Solar activity was low. Weak, C-class activity occurred in Region 25 (S20W03) and Region 30 (N19E63). Region 19 (S19W70) has been mostly quiescent on its approach toward the west limb, and appears to be declining in size and complexity. Region 30 is now the largest active region on the visible disk (areal coverage about 450 millionths), and appears to have mixed polarity within the leading penumbra. Delta spots may become apparent as it rotates into better view. No new regions were numbered today.

Solar activity is expected to be low to moderate. Region 30 is a potential source of M-class activity.

The geomagnetic field was quiet to active, under the apparent influence of weak effects from an extension of the north polar coronal hole and a small transient passage.

The geomagnetic field is expected to be quiet to unsettled for the first day of the forecast period, then trend toward more active conditions by the end of the period, under the expected influence of a near-equatorial coronal hole.

  觀測的       10 Jul 129
  預測的   11 Jul-13 Jul  130/130/125
  90天平均值        10 Jul 166

  觀測的 Afr/Ap 09 Jul  009/016
  估算值     Afr/Ap 10 Jul  008/010
  預測的    Afr/Ap 11 Jul-13 Jul  008/008-010/012-015/015