Solar activity was at low levels. Region 9893 (N19W27) produced a C9.9/1N flare on 11/0153 UTC. This region has shown growth in area and spot count in the last 24 hours but maintains its magnetic beta-gamma configuration. Region 9901 (N21W14) increase in magnetic complexity to a beta-gamma-delta configuration. Region 9904 (S16W36) produced a C9/1F flare on 11/1626 UTC with an associated Type II Radio Burst (608 km/s). Initial analysis at SOHO/LASCO imagery does not indicate an earth directed component. Two new regions were numbered today: Region 9906 (S16E40) and Region 9907 (S04E74)

Solar activity is expected to be low to moderate. Region 9893/9901 complex has the potential for a major event.

The geomagnetic field was at quiet to unsettled levels. At 11/1800 UTC a greater than 10 Mev proton enhancement began with a current level of 1.0 pfu at geosynchronous orbit.

The geomagnetic field is expected to be unsettled to active. On Day two of the forecast period a weak CME shock is expected to arrive. On day three another possible CME shock is due to arrive and should result in unsettled to active conditions.

  觀測的       11 Apr 197
  預測的   12 Apr-14 Apr  195/190/195
  90天平均值        11 Apr 202

  觀測的 Afr/Ap 10 Apr  004/007
  估算值     Afr/Ap 11 Apr  009/012
  預測的    Afr/Ap 12 Apr-14 Apr  010/012-012/015-015/020