(Reuters) - Federal Reserve Governor Jerome Powell said on Wednesday that the Fed was "ready for whatever happens" in Britain's close-to-call vote on European Union membership on Thursday.

The vote, which echoes the rise of populism elsewhere in Europe and the United States, will shape the future of Europe. A victory for "out" could unleash turmoil on financial markets.

While opinion polls suggested the vote was too close to call, the implied probability of a vote to remain in the EU was at 76 percent, according to Betfair betting odds.

(Reporting by Richa Naidu in Bengaluru; Editing by Anil D'Silva)