SB PROP @ ARL $ARLP037
ARLP037 Propagation de K7RA

ZCZC AP37
QST de W1AW 
Propagation Forecast Bulletin 37 ARLP037
From Tad Cook, K7RA
Seattle, WA September 16, 2022
To all radio amateurs 

SB PROP ARL ARLP037
ARLP037 Propagation de K7RA

Solar activity bounced back this reporting week, September 8-14,
when average daily sunspot numbers jumped from 68 to 92.7, and
average solar flux from 125.8 to 141.3.

Fewer CMEs and flares were evident, with average planetary A index
declining from 24.6 to 10.7, and middle latitude numbers from 17.4
to 10.6.

New sunspot groups appeared, one on September 8, three on September
10, and one more on September 13. Total sunspot area (in millionths
of a solar disc) on September 12-14 rose from 370 to 870 to 1240,
the highest value in over a month.

The sunspot number was highest on Sept
		
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