Solar activity was at low levels. Region 180 (S10E30) produced the largest flare of the period, an impulsive C4.4/Sf flare at 04/1823 UTC. This region has more than doubled in white-light penumbral coverage since yesterday and produced the vast majority of the reported flare activity today. A gamma magnetic structure remains evident. Region 177 (N16E05) has shown slight decay today although it remains a beta-gamma magnetic group. The largest event seen today from this region was a C3.7/Sf flare that occurred at 04/0330 UTC. No new regions were numbered today.

Solar activity is expected to be at low to moderate levels. Regions 177 and 180 exhibit the potential for M-class flare production.

The geomagnetic field was at unsettled to active levels. The Bz component of the interplanetary magnetic field was mostly southward and the solar wind speed was elevated throughout the period in response to a geoeffective high speed coronal hole stream.

The geomagnetic field is expected to be at unsettled to active levels with occasional minor to major storm levels mostly at high latitudes through day two. Mostly unsettled conditions with isolated active periods are expected on day three.

  觀測的       04 Nov 177
  預測的   05 Nov-07 Nov  175/175/180
  90天平均值        04 Nov 176

  觀測的 Afr/Ap 03 Nov  015/027
  估算值     Afr/Ap 04 Nov  018/020
  預測的    Afr/Ap 05 Nov-07 Nov  012/015-010/012-008/010