Solar activity increased to moderate levels. Region 9830 (S20E07) produced a long-duration M1/Sf flare at 18/2115 UTC as well as isolated C-class subflares, none of which were associated with significant radio emission. Region 9830 continued to gradually develop with increased area and magnetic complexity. Most of the region's complexity lies within its large leader spots where multiple, strong magnetic delta configurations have formed over the past few days. Region 9825 (N16W66) produced an impulsive C-class flare as it continued to gradually decay. The remaining regions were unremarkable. New Region 9833 (N11W16) was numbered.

Solar activity is expected to remain at moderate levels. Isolated low-level M-class flares are likely. Region 9830 could produce an isolated major flare during the period.

Geomagnetic field activity ranged from quiet to active levels. Unsettled to active conditions occurred during 18/2100 - 2400 UTC.

Geomagnetic field activity is expected to be at quiet to unsettled levels. Region 9830 provides a slight chance for a proton flare during the period.

  觀測的       19 Feb 189
  預測的   20 Feb-22 Feb  195/200/205
  90天平均值        19 Feb 222

  觀測的 Afr/Ap 18 Feb  006/009
  估算值     Afr/Ap 19 Feb  007/006
  預測的    Afr/Ap 20 Feb-22 Feb  007/008-007/008-007/012