Solar activity increased to moderate levels. Region 162 (N26W18) produced a long duration M1.5/1f event at 25/1747 UTC along with multiple C-class flares today. The M1.5/1f flare produced an associated Type II (estimated shock velocity of 389 km/s) and a Type IV radio sweep. SOHO/LASCO imagery was insufficient at the time of this writing to determine whether an earth-directed CME accompanied this flare. This region retains a small delta magnetic structure that has underwent slight decay since yesterday. A disappearing solar filament (approximately 67 heliographic degrees) was seen to dissipate around 25/0600 UTC in the southeast quadrant of the disk. Two separate H-class spot groups were newly assigned today, Regions 170 (S12E65) and 171 (N10E76).

Solar activity is expected to be at moderate levels due to the magnetic complexity of Region 162.

The geomagnetic field was at unsettled to major storm levels. The large coronal hole in the western solar hemisphere continues to elevate the high speed solar wind (approximate average speed of 700 km/s). The greater than 2 MeV electron flux at geosynchronous orbit reached moderate levels today.

The geomagnetic field is expected to be at quiet to minor storm levels. The coronal hole high speed stream effects should persist through day one and into day two of the forecast period, returning to predominantly quiet to unsettled conditions by day three.

  Pozorováno       25 Oct 173
  Předpovězeno   26 Oct-28 Oct  170/170/170
  90 denní průměr        25 Oct 179

  Pozorováno Afr/Ap 24 Oct  022/047
  Odhadovaný     Afr/Ap 25 Oct  035/040
  Předpovězeno    Afr/Ap 26 Oct-28 Oct  025/025-015/015-010/012