Fed policymakers will also release their summary of economic projections at the September meeting, which Lockhart said they may want to get "out of the way" before giving a taper schedule.
The economic projections "could present a picture not entirely consistent with the tapering decision in some respects," he said.
Lockhart was "agnostic" on the route the central bank might take to unwind its $120 billion worth of monthly bond purchases -- whether by following the post-Great Recession playbook and first cutting back Treasury purchases, or leading with mortgage-backed securities to calm a red-hot housing market.
Lockhart believes financial markets should absorb tapering without much volatility, but that the Fed should worry about persistent market unrest if it spills into the real economy.