SB PROP @ ARRL $ARLP007
ARLP007 Propagation DE KT7H
QST DE W1AW
Propagation Forecast Bulletin 7  ARLP007
>From Tad Cook, KT7H
Seattle, WA  February 18, 1994
To All Radio Amateurs
 
Unstable geomagnetic conditions finally started settling down this
week.  A very disruptive coronal hole in the Sun's Southern
hemisphere was the cause of all the grief.  Conditions may worsen
again on the day this bulletin is released, and again around March 6
when the recent disruptive region rotates back into view on the
solar disk.
 
Look for flux values to drop after this weekend, reaching a minimum
around 85 on March 2 or 3.
 
For the DX contest this weekend, look for a flux between 100 and
105, and A and K indices dropping after Friday.
 
Sunspot Numbers from February 10 through 16 were 49, 49, 53, 72, 59,
59 and 71, with a mean of 58.9.  10.7 cm flux was 94.2, 93.1, 97.6,
97.8, 101, 103.8 and 104.7, with a mean of 98.9.
 
The path projection for this weekend is from Orem, Utah to Bolivia.
 
80 meters should be open from 0100z to 1030z, with the best signals
around 0300z.  40 meters should be open from 0030z to 1130z, with
the best conditions from 0100z to 1000z.  30 meters should be good
from 2330z to 1200z, with the best signals from 0130z to 1000z.
20 meters should be good after 2200z until 0230z on most days, until
0530z on some days, and on a few days until 0800z.  The peak period
for 20 meters should be from 0000z to 0230z.  17 meters should be
open from 1430z to 0200z, with the best time around 2230z to 0130z.
15 meters should be open from 1530z to 0030z, with the best signals
late in that period.  12 meters looks good from 1600z to 2300z.  The
best signals on 10 meters should be around 1800z, with a possibility
of openings from 1700z to 2200z on most days.  On same days 10
meters could open as early as 1500z and close as late as 0130z.
/EX