Solar activity was at low levels. The largest event was an optically uncorrelated long duration C8 flare at 29/0246 UTC. Region 9972 (S21E44) produced a C8/Sf at 29/0519 UTC and has shown slight growth. Region 9961 (S21W59) has simplified in magnetic complexity while Region 9963 (N16W43) has remained relatively unchanged since yesterday. Region 9973 (S16E61) has developed a beta-gamma magnetic configuration and a 960 millionths area coverage. Two new regions were numbered today: Region 9974 (N18E58) and Region 9975 (N23E63).

Solar activity is expected to be low to moderate. Region 9963 has the potential for low level M-class activity. Region 9973 has the potential for low level M-class activity and a slight chance of producing a major event.

The geomagnetic field was at quiet to unsettled levels.

The geomagnetic field is expected to be quiet to unsettled.

  觀測的       29 May 185
  預測的   30 May-01 Jun  185/190/190
  90天平均值        29 May 183

  觀測的 Afr/Ap 28 May  008/012
  估算值     Afr/Ap 29 May  008/012
  預測的    Afr/Ap 30 May-01 Jun  008/015-008/010-005/010