SB PROP @ ARL $ARLP042
ARLP042 Propagation de K7RA

ZCZC AP42
QST de W1AW 
Propagation Forecast Bulletin 42 ARLP042
From Tad Cook, K7RA
Seattle, WA October 21, 2022
To all radio amateurs 

SB PROP ARL ARLP042
ARLP042 Propagation de K7RA

Sunspot activity took quite a plunge over this reporting week
(October 13-19). Average daily sunspot numbers declined from 114.9
to 57.3, while equivalent solar flux values went from 155.3 to
119.6.

Geomagnetic indicators were slightly lower, with average planetary A
index going from 13.3 to 10.6, and middle latitude A index from 10.4
to 8.1.

A new sunspot group emerged on October 13, two more on October 15,
another on October 16, one more on October 17, another on October 19
and one more on October 20.

I should note that the middle latitude A index for October 18-19 are
my own est
		
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