Solar activity was low. New Region 1530 (S19E68) was responsible for multiple low level C-class flares. The largest was a C4/Sf at 24/1905Z. SDO and STEREO-B EUVI 195 imagery show brightening behind the northeast and southeast limbs, suggesting the presence of more active regions yet to rotate onto the visible disk.

Solar activity is expected to be at low levels.

The geomagnetic field was at quiet to unsettled levels with an isolated minor storm period at high latitudes from 24/1200 - 1500Z. Solar wind measurements at the ACE spacecraft showed an increase in solar wind speed from approximately 450 km/s to 580 km/s by 24/0830Z before decreasing to 500 km/s by the end of the period. This is likely due to the influence of a geoeffective coronal hole high speed stream. The greater than 10 MeV proton event at geosynchronous orbit that began at 23/1545Z, reached a maximum flux of 12 pfu at 23/2145Z and continued to fluctuate near the 10 pfu threshold. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels during the period.

The geomagnetic field is expected to be at quiet to unsettled levels with a slight chance for active periods on day 1 (25 July) due to persistent effects from the coronal hole high speed stream. Mostly quiet conditions are expected for days 2 - 3 (26 - 27 July).

  Observed       24 Jul 102
  Predicted   25 Jul-27 Jul  110/115/115
  90 Day Mean        24 Jul 126

  Observed Afr/Ap 23 Jul  008/012
  Estimated     Afr/Ap 24 Jul  009/010
  Predicted    Afr/Ap 25 Jul-27 Jul  008/008-006/005-006/005