Excerpt from SpaceWeather:
Active sunspot AR2975 erupted again on March 30th, producing its strongest flare yet–an X1.3-class explosion. NASA’s Solar Dynamics Observatory recorded the extreme ultraviolet flash…This CME will probably reach Earth during the early hours of April 2nd. (NOAA and NASA modeling, now underway, will soon refine the arrival time.) Its impact could trigger G1-class geomagnetic storms, extending a period of geomagnetic unrest expected that began on March 31st with the arrival of a Cannibal CME launched by the same sunspot a few days ago.