Another X-class solar flare from sunspot group AR1882 – Oct 25, 16:40 UTC

The new sunspot group AR1882 produced another major solar flare, an X2.1 blast at 15:03 UT. The sunspot group is still close to the solar limb, so any coronal mass ejections will not be geoeffective. Meanwhile the sunspot groups in the center of the Solar disk remain quiet.


X2.1 flare captured by Solar Dynamics Observatory. Source: SDO / NASA.

The major M9 solar flare of yesterday morning produced a faint full-halo coronal mass ejection (CME). The plasma cloud is en route to Earth, however, its potential for geomagnetic storming is not yet known. The CME caused a type II radio emission, from which its velocity was determined. The plasma cloud was ejected towards Earth at just under 1400 km/s. No other velocity data is available. Based on the type II emission the CME is expected to reach the Earth late on October 25 or early on October 26.