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 14, 2022
To all radio amateurs 

SB PROP ARL ARLP041
ARLP041 Propagation de K7RA

Average daily sunspot numbers and solar flux increased this week,
with sunspot numbers going from 111.4 to 114.9, and flux values from
149.2 to 155.3.

A feel-good exercise is to compare these numbers with a year ago,
when the sunspot reading in 2021 Propagation Forecast Bulletin
ARLP041 was only 30.7 and flux was 86.9. Solar Cycle 25 progression
is better than predicted.

October 9 saw a planetary A index reading of 25. On that day
Spaceweather.com warned that sunspot AR3112 had a delta-class
magnetic field with energy for strong solar flares.

The next day they posted movies of two 
		
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