Some perturbations in the solar wind characteristics and a slow rise in
low energy particle flux were evident at the ACE spacecraft. After
05/0700 UTC, Phi shifted from positive to negative and Bt began
increasing to a peak of about 10 nT and Bz dipped to a minimum of -8 nT.
Wind speed hovered in the low to mid 400 km/s range until about 05/0930
UTC after which it began to approach 500 km/s and ended the period at
501 km/s. The sum of these observations suggest the passage of the CMEs
from 01-02 April.