Solar activity has been at high levels for the past 24 hours. The largest solar event of the period was a X8 event observed at 10/1606Z from old Region 2673 (S09, L=119). There are currently 3 numbered sunspot regions on the disk.

Solar activity is expected to be moderate with a chance for X-class flares on day one (11 Sep) and expected to be very low with a chance for a C-class flares and a slight chance for an M-class flare on day two (12 Sep) and expected to be very low with a slight chance for a C-class flare on day three (13 Sep).

The geomagnetic field has been at quiet to unsettled levels for the past 24 hours. Solar wind speed reached a peak of 560 km/s at 10/1015Z. Total IMF reached 6 nT at 10/1935Z. The maximum southward component of Bz reached -4 nT at 10/2020Z. Protons greater than 10 MeV at geosynchronous orbit reached a peak level of 1038 pfu at 10/1845Z. Protons greater than 100 MeV at geosynchronous orbit reached a peak level of 54 pfu at 10/2100Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 7875 pfu.

The geomagnetic field is expected to be at quiet to unsettled levels on day one (11 Sep), quiet to active levels on day two (12 Sep) and unsettled to minor storm levels on day three (13 Sep). Protons are expected to cross threshold on day one (11 Sep), are expected to cross threshold on day two (12 Sep) and are likely to cross threshold on day three (13 Sep).

  觀測的       10 Sep 100
  預測的   11 Sep-13 Sep 085/083/081
  90天平均值        10 Sep 081

  觀測的 Afr/Ap 09 Sep  006/004
  估算值     Afr/Ap 10 Sep  005/006
  預測的    Afr/Ap 11 Sep-13 Sep  007/007-010/012-020/030