The K7RA Solar Update

No sunspots appeared from December 27, 2017 until January 4, 2018. As solar cycle 24 declines to a minimum over the next two years we should see longer and more numerous periods of no sunspots. On January 4, the daily sunspot number was 13, indicating 3 sunspots in one sunspot group, although Spaceweather.com reported no sunspots on that day. The sunspot number for that day was reported by NOAA…

Posted in ARRL News.