SB PROP @ ARL $ARLP015
ARLP015 Propagation de K7RA

ZCZC AP15
QST de W1AW 
Propagation Forecast Bulletin 15 ARLP015
From Tad Cook, K7RA
Seattle, WA April 9, 2021
To all radio amateurs 

SB PROP ARL ARLP015
ARLP015 Propagation de K7RA

Sunspots were only visible on four days over the current reporting
week, on April 3-6. And now on Friday morning there are still no
sunspots.

As a result, average daily sunspot number declined from 11.9 last
week to 6.4 currently. Average daily solar flux also dropped from
77.4 to 73.4. On Thursday the daily solar flux was 74, just above
the average for the previous seven days, 73.4. The Sun remained
blank.

Average daily planetary A index declined from 8.9 to 6.6, and
average mid-latitude A index slipped from 7.7 to 5.6.

Predicted solar flux for the next month is 74 on April 9-15, 72 
		
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