WASHINGTON (AP) — Pointing to a weaker global economy, rising trade tensions and chronically low inflation, Chairman Jerome Powell signaled Wednesday that the Federal Reserve is likely to cut interest rates late this month for the first time in a decade.

Delivering the central bank's semiannual report to Congress, Powell said that since Fed officials met last month, "uncertainties around trade tensions and concerns about the strength of the global economy continue to weigh on the U.S. economic outlook." In addition, inflation has dipped further below the Fed's annual target level.

The chairman...