Data are presented from two charge plate sensors on the Loral Telstar4 geosynchronous communications spacecraft during an interplanetary magnetic cloud event that intersected Earth on January 10, 1997. The energy input into Earth's magnetosphere from the solar wind during the event produced enhanced plasma populations that caused the charge plates to attain values more than a factor of two larger than at any other time during the month. The time variation of the charging during the event is found to be similar to the variation in conjugate area ionospheric current systems measured by magnetometers near the footpoints of the magnetic flux tube that passes through the spacecraft. ¿ 1998 American Geophysical Union