Today’s H-alpha image shows extensive prominence activity along the NE, E, SE, NW, W and SW solar limbs. There are bright plages around all of the active regions. There are also serpentine filaments including two that end at the solar limb as prominences.
Below, today’s sunspot image shows eight active regions where NASA’s SDO image shows nine. The missing sunspot is AR4176 which lies just north of AR4171 but is too ill-defined to see in my image. Note that AR4172 and AR4178 are much more complex than the other active regions. Such complexity offers the possibility of strong solar winds that can blow solar plasma toward Earth causing radio blackouts and aurorae.
The eastern solar limb prominences appear below. In the first frame, a dark filament near the solar rim becomes a plume of sun stuff that we see at the limb. The second frame shows complex arcs of sun stuff and a plume being ejected high above the chromosphere.
The western limb prominences are showcased below. The first frame shows a filament in the northwest solar quadrant that ends at the solar rim in an arch prominence. Further to the south, there is a bridge-like structure. The second frame shows the prominences along the western limb that extend to the southwest in the third frame.
