ARRL

ARRL Propagation Bulletin ARLP036 (1996)

SB PROP @ ARL $ARLP036
ARLP036 Propagation de KT7H

ZCZC AP56
QST de W1AW
Propagation Forecast Bulletin 36  ARLP036
From Tad Cook, KT7H
Seattle, WA  August 30, 1996
To all radio amateurs

SB PROP ARL ARLP036
ARLP036 Propagation de KT7H

Solar activity was up last week.  The daily solar flux was above the
average for the past 90 days on each day over the past seven.  The
90 day average also moved up a point from 70 to 71.  Average solar
flux was up six points from the previous week, and average sunspot
numbers were up one point.

Due to a recurring coronal hole, geomagnetic indices have been
unstable for the past day, and are expected to continue that way,
slacking off toward September 1.

Look for solar flux to drop to 70 by September 3, and drop below 70
around September 11, rising above 70 again a week later, and to the
mid seventies around September 23.  Moderately unstable geomagnetic
conditions are expected to return then as well.

Sunspot Numbers for August 22 through 28 were 12, 24, 22, 14, 16, 13
and 13, with a mean of 16.3.  10.7 cm flux was 72.8, 74.2, 74.6,
74.7, 74.2, 74.3, and 73.3, with a mean of 74.
NNNN
/EX