Tad Cook, K7RA, of Seattle, Washington, reports for this week’s ARRL Propagation Bulletin:
Solar activity perked up this week. The average daily sunspot number rose from 58.4 to 70.3, and solar flux averages increased from 113.3 to 129.9.
There are still problems with the Fredericksburg magnetometer, so I did my own rough estimate of middle-latitude numbers. I wish I could substitute the Boulder numbers, but I cannot find a source for the data outside of purely graphic representations.
https://www.swpc.noaa.gov/products/station-k-and-indices
Planetary A index averages went from 19.4 to 13.7, and middle latitude estimated numbers changed from 9.1 to 12.6.
The solar flux prediction shows the highest values over the next week, starting with 130 on November 3 – 4; 135, 130, 135, 130, and 135 on November 5 – 9; 115 on November 10 – 12; 112 on November 13 – 14; 110 on November 15; 108 on November 16 – 18; 104 on November 19; 100 on November 20 – 23; 98 on November 24 – 25; 100, 105, 105, and 110 on November 26 – 29; 112 on November 30 through December 2, and 118 on December 3 – 6.
Predicted planetary A index is 12 on November 3 – 4; 20, 15, and 8 on November 5 – 7; 5 on November 8 – 9; 18, 18, and 15 on November 10 – 12; 5 on November 13 – 17; 25, 15, and 8 on November 18 – 20; 5 on November 21 – 22; 8, 15, and 25 on November 23 – 25; 15 on November 26 – 27; 18, 12, 10, 12, 20, and 15 on November 28 through December 3, and 5 on December 4 – 6.
New
videos from Dr. Tamitha Skov, WX6SWW:
https://youtu.be/gO0wP6eiS8I
Part 3 of her mini-course:
Sunspot numbers for October 27 through November 2, 2022, were 72, 87, 97, 68, 56, 63, and 49, with a mean of 70.3. The 10.7-centimeter flux was 129.7, 129.3, 133.9, 130.5, 127.9, 128.1, and 129.7, with a mean of 129.9. Estimated planetary A indices were 9, 16, 26, 12, 11, 8, and 14, with a mean of 13.7. Middle latitude A index was 6, 15, 24, 14, 12, 6, and 11, with a mean of 12.6
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A comprehensive K7RA Solar Update is posted Fridays on the ARRL website. For more information concerning radio propagation, visit the ARRL Technical Information Service, read “What the Numbers Mean…” and check out the Propagation Page of Carl Luetzelschwab, K9LA.
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