Woken one night by a 6.4 magnitude earthquake at the IMF annual meetings in Bali, global finance chiefs spent the week assessing the tremors now rippling through the world economy.

The quake "was symbolic for the widespread feeling among participants that the ground under the global economy, financial markets and the multilateral trading system has started to shift," Joachim Fels, global economic adviser at Pacific Investment Management Co., said as he left the Indonesian resort.

With a stormier growth outlook and wobbly stock markets, finance ministers and central bankers on the island had plenty to talk about. Indonesian President Joko Widodo went as far as to warn "Winter is coming."