On Friday, June 20, Spaceweather.com reports that, in addition to it
being the first day of Summer in the Northern Hemisphere, on June 19
the Sun produced another X-class flare causing a shortwave radio
blackout over the Pacific Ocean.
Solar activity reached high levels when Region AR4114 produced the
strongest event of the period, an X1.9 flare at 2350 UTC. The region
remained the most complex on th…
