Solar activity has been low. Region 349 (S15W47) produced a long duration C1 event at 04/0301 UTC which was visible in the GOES Solar x-ray imagery. This region continues to fluctuate daily in white light area and sunspot count, but retains its beta-gamma magnetic configuration. Region 348 (S35W44) has grown in area and sunspot count since yesterday and also developed a beta-gamma magnetic configuration. New Regions 353 (S16E33) and 354 (N19E58) were numbered today.

Solar activity is expected to be low to moderate. Region 348 and 349 have the potential to produce a low level M-class event.

The geomagnetic field has been at quiet to unsettled levels. The greater than 2 MeV electron flux at geosynchronous orbit was at high levels today.

The geomagnetic field is expected to be at quiet to unsettled conditions for 05 May. Unsettled to active conditions are possible for 06 May - 07 May as a result of a coronal hole high speed flow.

  觀測的       04 May 142
  預測的   05 May-07 May  135/130/125
  90天平均值        04 May 129

  觀測的 Afr/Ap 03 May  007/010
  估算值     Afr/Ap 04 May  007/008
  預測的    Afr/Ap 05 May-07 May  015/015-015/020-015/020