Solar activity was moderate. Region 708 (N08W12) produced an M1/2f flare at 03/0006UTC. This flare was associated with a full-halo CME and significant radio emission that included a 520 sfu burst at 2695 MHz and type II/IV sweeps. The sunspot configuration has remained relatively unchanged following the flare. Region 707 (S14W49) was stable. New Region 709 (N06E61) was numbered.

Solar activity is expected to be low. Occasional C-class flares are possible in Regions 707 and 708. Another M-class flare may occur in 708.

The geomagnetic field was quiet. The proton flux at greater than 10 MeV is enhanced as a result of the M1 flare discussed in Part IA but has not yet crossed the 10 pfu event threshold. The greater than 2 MeV electron flux at geosynchronous orbit was high. The Fredericksburg A index reported in Part V is estimated from Boulder observations.

The geomagnetic field is expected to be quiet until the arrival of the CME associated with the M1 flare discussed in Part IA. The arrival of the CME is anticipated late on 04 Dec after which geomagnetic conditions are expected to be at storm levels. A coronal hole high-speed stream is also expected to begin to affect geomagnetic activity within the same time period. The greater than 10 MeV proton flux may increase with the arrival of the CME but is currently not expected to exceed the event threshold.

  觀測的       03 Dec 101
  預測的   04 Dec-06 Dec  095/095/090
  90天平均值        03 Dec 108

  觀測的 Afr/Ap 02 Dec  004/004
  估算值     Afr/Ap 03 Dec  004/004
  預測的    Afr/Ap 04 Dec-06 Dec  010/015-035/040-015/020