‰ Now 18 WPM transition file follows ‰

Solar activity continues to be weak, although there was an uptick on
September 18 and 19 when solar flux rose to 104.1, then 107.9.
September 18 was the first day with solar flux above 100 since
September 6.  Average daily sunspot number for the reporting week,
September 12 to 18, rose to 42.3, up from 37.7 for the previous
seven days. The daily sunspot number on September 18 and 19 rose
from 59 to 85.  Average daily solar flux dipped slightly, from 98.2
to 95.3 over the same seven day period. Average daily planetary A
index and mid latitude A index were both 6.3.  For the near term,
solar flux is predicted at 110 on September 20 to 22, 105 on
September 23 and 24, 100 on September 25 to 30, 95 on October 1 to
13, and 100 on October 14 to 27. Over the past few days all of the
short term predictions for solar flux have been adjusted downward.
Predicted planetary A index is 8 on September 20, 5 on September 21
and 22, 8 on September 23 and 24, 5 on September 25 and 26, 8 on
September 27, 12 on September 28, 5 on September 29 through October
9, then 10, 8, 5, 15, 10 and 8 on October 10 to 15, followed by 5 on
October 16 to 18.  OK1HH sent us another geomagnetic forecast, and
he thinks the geomagnetic field will be quiet to unsettled on
September 20 and 21, mostly quiet September 22, quiet to unsettled
on September 23, quiet on September 24 and 25, mostly quiet
September 26, active to disturbed September 27, quiet to active
September 28, mostly quiet September 29 and quiet on September 30.
It will be quiet to active October 1, quiet on October 2 to 5, quiet
to unsettled October 6 and 7, mostly quiet October 8, and active to
disturbed October 9.  OK1HH also says a growing solar wind may cause
remarkable changes in the magnetosphere and ionosphere on September
20 and 21, and on September 24.  The Autumnal Equinox is just a
couple of days away. Fall officially begins in the Northern
Hemisphere on Sunday, September 22 at 2044 UTC.  Check out this
science blog, with observation about the current weak cycle at,
//www.science20.com/.  Sunspot numbers were 58, 40, 24, 12, 23, 80,
and 59, with a mean of 42.3. 10.7 cm flux was 92.9, 91.6, 92.5,
92.8, 94.5, 98.7, and 104.1, with a mean of 95.3. Estimated
planetary A indices were 7, 9, 6, 2, 5, 8, and 7, with a mean of
6.3. Estimated mid latitude A indices were 5, 10, 6, 3, 6, 8, and 6,
with a mean of 6.3.


‰ End of 18 WPM transition file ‰