SB PROP @ ARL $ARLP029
ARLP029 Propagation de K7RA

ZCZC AP29
QST de W1AW 
Propagation Forecast Bulletin 29 ARLP029
From Tad Cook, K7RA
Seattle, WA July 21, 2023
To all radio amateurs 

SB PROP ARL ARLP029
ARLP029 Propagation de K7RA

Average daily sunspot numbers declined, but average daily solar flux
increased. Sunspot averages were 181.9 last week, and 130.6 this
week. Average daily solar flux increased from 179.4 to 190.5.

Two new sunspot groups emerged on July 14, three more on July 17 and
another two on July 19.

Average daily planetary and middle latitude A index were both 12.9
this week, rising from 8.6 and 8.1.

Predicted solar flux is 185 on July 21-23, then 180, 178, 175 and
170 on July 24-27, 165 on July 28-29, 170 on July 30-31, 165 on
August 1-4, then 170, 175, 175 and 170 on August 5-8, 165 on August
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