Solar activity was at moderate levels. Region 337 (S16W67) produced an M1/1f flare at 0459Z. Region 337 appears to have lost its delta magnetic configuration since producing the M1 flare, but continues to produce minor C-class flares. Region 349 (S13E20) has exhibited significant growth in area and spot count over the last twenty-four hours, and now exceeds 40 spots and over 500 millionths of white light coverage. This region has produced a number of minor C-class flares.

Solar activity is expected to be at low to moderate levels. Regions 337 and 349 have the potential for M-class events. Region 349 could produce a major event.

The geomagnetic field was at quiet to minor storm levels. Solar wind velocity remains elevated near 550 km/s. Transient flow has produced periods of southward Bz that resulted in isolated active and minor storm conditions.

The geomagnetic field is expected to be unsettled to active. A returning coronal hole is expected to rotate into a geo-effective position on day one of the period and may produce active to isolated minor storm levels during the period.

  觀測的       29 Apr 155
  預測的   30 Apr-02 May  155/150/140
  90天平均值        29 Apr 127

  觀測的 Afr/Ap 28 Apr  009/020
  估算值     Afr/Ap 29 Apr  012/012
  預測的    Afr/Ap 30 Apr-02 May  012/015-015/025-015/025