The dramatic changes in the Arctic climate observed in recent years have generated an urgent need to investigate the Arctic Ocean's heat budget. Mooring data and synoptic observations in the Fram Strait (FS) region have shown that increasing amounts of heat have been transported into the Arctic Ocean (AO) in recent times. Here we present results from observations conducted in the West Spitsbergen Current (WSC) in summers 2000–2005. The study was motivated by the strong warm anomalies seen in the Atlantic Water (AW) layer over a large area of the WSC, and changes in the WSC structure. We conclude that the warm signal was only approaching the FS, and we expect that high heat transport through the strait will continue and be even higher than during the last 6 years, mostly due to increasing activity and temperature of the western branch of WSC.