The June 1998 storm was chosen as an example of a storm which was driven by a classic-looking interplanetary magnetic cloud. It can be contrasted with the March 1998 storm which was a high-speed solar wind-driven storm. Both were similar in ring current intensity (as measured by peak Dst) but the main phase of the June 1998 storm was significantly shorter and the relativistic electron fluxes were significantly less intense than for the March 1998 storm. The May 1997 storm was also driven by a classic-looking interplanetary magnetic cloud and had similar ring current intensity but a considerably stronger radiation belt enhancement than the June 1998 storm.