Propagation de K7RA

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SB PROP @ ARL $ARLP041
ARLP041 Propagation de K7RA

ZCZC AP41
QST de W1AW 
Propagation Forecast Bulletin 41 ARLP041
From Tad Cook, K7RA
Seattle, WA October 12, 2018
To all radio amateurs 

SB PROP ARL ARLP041
ARLP041 Propagation de K7RA

Last week this bulletin reported a return of sunspot activity on
September 29 after a 16 day absence from September 13-28, but the
new activity only lasted 6 days. As of Thursday night (October 11)
we are now at 7 days with no sunspots visible.

Average daily sunspot number declined from 9.6 to 1.6, while average
daily solar flux rose slightly from 68.4 to 68.9.

Average planetary A index increased from 7.7 to 14.1, while
mid-latitude A index rose from 6.1 to 10.3.

Predicted solar flux is 71 on October 12, 70 on October 13-18, 69 on
October 19 through November 25.

Predicted planetary A index is 8, 5, 12 and 8 on October 12-15, 5 on
Octo
		
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