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The K7RA Solar Update

Thread starter ARRL
Start date Mar 19, 2019

ARRL

Well-Known Member

Mar 19, 2019

Sunspots reemerged for 8 days on March 5-12. Average daily sunspot numbers rose from 4.4 in last week’s bulletin to 9.9 this week (March 7-13). Average daily solar flux barely changed, from 70.6 to 70.9. Average planetary A index declined from 12.6 to 5.1, and average middle latitude A index from 9.7 to 3.9.

The vernal equinox will occur next Wednesday, March 20 when the southern and northern he...

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The K7RA Solar Update

ARRL

Well-Known Member

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