Solar storms from Tuesday night's powerful flare on the surface of the sun seemed to be less than anticipated and fizzling away. But Friday morning brought new surprises.
Geomagnetic storms have picked up, says NASA's Alex Young, and a new solar flare occurred about 7:30 p.m. PST on Thursday.
"Earth's magnetosphere continues its upset state," Young, a solar physicist with the Goddard Space Flight Center, says on his website, the Sun Today. The "kp index," which measures just how disturbed the magnetic field is, took a bit of a roller-coaster ride, from a level 5 to 4 and then zooming up to 7.