Solar activity was low. Only a few C-class flares occurred. New Region 105 (S06E77) is currently rotating around the east limb and appears to be the return of old active Region 69 (S08, L=299). So far the area has not produced significant activity. New Region 104 (N11E59) was also numbered.

Solar activity is expected to be low to moderate. Region 105 is the most likely source of energetic flares.

The geomagnetic field ranged from quiet to severe storm levels. A shock in the solar wind was observed by the NASA ACE spacecraft at 07/1609 UTC and was followed by a 7 nT sudden impulse on the Boulder magnetometer at 07/1638 UTC. This shock is believed to be related to the eruptive filament and CME which occurred on 05 September. The greater than 10 MeV proton flux crossed the 10 pfu event threshold at 07/0440 UTC after a slow rise over the previous 28 hours. Peak event flux so far was 208 pfu at 07/1650 UTC. Retrospect analysis suggests that these particles are most likely associated with the eruptive filament mentioned above rather than a west limb event as suggested yesterday.

The geomagnetic field is expected to be at active to storm levels over the next 24 hours, becoming quiet to unsettled by 10 September. The greater than 10 MeV proton event is expected to end by 09 September.

  觀測的       07 Sep 183
  預測的   08 Sep-10 Sep  190/200/210
  90天平均值        07 Sep 170

  觀測的 Afr/Ap 06 Sep  006/010
  估算值     Afr/Ap 07 Sep  030/055
  預測的    Afr/Ap 08 Sep-10 Sep  020/025-010/015-008/010