SB PROP @ ARL $ARLP009
ARLP009 Propagation de K7RA

ZCZC AP09
QST de W1AW 
Propagation Forecast Bulletin 9 ARLP009
From Tad Cook, K7RA
Seattle, WA February 26, 2021
To all radio amateurs 

SB PROP ARL ARLP009
ARLP009 Propagation de K7RA

Sunspots have returned, and solar activity increased every day in
this reporting week. Thursday evening, Spaceweather.com reported
that in a single day, sunspot group AR2804 has doubled in size.

The total sunspot area was 200 millionths of a solar hemisphere, a
level not seen since the end of last year. It actually took two days
to double, Tuesday through Thursday covering 100, 150 and then 200.

Average daily sunspot number increased from 0 to 19.6, while average
daily solar flux rose from 72 to 75.7. Geomagnetic activity was also
higher, with average daily planetary A index increas
		
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