Solar activity was at low levels. Region 9661 (N16E04) produced several C-class flares, the largest being a C6/Sf at 16/1926 UTC. This region has continued to grow in areal coverage and spot count, and also has exhibited greater magnetic complexity over the last 24 hours. Other minor C-class flares also occurred throughout the period. A filament centered near S35W34 disappeared at about 15/2100 UTC, however no associated CME activity was apparent in available SOHO/LASCO imagery. New Region 9670 (S16E67) was numbered today, indicating the expected return of old Region 9628/9632 complex. Limb proximity prevents full analysis of the new region's characteristics.

Solar activity is expected to be at low to moderate levels. Region 9661 continues to show the potential to produce an isolated major flare.

The geomagnetic field was at quiet to unsettled levels.

The geomagnetic field is expected to be quiet to unsettled for the next three days, barring the occurrence of an earth directed CME.

  觀測的       16 Oct 207
  預測的   17 Oct-19 Oct  215/215/220
  90天平均值        16 Oct 186

  觀測的 Afr/Ap 15 Oct  009/011
  估算值     Afr/Ap 16 Oct  008/008
  預測的    Afr/Ap 17 Oct-19 Oct  008/008-008/012-008/008