Geomagnetic Disturbance

Friday July 28th, a high speed solar wind stream made it's way to hit Earth
and caused a major geomagnetic disturbance that caused the planetary
and mid-latitude A index to soar to 29 and 26. The K index soared to 6.
This caused periods of high absortion and propagation to seemingly
go only north to south.

Sunspot numbers still are still above the numbers recorded at the previous
minimum in 1996. The current minimum is expected to occur in Jan 2007 with a sunspot number of 5.


The average daily sunspot numbers for the months July 2005 through July
2006 were 68.7, 65.6, 39.2, 13, 32.2, 62.6, 26.7, 5.3, 21.3, 55.2, 39.6,
24.4 and 22.6. Average daily solar flux for the same months was 96.5, 92.4 ,
91.9, 76.6, 86.3, 90.8, 83.4, 76.5, 75.5, 88.9, 80.9, 76.5 and 75.8.

Sunspot numbers for July 27 through August 2 were 23, 17, 19, 23, 25,
11 and 22 with a mean of 20. 10.7 cm flux was 74.4, 72.6, 73, 73.9, 72.4,
72.8, and 72.1, with a mean of 73. Estimated planetary A indices were 9, 29,
5, 5, 12, 12 and 10 with a mean of 11.7. Estimated mid-latitude A indices were
5, 26, 3, 3, 11, 9 and 7, with a mean of 9.1.