Solar activity remained at low levels. Isolated B- and C-class flares were observed from Region 1176 (S17W37) and Region 1183 (N15E27). Region 1176 showed magnetic simplification and was classified as an Fso group with a beta magnetic structure. Region 1183 showed a minor increase in spot count and area and was classified as an Eai group with a beta magnetic structure. Two filaments disappeared during the period. The first was 9 degrees in extent, centered near N48E16, and disappeared early in the period. The second was 7 degrees in extent, centered near S27E21, and disappeared around mid-period. There was no significant CME activity associated with either disappearance. A back-sided partial-halo CME was observed early in the period, first visible in SOHO/LASCO C2 images at 29/2024Z, with an estimated plane-of-sky velocity of 1075 km/sec. The source of the CME was an active region about a day beyond the northeast limb. No new regions were numbered.

Solar activity is expected to be low during the period (31 March - 02 April) with a chance for moderate activity (isolated M-class).

Geomagnetic activity was at quiet to active levels. An active period was observed during 30/0000 - 0300Z, followed by quiet levels for the rest of the period. A geomagnetic sudden impulse (SI) was observed at 30/0018Z (12 nT, as measured by the Boulder USGS magnetometer). ACE solar wind data indicated the increased activity was associated with a period of southward IMF Bz (maximum deflection -8 nT at 29/2306Z) combined with increased IMF Bt (peak 15 nT at 29/2359Z).

Geomagnetic activity is expected to be at quiet to unsettled levels during days 1 - 2 (31 March - 01 April) with a chance for brief active levels due to recurrent coronal hole high-speed stream effects. Activity is expected to decrease to quiet levels on day 3 (02 April) as coronal hole effects subside.

  Havaittu       30 Mar 118
  Ennusteet   31 Mar-02 Apr  125/130/135
  90 vuorokauden keskiarvo        30 Mar 098

  Havaittu Afr/Ap 29 Mar  002/004
  Arvioitu     Afr/Ap 30 Mar  007/008
  Ennusteet    Afr/Ap 31 Mar-02 Apr  010/010-008/008-005/005