SB PROP @ ARL $ARLP018
ARLP018 Propagation de K7RA
ZCZC AP18
QST de W1AW
Propagation Forecast Bulletin 18 ARLP018
From Tad Cook, K7RA
Seattle, WA May 1, 2020
To all radio amateurs
SB PROP ARL ARLP018
ARLP018 Propagation de K7RA
There were several sunspot appearances this week. Sunspot numbers on
April 25 to 29 were 11, 14, 12, 0 and 24, giving a weekly average of
8.7. Average daily solar flux changed from 69 to 69.2.
Geomagnetic activity remains quiet, with average daily planetary A
index declining from 7.3 to 5.6.
On Thursday, new sunspot activity continued, with the daily sunspot
number for April 30 at 35, and the total sunspot area four times
what it was on April 25 to 27. This new activity is both encouraging
and exciting.
Predicted solar flux is 70 on May 1 to 5, 69 on May 6 to 16, 70 on
May 17 to 31,
...
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