SB PROP @ ARL $ARLP047
ARLP047 Propagation de K7RA
ZCZC AP47
QST de W1AW
Propagation Forecast Bulletin 47 ARLP047
From Tad Cook, K7RA
Seattle, WA November 26, 2018
To all radio amateurs
SB PROP ARL ARLP047
ARLP047 Propagation de K7RA
We saw sunspots return recently, but only for a week, November
13-19. From last week's bulletin, average daily sunspot number rose
from 3.1 to 9.4, while average daily solar flux rose from 68.5 to
70.8.
That week long sunspot appearance was sunspot number 2727, but last
weekend another smaller sunspot appeared briefly, so brief that it
was not assigned a number, but significant because the polarity was
reversed, so it is a sunspot from the upcoming Solar Cycle 25.
See https://bit.ly/2DTrdks for details on the brief appearance.
Mike Schaffer
...
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Понедельник, 16.06.2025, 02:50
