Solar activity was very low. Region 1112 (S19E40) showed little change during the period. SDO/AIA 193 imagery observed a filament eruption at approximately 10/2121Z. The filament was 17 degrees long and centered near S08E48, just north of Region 1112. A slow-moving, CME was detected at 11/0012Z by SOHO LASCO c2 imagery and did not appear to be Earth-directed.

Solar activity is expected to remain very low with a slight chance for C-class activity.

The geomagnetic field ranged from quiet to minor storm levels. Activity levels were quiet through 11/0600Z. By 11/0900Z, geomagnetic activity increased at all latitudes to predominately unsettled to active levels with an isolated minor storm period observed between 11/1200 - 1500Z. At approximately 11/0300Z, measurements at the ACE spacecraft observed flucuations in the B component of the interplanetary magnetic field (IMF) along with a sharp increase in density and a slight increase in wind velocity. The IMF Bz reached a maximum of -13 nT at 11/0915Z, and remained southward through 11/1805Z. The IMF Bt hit a maximum of 14 nT at 11/0936Z while density reached a peak of 47 p/cc at 11/0509Z. Wind velocities increased slightly from a low of 325 km/s at the beginning of the summary period and peaked near 375 km/s at 11/1826Z. The increase in activity is most likely a result of a glancing blow from the 06 October full-halo CME.

The geomagnetic field is expected to be quiet to unsettled, with isolated active periods on day one (12 October) due to lingering CME effects. Mostly quiet levels are expected by days two and three (13 - 14 October).

  Observé       11 Oct 075
  Prévisionnel   12 Oct-14 Oct  076/076/076
  Moyenne des 90 derniers jours        11 Oct 080

  Observé Afr/Ap 10 Oct  001/002
  Estimé     Afr/Ap 11 Oct  012/015
  Prévisionnel    Afr/Ap 12 Oct-14 Oct  008/012-005/005-005/005