Solar activity increased to high levels. Region 1429 (N18W62) produced a long duration M7 flare at 13/1741Z associated with Type II and IV radio sweeps (estimated velocity 1366 km/s), a 1400 sfu Tenflare, and an assymetric-halo CME (plane-of-sky velocity 1375 km/s) with a mostly northwest trajectory. The geoeffectiveness of this CME is currently under evaluation.

Solar activity is expected to be low to moderate with a slight chance for an X-class flare until Region 1429 rotates off the visible disk on 15 March. Day 3 (16 March) solar activity is expected to decrease to low levels with a slight chance for isolated moderate activity.

The geomagnetic field was quiet to unsettled. The greater than 10 MeV and greater than 100 MeV protons became rapidly enhanced just after the M7 flare with associated CME. The greater than 10 MeV event began at 13/1810Z, reached a maximum flux of 469 PFU at 13/2045Z and is decreasing. The greater than 100 MeV event also began at 13/1810Z, reached a maximum flux of 18.9 PFU and is also decreasing. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during the period.

Geomagnetic activity is expected to be at quiet levels on days one and two (14 and 15 March). Activity is expected to increase to quiet to unsettled conditions on day 3 (16 March) due to a recurrent coronal hole high-speed stream.

  觀測的       13 Mar 141
  預測的   14 Mar-16 Mar  140/140/135
  90天平均值        13 Mar 125

  觀測的 Afr/Ap 12 Mar  028/037
  估算值     Afr/Ap 13 Mar  010/011
  預測的    Afr/Ap 14 Mar-16 Mar  005/005-005/005-007/008