Conditions were favorable over Field Day weekend, with the exception of a brief period where planetary K index was at 5 on Saturday night.
There were five new sunspot groups on June 23, two more on June 24, another on June 26, and another on June 27.
Average daily sunspot numbers were up, and solar flux was down.
The average daily sunspot number rose from 143 to 170, and the average daily solar flux declined slightly from 165.4 to 160.3.
This was unexpected because we normally see these values track together.
Predicted solar flux is 155 on June 29; 150 on June 30 through July 4; 145 on July 5; 135 on July 6 – 8; 145, 155, 160, 165, and 170 on July 9 – 13; 175 on July 14 – 18; 170 on July 19 – 21; 160, 150, 145, 145, 140, and 135 on July 22 – 27, and 130 on July 28 – 31.
Predicted planetary A index is 5 on June 29 – 30; 15 and 10 on July 1 – 2; 5 on July 3 – 7; 12 and 8 on July 8 – 9; 5 on July 10 – 11; a stormy 20 and 30 on July 12 – 13; 8 on July 14 – 23; 12 on July 24 – 25, and 8 on July 26 – 27.
Read about the cycle peak and see images at https://bit.ly/3ps6iOI.
Check out a useful glossary for space weather terms at https://bit.ly/3XuimeQ.
Sunspot numbers for June 22 – 28, 2023, were 176, 194, 200, 180, 158, 141, and 141, with a mean of 170. 10.7-centimeter flux was 173.2, 169.7, 160.8, 154.8, 157.7, 151.2, and 154.9, with a mean of 160.3. Estimated planetary A indices were 8, 9, 16, 15, 11, 8, and 8, with a mean of 10.7. Middle latitude A index was 8, 9, 16, 10, 11, 7, and 8, with a mean of 9.9.