The interest rate projections or the dot plot published by the US Fed every three months is not a promise of policy direction but a guidance which is data dependent.
So, the Fed may put 2019 rate hike back on the table if the US data improves significantly and overseas risks diminish in the near future.
The Federal Reserve said last Wednesday there will likely be no interest rate hikes in 2019, marking a reversal from a previous forecast of two increases this year.