Solar activity decreased to low levels. Occasional subflares occurred, some of which were associated with C-class X-ray events. Region 9960 (N14W20) produced a single C-class subflare. It underwent slight decay, but retained a delta magnetic configuration within its trailer spots. Region 9961 (S21W04) produced a long-duration C-class subflare at 25/1721 UTC associated with minor radio emission and a narrow-width CME from the south pole. The CME did not appear to be Earth-directed. It showed gradual decay with a persistent, but weakened delta within its intermediate spots. Region 9957 (N10W45) displayed little change during the period. Magnetic delta configurations were present in the northern and southern portions of this region, though they appeared to have dissipated and reformed during the past day or two. New Region 9969 (N09E67) produced occasional subflares. This region may have a moderate degree of complexity, though it is too close to the east limb for a detailed analysis.

Solar activity is expected to be at low to moderate levels. Regions 9957, 9961, and 9963 appear capable of isolated M-class flare production. There is a slight chance for an isolated major flare during the period.

Geomagnetic field activity was at quiet to unsettled levels.

Geomagnetic field activity is expected to be at quiet to unsettled levels during most of the period. However, brief active intervals are possible on 26 May due to recurrent coronal hole effects. There is a slight chance for a proton event during the period.

  Havaittu       25 May 183
  Ennusteet   26 May-28 May  180/180/180
  90 vuorokauden keskiarvo        25 May 183

  Havaittu Afr/Ap 24 May  003/007
  Arvioitu     Afr/Ap 25 May  005/007
  Ennusteet    Afr/Ap 26 May-28 May  012/010-008/008-007/008