Solar activity has been moderate with the only significant activity a Class M event in Region 9393 (N17 W43) at 31/1100 UT. Active Region 9393 remains as threatening as before.

Solar activity is expected to remain moderate to high with continued expectation of another major flare in Region 9393.

The geomagnetic field has been at severe storm levels. A shock passed the ACE spacecraft at 31/0023 UT and subsequently reached Earth's magnetic field at 31/0051. The storm developed after that time and reached maximum intensity after 31/0900 UT. It has continued into the later hours of the UT days. Dynamic auroral displays were reported across the United States with especially dynamic displays reported in Arizona, west Texas and California. The solar proton event that began at 29/1000 UT was declared over at 01/0600 UT.

The geomagnetic storm in progress is expected to continue into tomorrow before declining to less disturbed levels

  觀測的       31 Mar 246
  預測的   01 Apr-03 Apr  240/230/220
  90天平均值        31 Mar 164

  觀測的 Afr/Ap 30 Mar  008/010
  估算值     Afr/Ap 31 Mar  140/150
  預測的    Afr/Ap 01 Apr-03 Apr  065/070-030/035-020/025