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The K7RA Solar Update

Discussion in 'ARRL Updates' started by ARRL, Jul 15, 2017.

  1. ARRL

    ARRL
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    Spaceweather.comreported that at 0209 UTC on July 14 a powerful M2 class solar flare and CMEerupted, so geomagnetic predictions in this bulletin for the next few days mayalready be out of date.

    Average daily sunspot numbers were 28.3 during this reporting week (July 6-12)up from 8 during the previous week. Average daily solar flux increased from71.7 to 87.



    Average planetary A index increased from...

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