Solar activity was low. Several, mostly small C-class flares were observed. Region 9289 (S06E57) has evolved quickly into the largest and most complex region on the visible disk. It now exhibits an "Eko" beta-gamma spot group nearing 800 millionths of white light area, and was responsible for most of the C-class flares. Region 9279 (S12W77) produced a C2/sf flare at 28/1429Z with an associated Type II sweep. Region 9283 (S11W03) also produced isolated C-class flares, the largest being a C5/sf at 27/2218Z. Perhaps the most impressive event of the period was a large, full halo CME on LASCO imagery at 28/1230Z. There was no optical correlation of the source - the event appears to have originated from the backside of the disk.

Solar activity is expected to be low to moderate. Region 9289 has potential for isolated M-class flares.

The geomagnetic field was mostly quiet with isolated unsettled conditions at high latitudes.

The geomagnetic field is expected to continue at quiet to unsettled levels.

  觀測的       28 Dec 185
  預測的   29 Dec-31 Dec  185/185/185
  90天平均值        28 Dec 173

  觀測的 Afr/Ap 27 Dec  007/007
  估算值     Afr/Ap 28 Dec  008/008
  預測的    Afr/Ap 29 Dec-31 Dec  005/010-005/010-005/010