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 14, 2023
To all radio amateurs 

SB PROP ARL ARLP015
ARLP015 Propagation de K7RA

Solar activity was up for this reporting week, April 6-12.

Seven new sunspot groups appeared, one on April 6, another on April
9, two more on April 10, another on April 11, and two more on April
12. Then on Thursday, April 13, three new sunspot groups emerged.
The sunspot number rose to 154, the highest value in the past month.

Average daily sunspot number rose from 53.4 to 70.6, and average
daily solar flux increased from 132.5 to 141.

On Thursday, the noon solar flux reading was 159.5 and was well
above the average for the previous seven days, perhaps indicating an
upward trend.

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