India, April 4 -- Citing a highly uncertain outlook due in part to President Donald Trump's new tariffs, Federal Reserve Chair Jerome Powell on Friday indicated the central bank will wait for greater clarity before considering any adjustments to interest rates.

Powell noted in remarks at the Society for Advancing Business Editing and Writing's annual conference that it will very difficult to assess the likely economic effects of the higher tariffs until there is greater certainty about the details.

However, Powell said it is becoming clear that the tariff increases will be significantly larger than expected and the same is likely to be true of the economic effects, which will include higher inflation and slower growth.

"The size and dura...