Solar activity decreased to low levels today. Region 826 (S02E22) continued to show explosive growth in both magnetic complexity and sunspot area. Magnetic analysis shows a strong east-west neutral line through the delta spot in the geometric center of the sunspot cluster. Region 826 produced multiple B and C-class flares during the period, the largest was a C6 x-ray flare occurring at 01/0837Z. Region 824 (S14W75) underwent little change since yesterday but did produce a C2 x-ray flare at 01/0238Z, which had an associated Type II radio sweep with an estimated shock velocity of 487 km/sec. Region 828 (S04E42) is a rapidly emerging DSO beta group that was numbered today.

Solar activity is expected to be at low to moderate levels. Region 826 has the potential to produce M-class flare activity.

The geomagnetic field was at quiet to active levels. The elevated conditions are due to a recurrent high speed coronal hole stream. The solar wind speed has ranged between 650 and 750 km/sec throughout most of the period.

The geomagnetic field is expected to be at predominantly quiet to unsettled levels with isolated active conditions on 02 December due to a favorability positioned coronal hole. Conditions should decrease to quiet to unsettled levels on 03 and 04 December.

  觀測的       01 Dec 098
  預測的   02 Dec-04 Dec  100/105/105
  90天平均值        01 Dec 085

  觀測的 Afr/Ap 30 Nov  009/010
  估算值     Afr/Ap 01 Dec  010/012
  預測的    Afr/Ap 02 Dec-04 Dec  012/015-010/012-005/008