The yield on the 10-year U.S. Treasury note climbed back to 4.7% on Friday, close to the 19-month high of 4.75% reached earlier in the week, as investors sold longer-dated government debt. The move came as year-ahead inflation expectations tracked by the University of Michigan increased in August, marking a fifth straight month above 4% and reinforcing concerns that inflation risks in the U.S. economy remain elevated. Those worries were compounded by higher energy prices linked to the war in the Middle East. Long-end yields also gained after signals from Fed Chair Warsh suggested a rate hike may not be his preferred tool for tackling inflation, pushing the 30-year Treasury bond yield to a 19-year high. Treasuries were further pressured by concern that Japan could sell part of its large reserves if the Ministry of Finance intervenes again to support the yen. The selloff persisted even as producer prices came in softer than expected and retail sales data was weak.