SB PROP @ ARL $ARLP003
ARLP003 Propagation de K7RA

ZCZC AP03
QST de W1AW 
Propagation Forecast Bulletin 3 ARLP003
From Tad Cook, K7RA
Seattle, WA January 19, 2024
To all radio amateurs 

SB PROP ARL ARLP003
ARLP003 Propagation de K7RA

Solar activity increased substantially over the past week, with
twelve new sunspot groups. One appeared on January 11, five more on
January 12, another on January 13, two more on January 15, and three
more on January 16.

Two more sunspot groups emerged on January 18.

Average daily sunspot number rose from 146.1 to 167.3, and solar
flux from 163.3 to 184.1.

Geomagnetic numbers remained low and practically unchanged, with
planetary A index moving from 4.9 to 5, and middle latitude A index
shifting from 4.3 to 3.9.

Predicted solar flux is 162, 160 and 155 on January 19-21, then 150
on
		
		... 
		
			Читать дальше »