-29, 5 on September 30 through October
3, 8 and 12 on October 4-5, 5 on October 6-9, 12 on October 10, 5 on October 11-17, 8 on October 18-19, then 10, 8 and 12 on October
20-22, 10 on October 23-24, and 5 on October 25-30, then 8 and 12 again on October 31 through November 1.
The northern Autumnal Equinox occurred at 1920 UTC on September 22.Earth is bathed in approximately equal amounts of solar radiation
over the northern and southern hemispheres, always a good sign for HF propagation.
Spaceweather.com reported on September 23 that at 0442 UTC sunspot group AR2871 produced a strong M3 class solar flare. A coronal mass
ejection is headed our way, but not directly toward Earth. "A glancing blow might be possible on September 26-27." If so, then the
predicted planetary A index of 35 on September 27 may turn out to be a lower number.
Sunspot numbers for September 16 through 22, 2021 were 0, 0, 11, 13, 51, 50, and 76, with a mean of 28.7. 10.7 cm flux was 73.2, 73.4,
73.7, 75, 80, 84.9, and 88.5, with a mean of 78.4. Estimated planetary A indices were 3, 24, 11, 3, 3, 8, and 12, with a mean of
9.1. Middle latitude A index was 3, 19, 14, 2, 4, 6, and 11, with a mean of 8.4.