Solar activity increased to high levels today. The disk and limb were very active during the period. Region 486 (S16E81) which was newly numbered today, produced several M-class flares over the interval. The largest were an M9.8 x-ray event that occurred at 22/2007 UTC, an M3.7, and two M1.7's. Region 484 (N04E13) produced an M1.4/Sn at 1511 UTC and an M1.2/Sn at 1601 UTC. Moreover, 2 separate filament eruptions were seen on SOHO/EIT imagery from the vicinity of this region spawning a partial halo CME that appears to be Earth directed. Magnetic field remains extremely complex, a beta-gamma-delta (with several delta structures) through this north-south oriented spot cluster. A slight growth in penumbral coverage was noted during the period.

Solar activity is expected to be at moderate to high levels. Regions 484 and 486 are both capable of producing isolated major flares.

The geomagnetic field ranged from unsettled to major storm levels today. A recurrent coronal hole high speed stream is responsible for the elevated conditions. The greater than 2 MeV electron fluxes at geosynchronous orbit reached high levels today.

The geomagnetic field is expected to be at predominantly active levels through day one of the forecast period. The partial halo CME from today is expected to arrive mid-day on the 24th of October and may produce periods of major storming. Day three should see a return to unsettled to active conditions.

  觀測的       22 Oct 154
  預測的   23 Oct-25 Oct  160/165/170
  90天平均值        22 Oct 116

  觀測的 Afr/Ap 21 Oct  028/039
  估算值     Afr/Ap 22 Oct  020/038
  預測的    Afr/Ap 23 Oct-25 Oct  020/030-040/045-015/025