SB PROP @ ARRL $ARLP017
ARLP017 Propagation DE KT7H
QST DE W1AW
Propagation Forecast Bulletin 17  ARLP017
From Tad Cook, KT7H
Seattle, WA  April 29, 1994
To All Radio Amateurs

With steadily decreasing geomagnetic activity, HF Conditions
improved considerably last week.  A indices dropped below ten, and
remained in the single digits.  Solar activity was low, but the
quieter geomagnetic conditions made propagation much better.

Unfortunately, a return to active geomagnetic conditions is forecast
for the near term.  Returning coronal holes rotating back on to the
solar surface are expected to throw HF bands into havoc over the
next few days.  Disturbed conditions should gradually decline after
May 1, but may not reach normal until the middle of May.  Solar flux
should rise gradually, peaking near 100 around May 7 through 11.

Sunspot Numbers from April 21 through 27 were 53, 64, 54, 72, 60, 50
and 58, with a mean of 58.7.  10.7 cm flux was 86.7, 85.4, 85.2,
83.4, 82.8, 81 and 78, with a mean of 83.2.

The path projection for this week is a special Hamvention edition
for Saturday, April 30 from the Hara Arena in Dayton, Ohio to
Honolulu, Hawaii.

80 meters should be open from 0430z to 1130z.  Conditions should
peak around 0630z, and remain strong until 1030z.  40 meters looks
good from 0400z to 1200z, peaking from 0530z to 1000z.  Check 30
meters from 0300z to 0800z, and again from 1100z to 1400z.  20
meters should be open from 0100z to 0530z.  Check 20 again around
1500z to 1600z.  17 meters may have an opening around 2000z to
2200z.  10, 12 and 15 meters do not look good this weekend.
/EX