X-rays and UV radiation from the flare ionized the top of our planet's atmosphere. Waves of ionization disturbed the normal propagation of radio waves over the Americas and the Pacific, and may have caused an HF communications blackout over the poles.
The Solar and Heliospheric Observatory (SOHO) recorded a bright CME emerging from the blast site. Given the sunspot's location on sun's western limb, however, it is unlikely the CME will reach our planet. Analysts at NOAA are busy evaluating the possibility of a glancing blow in the days ahead.
Sunspot AR1875 has left the Earthside of the sun, but other active sunspots remain. NOAA forecasters estimate a 60% chance of M-class flares and a 25% chance of X-flares on Oct. 30th.