Solar activity was at moderate levels. Region 198 (S18E55) produced an M2/Sf at 1454 UTC. Region 198 has grown significantly in penumbral coverage in the last 24 hours. Some weak mixing appears to be visible but better magnetic resolution, as the region rotates further onto the visible disk, is needed to clarify this. Region 191 (S18W41) has been relatively stable since yesterday, producing only minor C-class activity. Region 195 (S17E28) has simplified to a beta magnetic configuration and produced little activity.

Solar activity is expected to be low to moderate. Region 191 and Region 198 have good M-class potential.

The geomagnetic field was at quiet to unsettled conditions. NASA/ACE spacecraft indicates the possible development of a transient shock. A sharp rise in low energy protons (EPAM instrument) was observed early on 17 November to near 10^4 pfu.

The geomagnetic field is expected to be quiet to unsettled. Transient shock effects are possible early in the forecast period.

  觀測的       17 Nov 185
  預測的   18 Nov-20 Nov  190/180/175
  90天平均值        17 Nov 171

  觀測的 Afr/Ap 16 Nov  003/008
  估算值     Afr/Ap 17 Nov  007/010
  預測的    Afr/Ap 18 Nov-20 Nov  012/010-010/010-008/012