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Both sunspot numbers and solar flux were higher this week, with the
average daily sunspot number nearly doubling to 71R3 and average
solar flux up over 10 points to 93R8. These numbers are compared to
the average for the previous reporting week. This weeks numbers are
in the last paragraph of this bulletin. But earth passed through a
solar wind stream, sparking auroras, and by Monday the planetary A
index was 67, indicating a strong geomagnetic storm. But the effect
was not as large as the storm during mid May. For this weekend, the
predicted planetary A index is 15, followed by 10 for Saturday
through Monday. After which predicted solar flux should drop below
95 and possibly stay there until around the end of the month. The
Prague Geophysical Institute sent a forecast showing active
conditions, unsettled, quiet to unsettled and quiet conditions. Roy
Erismann, HB9BJJ sent news of a new book on propagation. It is
titled, Space Weather and Telecommunications, by John M. Goodman.
The book is very expensive, so I am trying to get it locally via
interlibrary loan. If anyone has read it and would like to comment,
Id like to hear any reviews. Sunspot numbers were 72, 51, 71, 55,
76, 79 and 95 with a mean of 71R3. 10R7 cm flux was 90R4, 95R5,
92R5, 92R7, 94R9, 96R3 and 94R3, with a mean of 93R8. Estimated
planetary A indices were 4, 4, 13, 22, 67, 17 and 8 with a mean of
19R3. Estimated mid latitude A indices were 1, 1, 9, 16, 32, 10 and
5, with a mean of 10R6‚

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