Solar activity was low. Regions 9373 (S08E34) and 9376 (S15E57) emerged as the most active regions on the visible disk. Region 9373 continues to develop in size and complexity and produced occasional subfaint C-class flares. Region 9376 produced a C4/Sf at 12/1737Z with an associated CME. This region's proximity to the SE limb is still hindering a thorough analysis, but new spots became apparent today in and near this region; moderate complexity is obvious with at least three regions relatively close to each other. An eruption off the SW limb was observed late in the period. It was likely associated with an eruption of a large bushy filament that rotated around the west limb a few days ago. New Regions 9378 (N24W32), 9379 (N31E39), and 9380 (S09E66) were numbered today.

Solar activity is expected to be low to moderate. Best chance for a M-flare is from Regions 9373 and 9376.

The geomagnetic field was quiet to active. Quiet conditions existed prior to a shock observed at SOHO/MTOF at approximately 12/0500Z. Mostly unsettled to active conditions were observed at all latitudes since the shock. This disturbance is presumed to be associated with the 8 Mar, M5/1b flare and CME.

The geomagnetic field is expected to be quiet to unsettled with isolated active periods through day 1.

  Observé       12 Mar 158
  Prévisionnel   13 Mar-15 Mar  155/150/150
  Moyenne des 90 derniers jours        12 Mar 163

  Observé Afr/Ap 11 Mar  002/004
  Estimé     Afr/Ap 12 Mar  010/010
  Prévisionnel    Afr/Ap 13 Mar-15 Mar  010/008-005/005-005/005