“Dr. Doom” Nouriel Roubini says the “perfect storm” scenario he forecast for the global economy earlier this year is unfolding right now as growth slows in the U.S., Europe as well as China.

In May, Roubini predicted four elements – stalling growth in the U.S., debt troubles in Europe, a slowdown in emerging markets, particularly China, and military conflict in Iran – would come together to create a storm for the global economy in 2013.

“(The) 2013 perfect storm scenario I wrote on months ago is unfolding,” Roubini said on Twitter on Monday.

Chinese inflation data released on Monday, suggested that the economy is cooling faster than expected, while employment data out of the U.S. on Friday indicated that jobs growth was tepid for a fourth straight month in June.