On March 23rd around 0330 UT, the magnetic canopy of sunspot AR2014 became unstable and erupted, producing a long-duration C-class solar flare. Although C-class flares are considered to be minor, this one lasted so long (several hours) that it unleashed the energy-equivalent of a much stronger flare. NASA’s Solar Dynamics Observatory recorded the action.
Slow flares usually produce CMEs and this one was no exception. The Solar and Heliospheric Observatory (SOHO) recorded a bright cloud emerging from the blast site. The CME appears to have an Earth-directed component that could reach our planet in ~3 days.