Solar activity was at low levels. The first half of the day produced multiple low level C-class flares that were not optically correlated. At 18/1350 UTC, Region 9658 (S14W48) produced a C6/1n flare and associated radio enhancements. White light analysis of this region shows a slight decay in areal coverage of spots, though it remains a beta-gamma magnetic class group. Region 9661 (N16W23) followed with a C4/Sf flare at 18/1609 UTC and continues to show the potential to produce much more significant activity. This region has shown a small decay in areal coverage of spot group from yesterday, although it still continues to be a large, magnetically complex region. New Region 9672 (S21E69) produced the largest flare of the day, a C8/Sf flare that occurred at 18/1905 UTC. This region may very well be old Region 9632 which currently appears to have not fully rotated onto disk. Two new Regions were numbered today, 9672 and 9673 (N03E73).

Solar activity is expected to be at low to moderate levels. There are several regions on the disk that are capable of producing M-class or isolated major flares, the most noteworthy being Region 9661.

The geomagnetic field was at quiet to unsettled levels.

The geomagnetic field is expected to remain at quiet to unsettled levels through forecast period, barring the occurrence of an earth-directed CME. High latitudes may experience isolated periods of active conditions during days one and two.

  Pozorováno       18 Oct 229
  Předpovězeno   19 Oct-21 Oct  235/240/245
  90 denní průměr        18 Oct 188

  Pozorováno Afr/Ap 17 Oct  002/004
  Odhadovaný     Afr/Ap 18 Oct  005/006
  Předpovězeno    Afr/Ap 19 Oct-21 Oct  005/010-005/010-008/008