Solar activity decreased to low levels. Frequent C-class flares occurred. Region 9876 (S16E30) was the most active area on the disk and produced occasional C-class subflares. It grew during the period with increased area and magnetic complexity, particularly in its trailer spots. Region 9878 (N10E43) produced a long-duration C2/Sf flare at 23/0330 UTC with no significant radio emission. This region grew at a gradual pace with a minor increase in area and spot count. Region 9871 (S18W60) produced an isolated subflare as it continued to gradually decay. New Region 9883 (N06E67) was numbered.

Solar activity is expected to be low to moderate. There is a fair chance for an M-class flare from Region 9876. Major flare potential may increase in this region if its current rate of growth continues.

Geomagnetic field activity was at quiet to active levels. Field activity increased to unsettled to active levels following a sudden impulse at 23/1137 UTC (16 nT, as measured by the Boulder USGS magnetometer). The greater than 10 MeV proton event that began at 22/2020 UTC continued. The preliminary maximum for this event was 16.2 pfu at 23/1320 UT.

Geomagnetic field activity is expected to be at quiet to unsettled levels during most of the period. However, brief active conditions may occur during 25 - 26 March. The greater than 10 MeV proton event is expected to end early in the period.

  觀測的       23 Mar 170
  預測的   24 Mar-26 Mar  170/165/165
  90天平均值        23 Mar 211

  觀測的 Afr/Ap 22 Mar  007/008
  估算值     Afr/Ap 23 Mar  010/010
  預測的    Afr/Ap 24 Mar-26 Mar  010/012-010/015-010/012