SB PROP @ ARL $ARLP038
ARLP038 Propagation de KT7H
 
ZCZC AP52
QST de W1AW  
Propagation Forecast Bulletin 38  ARLP038
From Tad Cook, KT7H
Seattle, WA  September 16, 1994
To all radio amateurs 
 
SB PROP ARL ARLP038
ARLP038 Propagation de KT7H
 
Solar activity was down a bit this week.  Geomagnetic disturbances
dominated the start of the period, but tapered off steadily,
starting with K indices of four and five, and ending at one and two.
A solar flare on September 11 could produce some disturbed
conditions on the day that this bulletin is released.  Disturbances
are not expected again until October 4 through 7 when a recurring
coronal hole returns.  
 
Solar flux should rise again, peaking around 90 from September 21
through 24.  Then it should drop below 80 once more during the first
week in October.
 
Look for the best Fall conditions on HF about a week from now, when
we are close to the equinox and the solar flux is peaking around 90
or above.
 
Sunspot Numbers for September 8 through 14 were 67, 56, 37, 58, 24,
12 and 11, with a mean of 37.9.  10.7 cm flux was 89.1, 87.1, 81.7,
81, 77.2, 75.5 and 74, with a mean of 80.8.
 
The path projection for this week is from San Francisco, California
to Laos.
 
80 meters looks good from 1130 to 1400z, and 40 meters from 1030 to
1430.  Check 30 meters from 1430 to 1600, although on many days it
should open as early as 1000.  20 meters should be strong from 1600
to 1800, and on many days may open a half hour earlier and close as
late as 2000.  17 meters looks good from 2300 to 0400, and 15 meters
looks best around 2330 to 0100, and possibly until 0300.  12 and 10
meters do not look good at this time, but if the solar flux turns
up, check these bands around 2330 to 0130.  On rare occasions they
could stay open until 0400.
NNNN
/EX