Solar activity was low. Region 9704 (S18E02) produced a number of C-class subflares, the largest being a C4/Sf at 19/0701 UTC. This Region remains the most magnetically complex presently on the disk.

Solar activity is expected to be low to moderate. Region 9704 remains capable of M-class flares.

The geomagnetic field ranged from quiet to active levels. A shock was observed at the NASA ACE spacecraft at about 19/1735 UTC, followed by a sudden impulse at ground magnetometers (10 nT at Boulder) at about 19/1815 UTC. This shock is believed to be associated with a CME which occurred on 17 November. The greater than 10 MeV proton flux at geosynchronous orbit exceeded the 10 pfu event threshold at 19/1230 UTC. This event remains in progress with a maximum flux so far of 20 pfu at 19/2055 UTC. This event is believed to also be associated with the M2/1n/CME event on 17 November.

The geomagnetic field is expected to be unsettled to active for the next 24 hours becoming quiet to unsettled by the end of the three day forecast period. The greater than 10 MeV proton event is expected to end within the next 48 hours.

  觀測的       19 Nov 191
  預測的   20 Nov-22 Nov  190/185/180
  90天平均值        19 Nov 218

  觀測的 Afr/Ap 18 Nov  008/007
  估算值     Afr/Ap 19 Nov  015/015
  預測的    Afr/Ap 20 Nov-22 Nov  015/015-010/012-010/012