Sunspot regions 1387 and 1388 produced several C-flares in the past 24 hours. The most prominent flare yesterday was a C8.9 flare produced by region 1386 at 04:22 UT. This eruption was accompanied by a CME (coronal mass ejection) observed with the coronagraphs onboard both the STEREO and SOHO spacecraft.
A glancing blow to Earth from this event is expected late on December 29th. Watch for unsettled to active geomagnetic conditions later today and tomorrow due to the arrival of several CME’s which occurred December 25 and 26 and a high speed solar wind stream from a coronal hole.
The first arrival signatures are currently visible in the ACE data. The solar wind speed is currently at 224 mp/s (360 km/s) and is expected to rise over 400 mp/s. Total interplanetary magnetic field is climbing towards 15 nT.
FULL ARTICLE – http://bit.ly/sQcKqk