‰  NOW 18 WPM transition file follows‰

Solar flux and sunspot numbers moved in opposite directions over the
past week, and differences were more extreme than usual. Normally we
expect daily sunspot numbers and solar flux to track together, and
geomagnetic indices to track with each other as well, at least
approximately.  Average daily sunspot numbers over the past
reporting week, November 10 to 16, rose 10 points from 18.7 to 28.7,
while average daily solar flux dropped from 76.9 to 45.8. These
comparisons express differences from the previous reporting week,
November 3 to 9.  Over the same dates average planetary A index
increased markedly from 6.4 to 12.7, while the mid latitude A index
changed from 4.3 to 10.1.  Predicted solar flux values for the near
future are 79 on November 18, 78 on November 19, 80 on November 20
and 21, 78 on November 22 to 26, 80 on November 27, 82 on November
28 through December 1, 84 on December 2, 82 on December 3 to 7, 80
on December 8 and 9, 78 on December 10, 75 on December 11 to 15, 77
on December 16, 75 on December 17 to 21 and 78 on December 22 and
23.  The predicted planetary A index is 5, 16 and 18 on November 18
to 20, then 10, 48, 48, 36, and 28 on November 21 to 24, then 25,
18, 12, 10 and 8 on November 23 to 29, then 5 on November 30 til
December 6, then 15, 12, 18, 20, 15 and 10 on December 7 to 12 and 5
on December 13 to 15, then 10, 15, 55, 45, and 25 on December 16 to
20, then 18, 25, 18, 12, 10 and 8 on December 21 to 26, and 5 over
the following week.  Spacewather.com reports the solar cycle is
currently at the lowest level in 5 years.  An expansion of Space
Weather Services was announced at, //bit.ly/2fk4Mot .  Petr Kolman,
OK1MGW of the Czech Propagation Interest Group sent his geomagnetic
activity forecast for the period November 18 to December 14, 2016.
Amplifications of the solar wind from coronal holes are expected on
November 20 to 26, December 7 to 10.  For more information
concerning radio propagation, see the ARRL Technical Information
Service web page.  A detailed explanation of the numbers used in
this bulletin is also available on this site.  An archive of past
propagation bulletins is also available.  Monthly propagation charts
between four USA regions and twelve overseas can be found on the
W1AW web site.  Find more good information and tutorials on
propagation on the k9la web site.  The multiple websites mentioned
in this bulletin can be found in teleprinter, packet and Internet
versions of 2016 Propagation Forecast Bulletin ARLP047.  Sunspot
numbers were 13, 26, 51, 38, 26, 29, and 18, with a mean of 28.7.
10.7 cm flux was 80.2, 78.4, 78.4, 77.8, 77.3, 76.5, and 80.9, with
a mean of 45.8. Estimated planetary A indices were 14, 13, 19, 21,
11, 7, and 4, with a mean of 12.7.  Estimated mid latitude A indices
were 11, 10, 13, 19, 8, 7, and 3, with a mean of 10.1.

‰  END OF 18 WPM transition file ƒ