Tad Cook, K7RA, Seattle, reports: Average daily solar
indices over the past week were lower than the previous 7 days, with
the average daily sunspot number declining from 40.9 to 13, and the
average daily solar flux dropping by 10 points from 82.2 to 72.2.
Geomagnetic
indicators were higher, with the average daily planetary A index rising
from 4.9 to 13.3, and the mid-latitude A index from 3.4 to 9.
Predicted
solar flux is 70 on December 15-17; 75 on December 18-20; 80 and 86 on
December 21-22; 88 on December 23-27; 86 on December 28-29; 88 on
December 30-January 1; 86 on January 2-3; 84 and 82 on January 4-5; 80
on January 6-7; 73 on January 8-9; 75 on January 10-14; 82 on January
15-16; 86 on January 17-18; 88 on January 19-23, and 86 on January
24-25.
Predicted planetary A index is 5 on
December 15-16; 8 on December 17-18; 15 on December 19-20; 25, 30, 12,
10, and 8 on December 21-25; 5 on December 26-January 1; 8, 10, 20, and
22 on January 2-5; 16 on January 6-7; 8 on January 8; 5 on January 9-12;
8 on January 13-14; 12, 16, 22, and 30 on January 15-18; 12, 10, and 8
on January 19-21, and 5 for the remainder of the 45-day forecast.
Sunspot
numbers for December 8 through 14 were 14, 12, 0, 13, 13, 14, and 25,
with a mean of 13. The 10.7-centimeter flux was 74.8, 72.9, 72.2, 71.4,
70.8, 71.2, and 72.4, with a mean of 72.2. Estimated planetary A indices
were 23, 25, 16, 15, 6, 4, and 4, with a mean of 13.3. Estimated
mid-latitude A indices were 14, 18, 11, 11, 5, 2, and 2, with a mean of
9.
Send me your reports or observations, especially from the ARRL 10 Meter Contest.
