SB PROP @ ARL $ARLP003
ARLP003 Propagation de K7RA
ZCZC AP03
QST de W1AW
Propagation Forecast Bulletin 3 ARLP003
From Tad Cook, K7RA
Seattle, WA January 17, 2020
To all radio amateurs
SB PROP ARL ARLP003
ARLP003 Propagation de K7RA
Solar Cycle 25 sunspots persisted for the first two days (January
9-10) of this reporting week, January 9-15, with daily sunspot
numbers of 14 and 11. That brought the weekly average daily sunspot
number from 8.4 last week to 3.6. Average daily solar flux edged up
from 71.8 to 72.5.
Average daily planetary A index declined from 6.3 to 5.6, and
average middle latitude A index went from 5.3 to 3.7.
Predicted solar flux for the next 45 days is 72 and 71 on January
17-18, 70 on January 19 through February 7, 72 on February 8-22, and
70 on February 23 through March 1.
Predicted planetary
...
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Пятница, 11.07.2025, 16:46
