Solar activity remained low. Although the x-ray background was elevated all day, and significant white light growth occurred in a few regions, the largest flare activity was just a C8/Sf at 0645 UTC from Region 9632 (S18E45). Numerous mid-sized C-class events occurred from a number of the 13 spotted regions visible. Region 9622 (N12W32) grew dramatically in white light, but is still dwarfed by Regions 9628 (S17E25) and 9632, measuring 630 and 710 millionths respectively. Two new regions came into view, 9633 (N23E75) and 9634 (N12E76).

Solar activity is expected to be moderate. Regions 9622, 9628, and 9632 are each capable of M-class x-ray flares.

The geomagnetic field was quiet to active. A brief interval of active conditions occurred 0900-1500 UTC as the IMF Bz vector turned southward.

The geomagnetic field is expected to be quiet to unsettled for the next three days.

  觀測的       22 Sep 255
  預測的   23 Sep-25 Sep  260/265/270
  90天平均值        22 Sep 166

  觀測的 Afr/Ap 21 Sep  003/005
  估算值     Afr/Ap 22 Sep  010/015
  預測的    Afr/Ap 23 Sep-25 Sep  010/012-010/010-010/010