sabato 4 giugno 2016

The K7RA Solar Update

Solar indices barely changed over the past week, with average daily sunspot numbers rising from 25.3 to 33, and average daily solar flux dropping from 97 to 87.4.

Average daily planetary A index rose from 7.1 to 8.9, and average daily mid-latitude A index rose from 7 to 9.

Predicted solar flux for the near term is 80 on June 3-7, 85 on June 8-10, 80 on June 11-17, 85 on June 18-21, 80 on J une 22-26, 75 on June 27 through July 4, and 80 on July 5-14.

Predicted planetary A index is 10, 35, 32, 15 and 8 on June 3-7, 5 on June 8-10, 12 on June 11-13, 8 on June 14-15, then 5, 15 and 10 on June 16-18, 5 on June 19-22, then 10, 12, 8, 20 and 12 on June 23-27, 5 on June 28-29, then 8, 15, 20 and 15 on June 30 through July 3, then 5 on July 4-7 and 12 on July 8-10 and 8 on July 11-12.


F.K. Janda, OK1HH sent us his geomagnetic activity forecast for the period June 3-29, 2016:

Geomagnetic field will be:
Quiet on June 9, 20, 22.
Mostly Quiet on June 8, 15-17, 21, 2 3, 29.
Quiet to Unsettled on June 7, 10, 13-14, 28.
Quiet to Active on Jun 3-4, 5-6, 11-12, 19, 24-25, 26-27.
Active to Disturbed on June 18.

Increases in solar wind from coronal holes are expected on June (6 -)7-8, (14 -)16-17, (26, 30)

Remarks:
- Parenthesis means lower probability of activity enhancement.
- Reliability of predictions is slightly reduced.


Some interesting tools for examining sunspot data:


Also, a paper about the same:

 
(ARRL)