SB PROP @ ARL $ARLP040
ARLP040 Propagation de K7RA

ZCZC AP40
QST de W1AW 
Propagation Forecast Bulletin 40 ARLP040
From Tad Cook, K7RA
Seattle, WA October 1, 2021
To all radio amateurs 

SB PROP ARL ARLP040
ARLP040 Propagation de K7RA

Sunspot activity was up over the past week, with the average daily
sunspot number rising from 28.7 to 59.4, and average daily solar
flux up 11.4 points to 89.8.

The noon 10.7 cm solar flux was 101.6 on Wednesday, September 29,
the highest value since December 3, 2020, when it was 102.9.
Unfortunately, the following day that value slipped seven whole
points back to 94.6

Geomagnetic indicators were quiet, with average daily planetary A
index values declining from 9.1 to 7.3, and average middle latitude
A index from 8.4 to 6.3.

Nice to see our Sun peppered with spots again as we move i
		
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