KEY POINTS
  • The Citi Economic Surprise index is at its lowest point since mid-November after hitting its highest level since 2011 in January.
  • As its name suggests, the index measures actual data against Wall Street estimates and is thus a gauge of optimism about the economy.
  • The implied chance for a fourth Fed rate hike jumped Wednesday to a new high of 36 percent from 28 percent a week ago, a reflection of Chairman Jerome Powell's economic optimism.
United States fan cheer during the Men's Ice Hockey Preliminary Round Group B game against Slovakia at Gangneung Hockey Centre on February 16, 2018 in Gangneung, South Korea.

While Federal Reserve Chairman Jerome Powell talks up the strength of the U.S. economy, growth expectations appear to have gotten a little out of hand.

Wednesday's report that GDP increased 2.5 percent in the fourth quarter — a notch lower than first reports — was just the latest indicator that while the economy is still performing well, it's a far way from blasting off into the stratosphere.