From the WUWT Solar Reference page, an X 1.2 event has occurred:
From NASA Spaceweather:
Giant sunspot AR1944 erupted on Jan 7th at approximately 1832 UT, producing a powerful X1-class solar flare. First-look coronagraph images from the STEREO-Ahead spacecraft appear to show a coronal mass ejection (CME) emerging from the blast site. If so, the CME is almost certainly heading for Earth. Stay tuned for updates as more data arrive from the NASA-ESA Heliophysics Fleet.
One of the biggest sunspots in years is crossing the center of the solar disk, putting Earth in the way of potential eruptions. Rocky Raybell photographed the active region named “AR1944” yesterday from his backyard in Keller, Washington:
The sprawling sunspot contains dozens of dark cores, the largest big enough to swallow Earth three times over.
Here is the latest SDO image:
This graphic from Tamitha Skov
More at the WUWT Solar Reference page