SB PROP @ ARL $ARLP045
ARLP045 Propagation de K7RA

ZCZC AP45
QST de W1AW 
Propagation Forecast Bulletin 45 ARLP045
From Tad Cook, K7RA
Seattle, WA November 5, 2021
To all radio amateurs 

SB PROP ARL ARLP045
ARLP045 Propagation de K7RA

Sunspot numbers and solar flux index were both declining by the end
of our reporting week (October 28 through November 3), but averages
for both numbers were higher than reported in last week's
Propagation Forecast Bulletin ARLP044.

Average daily sunspot number increased from 54.9 to 67.6, while
average daily solar flux jumped from 95.7 to 102.

CME activity through the week drove geomagnetic numbers much higher.
Average daily planetary A index increased from 4.4 to 12, and
average daily middle latitude A index went from 3.6 to 9. On
November 4 the planetary A index was 69, and A
		
		... 
		
			Читать дальше »