Secure Site Login

ARRL Propagation Bulletin ARLP036 (1995)

ARLP036 Propagation de KT7H
QST de W1AW  
Propagation Forecast Bulletin 36  ARLP036
From Tad Cook, KT7H
Seattle, WA  August 25, 1995
To all radio amateurs 
ARLP036 Propagation de KT7H
Average solar flux was unchanged from last week.  The geomagnetic
field was quite stable, with A indices in the single digits and the
K index often at zero.  Solar flux is expected to rise gradually and
only slightly into the mid 70s over to the next couple of weeks, and
then drop off to around 70 or below.  There may be an upset due to
coronal holes around September 5 and 6 and again on the 9th through
the 11th.
The exciting news recently was that the first sunspot of the next
solar cycle was detected.  Although we are probably a year away from
the minimum of solar activity between the two cycles, the first
sunspot of cycle 23 has just been observed.  The spot is identified
as being part of the next solar cycle by looking at the magnetic
polarity of the sunspot.
Sunspot Numbers for August 17 through 23 were 36, 0, 12, 13, 0, 11
and 11, with a mean of 11.9.  10.7 cm flux was 69.8, 71.9, 71.6,
71.3, 71, 70.3 and 74.3, with a mean of 71.5.