Solar activity remained at very low levels. Old active Region 808 (S10, L=232) is rotating into view on the southeast limb and still appears relatively complex. Several B-class flares were observed including a long-duration B7 flare at 04/0622Z. This long-duration event was associated with a prominence eruption and CME on the southeast limb. A large loop structure was also observed near this location on EIT imagery. Newly numbered Region 813 (S06E30) emerged this period as a moderately complex and compact beta-gamma group.

Solar activity is expected to be low. Old Region 808, which is currently rotating onto the visible disk, may produce C-class activity. Newly numbered Region 813 also has C-class flare potential. There is a slight chance for an M-class flare.

The geomagnetic field was quiet. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels again today.

The geomagnetic field is expected to be quiet on 05 October. Isolated unsettled to active periods are possible on 06 and 07 October.

  觀測的       04 Oct 083
  預測的   05 Oct-07 Oct  090/095/095
  90天平均值        04 Oct 090

  觀測的 Afr/Ap 03 Oct  005/007
  估算值     Afr/Ap 04 Oct  005/004
  預測的    Afr/Ap 05 Oct-07 Oct  005/005-008/008-005/010