SB PROP @ ARL $ARLP017
ARLP017 Propagation de K7RA

ZCZC AP17
QST de W1AW 
Propagation Forecast Bulletin 17 ARLP017
From Tad Cook, K7RA
Seattle, WA April 24, 2020
To all radio amateurs 

SB PROP ARL ARLP017
ARLP017 Propagation de K7RA

The last day with a visible sunspot was April 4.
 
Over the past reporting week, April 16 to 22, average daily solar flux
was 69, down a half point from the previous week, when the average
was 69.5.
 
Average daily planetary A index was 7.3 while mid-latitude A index
was 7. This was up from 6.1 and 5, mainly due to the first
geomagnetic storm of 2020, which pushed planetary A index to 18 on
April 19. That event bumped up the average.
 
Solar flux numbers have been soft of late, with averages over recent
weeks of 71.1, 69.4, 70.2, 69.5 and now 69. Lower solar flux
probably means less rad
		
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