SB PROP @ ARL $ARLP042
ARLP042 Propagation de K7RA
ZCZC AP42
QST de W1AW
Propagation Forecast Bulletin 42 ARLP042
From Tad Cook, K7RA
Seattle, WA October 16, 2020
To all radio amateurs
SB PROP ARL ARLP042
ARLP042 Propagation de K7RA
Sunspots returned for a few days, on October 9-12, with sunspot
numbers of 24, 26, 15 and 15, respectively. No sunspot appeared on
the next day, but late on Wednesday Spaceweather.com reported a new
emerging Solar Cycle 25 spot on our Sun's southeastern limb, and a
daily sunspot number of 12. NOAA Space Environment Center did not
report this, instead reporting the sunspot number at 0.
But the next day the record was corrected and NOAA reported sunspot
numbers of 12 and 14 on October 14-15.
Average daily sunspot number increased from 0 to 13.1, while average
daily solar flux went
...
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